CN105897078A - Rotary transformer signal hardware decoding circuit applied to EPS (Electric Power Steering) system - Google Patents
Rotary transformer signal hardware decoding circuit applied to EPS (Electric Power Steering) system Download PDFInfo
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- CN105897078A CN105897078A CN201610220150.2A CN201610220150A CN105897078A CN 105897078 A CN105897078 A CN 105897078A CN 201610220150 A CN201610220150 A CN 201610220150A CN 105897078 A CN105897078 A CN 105897078A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
Abstract
The invention discloses a rotary transformer signal hardware decoding circuit applied to an EPS (Electric Power Steering) system, which comprises a rotary transformer decoding chip, a rotary transformer excitation signal push-pull amplification circuit, a rotary transformer, a rotary transformer output signal processing circuit and an encoder signal processing circuit. Special signal processing is carried out both input and output of the rotary transformer decoding chip, the hardware circuit is used for directly decoding the output signal of the rotary transformer detecting the motor rotor position to a standard encoder signal commonly used by an EPS controller main control chip, the compatibility problem between the EPS controller designed based on the encoder signal and a permanent magnet synchronous motor by using the rotary transformer to detect the motor rotor position is solved, and the application flexibility of the permanent magnet synchronous motor based on the rotary transformer is improved.
Description
Technical field
The present invention relates to EPS motor controller development technique field, particularly relate to one and apply in EPS
Middle signals of rotating transformer hardware decoding circuit.
Background technology
Rotation power transformation machine because of its shock resistance vibrations and temperature humidity change very capable, it is adaptable to working environment is disliked
Bad occasion.Along with rotation power transformation machine is in the extensive application in each fields such as industry, agricultural, space flight, revolve power transformation machine
Also synchronized development is obtained in automobile electric booster steering system field.But, current automobile EPS controller
The interface shape of rotor-position signal is many by photoelectric encoder Design of Signal, result in and sets based on code device signal
Meter EPS (Electric Power Steering, electric boosting steering system) controller and rotary transformer
Problem that cannot be compatible between signal, limits permagnetic synchronous motor based on rotary transformer electric boosted
The application of steering.
Summary of the invention
The technical problem existed based on background technology, the present invention proposes one and applies rotation in EPS
Transformer signal hardware decoding circuit.
The one that the present invention proposes applies signals of rotating transformer hardware decoding circuit in EPS, including:
Revolve change decoding chip, rotation change pumping signal pushes away and exerts oneself amplifying circuit, rotary transformer, rotation change output signal process
Circuit and encoder signal processing circuit；
Rotation becomes pumping signal and pushes away the excitation end of the input connection rotation change decoding chip exerting oneself amplifying circuit, its output
End connects the input of rotary transformer；Rotation change pumping signal pushes away exerts oneself amplifying circuit acquisition rotation decoding chip
Pumping signal, and flow to rotary transformer after being amplified and enter duty pair with excitation rotary transformer
Motor rotor position detects；
Rotation becomes the output of the input connection rotary transformer of output signal processing circuit, and its output connects
Rotation becomes the analog input end of decoding chip, and rotation becomes the output of decoding chip and connects encoder signal processing circuit；
Rotation becomes output signal processing circuit and obtains the motor rotor position information of rotary transformer detection and at it
Being transported to rotation after reason and become decoding chip, rotation becomes decoding chip and is decoded the motor rotor position information obtained
After be sent to encoder signal processing circuit, encoder signal processing circuit will rotation become decoding chip decoding letter
Breath is converted into circuit for controlling motor discernible coding information and is sent to circuit for controlling motor.
Preferably, rotation becomes decoding chip and becomes decoding chip into AD2S1210 chip or isonomic rotation.
Preferably, rotation varying signal pushes away and exerts oneself amplifying circuit and be one and use operational amplifier and discrete complementary emitter
The composite amplifier of follower output stage.
Preferably, rotation varying signal pushes away and exerts oneself amplifying circuit and include operational amplifier, the first diode, the two or two pole
Pipe, the first triode and the second triode, wherein, the first triode is N-type pipe, and the second triode is P
Type pipe；The negative-feedback end of operational amplifier pushes away as rotation varying signal exerts oneself input amplifier connection rotation change decoding
Chip excitation end also connects rotation varying signal and pushes away and exert oneself amplification circuit output end, and its positive feedback terminates into the first voltage,
Its power input connects the first supply voltage, and its output connects the first diode cathode and the two or two respectively
Pole pipe positive pole；First diode cathode connects control voltage and the first transistor base respectively by the 6th resistance,
First transistor collector connects the second supply voltage, and its emitter stage connects rotation varying signal by the 9th resistance to be pushed away
Exert oneself amplification circuit output end；Second diode cathode connects the second transistor base, and is connect by the 8th resistance
Ground；Second transistor collector ground connection, its emitter stage is pushed away by the tenth resistance connection rotation varying signal exerts oneself amplification electricity
Road output.
Preferably, operational amplifier connects the first voltage and by the 4th resistance eutral grounding, control by the 3rd resistance
Voltage processed connects the 6th resistance and the first transistor base respectively by the 5th resistance, and the second diode cathode leads to
Cross the 7th resistance and connect the 8th resistance and the second transistor base respectively；Wherein, the 5th resistance and the 8th resistance
Resistance is equal, and the 6th resistance and the 7th resistance are equal, and the 9th resistance and the tenth resistance are equal.
Preferably, operational amplifier connects rotation by the first resistance and becomes decoding chip excitation end, and by second
Resistance connection rotation varying signal pushes away exerts oneself amplification circuit output end, and the second resistor in parallel has the first electric capacity.
