CN107276323A - A kind of angle sensing device, rotary body and electric motor system - Google Patents
A kind of angle sensing device, rotary body and electric motor system Download PDFInfo
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- CN107276323A CN107276323A CN201710647598.7A CN201710647598A CN107276323A CN 107276323 A CN107276323 A CN 107276323A CN 201710647598 A CN201710647598 A CN 201710647598A CN 107276323 A CN107276323 A CN 107276323A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/225—Detecting coils
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
Abstract
The present invention proposes a kind of angle sensing device, rotary body and electric motor system, belongs to detection technique field.The angle sensing device includes rotation angle detection apparatus and signal processing apparatus；Rotation angle detection apparatus includes at least a set of detection coil system, often set detection coil system includes many bridge arm bridge circuits at least 4 row parallel connections being made up of multiple coils, simultaneously interface draws two leads as excitation lead to two of many bridge arm bridge circuits, and a lead is drawn as signal lead from the contact of the upper and lower bridge arm of each column bridge arm.Signal processing apparatus includes field circuit, signal acquisition circuit and angle calculation circuit.The differential signal of the differential signal of two signal leads and other two signal leads changes with the anglec of rotation of rotor.Rotary body includes above-mentioned angle sensing device and rotary body body.Measurement accuracy and reliability of the present invention are high, and effective signal transacting and calculating can be carried out to inductance type rotary transformer and structure is relatively simple.
Description
Technical field
The invention belongs to detection technique field, it is related to a kind of detection device, especially a kind of angle sensing device, rotary body
And electric motor system.
Background technology
The industries such as electric automobile, industrial automation, robot, textile machine and Aero-Space be unable to do without electric rotating machine
High performance control, thus motor angular sensor is needed, and often require that its application in high temperature environments.Currently,
Photo-electric angle encoder can easily realizing the detection of the motor anglec of rotation because being widely applied, but this photoelectricity
Formula angular encoder contains photoelectric component and semiconductor devices, thus can not apply in hot environment.Rotary transformer is
It is a kind of to realize the sensor of anglec of rotation detection, because it is without using electrooptical device, thus can be in higher temperature
Environment in use.
It is sinusoidal letter that existing inductance type rotary transformer, which has in two excitation wires and two signal wires, two signal wires one,
Number, another is cosine signal.In long range transmitting procedure, easily by surrounding signal disturb, make accuracy of detection by
Harmful effect, in the case of particularly surrounding is disturbed strongly, may lead to not the anglec of rotation for normally measuring rotor.
In current rotary transformer, multigroup winding is wound with stator detection tooth, three groups of windings are generally wound with so that it is manufactured
Technique is very complicated, and because the position difference of winding causes the uniformity of rotary transformer to be adversely affected；Simultaneously as
Multigroup winding is wound with same stator detection tooth, in the production and use process, it is easy to because the reasons such as vibratory impulse occur
The problems such as short circuit in winding and broken string, and then cause rotary transformer to fail, reliability is poor.
Existing rotary transformer is substantially induction type rotary transformer, and its signal processing apparatus rotates transformation with inductance type
The suitability of device is poor, thus be more suitable for inductance type rotary transformer signal processing technology have stronger Research Significance and
Application value.
The content of the invention
It is an object of the invention to provide a kind of measurement accuracy and reliability it is high, inductance type rotary transformer can be entered
The effective signal transacting of row and calculating and the relatively simple angle sensing device of structure, rotary body and electric motor system.
In order to achieve the above object, solution of the invention is：
A kind of angle sensing device, including rotation angle detection apparatus and signal processing apparatus.The anglec of rotation detection
Device includes stator, rotor and multiple coils；The stator includes stator yoke and the stator detection tooth in the stator yoke；
Each coil is wound on stator detection tooth, at most around a coil on each stator detection tooth, each line
The inductance of circle changes with the change of the anglec of rotation of the rotor, for detecting the anglec of rotation of the rotor；It is described
Rotation angle detection apparatus includes at least a set of detection coil system, and often covering the detection coil system is included by multiple lines
Many bridge arm bridge circuits of at least 4 row parallel connections of circle composition, each column bridge arm includes at least two bridge arms, and each bridge arm is included at least
One coil；Simultaneously interface draws two leads as excitation lead to two of many bridge arm bridge circuits, from each column bridge arm
The contact of upper and lower bridge arm draw a lead as signal lead；The signal processing apparatus includes field circuit, with even
Connect the excitation lead and provide excitation signal for the excitation lead；Signal acquisition electricity including connecting the signal lead
Road, to gather the signal of the signal lead output；And including angle calculation circuit, to connect the signal acquisition circuit simultaneously
Calculate the anglec of rotation of the rotor；Often cover in the detection coil system, two signal leads are connected to the signal
Acquisition Circuit, its differential signal generates the first signal voltage changed with the anglec of rotation of the rotor；Other two letters
Number lead is connected to the signal acquisition circuit, and its differential signal generates the secondary signal changed with the anglec of rotation of the rotor
Voltage, with the anglec of rotation of the rotor according to the first signal voltage and secondary signal voltage detecting.
The rotor has rotor with salient pole；The material of the stator yoke, stator detection tooth and the rotor with salient pole is equal
For permeability magnetic material.
Preferably, many bridge arm bridge circuits are only comprising 4 row bridge arm in parallel；The rotation angle detection apparatus contains altogether
There are 2 excitation leads and 4 signal leads.
Preferably, the stator detection number of teeth is 8*K, and rotor with salient pole number is N；Wherein, K and N are positive integer；Further preferably
Ground, K is equal to 1, N and is equal to 2.
Preferably, circumferential surface point of the stator detection tooth along the side closer to the rotor of the stator yoke
Cloth, adjacent stator detection tooth is separated by arrangement, to cause the phase of the first signal voltage and secondary signal voltage to differ setting
Angle.
Preferably, the stator also includes stator and decouples on tooth, stator decoupling tooth not wound around coil, is wound with reducing
Magnetic coupling between the stator detection tooth of coil；The stator decoupling tooth is arranged on the stator detection tooth for being wound with coil
Both sides, be wound between the stator of coil detection tooth and decouple tooth at least provided with 1 stator；The stator decouples the material of tooth
For permeability magnetic material.
Preferably, the stator also includes stator assist tooth, not wound around coil on the stator assist tooth, to improve magnetic circuit
The symmetry of system；The stator assist tooth is arranged on the outside that the stator detects tooth；The material of the stator assist tooth is
Permeability magnetic material.
Preferably, the angle that the stator yoke is crossed over is less than 360 degree.
Preferably, the shape of the rotor with salient pole is set, with cause each coil inductance changing unit with
The sine wave that is changing into of the anglec of rotation of the rotor changes；Or, the shape of the rotor with salient pole is set, to cause each institute
The changing unit for stating the inductance of coil is changing into triangular wave change with the anglec of rotation of the rotor.
Preferably, the angle sensing device has stator cage, end cap, bearing and rotating shaft；The stator includes stator
Iron core, the stator core is arranged on the stator cage；The rotor includes rotor core, and the rotor core is arranged on
In the rotating shaft, rotated jointly with the whole rotor；
Preferably, the rotor is arranged in the inside of the stator；Or, the rotor is arranged in the outer of the stator
Portion.
The rotation angle detection apparatus includes at least two sets detection coil systems；At least two sets detection coils
System is arranged on same stator；The angle sensing device has the equal numbers of signal with the detection coil system
Processing unit, the detection coil system is connected correspondingly with the signal processing apparatus.Preferably, described at least two
Signal processing apparatus shares same field circuit, and/or shares same time control circuit, and/or shares same goniometer
Calculate circuit.
Preferably, respectively cover between the detection coil system, excitation lead is shared, signal lead is independent；Or, respectively cover institute
State between detection coil system, excitation lead is independent, signal lead is independent.
The angle sensing device includes at least two rotation angle detection apparatus；The angle sensing device includes and institute
State the equal signal processing apparatus of detection coil number of systems, a pair of the signal processing apparatus and the detection coil system 1
Should ground connection.Preferably, signal processing apparatus described at least two shares same field circuit, and/or when sharing same
Circuit is controlled, and/or shares same angle calculation circuit.
Preferably, at least two rotation angle detection apparatus at least includes the first rotation angle detection apparatus and second
Rotation angle detection apparatus；The rotor of first rotation angle detection apparatus only includes 1 rotor with salient pole；Second anglec of rotation is detected
The rotor of device includes the rotor with salient pole of 2 or more than 2；At least the rotor of the first rotation angle detection apparatus and second rotates
The rotor of angle detection device is set to synchronous axial system.
Preferably, the stator detection number of teeth of the first rotation angle detection apparatus is 8*M, and M is positive integer.
Preferably, in the second rotation angle detection apparatus, the stator detection number of teeth is 8*X, and rotor with salient pole number is (Y+1)；Its
In, X and Y are positive integer.
The signal acquisition circuit is signal sample circuit；Or, the signal acquisition circuit is synchro detection circuit.
The excitation signal be sine voltage source signal, sine-wave current source signal, square-wave voltage source signal or
Trapezoidal wave voltage source signal.
The angle sensing device only includes signal acquisition circuit, the signal acquisition circuit be it is time sharing shared,
With the different output signals of the timesharing detection rotation angle detection apparatus in a cycle；Or, the angle detection
Equipment includes two signal acquisition circuits, to detect the different output signals of the rotation angle detection apparatus respectively.
The signal processing apparatus also includes time control circuit；The time control circuit is adopted with the field circuit and the signal
Collector is all connected with, to control the field circuit to provide the signal of the excitation signal and the control signal acquisition circuit
Gather beat.
Preferably, the time control circuit is also connected with the angle calculation circuit, to control the angle calculation circuit to press
The anglec of rotation of rotor is calculated according to defined beat.
Preferably, the signal processing apparatus includes two signal acquisition circuits.
The input of the signal acquisition circuit is connected with wave filter, to be filtered to the signal that the signal lead is exported
Ripple processing；
Preferably, the signal processing apparatus includes wave filter described in two groups and the signal acquisition circuit.
Preferably, the wave filter is bandpass filter.
Preferably, the wave filter is low-cut filter, and the low-cut filter is that low frequency blocks wave filter.
Low pass filter is connected between the signal acquisition circuit and the angle calculation circuit, to be adopted to the signal
The signal of collector output carries out low-pass filtering treatment.
Preferably, the signal processing apparatus includes low pass filter described in two groups and the signal acquisition circuit.
The signal acquisition circuit includes difference link.
The angle sensing device also includes differential amplifier circuit；The input of the differential amplifier circuit connects the rotation
At least two signal leads of gyration detection means, to receive the output signal of the rotation angle detection apparatus and carry out difference
Divide enhanced processing；The output end of the differential amplifier circuit connects the input of the signal acquisition circuit, by differential amplification
Signal after processing is sent to the signal acquisition circuit.
Preferably, the signal processing apparatus includes differential amplifier circuit described in two groups and the signal acquisition circuit.
Preferably, filter is additionally provided between the signal lead of the rotation angle detection apparatus and the differential amplifier circuit
Ripple device.
The signal acquisition circuit is analog circuit；Or, the signal acquisition circuit is digital circuit；Or, it is described
Signal acquisition circuit is digital and anologue circuit.
The angle calculation circuit is digital circuit；Or, the angle calculation circuit is digital and anologue circuit.
Circumferential surface distribution of the stator detection tooth along the side closer to the rotor of the stator yoke, it is adjacent
Stator detection tooth is separated by the angle arrangement of setting, to cause the ratio between the first signal voltage and secondary signal voltage to be on rotor
The tan of the anglec of rotation.
The stator detection tooth is provided with two or more attached teeth, the attached tooth close to the periphery of the rotor
Material be permeability magnetic material.
Preferably, shape and the position of the attached tooth are set so that the change of the inductance of the stator detection tooth coil
Part is in sinusoidal variations with the anglec of rotation of rotor, to cause the ratio between the first signal voltage and secondary signal voltage to be on rotor
The anglec of rotation tan, to detect the anglec of rotation of the rotor.
Preferably, 3 attached teeth are provided with each stator detection tooth.
The field circuit, the signal acquisition circuit and the angle calculation circuit are realized by signal processing chip；It is excellent
Selection of land, is provided with bandpass filter between the signal processing chip and the rotation angle detection apparatus；Preferably, the signal
Low-cut filter is provided between process chip and the rotation angle detection apparatus, the low-cut filter is that low frequency blocks filtering
Device；Preferably, the signal processing chip is R/D converter chips.
A kind of rotary body for including above-mentioned angle sensing device, the rotary body also includes rotary body body.The angle inspection
Measurement equipment is installed with the rotary body body to be caused, the rotation of the rotor of the rotation angle detection apparatus of the angle sensing device
Angle and the anglec of rotation of the rotary body body detect the rotation into the relation of rule to pass through the angle sensing device
The anglec of rotation of body body.
The rotor core of the rotation angle detection apparatus is arranged in the rotating shaft of the rotary body body, with the rotation
Body body synchronous axial system and formation integral structure, to detect the anglec of rotation of the rotary body body；The anglec of rotation inspection
The stator for surveying device is arranged on the stator cage shared with the rotary body body；Preferably, the rotary body body is electricity
Motivation or generator.
Or, the rotation angle detection apparatus is fixed on the end of the rotary body body；The anglec of rotation detection
The rotating shaft of device is connected to cause the rotation angle detection apparatus and the rotary body sheet with the rotating shaft of the rotary body body
Body synchronous axial system；Preferably, the rotating shaft of the rotation angle detection apparatus and the rotating shaft of the rotary body body pass through shaft coupling
Connection；Preferably, the rotary body body is motor or generator.
A kind of electric motor system for including above-mentioned rotary body, the electric motor system also includes motor drive circuit；Institute
State motor drive circuit to be connected with signal processing apparatus, with the signal drive motor exported according to signal processing apparatus.
Preferably, rotary body body is magneto or permanent magnet motor.It is further preferred that the anglec of rotation is detected
The salient pole number of device is equal with the p-m rotor number of pole-pairs of rotary body body；Or, when the salient pole number of rotation angle detection apparatus
For 1 when, the p-m rotor number of pole-pairs of rotary body body is any positive integer.
Preferably, signal processing apparatus includes low-cut filter and R/D converters, and the low-cut filter is connected to rotation
Between angle detection device and the R/D converters.
Due to using such scheme, the beneficial effects of the invention are as follows：The present invention uses difference side due to rotor-position signal
Formula, can substantially reduce the influence of external interference in signals transmission in the longer application of signal wire.Meanwhile, it is capable to realize
Each stator detection tooth at most around 1 coil, enormously simplify production technology, effectively prevent due to winding position not
The same uniformity for causing rotation angle detection apparatus is adversely affected, and is overcome on same stator detection tooth in the prior art
Short-circuit risks between different windings.
In the case where the angle that the stator yoke of rotation angle detection apparatus is crossed over is less than 360 degree, it is greatly promoted
The miniaturization and lightweight of rotation angle detection apparatus.By setting stator to decouple tooth and/or stator assist tooth, magnetic is actively avoided
The mode of coupled interference, greatly optimizes the precision of rotation angle detection apparatus, while improving its fast-response energy, simplifies
The system architecture of rotation angle detection apparatus.
The present invention can set two sets or more than two sets of detection coil system on a rotation angle detection apparatus, compare
In many Rotary transformer systems in the prior art with equal reliability, the rotation angle detection apparatus quantity of required setting
Few, shared volume is few, and cost is substantially reduced；Compared to many rotations for setting identical quantity rotary transformer in the prior art
Voltage transformer system, when occupancy volume is identical, reliability is then greatly improved.
In the rotary angle sensing system of the present invention, at least two rotation angle detection apparatus are applied in combination, Neng Goushi
Now accurately obtain the absolute position of rotor.
The present invention sets more than two attached teeth on stator detection tooth, can realize the angle detection of high-precision small size
System.
Meanwhile, angle sensing device of the present invention proposes one kind and can provided effectively for inductive rotation angle sensor
Signal transacting technology, excitation and sampling and the anglec of rotation effectively can be carried out to inductive rotation angle sensor
Calculate, obtain the anglec of rotation of more accurate rotary transformer.
Brief description of the drawings
Fig. 1 is the overall structure diagram of angle sensing device in first embodiment of the invention；
Fig. 2 is the schematic cross-section of the rotor of rotation angle detection apparatus in first embodiment of the invention；
Fig. 3 is the structural representation of rotation angle detection apparatus entirety in first embodiment of the invention；
Fig. 4 is the structural representation of many bridge arm type circuits in first embodiment of the invention；
Fig. 5 is the structural representation of signal processing apparatus in first embodiment of the invention；
Fig. 6 is the schematic cross-section of the rotor of rotation angle detection apparatus in second embodiment of the invention；
Fig. 7 is the schematic cross-section of the rotor of rotation angle detection apparatus in third embodiment of the invention；
Fig. 8 is the schematic cross-section of the rotor of rotation angle detection apparatus in fourth embodiment of the invention；
Fig. 9 a are the circuit diagram of the bridge circuit of bridge arm more than first in fourth embodiment of the invention；
Fig. 9 b are the circuit diagram of the bridge circuit of bridge arm more than second in fourth embodiment of the invention；
Figure 10 a are the schematic cross-section of the rotor of the first rotation angle detection apparatus in fifth embodiment of the invention；
Figure 10 b are the schematic cross-section of the rotor of the second rotation angle detection apparatus in fifth embodiment of the invention；
Figure 11 a are the circuit diagram of the bridge circuit of bridge arm more than first in fifth embodiment of the invention；
Figure 11 b are the circuit diagram of the bridge circuit of bridge arm more than second in fifth embodiment of the invention；
Figure 12 is the structural representation of signal processing apparatus in sixth embodiment of the invention；
Figure 13 is the structural representation of signal processing apparatus in seventh embodiment of the invention；
Figure 14 is the structural representation of signal processing apparatus in eighth embodiment of the invention；
Figure 15 a are the schematic cross-section of the stator of rotation angle detection apparatus in ninth embodiment of the invention；
Figure 15 b are the schematic cross-section of the rotor of rotation angle detection apparatus in ninth embodiment of the invention；
Figure 16 is the circuit diagram of many bridge arm type circuits in ninth embodiment of the invention；
Figure 17 is the structural representation of rotation angle detection apparatus and the connection of rotary body body in eleventh embodiment of the invention
Figure；
Figure 18 is the structural representation of rotation angle detection apparatus and the connection of rotary body body in twelveth embodiment of the invention
Figure；
Figure 19 is the structural representation of electric motor system in thriteenth embodiment of the invention.
Embodiment
The present invention will be further described with reference to the accompanying drawings.
The present invention proposes a kind of angle sensing device, and the angle sensing device includes rotation angle detection apparatus and signal
Processing unit.
In the present invention, rotation angle detection apparatus includes stator, rotor and multiple coils.Stator includes stator yoke and is located at
Stator detection tooth in stator yoke.Each coil is wound on stator detection tooth, at most around a coil on each stator detection tooth, often
The inductance of individual coil changes with the change of the anglec of rotation of rotor, for detecting the anglec of rotation of rotor.The anglec of rotation
Detection means includes at least a set of detection coil system, often covers at least 4 row that detection coil system includes being made up of multiple coils
Many bridge arm bridge circuits in parallel, each column bridge arm includes at least two bridge arms, and each bridge arm includes at least one coil.Many bridge arms
Simultaneously interface draws two leads as excitation lead to two of bridge circuit, draws from the contact of the upper and lower bridge arm of each column bridge arm
Go out a lead as signal lead.
In the present invention, signal processing apparatus includes field circuit, to connect excitation lead and provide excitation for excitation lead
Signal；The first signal acquisition circuit and secondary signal Acquisition Circuit including connecting the signal lead, to gather the signal
The signal of lead output；And including angle calculation circuit, to connect signal acquisition circuit and calculate rotation angle detection apparatus
The anglec of rotation.
Often in set detection coil system, at least two signal leads are connected to the first signal acquisition circuit, and it (i.e. above-mentioned two
Root signal lead) differential signal generation with rotor the anglec of rotation change the first signal voltage；Other two signal leads
Secondary signal Acquisition Circuit is connected to, its (i.e. above-mentioned other two signal leads) differential signal generates the anglec of rotation with rotor
The secondary signal voltage of change is spent, with the anglec of rotation according to the first signal voltage and secondary signal voltage detecting rotor.First
Signal acquisition circuit and secondary signal Acquisition Circuit can be separate circuits；A signal acquisition electricity can also be shared
Road, as time sharing shared signal acquisition circuit, the time sharing shared signal acquisition circuit is in a cycle on acquisition time
State the first signal acquisition circuit collection at least two signal leads signal and above-mentioned secondary signal Acquisition Circuit collection it is another
The signal of outer two leads.
In the present invention, rotor has rotor with salient pole；The material of stator yoke, stator detection tooth and rotor with salient pole is magnetic conduction material
Material.
First embodiment：
Angle sensing device includes a rotation angle detection apparatus and a signal processing apparatus.The anglec of rotation is detected
Device only includes a set of detection coil system.Fig. 1 show the overall structure diagram of the angle sensing device.
In the present embodiment, the stator detection number of teeth of rotation angle detection apparatus is 8, and rotor with salient pole number (is examined for 2 according to stator
The survey number of teeth is 8*K, and rotor with salient pole number is set for N；Wherein, K and N are positive integer.Thus, in the present embodiment, K is equal to 1, N etc.
In 2).Fig. 2 show the schematic cross-section of the rotor of the rotation angle detection apparatus.Stator includes stator core, rotor bag
Include rotor core.Stator core and rotor core are stamped and formed out using silicon steel sheet.In the present embodiment, 8 stator detection teeth exist
It is uniformly distributed on the inner periphery of stator core；Circumference of 2 rotor with salient pole along rotor core is uniformly distributed on its is cylindrical.
There is Insulated winding wire skeleton on each stator detection tooth (not shown in Fig. 2).1 line is wound with each stator detection tooth
8 coils are had on circle, 8 stator detection teeth circumferentially, and circumferentially distribution is followed successively by 8 stator detection teeth clockwise
1101st, 1102,1103,1104,1105,1106,1107,1108 (for the sake of the simplicity of accompanying drawing, not to whole in Fig. 2
Stator detection tooth is marked, and only marks several stators to detect tooth).The inductance of each coil with the anglec of rotation of rotor change
And change.In the present embodiment, pass through Electromagnetic Simulation select rotor with salient pole shape so that the changing unit of the inductance of coil with turn
The anglec of rotation of son is in sinusoidal variations.In the present embodiment, the DC component of the inductance of each coil is equal, the base of the inductance of each coil
Wave amplitude is equal.
Fig. 3 show the overall structural representation of the rotation angle detection apparatus.The rotation angle detection apparatus includes fixed
Son 2, rotor 3, rotating shaft 4, bearing 5, stator cage 6, the end cap 701 and 702 of both sides, bearing chamber, six roots of sensation lead-out wire 801,802,
803、804、805、806.Rotor core is fixed in rotating shaft 4, can be rotated together with rotating shaft 4.Bearing 5 is arranged in rotating shaft 4,
Rotate to the support smooth of rotor 3 of bearing 5.Stator core is fixed in stator cage 6.Bearing chamber is arranged on the anglec of rotation
On the both sides end cap 701 and 702 for spending detection means, the outer ring of bearing 5 is arranged in the bearing chamber of two end caps 701 and 702, is protected
The center line for demonstrate,proving rotating shaft 4 is consistent with the inner circle center line of stator 2.
In the present embodiment, the rotation angle detection apparatus includes only a set of detection coil system, the detection coil system bag
The many bridge arm bridge circuits for only 4 row parallel connections being made up of above-mentioned 8 coils are included, each column bridge arm includes two bridge arms, each bridge arm
In be connected with a coil.Stator detects circumferential surface distribution of the tooth along the side closer to rotor of stator yoke, and adjacent determines
Son detection tooth is separated by 45 degree of arrangements, to cause the phase of the first signal voltage and secondary signal voltage to differ 90 degree.The present embodiment
In, 8 coils are divided into 8 groups.Every group of stator coil includes 1 coil.8 groups of stator coils connect into many bridge arms as shown in Figure 4
Bridge circuit.In Fig. 4, bridge arm XACDetect that the coil Y1 on tooth 1101 is constituted by stator, bridge arm XADOn stator detection tooth 1107
Coil Y7 constitute, bridge arm XAEDetect that the coil Y2 on tooth 1102 is constituted by stator, bridge arm XAFOn stator detection tooth 1108
Coil Y8 is constituted, bridge arm XBCDetect that the coil Y3 on tooth 1103 is constituted by stator, bridge arm XBDLine on tooth 1105 is detected by stator
Enclose Y5 to constitute, bridge arm XBEDetect that the coil Y4 on tooth 1104 is constituted by stator, bridge arm XBFCoil on tooth 1106 is detected by stator
Y6 is constituted.
6 contacts A, B, C, D, E, F of many bridge arm bridge circuits are drawn with 6 leads detect dress as the anglec of rotation respectively
The lead-out wire 801,802,803,804,805,806 put, wherein lead-out wire 801 and 802 be excitation lead, lead-out wire 803,804,
805th, 806 be signal lead.Therefore, the rotation angle detection apparatus contains 2 excitation leads and 4 signal leads altogether.
Fig. 5 is the structural representation of signal processing apparatus in the present embodiment.The signal processing apparatus includes field circuit, letter
Number Acquisition Circuit, time control circuit and angle calculation circuit.Wherein, signal acquisition circuit includes the first signal acquisition circuit and second
Signal acquisition circuit.(i.e. the anglec of rotation is detected the first feedback signal that first signal acquisition circuit is used to gather in feedback signal
It is the signal at C, D end in two output signals of device, the present embodiment), secondary signal Acquisition Circuit is used to gather feedback signal
In the second feedback signal (be i.e. the letter at E, F end in two other output signal of rotation angle detection apparatus, the present embodiment
Number).
The output end output excitation signal of field circuit, is connected with the excitation end A and B of rotation angle detection apparatus；Rotation
Feedback signal terminal C, D, E, F of angle detection device connect the input of signal acquisition circuit, and specially C, D end connection first is believed
Number Acquisition Circuit, E, F end connection secondary signal Acquisition Circuit.Time control circuit control field circuit output excitation signal simultaneously presses setting
The signal acquisition circuit of rhythm control first and secondary signal Acquisition Circuit the feedback signal of rotation angle detection apparatus is carried out
Signal acquisition process obtains position signalling；Position signalling after sampled processing is sent to angle calculation circuit, by angle calculation
Circuit calculates the anglec of rotation according to position signalling.In the present embodiment, the first signal acquisition circuit and secondary signal Acquisition Circuit are equal
Include difference link.
In the present invention, the first signal acquisition circuit and secondary signal Acquisition Circuit can be same signal acquisition circuit
(sharing a signal acquisition circuit), time sharing shared, the acquisition time sheet in a cycle is carried out to the signal acquisition circuit
The signal that above-mentioned first signal acquisition circuit and secondary signal Acquisition Circuit are gathered in embodiment.
In the present embodiment, signal acquisition circuit is that (in the present invention, signal acquisition circuit can also be same to signal sample circuit
Walk detecting circuit).
In the present embodiment, signal generation and the principle handled are as follows：
Stator is made to detect the inductance difference of the coil on tooth 1101,1102,1103,1104,1105,1106,1107,1108
For L101, L102, L103, L104, L105, L106, L107, L108.As seen from Figure 2, with the anglec of rotation of rotor
Change, the gap between each stator detection tooth and rotor with salient pole changes so that the inductance of each coil changes therewith, and it changes
Periodicity is 2.The inductance of each coil with rotor anglec of rotation θ m1Change can be expressed as：
L101=L105=L1+Lm1*sin(2θm1) formula (101)
L102=L106=L1+Lm1*sin(2θm1- 90) formula (102)
L103=L107=L1+Lm1*sin(2θm1- 180) formula (103)
L104=L108=L1+Lm1*sin(2θm1- 270) formula (104)
Wherein, L1 is the DC component of each inductance in the present embodiment (DC component of each inductance is equal in the present embodiment)；
Lm1For the fundamental voltage amplitude of each inductance in the present embodiment (fundamental voltage amplitude of each inductance is equal in the present embodiment)；
θm1For the anglec of rotation of rotor in the present embodiment.
The bridge circuit figure of reference picture 4,
Bridge arm XACInductance L_AC be：L_AC=L101 formulas (105)
Bridge arm XADInductance L_AD be：L_AD=L107 formulas (106)
Bridge arm XAEInductance L_AE be：L_AE=L102 formulas (107)
Bridge arm XAFInductance L_AF be：L_AF=L108 formulas (108)
Bridge arm XBCInductance L_BC be：L_BC=L103 formulas (109)
Bridge arm XBDInductance L_BD be：L_BD=L105 formulas (110)
Bridge arm XBEInductance L_BE be：L_BE=L104 formulas (111)
Bridge arm XBFInductance L_BF be：L_BF=L106 formulas (112)
It is easy to obtain many bridge arm bridge circuits by the simple computation of circuit with reference to Fig. 4 and according to formula (101)-(112)
Contact C and D between differential signal voltage (the first signal voltage), signal voltage (the second difference between contact E and F
Signal voltage) the ratio between be on rotor the anglec of rotation tan.In the present embodiment, node C, D are connected into the first signal
Acquisition Circuit, connects secondary signal Acquisition Circuit, angle calculation circuit is according to the first signal voltage and secondary signal by node E, F
Voltage, i.e., can calculate the anglec of rotation of rotor.
Because rotor-position signal detection uses differential mode, signal can be substantially reduced in the longer application of signal wire
The influence that extraneous signal is disturbed in transmitting procedure.Meanwhile, the present embodiment can be realized on each stator detection tooth at most around 1
Coil, enormously simplify production technology, effectively prevent because the position difference of winding causes the one of rotation angle detection apparatus
Cause property is adversely affected, and effectively prevent the short-circuit risks on same stator detection tooth in the prior art between different windings.
Second embodiment：
In the present embodiment, angle sensing device includes a rotation angle detection apparatus and a signal processing apparatus.Should
Rotation angle detection apparatus only includes a set of detection coil system.The overall structure diagram of the angle sensing device can borrow
Fig. 1 of one embodiment.
In the present embodiment, the stator detection number of teeth of rotation angle detection apparatus is 8, and rotor with salient pole number is 2.In addition, at this
In rotation angle detection apparatus, 8 stators are set to decouple on teeth, stator decoupling tooth not wound around coil, stator decouples the material of tooth
For permeability magnetic material.Fig. 6 show the schematic cross-section of the rotor of the rotation angle detection apparatus.Stator includes stator core,
Rotor includes rotor core.Stator core and rotor core are stamped and formed out using silicon steel sheet.In the present embodiment, 8 stator inspections
Survey tooth to be uniformly distributed along stator core, 8 stators decouple teeth and are distributed along stator core even circumferential, 2 rotor with salient pole are along rotor
The circumference of iron core is uniformly distributed on its is cylindrical.A stator is marked with reference 9 decouple tooth in Fig. 6.
There is Insulated winding wire skeleton on each stator detection tooth (not shown in Fig. 6).1 line is wound with each stator detection tooth
8 coils are had on circle, 8 stator detection teeth circumferentially, and circumferentially distribution is followed successively by 8 stator detection teeth clockwise
2101st, 2102,2103,2104,2105,2106,2107,2108 (for the sake of the simplicity of accompanying drawing, not to whole in Fig. 6
Stator detection tooth is marked, and only marks several stators to detect tooth).The inductance of each coil with the anglec of rotation of rotor change
And change.In the present embodiment, pass through Electromagnetic Simulation select rotor with salient pole shape so that the changing unit of the inductance of coil with turn
The anglec of rotation of son is in sinusoidal variations.In the present embodiment, the DC component of the inductance of each coil is equal, the base of the inductance of each coil
Wave amplitude is equal.
The overall structural representation of the rotation angle detection apparatus refers to Fig. 3 in first embodiment.
In the present embodiment, the rotation angle detection apparatus includes a set of detection coil system, and the detection coil system includes
The many bridge arm bridge circuits for 4 row parallel connections being made up of above-mentioned 8 coils.Stator detects tooth along stator yoke closer to the one of rotor
The circumferential surface distribution of side, adjacent stator detection tooth is separated by certain angle (herein to be separated by 45 degree；The present invention's is same
In same many bridge arm type circuits of embodiment, the angle that each adjacent stator detection tooth is separated by is not necessarily equal) arrangement, so that
The phase for obtaining the first signal voltage and secondary signal voltage differs 90 degree.In the present embodiment, 8 coils are divided into 8 groups.Every group is determined
Subcoil includes 1 coil；The inductance of each coil changes with the change of the anglec of rotation of rotor.8 groups of stator coil connections
Into the circuit diagrams of many bridge arm bridge circuits refer to Fig. 4 of first embodiment.Now, bridge arm XACOn stator detection tooth 2101
Coil Y1 constitute, bridge arm XADDetect that the coil Y7 on tooth 2107 is constituted by stator, bridge arm XAEOn stator detection tooth 2102
Coil Y2 is constituted, bridge arm XAFDetect that the coil Y8 on tooth 2108 is constituted by stator, bridge arm XBCLine on tooth 2103 is detected by stator
Enclose Y3 to constitute, bridge arm XBDDetect that the coil Y5 on tooth 2105 is constituted by stator, bridge arm XBECoil on tooth 2104 is detected by stator
Y4 is constituted, bridge arm XBFDetect that the coil Y6 on tooth 2106 is constituted by stator.
6 contacts A, B, C, D, E, F of many bridge arm bridge circuits are drawn with 6 leads detect dress as the anglec of rotation respectively
The lead-out wire put.In six roots of sensation lead-out wire, two lead-out wires are excitation lead, and four lead-out wires are signal lead.
The signal processing apparatus of the present embodiment is identical with the signal processing apparatus in follow-up 8th embodiment, and circuit diagram can be with
With reference to Figure 14 in follow-up 8th embodiment.Equally, the output end output excitation signal of field circuit, detects with the anglec of rotation and fills
Excitation end A and the B connection put；Feedback signal terminal C, D, E, F of rotation angle detection apparatus connect the first signal acquisition electricity respectively
Road and the input of secondary signal Acquisition Circuit.
In the present embodiment, signal generation and the principle handled are as follows：
The setting of tooth and winding is detected by above stator, according to easy with first embodiment identical analysis method
Go out, the differential signal voltage (the first signal voltage) between contact C and D, with the differential signal voltage (second between contact E and F
Signal voltage) the ratio between be on rotor the anglec of rotation tan.In the present embodiment, in the first signal acquisition circuit and
Differential amplifier circuit is provided with before binary signal Acquisition Circuit.Therefore, in the present embodiment, by node C, D by wave filter and
Differential amplifier circuit connects the first signal acquisition circuit, and node E, F are believed by wave filter and differential amplifier circuit connection second
Number Acquisition Circuit, angle calculation circuit can calculate the anglec of rotation of rotor according to the first signal voltage and secondary signal voltage
Degree.
In addition to having the advantages that first embodiment, the present embodiment (is not twined thereon because stator employs stator assist tooth
Coiling), the magnetic coupling influence between stator detection tooth is reduced, test signal is improved.Stator decoupling tooth is arranged on
The stator for being wound with coil detects the both sides of tooth, is wound between the stator of coil detection tooth at least provided with 1 stator decoupling tooth.
3rd embodiment：
In the present embodiment, angle sensing device includes a rotation angle detection apparatus and a signal processing apparatus.Should
Rotation angle detection apparatus only includes a set of detection coil system.The overall structure diagram of the angle sensing device can borrow
Fig. 1 of one embodiment.
In the present embodiment, the stator detection number of teeth of rotation angle detection apparatus is 8, and rotor with salient pole number is 8.Meanwhile, whole
Two outsides of body stator detection tooth are set on 1 stator assist tooth (setting 2 stator assist tooths altogether), stator assist tooth respectively
Not wound around coil, the material of stator assist tooth is permeability magnetic material.In addition, in the present embodiment, the span of stator yoke is less than 360 degree.
Fig. 7 show the schematic cross-section of the rotor of the rotation angle detection apparatus.Stator includes stator core, and rotor includes rotor
Iron core.Stator core and rotor core are stamped and formed out using silicon steel sheet.In the present embodiment, 8 stators detect tooth along stator iron
Core is uniformly distributed, and angle is 11.25 degree between each stator detection tooth；First stator assist tooth 1001 and stator detection tooth 3101 it
Between angle be 11.25 degree, the second stator assist tooth 1002 and stator detection tooth 3108 between angle be 11.25 degree；8 turn
Circumference of the sub- salient pole along rotor core is uniformly distributed on its is cylindrical.
There is Insulated winding wire skeleton on each stator detection tooth (not shown in Fig. 7).1 line is wound with each stator detection tooth
Has 8 coils on circle, 8 stators detection teeth, 8 stators detection teeth circumferentially clockwise distribution be followed successively by 3101,3102,
3103rd, 3104,3105,3106,3107,3108 (for the sake of the simplicity of accompanying drawing, tooth is not detected to whole stators in Fig. 7
It is marked, only marks several stators to detect tooth).The inductance of each coil changes with the change of the anglec of rotation of rotor.This
In embodiment, pass through Electromagnetic Simulation select rotor with salient pole shape so that the changing unit of the inductance of coil with rotor rotation
Angle is in sinusoidal variations.In the present embodiment, the DC component of the inductance of each coil is equal, the fundamental voltage amplitude phase of the inductance of each coil
Deng.
In the present embodiment, the rotation angle detection apparatus only includes a set of detection coil system, the detection coil system bag
Include many bridge arm bridge circuits for 4 row parallel connections being made up of above-mentioned 8 coils.Stator detects tooth along stator yoke closer to rotor
The circumferential surface distribution of side, the angle (being herein 11.25 degree) that adjacent stator detection tooth is separated by setting arranges, to cause the
The phase of one signal voltage and secondary signal voltage differs 90 degree.In the present embodiment, 8 coils are divided into 8 groups.Every group of stator line
Circle includes 1 coil；The inductance of each coil changes with the change of the anglec of rotation of rotor.8 groups of stator coils connect into many
Bridge arm bridge circuit, the circuit diagram of many bridge arm bridge circuits refers to Fig. 4 of first embodiment.Now, bridge arm XACBy stator
Detect that the coil Y1 on tooth 3101 is constituted, bridge arm XADDetect that the coil Y7 on tooth 3107 is constituted by stator, bridge arm XAEExamined by stator
The coil Y2 surveyed on tooth 3102 is constituted, bridge arm XAFDetect that the coil Y8 on tooth 3108 is constituted by stator, bridge arm XBCDetected by stator
Coil Y3 on tooth 3103 is constituted, bridge arm XBDDetect that the coil Y5 on tooth 3105 is constituted by stator, bridge arm XBETooth is detected by stator
Coil Y4 on 3104 is constituted, bridge arm XBFDetect that the coil Y6 on tooth 3106 is constituted by stator.
6 contacts A, B, C, D, E, F of many bridge arm bridge circuits are drawn with 6 leads detect dress as the anglec of rotation respectively
The lead-out wire put.In 6 lead-out wires, two lead-out wires are excitation lead, and four lead-out wires are signal lead in addition.
The signal processing apparatus of the present embodiment is identical with the signal processing apparatus in follow-up 8th embodiment, and circuit diagram can be with
With reference to Figure 14 in follow-up 8th embodiment.Equally, the output end output excitation signal of field circuit, detects with the anglec of rotation and fills
Excitation end A and the B connection put, feedback signal terminal C, D, E, F of rotation angle detection apparatus connect the first signal acquisition electricity respectively
Road and the input of secondary signal Acquisition Circuit.
In the present embodiment, signal generation and the principle handled are as follows：
The setting of tooth and winding is detected by above stator, according to easy with first embodiment identical analysis method
Go out, the differential signal voltage (the first signal voltage) between contact C and D, with the differential signal voltage (second between contact E and F
Signal voltage) the ratio between be on rotor the anglec of rotation tan.In the present embodiment, in the first signal acquisition circuit and
Differential amplifier circuit is provided with before binary signal Acquisition Circuit.Therefore, in the present embodiment, by contact C, D by wave filter and
Differential amplifier circuit connects the first signal acquisition circuit, and contact E, F are believed by wave filter and differential amplifier circuit connection second
Number Acquisition Circuit, angle calculation circuit can calculate the anglec of rotation of rotor according to the first signal voltage and secondary signal voltage
Degree.
In addition to having the advantages that first embodiment, the present embodiment is less than 360 degree due to the span of stator yoke, not to be complete
Whole circle, therefore the volume, weight and manufacturing cost of detecting system can be reduced.In addition, to also set up stator auxiliary for the present embodiment
Tooth is helped, i.e., the stator tooth of the not wound around coil in the outside of tooth is detected positioned at one-piece stator, to improve the symmetry of magnetic circuit system, is carried
(if being not provided with stator assist tooth, the stator of outermost stator detection tooth and inner side detects the magnetic resistance meeting of tooth to high measurement accuracy
It is inconsistent, so that the fundamental voltage amplitude and DC component of the inductance of each stator detection tooth coil are inconsistent, to accuracy of detection
Adversely affect).
Fourth embodiment：
In the present embodiment, angle sensing device includes a rotation angle detection apparatus and two signal processing apparatus.Should
Rotation angle detection apparatus is altogether comprising two sets of detection coil systems (quantity of detection coil system and quantity of signal processing apparatus
It is equal), two sets of detection coil systems are arranged on same stator.Two sets of detection coil systems and two signal processing apparatus one
One is correspondingly connected.
In the present embodiment, the stator detection number of teeth of rotation angle detection apparatus is 16, and rotor with salient pole number is 4.Fig. 8 is shown
The schematic cross-section of the rotor of the rotation angle detection apparatus of this in the present embodiment.Stator includes stator core, and rotor includes turning
Sub- iron core, stator core and rotor core are stamped and formed out using silicon steel sheet.In the present embodiment, 16 stators detect tooth along stator
Iron core inner surface is uniformly distributed；4 rotor with salient pole are uniformly distributed along along the outer round surface of rotor core.
There is Insulated winding wire skeleton on each stator detection tooth (not shown in Fig. 8).It is wound with each stator detection tooth and only
It is full of on 1 coil, 16 stator detection teeth and has 16 coils circumferentially, 16 stator detection teeth is circumferentially clockwise
Distribution is followed successively by 4101,4102,4103,4104,4105,4106,4107,4108,4109,4110,4111,4112,4113,
4114th, 4115,4116 (for the sake of the simplicity of accompanying drawing, whole stator detection teeth is not marked in Fig. 8, only marked
Several stators detect tooth).The inductance of each coil changes with the change of the anglec of rotation of rotor.In the present embodiment, pass through electricity
The shape of magnetic emulation selection rotor with salient pole so that the changing unit of the inductance of coil is in sinusoidal variations with the anglec of rotation of rotor.
In the present embodiment, the DC component of the inductance of each coil is equal, and the fundamental voltage amplitude of the inductance of each coil is equal.
In the present embodiment, the rotation angle detection apparatus includes two sets of detection coil systems, respectively the first detection line altogether
Circle system and the second detection coil system.First detection coil system include be wound on stator detection tooth 4101,4102,4103,
4104th, the coil on 4105,4106,4107,4108, the second detection coil system include being wound on stator detection tooth 4109,4110,
4111st, the coil on 4112,4113,4114,4115,4116, two sets of detection coil systems are belonging respectively to two independent rotations
Angle detection device detection coil system, two detection coil systems separately constitute the bridge circuit of bridge arm more than first, bridge more than second
Arm bridge circuit.Circuit diagram after the bridge circuit of bridge arm more than first, the connection of the bridge circuit of bridge arm more than second is respectively such as Fig. 9 a
With shown in Fig. 9 b.
In Fig. 9 a, bridge arm XA1C1Detect that the coil Y1 on tooth 4101 is constituted by stator, bridge arm XA1D1Tooth 4107 is detected by stator
On coil Y7 constitute, bridge arm XA1E1Detect that the coil Y2 on tooth 4102 is constituted by stator, bridge arm XA1F1Tooth 4108 is detected by stator
On coil Y8 constitute, bridge arm XB1C1Detect that the coil Y3 on tooth 4103 is constituted by stator, bridge arm XB1D1Tooth 4105 is detected by stator
On coil Y5 constitute, bridge arm XB1E1Detect that the coil Y4 on tooth 4104 is constituted by stator, bridge arm XB1F1Tooth 4106 is detected by stator
On coil Y6 constitute.
In Fig. 9 b, bridge arm XA2C2Detect that the coil Y9 on tooth 4109 is constituted by stator, bridge arm XA2D2Tooth 4115 is detected by stator
On coil Y15 constitute, bridge arm XA2E2Detect that the coil Y10 on tooth 4110 is constituted by stator, bridge arm XA2F2Tooth is detected by stator
Coil Y16 on 4116 is constituted, bridge arm XB2C2Detect that the coil Y11 on tooth 4111 is constituted by stator, bridge arm XB2D2Detected by stator
Coil Y13 on tooth 4113 is constituted, bridge arm XB2E2Detect that the coil Y12 on tooth 4112 is constituted by stator, bridge arm XB2F2Examined by stator
The coil Y14 surveyed on tooth 4114 is constituted.
By contact A1, B1 draw two leads as the first detection coil system excitation signal lead, by contact C1,
D1, E1, F1 draw four leads as the position signalling lead of the first detection coil system.
By contact A2, B2 draw two leads as the second detection coil system excitation signal lead, by contact C2,
D2, E2, F2 draw four leads as the position signalling lead of the second detection coil system.
In the present embodiment, between two sets of detection coil systems, excitation lead is independent, and signal lead is independent.And in the present invention
In, respectively covering the detection coil system, (rotation angle detection apparatus can also include more than two sets of detection coil in the present invention
System) between, or excitation lead is shared, and signal lead is independent.
In the present embodiment, the first signal processing apparatus and secondary signal processing unit with the letter in follow-up 8th embodiment
Number processing unit is identical, and circuit diagram may be referred to Figure 14 in follow-up 8th embodiment.First detection coil system and first
Signal processing apparatus is connected, specially the output end output excitation signal of the field circuit of the first signal processing apparatus, with first
Contact A1 and the B1 connection of detection coil system, feedback signal terminal C1, D1, E1, F1 of the first detection coil system pass through respectively
Wave filter and differential amplifier circuit connect the input of two signal acquisition circuits of the first signal processing apparatus.Second detection line
Circle system is connected with secondary signal process circuit, specially the output end output excitation of the field circuit of secondary signal processing unit
Signal, is connected with the contact A2 and B2 of the second detection coil system, the feedback signal terminal C2 of the second detection coil system, D2, E2,
F2 connects the input of two signal acquisition circuits of secondary signal processing unit by wave filter and differential amplifier circuit respectively.
In the present embodiment, signal generation and the principle handled are as follows：
Make the line on the first detection coil system detectio tooth 4101,4102,4103,4104,4105,4106,4107,4108
The inductance of circle is respectively L101, L102, L103, L104, L105, L106, L107, L108.As seen from Figure 8, with rotor
The anglec of rotation change, the gap between each stator detection tooth and rotor with salient pole changes so that the inductance of each coil with
Change, its period of change number be 4.The inductance of each coil with rotor anglec of rotation θ m4Change can be expressed as：
L101=L105=L4+Lm4*sin(4θm4) formula (401)
L102=L106=L4+Lm4*sin(4θm4- 90) formula (402)
L103=L107=L4+Lm4*sin(4θm4- 180) formula (403)
L104=L108=L4+Lm4*sin(4θm4- 270) formula (404)
Wherein, L4 is the DC component of each inductance in the present embodiment (DC component of each inductance is equal in the present embodiment)；
Lm4For the fundamental voltage amplitude of each inductance in the present embodiment (fundamental voltage amplitude of each inductance is equal in the present embodiment)；
θm4For the anglec of rotation of rotor in the present embodiment.
The setting of tooth and winding is detected by above stator, according to easy with first embodiment identical analysis method
Arrive, the differential signal voltage (the first signal voltage) between contact C1 and D1, with the differential signal voltage between contact E1 and F1
The ratio between (secondary signal voltage) is the tan of the anglec of rotation on rotor.Therefore, in the present embodiment, by contact C1, D1
The first signal acquisition circuit of the first signal processing apparatus is connected by wave filter and differential amplifier circuit, contact E1, F1 are led to
Wave filter and differential amplifier circuit connect the secondary signal Acquisition Circuit of the first signal processing apparatus, angle calculation circuit according to
First signal voltage and secondary signal voltage, i.e., can calculate the anglec of rotation of rotor.
Similarly, the second detection coil system detectio tooth 4109,4110,4111,4112,4113,4114,4115,4116 is made
On the inductance of coil be respectively L109, L110, L111, L112, L113, L114, L115, L116.As seen from Figure 8, with
The change of the anglec of rotation of rotor, the gap between each stator detection tooth and rotor with salient pole changes so that each coil
Inductance changes therewith, and its period of change number is 4.The inductance of each coil with rotor anglec of rotation θ m4Change can distinguish table
It is shown as
L109=L113=L4+Lm4*sin(4θm4) formula (405)
L110=L114=L4+Lm4*sin(4θm4- 90) formula (406)
L111=L115=L4+Lm4*sin(4θm4- 180) formula (407)
L112=L116=L4+Lm4*sin(4θm4- 270) formula (408)
Wherein, L4 is the DC component of each inductance in the present embodiment；
Lm4For the fundamental voltage amplitude of each inductance in the present embodiment,
θm4For the anglec of rotation of rotor in the present embodiment.
The setting of tooth and winding is detected by above stator, according to easy with first embodiment identical analysis method
Go out, differential signal voltage of the differential signal voltage (the 3rd signal voltage) between contact E2 and F2 between contact C2 and D2
The ratio between (the 4th signal voltage) is the tan of the anglec of rotation on rotor.Therefore, in the present embodiment, by contact C2, D2
A signal acquisition circuit of secondary signal processing unit is connected by wave filter and differential amplifier circuit, contact E2, F2 are led to
Wave filter and differential amplifier circuit connect another signal acquisition circuit of secondary signal processing unit, angle calculation circuit root
According to the 3rd signal voltage and the 4th signal voltage, i.e., it can calculate the anglec of rotation of rotor.
As can be seen here, in addition to having the advantages that first embodiment, the present embodiment sets two sets of inspections on same stator
Test coil system, in use, can be using a set of detection coil system as back-up system, in currently used detection line
When circle system breaks down, it is switched to another set of detection coil system and works on, substantially increases the anglec of rotation inspection of rotor
The reliability of survey；Two sets of detection coil systems operation detection anglec of rotation simultaneously can also be made, testing result is compared, also can
Enough greatly improve the reliability of testing result.It detects system compared to the multi-rotation angle in the prior art with equal reliability
System, the rotation angle detection apparatus quantity of required setting is few, and shared volume is few, and cost is substantially reduced；Compared to existing skill
The multi-rotation angle detecting system of identical quantity rotation angle detection apparatus is set in art, when occupancy volume is identical, reliability
Then greatly improve.
In the present invention, two (or more) signal processing apparatus can share same field circuit, and/or share
Same time control circuit, and/or share same angle calculation circuit.
5th embodiment：
In the present embodiment, angle sensing device, which includes two rotation angle detection apparatus, (in the present invention, can also include two
Rotation angle detection apparatus more than individual) and two signal processing apparatus, each rotation angle detection apparatus is only including a set of inspection
Test coil system.Therefore, the rotation angle detection apparatus altogether comprising two sets detection coil systems (quantity of detection coil system and
The quantity of signal processing apparatus is equal and connects correspondingly).Two sets of detection coil systems and two signal processing apparatus one
One is correspondingly connected.
In the present embodiment, the stator detection number of teeth of the first rotation angle detection apparatus is 8, and rotor with salient pole number is 1；Second rotation
The stator detection number of teeth of gyration detection means is 8, and rotor with salient pole number is 10；First rotation angle detection apparatus and the second rotation
Angle detection device is set to synchronous axial system, and (in the present invention, the angle sensing device can include 1,2 or more than 2
Rotation angle detection apparatus.First rotation angle detection apparatus only includes 1 rotor with salient pole；Second rotation angle detection apparatus bag
The rotor with salient pole of 2 or more than 2 are included, at least the first rotation angle detection apparatus and the second rotation angle detection apparatus are set to
Synchronous axial system.In the present invention, the stator detection number of teeth of the first rotation angle detection apparatus is 8*M, and M is positive integer；Second rotation
In angle detection device, the stator detection number of teeth is 8*X, and rotor with salient pole number is (Y+1)；Wherein, X and Y is positive integer.Therefore, originally
In embodiment, M is equal to 1, X and is equal to 1, Y equal to 9).
Figure 10 a are the schematic cross-section of the rotor of the first rotation angle detection apparatus in the present embodiment；Figure 10 b are this reality
Apply the schematic cross-section of the rotor of the second rotation angle detection apparatus in example.First rotation angle detection apparatus and the second rotation
In angle detection device, stator includes stator core, and rotor includes rotor core, and stator core and rotor core are used
Silicon steel sheet is stamped and formed out.8 stators of the first rotation angle detection apparatus and the second rotation angle detection apparatus detect tooth along institute
Stator core inner surface be uniformly distributed；10 rotor with salient pole of the second rotation angle detection apparatus are examined along second anglec of rotation
The excircle for surveying the rotor core of device is uniformly distributed.
First rotation angle detection apparatus and the second rotation angle detection apparatus each stator detection tooth on have insulation around
Line skeleton (not shown in Figure 10 a and Figure 10 b).It is wound with each stator detection tooth and is only full of 1 coil, 8 stator detections
8 coils are had on tooth circumferentially.In first rotation angle detection apparatus, 8 stator detection teeth circumferentially divide clockwise
Cloth is followed successively by 5101A, 5102A, 5103A, 5104A, and 5105A, 5106A, 5107A, 5108A (for the sake of the simplicity of accompanying drawing, scheme
Whole stator detection teeth is not marked in 10a, only marks several stators to detect tooth).Second anglec of rotation is detected
In device, 8 stator detection teeth are circumferentially distributed and are followed successively by 5101B, 5102B, 5103B, 5104B clockwise, 5105B,
5106B, 5107B, 5108B (for the sake of the simplicity of accompanying drawing, whole stator detection teeth are not marked in Figure 10 b, only
Several stators are marked to detect tooth).The inductance of each coil changes with the change of the anglec of rotation of rotor.In the present embodiment, lead to
Cross the shape that Electromagnetic Simulation selects rotor with salient pole so that the changing unit of the inductance of coil becomes with the anglec of rotation of rotor in sinusoidal
Change.In the present embodiment, the DC component of the inductance of each coil is equal, and the fundamental voltage amplitude of the inductance of each coil is equal.
In the present embodiment, the first rotation angle detection apparatus only includes being referred to as in a set of detection coil system, the present embodiment
First detection coil system.First detection coil system includes being wound on stator detection tooth 5101A, 5102A, 5103A, 5104A,
Coil on 5105A, 5106A, 5107A, 5108A.In the present embodiment, the second rotation angle detection apparatus includes a set of detection line
It is referred to as the second detection coil system in circle system, the present embodiment.Second detection coil system includes being wound on stator detection tooth
Coil on 5101B, 5102B, 5103B, 5104B, 5105B, 5106B, 5107B, 5108B.Above-mentioned two sets of detection coil systems
It is belonging respectively to the independent rotation angle detection apparatus detection coil system on two stators, two detection coil systems group respectively
Into many bridge arm bridge circuits and many bridge arm bridge circuits of the second rotation angle detection apparatus of the first rotation angle detection apparatus,
The bridge circuit of bridge arm more than first and bridge arm bridge circuit more than second are referred to as in the present embodiment, both circuit diagram difference
As shown in Figure 11 a and Figure 11 b.
In Figure 11 a, bridge arm XA1C1Coil Y on tooth 5101A is detected by statorA1Constitute, bridge arm XA1D1Tooth is detected by stator
Coil Y on 5106AA6Constitute, bridge arm XA1E1Coil Y on tooth 5103A is detected by statorA3Constitute, bridge arm XA1F1Examined by stator
The coil Y surveyed on tooth 5108AA8Constitute, bridge arm XB1C1Coil Y on tooth 5105A is detected by statorA5Constitute, bridge arm XB1D1By fixed
Coil Y on son detection tooth 5102AA2Constitute, bridge arm XB1E1Coil Y on tooth 5107A is detected by statorA7Constitute, bridge arm XB1F1
Coil Y on tooth 5104A is detected by statorA4Constitute.
In Figure 11 b, bridge arm XA2C2Coil Y on tooth 5101B is detected by statorB1Constitute, bridge arm XA2D2Tooth is detected by stator
Coil Y on 5107BB7Constitute, bridge arm XA2E2Coil Y on tooth 5102B is detected by statorB2Constitute, bridge arm XA2F2Examined by stator
The coil Y surveyed on tooth 5108BB8Constitute, bridge arm XB2C2Coil Y on tooth 5103B is detected by statorB3Constitute, bridge arm XB2D2By fixed
Coil Y on son detection tooth 5105BB5Constitute, bridge arm XB2E2Coil Y on tooth 5104B is detected by statorB4Constitute, bridge arm XB2F2
Coil Y on tooth 5106B is detected by statorB6Constitute.
By contact A1, B1 draw two leads as the first detection coil system excitation signal lead, by contact C1,
D1, E1, F1 draw four leads as the position signalling lead of the first detection coil system.
By contact A2, B2 draw two leads as the second detection coil system excitation signal lead, by contact C2,
D2, E2, F2 draw four leads as the position signalling lead of the second detection coil system.
In the present embodiment, the first signal processing apparatus and secondary signal processing unit with the letter in follow-up 8th embodiment
Number processing unit is identical, and circuit diagram may be referred to Figure 14 in follow-up 8th embodiment.First detection coil system and first
Signal processing circuit is connected, specially the output end output excitation signal of the field circuit of the first signal processing apparatus, with first
Contact A1 and the B1 connection of detection coil system, feedback signal terminal C1, D1, E1, F1 of the first detection coil system pass through filtering
Device and differential amplifier circuit connect the input of the signal acquisition circuit of the first signal processing apparatus.Second detection coil system with
Secondary signal process circuit is connected, specially the output end output excitation signal of the field circuit of secondary signal processing unit, with
Contact A2 and the B2 connection of second detection coil system, feedback signal terminal C2, D2, E2, F2 of the second detection coil system pass through
The input of wave filter and the signal acquisition circuit of differential amplifier circuit connection secondary signal processing unit.
The setting of tooth and winding is detected by above stator, according to easy with first embodiment identical analysis method
Go out, the differential signal voltage between differential signal voltage (the first signal voltage) and contact E1 and F1 between contact C1 and D1
The ratio between (secondary signal voltage) is the tan of the anglec of rotation on rotor.Therefore, in the present embodiment, by contact C1, D1
The first signal acquisition circuit of the first signal processing apparatus is connected by wave filter and differential amplifier circuit, contact E1, F1 are led to
Wave filter and differential amplifier circuit connect the secondary signal Acquisition Circuit of the first signal processing apparatus, angle calculation circuit according to
First signal voltage and secondary signal voltage, i.e., can calculate the anglec of rotation of rotor.Also, the periodicity of this signal is 1, by
This can obtain the absolute position of rotor.
The setting of tooth and winding is detected by above stator, according to easy with first embodiment identical analysis method
Go out, differential signal voltage of the differential signal voltage (the 3rd signal voltage) between contact E2 and F2 between contact C2 and D2
The ratio between (the 4th signal voltage) is the tan of the anglec of rotation on rotor.Therefore, in the present embodiment, by contact C2, D2
A signal acquisition circuit of secondary signal processing unit is connected by wave filter and differential amplifier circuit, contact E2, F2 are led to
Wave filter and differential amplifier circuit connect another signal acquisition circuit of secondary signal processing unit, angle calculation circuit root
According to the 3rd signal voltage and the 4th signal voltage, i.e., it can calculate the anglec of rotation of rotor.Also, the periodicity of this signal is
10。
In second rotation angle detection apparatus, rotor often rotates 1 week, and the inductance of coil changes 10 cycles, i.e. rotor is every
Turn 36 degree of position signallings and change 1 cycle, thus being combined with the result of the first rotation angle detection apparatus can survey for subdivision
Examination is interval, greatly improves accuracy of detection.
Therefore, in the present embodiment the rotary angle sensing system except with rotation angle detection apparatus in first embodiment
Advantage outside, be applied in combination and can be also accurately obtained with the second rotation angle detection apparatus by the first rotation angle detection apparatus
The absolute position of rotor.
In the present invention, two (or more) signal processing apparatus can share same field circuit, and/or share
Same time control circuit, and/or share same angle calculation circuit.
Sixth embodiment：
In the present embodiment, angle sensing device includes rotation angle detection apparatus and coupled signal processing apparatus,
Wherein rotation angle detection apparatus is identical with the rotation angle detection apparatus in first embodiment.In the present embodiment, signal transacting
The excitation signal that field circuit is exported in device is sine voltage source signal (in the present invention or sine-wave current source
Signal, square-wave voltage source signal or trapezoidal wave voltage source signal).
Figure 12 show the structural representation of signal processing apparatus in the present embodiment.In the present embodiment, signal processing apparatus
Including field circuit, two wave filters, two signal acquisition circuits, time control circuit and angle calculation circuit.In Figure 12, with first
The same in embodiment, the first feedback signal is the signal that feedback signal terminal C and D are exported, and the second feedback signal is feedback signal terminal E
The signal exported with F.
The output end output excitation signal of field circuit, is connected with the excitation end A and B of rotation angle detection apparatus；Rotation
Feedback signal terminal C, D of angle detection device is connected to the input of the first wave filter of signal processing apparatus, through the first filtering
The output signal that device is filtered out after interference is sent to the input of the first signal acquisition circuit；The feedback signal of rotation angle detection apparatus
End E, F are connected to the input of the second wave filter of signal processing apparatus, the output signal after filtering out interference through the second wave filter
It is sent to the input of secondary signal Acquisition Circuit.Signal acquisition circuit in the present embodiment includes difference link.Time control circuit
Control field circuit output excitation signal is simultaneously adopted by the set signal acquisition circuit of sampling rhythm control first and secondary signal
Collector carries out sampling processing to the feedback signal of rotation angle detection apparatus and obtains the letter of the position after position signalling, sampling processing
Number sending angle calculation circuit counting to goes out the anglec of rotation.In the present invention, the first signal acquisition circuit and secondary signal collection electricity
Road can share a signal acquisition circuit, and time sharing shared, the acquisition time in a cycle is carried out to the signal acquisition circuit
Such as above-mentioned first signal acquisition circuit in the present embodiment and the signal of secondary signal Acquisition Circuit collection.
In the present embodiment, signal acquisition circuit is that (in the present invention, signal acquisition circuit can also be same to signal sample circuit
Walk detecting circuit).
In the present invention, the first wave filter and the second wave filter are bandpass filter；Or, the first wave filter and the second filter
Ripple device is low-resistance (low frequency blocking) wave filter, and DC component blocking processing is carried out with the signal exported to signal lead.
The angle Cleaning Principle of the present embodiment is similar to first embodiment.Meanwhile, the present embodiment due to feedback signal with
Wave filter is introduced between signal acquisition circuit, anti-interference energy of the angle detection system at Shi Jishiyong scene is greatly strengthen
Power.
7th embodiment：
In the present embodiment, angle sensing device includes rotation angle detection apparatus and coupled signal processing apparatus,
Wherein rotation angle detection apparatus is identical with the rotation angle detection apparatus in first embodiment.In the present embodiment, signal transacting
The excitation signal that field circuit is exported in device is sine voltage source signal (in the present invention or sine-wave current source
Signal, square-wave voltage source signal or trapezoidal wave voltage source signal).
Figure 13 show the structural representation of signal processing apparatus in the present embodiment.In the present embodiment, signal processing apparatus
Including field circuit, two wave filters, two signal acquisition circuits, time control circuit, two low pass filters and angle calculation electricity
Road.In Figure 13, with first embodiment, the first feedback signal is the signal that feedback signal terminal C and D are exported, the second feedback
Signal is the signal that feedback signal terminal E and F are exported.
The output end output excitation signal of field circuit, is connected with the excitation end A and B of rotary transformer；The anglec of rotation is examined
The feedback signal terminal C and D of survey device are connected to the input of the first wave filter of the first signal processing apparatus, the first wave filter
Output signal is sent to the input of the first signal acquisition circuit；The feedback signal terminal E and F of rotation angle detection apparatus are connected to
The input of second wave filter of binary signal processing unit, the output signal of the second wave filter is sent to secondary signal Acquisition Circuit
Input.Signal acquisition circuit in the present embodiment includes difference link.Time control circuit control field circuit output excitation letter
Number and the feedback signal of rotation angle detection apparatus is sampled by the sampling signal acquisition circuit of rhythm control first of setting
The position signalling obtained after position signalling, sampling processing is handled to be respectively transmitted to the first low pass filter and the second LPF
Position signalling after device, LPF, which is exported, gives angle calculation circuit, and the anglec of rotation is gone out by angle calculation circuit counting.The present invention
In, the first signal acquisition circuit and secondary signal Acquisition Circuit can share a signal acquisition circuit, to signal acquisition electricity
Road carries out time sharing shared, above-mentioned first signal acquisition circuit of acquisition time and the collection of secondary signal Acquisition Circuit in a cycle
Signal.
In the present embodiment, signal acquisition circuit is that (in the present invention, signal acquisition circuit can also be same to signal sample circuit
Walk detecting circuit).
In the present invention, the first wave filter and the second wave filter are bandpass filter；Or, the first wave filter and the second filter
Ripple device is low-resistance (low frequency blocking) wave filter, and DC component blocking processing is carried out with the signal exported to signal lead.
The angle Cleaning Principle of the present embodiment is similar to first embodiment and sixth embodiment.Meanwhile, the present embodiment due to
Low pass filter is added again relative to sixth embodiment between signal acquisition circuit and angle calculation circuit, so as to substantially reduce
The anti-interference influence of high frequency of angle detection system.
8th embodiment：
In the present embodiment, angle sensing device includes rotation angle detection apparatus and coupled signal processing apparatus,
Wherein rotation angle detection apparatus is identical with the rotation angle detection apparatus in first embodiment.In the present embodiment, signal transacting
The excitation signal that field circuit is exported in device is sine voltage source signal (in the present invention or sine-wave current source
Signal, square-wave voltage source signal or trapezoidal wave voltage source signal).
Figure 14 show the structural representation of signal processing apparatus in the present embodiment.In the present embodiment, signal processing apparatus
Including field circuit, two wave filters, two differential amplifier circuits, two signal acquisition circuits, time control circuit and angle calculation
Circuit.In Figure 14, with first embodiment, the first feedback signal is the signal that feedback signal terminal C and D are exported, and second is anti-
Feedback signal is the signal that feedback signal terminal E and F are exported.
The output end output excitation signal of field circuit, is connected with the excitation end A and B of rotation angle detection apparatus；Rotation
Feedback signal terminal C, D of angle detection device is connected to the input of the first wave filter of signal processing apparatus, through the first filtering
The output signal that device filters out after interference is sent to the first differential amplifier circuit, the differential amplification signal after the first differential amplifier circuit
Into the input of the first signal acquisition circuit；Feedback signal terminal E, F of rotation angle detection apparatus is connected to signal processing device
The input for the second wave filter put, the output signal after filtering out interference through the second wave filter is sent to the second differential amplifier circuit,
Differential amplification signal after the second differential amplifier circuit enters the input of secondary signal Acquisition Circuit.Time control circuit control is encouraged
Magnetic circuit exports excitation signal and by the set signal acquisition circuit of sampling rhythm control first and secondary signal Acquisition Circuit
Feedback signal progress sampling processing to rotation angle detection apparatus obtains the transmission of the position signalling after position signalling, sampling processing
Go out the anglec of rotation to angle calculation circuit counting.In the present invention, the first signal acquisition circuit and secondary signal Acquisition Circuit can be with
A signal acquisition circuit is shared, time sharing shared, acquisition time above-mentioned the in a cycle is carried out to the signal acquisition circuit
One signal acquisition circuit and the signal of secondary signal Acquisition Circuit collection；Now, the first wave filter and the second wave filter share one
Individual wave filter, the first differential amplifier circuit and the second differential amplifier circuit share a differential amplifier circuit.
In the present embodiment, signal acquisition circuit is that (in the present invention, signal acquisition circuit can also be same to signal sample circuit
Walk detecting circuit).
In the present invention, the first wave filter and the second wave filter are bandpass filter；Or, the first wave filter and the second filter
Ripple device is low-resistance (low frequency blocking) wave filter, and DC component blocking processing is carried out with the signal exported to signal lead.
The angle Cleaning Principle of the present embodiment is similar to first embodiment, simply will need to adopt in signal in first embodiment
The calculus of differences carried out in collector is completed in differential amplifier circuit.Meanwhile, the present embodiment is due in feedback signal and signal
Wave filter is introduced between Acquisition Circuit, antijamming capability of the angle detection system at Shi Jishiyong scene is greatly strengthen.
9th embodiment：
The angle sensing device of the present embodiment includes rotation angle detection apparatus and coupled signal processing apparatus, its
Middle signal processing apparatus is identical with the signal processing apparatus in the 8th embodiment.In the present embodiment, excitation in signal processing apparatus
The excitation signal of circuit output be sine voltage source signal (present invention in or sine-wave current source signal, square wave
Voltage source signal or trapezoidal wave voltage source signal).
In the present embodiment, the stator detection number of teeth of rotation angle detection apparatus is 16, the angle between each stator detection tooth
For 22.5 degree；Be provided with each stator detection tooth 3 attached teeth (in the present invention, can be set on each stator detection tooth 2 or
The attached tooth of more than 2), each angle detected between attached tooth adjacent on tooth is 6 degree (now, in middle attached tooth
Heart line detects that the center line of tooth is overlapped with the stator at place).The material of attached tooth is permeability magnetic material.Figure 15 a show the rotation
The schematic cross-section of the stator of angle detection device.In the present embodiment, the rotor with salient pole number of the rotation angle detection apparatus is 60,
This 60 rotor with salient pole are evenly distributed along rotor surface, and Figure 15 b show the section of the rotor of the rotation angle detection apparatus
Schematic diagram.Identical with foregoing embodiments, the rotor of rotation angle detection apparatus is located at the inside of stator in the present embodiment.Here
Because rotor with salient pole number is more, for the sake of understanding, the stator of rotation angle detection apparatus is represented with Figure 15 a and Figure 15 b respectively and turned
Son.Stator includes stator core, and rotor includes rotor core.Stator core and rotor core are stamped and formed out using silicon steel sheet.
In the present embodiment, the rotation angle detection apparatus includes a set of detection coil system, the detection coil system bag altogether
Include and wind 1 coil on 16 coils, each stator detection tooth.Above-mentioned 16 coils are connected to form many bridge arm type electricity by Figure 16
Road.
16 stators detection teeth circumferentially clockwise distribution be followed successively by 9101,9102,9103,9104,9105,9106,
9107th, 9108,9109,9110,9111,9112,9113,9114,9115,9116 (for the sake of the simplicity of accompanying drawing, in Figure 15 a
Whole stator detection teeth is not marked, only marks several stators to detect tooth).The inductance of each coil with rotor rotation
The change of gyration and change.In the present embodiment, by Electromagnetic Simulation, the shape of attached tooth and rotor with salient pole is selected so that coil
Inductance changing unit with rotor the anglec of rotation be in sinusoidal variations.In the present embodiment, the DC component of the inductance of each coil
Equal, the fundamental voltage amplitude of the inductance of each coil is equal.
In Figure 16, bridge arm XACDetect that the coil on tooth 9101 and stator detection tooth 9109 is constituted by stator, bridge arm XADBy fixed
Coil on son detection tooth 9107 and stator detection tooth 9115 is constituted, bridge arm XAETooth 9102 and stator detection tooth are detected by stator
Coil on 9110 is constituted, bridge arm XAFDetect that the coil on tooth 9108 and stator detection tooth 9116 is constituted by stator, bridge arm XBCBy
Stator detects that the coil on tooth 9103 and stator detection tooth 9111 is constituted, bridge arm XBDTooth 9105 and stator detection tooth are detected by stator
Coil on 9113 is constituted, bridge arm XBEDetect that the coil on tooth 9104 and stator detection tooth 9112 is constituted by stator, bridge arm XBFBy
Stator detects that the coil on tooth 9106 and stator detection tooth 9114 is constituted.
6 contacts A, B, C, D, E, F of many bridge arm bridge circuits are drawn with 6 leads detect dress as the anglec of rotation respectively
The lead put, wherein being excitation lead from contact A and the B lead drawn, draws from contact C, D, E, F lead drawn for signal
Line.
Signal processing apparatus in the present embodiment is identical with the signal processing apparatus of the 8th embodiment.Wherein, field circuit
Output end output excitation signal, be connected with the excitation end A and B of rotation angle detection apparatus；Rotation angle detection apparatus it is anti-
Feedback signal end C, D are connected to the input of the first wave filter of signal processing apparatus, defeated after filtering out interference through the first wave filter
Go out signal and be sent to the first differential amplifier circuit, the differential amplification signal after the first differential amplifier circuit enters the first signal acquisition
The input of circuit；Feedback signal terminal E, F of rotation angle detection apparatus is connected to the second wave filter of signal processing apparatus
Input, the output signal after filtering out interference through the second wave filter is sent to the second differential amplifier circuit, through the second differential amplification electricity
Differential amplification signal behind road enters the input of secondary signal Acquisition Circuit.Time control circuit control field circuit output excitation letter
Number and by the set signal acquisition circuit of sampling rhythm control first and secondary signal Acquisition Circuit to the anglec of rotation detect fill
The position signalling that the feedback signal progress sampling processing put is obtained after position signalling, sampling processing sends angle calculation circuit meter to
Calculate the anglec of rotation.
In the present embodiment, signal acquisition circuit is that (in the present invention, signal acquisition circuit can also be same to signal sample circuit
Walk detecting circuit).
In the present embodiment, signal generation and the principle handled are as follows：
Make stator detect tooth 9101,9102,9103,9104,9105,9106,9107,9108,9109,9110,9111,
9112nd, the inductance of the coil on 9113,9114,9115,9116 be respectively L101, L102, L103, L104, L105, L106,
L107、L108、L109、L110、L111、L112、L113、L114、L115、L116.It can be seen from Figure 15 a and Figure 15 b with
The change of the anglec of rotation of rotor, the gap between each stator detection tooth and rotor with salient pole changes so that the electricity of each coil
Sense changes therewith, and its period of change number is 60.The inductance of each coil with rotor anglec of rotation θ m8Change can represent respectively
For：
L101=L105=L109=L113=L9+Lm9*sin(60θm9) formula (901)
L102=L106=L110=L114=L9+Lm9*sin(60θm9+ 90) formula (902)
L103=L107=L111=L115=L9+Lm9*sin(60θm9+ 180) formula (903)
L104=L108=L112=L116=L9+Lm9*sin(60θm9+ 270) formula (904)
Wherein, L9 is the DC component of each inductance in the present embodiment；
Lm9For the fundamental voltage amplitude of each inductance in the present embodiment；
θm9For the anglec of rotation of rotor in the present embodiment.
The setting of tooth and winding is detected according to above stator, is easy to draw by simple computation, many bridge arm bridge circuits
Contact C and D between differential signal voltage (the first signal voltage), with the differential signal voltage (second between contact E and F
Signal voltage) the ratio between be the anglec of rotation on rotor tan.In the present embodiment, by node C, D by wave filter and
Differential amplifier circuit connects the first signal acquisition circuit, and node E, F are believed by wave filter and differential amplifier circuit connection second
Number Acquisition Circuit, angle calculation circuit can calculate the anglec of rotation of rotor according to the first signal voltage and secondary signal voltage
Degree.
By formula (901)-formula (904), stator detects many bridges of the coil on tooth 9101,9105,9109 and 9113 in Figure 16
Position in arm-type circuit can be exchanged；Stator detects many bridge arms of the coil on tooth 9102,9106,9110 and 9114 in Figure 16
Position in formula circuit can be exchanged；Stator detects many bridge arm types of the coil on tooth 9103,9107,9111 and 9115 in Figure 16
Position in circuit can be exchanged；Coil on stator detection tooth 9104,9108,9112 and 9116 is electric in Figure 16 many bridge arm types
Position in road can be exchanged.
In addition to there is the 8th embodiment, due to being provided with attached tooth in the present embodiment, it can realize and use small-sized rotation
Gyration detection means obtains the high position signalling of periodicity, that is, realizes the high precision position of small rotary angle detection device
Detection, reduces the volume and weight of system.
Tenth embodiment：
In the present embodiment, angle sensing device, which includes two rotation angle detection apparatus, (in the present invention, can also include two
Rotation angle detection apparatus more than individual) and two signal processing apparatus, each rotation angle detection apparatus is only including a set of inspection
Test coil system.Therefore, the rotation angle detection apparatus altogether comprising two sets detection coil systems (in of the invention, detection coil system
The quantity of system is equal with the quantity of signal processing apparatus and connects correspondingly).Two sets of detection coil systems and two signals
Processing unit is connected correspondingly.
Wherein, the first rotation angle detection apparatus is identical with the first rotation angle detection apparatus in the 5th embodiment；The
Two rotation angle detection apparatus are identical with the rotation angle detection apparatus in the 9th embodiment, are provided with attached tooth；At two signals
Manage device identical with the signal processing apparatus in the 8th embodiment.
In first signal processing apparatus, the output end output excitation signal of field circuit is detected with first anglec of rotation and filled
Excitation end A1 and the B1 connection put；Feedback signal terminal C1, D1 of first rotation angle detection apparatus is connected to the first signal transacting
The input of first wave filter of device, the output signal after filtering out interference through the first wave filter is sent to the first differential amplification electricity
Road, the differential amplification signal after the first differential amplifier circuit enters the input of the first signal acquisition circuit；First anglec of rotation
Feedback signal terminal E1, F1 of degree detection means is connected to the input of the second wave filter of signal processing apparatus, through the second filtering
The output signal that device filters out after interference is sent to the second differential amplifier circuit, the differential amplification signal after the second differential amplifier circuit
Into the input of secondary signal Acquisition Circuit.Time control circuit control field circuit output excitation signal simultaneously presses set sampling
The first signal acquisition circuit and secondary signal Acquisition Circuit of the signal processing apparatus of rhythm control first are detected to the anglec of rotation and filled
The position signalling that the feedback signal progress sampling processing put is obtained after position signalling, sampling processing sends its angle calculation circuit to
Calculate the anglec of rotation.
It is readily obtained according to first embodiment identical analysis method, the differential signal voltage between contact C1 and D1
The ratio between differential signal voltage (secondary signal voltage) between (the first signal voltage), with contact E1 and F1 is the rotation on rotor
The function of gyration.Therefore, in the present embodiment, contact C1, D1 are connected into the first signal by wave filter and differential amplifier circuit
First signal acquisition circuit of processing unit, contact E1, F1 are connected at the first signal by wave filter and differential amplifier circuit
The secondary signal Acquisition Circuit of device is managed, angle calculation circuit can be counted according to the first signal voltage and secondary signal voltage
Calculate the anglec of rotation of rotor.Also, rotor often rotates a circle, the periodicity of this signal is 1, it can thus be concluded that to the exhausted of rotor
To position.
In secondary signal processing unit, the output end output excitation signal of field circuit is detected with second anglec of rotation and filled
Excitation end A2 and the B2 connection put；Feedback signal terminal C2, D2 of second rotation angle detection apparatus is connected to secondary signal processing
The input of first wave filter of device, the output signal after filtering out interference through its first wave filter is sent to its first differential amplification
Circuit, the differential amplification signal after its first differential amplifier circuit enters the input of its first signal acquisition circuit；Second
Feedback signal terminal E2, F2 of rotation angle detection apparatus is connected to the input of the second wave filter of secondary signal processing unit,
Output signal after filtering out interference through its second wave filter is sent to its second differential amplifier circuit, through its second differential amplifier circuit
Differential amplification signal afterwards enters the input of its secondary signal Acquisition Circuit.Its time control circuit controls the output of its field circuit to encourage
Magnetic signal is simultaneously revolved by its first signal acquisition circuit of set sampling rhythm control and its secondary signal Acquisition Circuit to second
The position signalling that the feedback signal progress sampling processing of gyration detection means is obtained after position signalling, sampling processing sends it to
Angle calculation circuit counting goes out the anglec of rotation.
Easily drawn according to first embodiment identical analysis method, the differential signal voltage between contact C2 and D2
The ratio between differential signal voltage (the 4th signal voltage) between (the 3rd signal voltage), with contact E2 and F2 is the rotation on rotor
The tan of gyration.Therefore, in the present embodiment, contact C2, D2 are passed through into wave filter and differential amplifier circuit connection second
One signal acquisition circuit of signal processing apparatus, contact E2, F2 are believed by wave filter and differential amplifier circuit connection second
Another signal acquisition circuit of number processing unit, angle calculation circuit is according to the 3rd signal voltage and the 4th signal voltage, i.e.,
The anglec of rotation of rotor can be calculated.Also, rotor often rotates a circle, the periodicity of this signal is 60.
In second rotation angle detection apparatus, rotor often rotates 1 week, and the inductance of coil changes 60 cycles, i.e. rotor is every
Turn 6 degree of position signallings and change 1 cycle, thus being combined with the result of the first rotation angle detection apparatus can be for subdivision test
Interval, greatly improves accuracy of detection.
In the present invention, field circuit, signal acquisition circuit and angle calculation circuit can be realized by signal processing chip.Signal
Bandpass filter can be provided between process chip and rotation angle detection apparatus, or provided with low-resistance (low frequency blocking) wave filter,
Difference amplifier is may also set up.In the present invention, signal processing chip can be R/D converter chips.
In the present invention, time control circuit can be also connected with angle calculation circuit, to control angle counting circuit according to regulation
Beat calculates the anglec of rotation of rotor.
In the present invention, can by analog circuit of setting signal Acquisition Circuit, digital circuit, or for numeral and simulation mixing
Circuit；It is digital circuit to set angle calculation circuit, or is digital and anologue circuit.
In (including the various embodiments described above) of the invention, rotation angle detection apparatus may each be rotary transformer.
In the rotation angle detection apparatus of the various embodiments described above, rotor is arranged in the inside of stator.In the present invention, turn
Son can also be arranged in the outside of stator.
In the present invention, angle calculation circuit can be the chip with arctangent computation and division calculation (proportional component).
In the rotation angle detection apparatus of the various embodiments described above, the shape of rotor with salient pole is respectively provided with, to cause each coil
Inductance changing unit with the anglec of rotation of rotor be changing into sine wave change.In the present invention, it can also set and turn
The shape of sub- salient pole, to cause the changing unit of inductance of each coil to become with the triangular wave that is changing into of the anglec of rotation of rotor
Change.
The invention also provides a kind of rotary body with above-mentioned angle sensing device.The rotary body includes rotary body body
With above-mentioned angle sensing device.Wherein, the rotation angle detection apparatus of angle sensing device is installed with rotary body body and caused, angle
Spend the anglec of rotation and the anglec of rotation established practice of the rotor of rotary body body of the rotor of the rotation angle detection apparatus of detection device
(i.e. both relation then can mutually convert into deterministic functional relation.In following two embodiments, both are equal；
In the present invention, both can also phase difference constant angle, can pass through the technological means such as gear mechanism connect the anglec of rotation detect
Device and rotary body body cause into certain proportionate relationship of above-mentioned two angle etc.), therefore, it is possible to be set by angle detection
The anglec of rotation of standby detection obtains the anglec of rotation of rotary body body.
11st embodiment：
In the present embodiment, rotary body body is motor (in the present invention, the rotary body body can also be generator).Figure
17 show rotation angle detection apparatus and the structural representation of rotary body body connection in the present embodiment.In Figure 17,1101 tables
Show the casing that rotation angle detection apparatus is shared with motor, 1102 represent the stator of rotation angle detection apparatus, the anglec of rotation
The stator 1102 of detection means is arranged on the casing 1101 shared with rotary body body；1103 represent the stator of motor,
1104 represent the rotor core of rotation angle detection apparatus, and 1105 represent the rotor core of motor, rotation angle detection apparatus
The rotor core 1105 of rotor core 1104 and motor rotate together with, 1106 represent rotating shafts, rotation angle detection apparatus
Rotor core 1104 is arranged on the rotor 1106 of rotary body body, and 11071,11072 represent front and rear cover respectively, and 1108 represent
Bearing, it is ensured that rotor relative stator is smooth to be rotated, and 11091,11092,11093,11094,11095,11096 represent the anglec of rotation
The lead-out wire of detection means, 11091 and 11092 be excitation lead, and 11093,11094,11095,11096 be signal lead,
11010 represent the lead of motor, and 11011 represent rotation angle detection apparatus coil, and 11012 represent motor winding.This reality
Apply in example, rotation angle detection apparatus and the integrated structure of motor drive mechanism of angle sensing device.
12nd embodiment：
In the present embodiment, rotary body body is motor (in the present invention, the rotary body body can also be generator).Figure
18 show rotation angle detection apparatus and the structural representation of rotary body body connection in the present embodiment.In Figure 18,1201 tables
Show rotation angle detection apparatus, 1202 represent motor, and 1203 represent motor rotary shaft, and 1204 represent rotation angle detection apparatus
Lead-out wire, 1205 represent motor lead line, and 1206 be screw.In the present embodiment, rotation angle detection apparatus 1201 is arranged on electricity
The end of motivation 1202, motor rotary shaft 1203 is connected synchronous rotary (Figure 18 with shaft coupling with rotation angle detection apparatus rotating shaft
Not shown in).As can be seen here, in the present embodiment, rotation angle detection apparatus and the motor body of angle sensing device are to divide
Body formula.
The invention also provides a kind of electric motor system for including above-mentioned rotary body.The electric motor system also includes motor
Drive circuit.The motor drive circuit is connected with signal processing apparatus, is driven with the signal exported according to signal processing apparatus
Motor.
13rd embodiment：
In the present embodiment, rotary body body is permanent magnet motor (in the present invention, or magneto), itself and rotation
The connection of gyration detection means is such as the 11st embodiment (or such as the 12nd embodiment).Figure 19 show the present embodiment
The structural representation of middle electric motor system.
In the present embodiment, rotation angle detection apparatus use with second embodiment identical rotation angle detection apparatus, its
Rotor with salient pole number is 2.Motor is three-phase permanent magnet motor, and the p-m rotor number of pole-pairs of the three-phase permanent magnet motor is 2 (this hair
In bright, the salient pole number of rotation angle detection apparatus is equal with the p-m rotor number of pole-pairs of rotary body body；Or, work as the anglec of rotation
When the salient pole number of detection means is 1, the p-m rotor number of pole-pairs of rotary body body is any positive integer).
In the present embodiment, signal processing apparatus includes low-cut filter and R/D converters, and low-cut filter blocks for low frequency
Wave filter, is connected between rotation angle detection apparatus and R/D converters.As shown in figure 19, R/D converters output excitation signal
To the excitation end of rotation angle detection apparatus, the output signal of rotation angle detection apparatus is sent to the input of signal processing apparatus
End, sends R/D converters to through the filtered position signalling of low-resistance, obtains the anglec of rotation of the rotor of rotation angle detection apparatus
Degree, so as to obtain the rotor angle of motor.R/D converters send this rotor angle to motor drive circuit, motor
Drive circuit is carried out according to the signal (i.e. digitlization angle-data in Figure 19) and operating instruction of the rotor angle to motor
Control.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using this hair
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to implementation here
Example, those skilled in the art do not depart from improvement that scope made and change all should be according to the announcement of the present invention
Within protection scope of the present invention.
Claims (20)
1. a kind of angle sensing device, it is characterised in that：Including rotation angle detection apparatus and signal processing apparatus；
The rotation angle detection apparatus includes stator, rotor and multiple coils；The stator includes stator yoke and positioned at described
Stator detection tooth in stator yoke；Each coil is wound on stator detection tooth, at most around one on each stator detection tooth
The individual coil, the inductance of each coil changes with the change of the anglec of rotation of the rotor, for detection institute
State the anglec of rotation of rotor；
The rotation angle detection apparatus includes at least a set of detection coil system, and often covering the detection coil system is included by many
Many bridge arm bridge circuits of at least 4 row parallel connections of the individual coil composition, each column bridge arm includes at least two bridge arms, each bridge arm
Including at least one coil；Two of many bridge arm bridge circuits and interface draw two leads as excitation lead, from
The contact of the upper and lower bridge arm of each column bridge arm draws a lead as signal lead；
The signal processing apparatus includes field circuit, to connect the excitation lead and provide excitation letter for the excitation lead
Number；Signal acquisition circuit including connecting the signal lead, to gather the signal of the signal lead output；And including angle
Counting circuit is spent, to connect the signal acquisition circuit and calculate the anglec of rotation of the rotor；
Often cover in the detection coil system, two signal leads are connected to the signal acquisition circuit, its differential signal
Generate the first signal voltage changed with the anglec of rotation of the rotor；Other two signal leads are connected to the signal
Acquisition Circuit, its differential signal generates the secondary signal voltage changed with the anglec of rotation of the rotor, with according to the first signal
The anglec of rotation of rotor described in voltage and secondary signal voltage detecting.
2. angle sensing device according to claim 1, it is characterised in that：The rotor has rotor with salient pole；It is described fixed
The material of sub- yoke, stator detection tooth and the rotor with salient pole is permeability magnetic material；
Preferably, many bridge arm bridge circuits are only comprising 4 row bridge arm in parallel；The rotation angle detection apparatus contains 2 altogether
Root excitation lead and 4 signal leads；
Preferably, the stator detection number of teeth is 8*K, and rotor with salient pole number is N；Wherein, K and N are positive integer；It is further preferred that K
It is equal to 2 equal to 1, N；
Preferably, circumferential surface distribution of the stator detection tooth along the side closer to the rotor of the stator yoke, phase
Adjacent stator detection tooth is separated by arrangement, to cause the phase of the first signal voltage and secondary signal voltage to differ the angle of setting；
Preferably, the stator also includes stator and decouples on tooth, stator decoupling tooth not wound around coil, and coil is wound with to reduce
The stator detection tooth between magnetic coupling；The stator decoupling tooth is arranged on the two of the stator detection tooth for being wound with coil
Side, is wound between the stator of coil detection tooth at least provided with 1 stator decoupling tooth；The material of the stator decoupling tooth is to lead
Magnetic material；
Preferably, the stator also includes stator assist tooth, not wound around coil on the stator assist tooth, to improve magnetic circuit system
Symmetry；The stator assist tooth is arranged on the outside that the stator detects tooth；The material of the stator assist tooth is magnetic conduction
Material；
Preferably, the angle that the stator yoke is crossed over is less than 360 degree；
Preferably, the shape of the rotor with salient pole is set, with cause each coil inductance changing unit with described
The sine wave that is changing into of the anglec of rotation of rotor changes；Or, the shape of the rotor with salient pole is set, to cause each line
The changing unit of the inductance of circle is changing into triangular wave change with the anglec of rotation of the rotor；
Preferably, the angle sensing device has stator cage, end cap, bearing and rotating shaft；The stator includes stator core,
The stator core is arranged on the stator cage；The rotor includes rotor core, and the rotor core is arranged on described
In rotating shaft, rotated jointly with the whole rotor；
Preferably, the rotor is arranged in the inside of the stator；Or, the rotor is arranged in the outside of the stator.
3. angle sensing device according to claim 1, it is characterised in that：The rotation angle detection apparatus is included at least
Two sets of detection coil systems；At least two sets detection coil systems are arranged on same stator；
The angle sensing device has the equal numbers of signal processing apparatus with the detection coil system, the detection line
Circle system is connected correspondingly with the signal processing apparatus；
Preferably, signal processing apparatus described at least two shares same field circuit, and/or shares same time control electricity
Road, and/or share same angle calculation circuit；
Preferably, respectively cover between the detection coil system, excitation lead is shared, signal lead is independent；Or, respectively cover the inspection
Between test coil system, excitation lead is independent, and signal lead is independent.
4. angle sensing device according to claim 1, it is characterised in that：The angle sensing device includes at least two
Rotation angle detection apparatus；
The angle sensing device includes the signal processing apparatus equal with the detection coil number of systems, the signal transacting
Device is connected correspondingly with the detection coil system；
Preferably, signal processing apparatus described at least two shares same field circuit, and/or shares same time control electricity
Road, and/or share same angle calculation circuit；
Preferably, at least two rotation angle detection apparatus at least includes the first rotation angle detection apparatus and the second rotation
Angle detection device；The rotor of first rotation angle detection apparatus only includes 1 rotor with salient pole；Second rotation angle detection apparatus
Rotor include the rotor with salient pole of 2 or more than 2；At least rotor of the first rotation angle detection apparatus and second anglec of rotation
The rotor of detection means is set to synchronous axial system；
Preferably, the stator detection number of teeth of the first rotation angle detection apparatus is 8*M, and M is positive integer；
Preferably, in the second rotation angle detection apparatus, the stator detection number of teeth is 8*X, and rotor with salient pole number is (Y+1)；Wherein, X
It is positive integer with Y.
5. angle sensing device according to claim 1, it is characterised in that：The signal acquisition circuit is signal sampling electricity
Road；Or, the signal acquisition circuit is synchro detection circuit.
6. angle sensing device according to claim 1, it is characterised in that：The excitation signal is believed for sine voltage source
Number, sine-wave current source signal, square-wave voltage source signal or trapezoidal wave voltage source signal.
7. angle sensing device according to claim 1, it is characterised in that：The angle sensing device only includes a letter
Number Acquisition Circuit, the signal acquisition circuit be it is time sharing shared, with a cycle timesharing detect that the anglec of rotation is examined
Survey the different output signals of device；
Or, the angle sensing device includes two signal acquisition circuits, to detect the rotation angle detection apparatus respectively
Different output signals.
8. angle sensing device according to claim 1, it is characterised in that：The signal processing apparatus also includes time control electricity
Road；The time control circuit is all connected with the field circuit and the signal acquisition circuit, to control the field circuit to provide
The signal acquisition beat of the excitation signal and the control signal acquisition circuit；
Preferably, the time control circuit is also connected with the angle calculation circuit, to control the angle calculation circuit according to rule
Fixed beat calculates the anglec of rotation of rotor；
Preferably, the signal processing apparatus includes two signal acquisition circuits.
9. angle sensing device according to claim 1, it is characterised in that：The input connection of the signal acquisition circuit
There is wave filter, to be filtered processing to the signal that the signal lead is exported；
Preferably, the signal processing apparatus includes wave filter described in two groups and the signal acquisition circuit；
Preferably, the wave filter is bandpass filter；
Preferably, the wave filter is low-cut filter, and the low-cut filter is that low frequency blocks wave filter.
10. angle sensing device according to claim 1, it is characterised in that：The signal acquisition circuit and the angle
Low pass filter is connected between counting circuit, low-pass filtering treatment is carried out with the signal exported to the signal acquisition circuit；
Preferably, the signal processing apparatus includes low pass filter described in two groups and the signal acquisition circuit.
11. angle sensing device according to claim 1, it is characterised in that：The signal acquisition circuit includes difference ring
Section.
12. angle sensing device according to claim 1, it is characterised in that：Also include differential amplifier circuit；The difference
The input of amplifying circuit connects at least two signal leads of the rotation angle detection apparatus, to receive the anglec of rotation
The output signal of detection means simultaneously carries out differential amplification processing；The output end of the differential amplifier circuit connects the signal acquisition
The input of circuit, the signal after differential amplification is handled is sent to the signal acquisition circuit；
Preferably, the signal processing apparatus includes differential amplifier circuit described in two groups and the signal acquisition circuit；
Preferably, filtering is additionally provided between the signal lead of the rotation angle detection apparatus and the differential amplifier circuit
Device.
13. angle sensing device according to claim 1, it is characterised in that：The signal acquisition circuit is analog circuit；
Or, the signal acquisition circuit is digital circuit；
Or, the signal acquisition circuit is digital and anologue circuit.
14. angle sensing device according to claim 1, it is characterised in that：The angle calculation circuit is digital circuit；
Or, the angle calculation circuit is digital and anologue circuit.
15. angle sensing device according to claim 1, it is characterised in that：The stator detects tooth along the stator yoke
The side closer to the rotor circumferential surface distribution, adjacent stator detection tooth is separated by the angle arrangement of setting so that
Obtain the tan that the ratio between the first signal voltage and secondary signal voltage are the anglec of rotation on rotor.
16. angle sensing device according to claim 1, it is characterised in that：The stator detects tooth close to the rotor
Periphery be provided with two or more attached teeth, the material of the attached tooth is permeability magnetic material；
Preferably, shape and the position of the attached tooth are set so that the changing unit of the inductance of the stator detection tooth coil
It is in sinusoidal variations with the anglec of rotation of rotor, to cause the ratio between the first signal voltage and secondary signal voltage to be the rotation on rotor
The tan of gyration, to detect the anglec of rotation of the rotor；
Preferably, 3 attached teeth are provided with each stator detection tooth.
17. angle sensing device according to claim 1, it is characterised in that：The field circuit, signal acquisition electricity
Road and the angle calculation circuit are realized by signal processing chip；
Preferably, bandpass filter is provided between the signal processing chip and the rotation angle detection apparatus；
Preferably, low-cut filter, the low-resistance are provided between the signal processing chip and the rotation angle detection apparatus
Wave filter is that low frequency blocks wave filter；
Preferably, the signal processing chip is R/D converter chips.
18. a kind of rotary body of the angle sensing device comprising any one of claim 1 to 17, it is characterised in that：Also
Including rotary body body；
The angle sensing device is configured so that with the rotary body body, and the rotation is detected by the angle sensing device
Turn the anglec of rotation of body.
19. rotary body according to claim 18, it is characterised in that：The rotor core peace of the rotation angle detection apparatus
In the rotating shaft of the rotary body body, with the rotary body body synchronous axial system and formed integral structure, to detect
State the anglec of rotation of rotary body body；The stator of the rotation angle detection apparatus is arranged on what is shared with the rotary body body
On stator cage；Preferably, the rotary body body is motor or generator；
Or, the rotation angle detection apparatus is fixed on the end of the rotary body body；The rotation angle detection apparatus
Rotating shaft be connected to cause the rotation angle detection apparatus and the rotary body body same with the rotating shaft of the rotary body body
Step is rotated；Preferably, the rotating shaft of the rotation angle detection apparatus is connected with the rotating shaft of the rotary body body by shaft coupling；
Preferably, the rotary body body is motor or generator.
20. a kind of electric motor system of the rotary body comprising described in claim 18 or 19, it is characterised in that：The motor system
System also includes motor drive circuit；The motor drive circuit is connected with signal processing apparatus, with according to signal processing device
Put the signal drive motor of output；
Preferably, rotary body body is magneto or permanent magnet motor；It is further preferred that rotation angle detection apparatus
Salient pole number it is equal with the p-m rotor number of pole-pairs of rotary body body；Or, when the salient pole number of rotation angle detection apparatus is 1
When, the p-m rotor number of pole-pairs of rotary body body is any positive integer；
Preferably, signal processing apparatus includes low-cut filter and R/D converters, and the low-cut filter is connected to the anglec of rotation
Between detection means and the R/D converters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647598.7A CN107276323B (en) | 2017-08-01 | Angle detection equipment, rotating body and motor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647598.7A CN107276323B (en) | 2017-08-01 | Angle detection equipment, rotating body and motor system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107276323A true CN107276323A (en) | 2017-10-20 |
| CN107276323B CN107276323B (en) | 2024-04-19 |
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| CN109443193A (en) * | 2018-12-24 | 2019-03-08 | 上海世昱电子技术有限公司 | A kind of method and rotation angle detection apparatus for screening rotation angle detection apparatus |
| CN110081914A (en) * | 2018-01-25 | 2019-08-02 | 上海世昱电子技术有限公司 | A kind of rotation angle sensing device |
| CN112325910A (en) * | 2019-07-30 | 2021-02-05 | 奥特润株式会社 | Method and device for realizing driving signal of rotary transformer sensor and storage medium |
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