Preferably, rotation becomes decoding chip and includes a reference signal end, and it connects rotation change output signal and processes electricity
Road, for rotation become output signal processing circuit conveying reference signal, rotation become output signal processing circuit according to
The output signal of rotary transformer is biased by reference signal.
Preferably, rotation become output signal processing circuit include the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the
11 resistance, the 12nd resistance, first input end, the second input, the first output, the second output
With reference signal input；First input end accesses first sinusoidal signal and more than first of rotary transformer output
String signal, the second input accesses the second sinusoidal signal and second cosine signal of rotary transformer output；The
One input and the second input are respectively by the 4th electric capacity and the 3rd capacity earth, and first input end connects the
One output, the second input connects the second output, the first output and the second output by the second electricity
Holding series connection, reference signal input connects the second output by the 11st resistance, and by the 12nd resistance
Connect the first output.
Preferably, encoder signal processing circuit is by the anti-phase Schmidt trigger of hexadecimal and filter circuit group
Become., its chip used is 74LVC14AD.
The present invention becomes the input of decoding chip to rotation and special signal transacting has all been done in output, fully utilized firmly
The output signal of rotary transformer of detection motor rotor position is directly decoded into EPS controller master control by part circuit
The standard coders signal that chip is conventional, thus solve and design EPS controller based on code device signal and make
With rotary transformer detection motor rotor position permagnetic synchronous motor between compatibling problem, improve based on
The permagnetic synchronous motor application flexibility of rotary transformer.
Signals of rotating transformer hardware decoding circuit simple in construction that what the present invention provided apply in EPS,
The popularization and application of low cost, beneficially EPS.
Accompanying drawing explanation
Fig. 1 is the theory diagram applying the Signal Converting Circuit for Resolver in EPS；
Fig. 2 be the present invention revolve become decoding chip rotation become pumping signal push away the physical circuit figure exerting oneself amplifying circuit；
Fig. 3 is the physical circuit figure that rotary transformer of the present invention rotation becomes output signal processing circuit；
Fig. 4 is the physical circuit figure that the present invention revolves the encoder signal processing circuit becoming decoding chip；
Fig. 5 is rotary transformer input/output signal schematic diagram；
The code device signal schematic diagram that Fig. 6 present invention obtains.
Detailed description of the invention
With reference to Fig. 1, the one that the present invention proposes applies signals of rotating transformer hardware decoding electricity in EPS
Road, including: rotation become decoding chip, rotation become pumping signal push away exert oneself amplifying circuit, rotary transformer, rotation become defeated
Go out signal processing circuit and encoder signal processing circuit.
Rotation becomes pumping signal and pushes away the excitation end of the input connection rotation change decoding chip exerting oneself amplifying circuit, its output
End connects the input of rotary transformer.Rotation change pumping signal pushes away exerts oneself amplifying circuit acquisition rotation decoding chip
Pumping signal, and flow to rotary transformer after being amplified and enter duty pair with excitation rotary transformer
Motor rotor position detects.In present embodiment, rotation becomes decoding chip and uses AD2S1210 chip, tool
When body is implemented, rotation becomes decoding chip and may be used without AD2S1210 isonomic rotation change decoding chip.
AD2S1210 is a rotation parameter word conversion chip, and its principal performance and parameter be: 1. (5 scholar 5%) V
Single supply is powered；2. the highest following rate that exports in real time of 16 bit resolutions is 125r/s, exports 16 definitely
Positional information and signed 15 bit rate information；3. there is sinusoidal wave crystal resonator able to programme；4. preferable input
Amplitude requirement is 3.15Vp-p；5. excitation frequency is 10kHz, and 12kHz, 20kHz are able to programme.Present embodiment
Using the driving frequency of acquiescence 10kHz, pumping signal EXC and the NEXC Single-end output of AD2S1210 output are
3.6Vp-p, and center voltage is 2.5V, it is 7.2Vp-p that rotation becomes pumping signal EXC to NEXC difference output.
This chip is applicable to various brushless rotation and becomes the analog-to-digital conversion of output signal, and antijamming capability is strong.
Driving voltage EXC_OUT to the NEXC_OUT Differential Input value virtual value of rotary transformer is (8.2 scholars
20%) V, peak-to-peak value (Vp-p) is (11.5 scholar 20%) V, and the internal resistance that rotation becomes is 100 200, conversion ratio
It is 0.286.In present embodiment, rotary transformer uses the brushless resovler 15VRX of NMB company,
Changing ratio into 0.286, excitation signal amplitude is 12V, and driving frequency is 10kHz.In present embodiment, rotation
The pumping signal becoming decoding chip generation is 7.2V, it is seen that the excitation signal amplitude that rotation becomes decoding chip output is remote
The pumping signal accessible less than rotary transformer, so, present embodiment arranges rotation varying signal and pushes away to exert oneself and put
Big circuit becomes the pumping signal of decoding chip output and is amplified rotation.
Due to, the rotary transformer used in present embodiment changes ratio into 0.286, therefore, if only used
One unity gain buffer AD8662 coordinates AD2S1210 to use, then the amplitude of rotation change device output is the poorest
Divide 2V peak-to-peak value (3.6*2*0.286=2.06V).The underswing of this signal is to meet AD2S1210
Input range requirement.So, in present embodiment, it is provided with rotation varying signal and pushes away and exert oneself amplifying circuit.Push away and exert oneself
The effect of amplifying circuit is pumping signal EXC/NEXC (3.6V peak-to-peak value) that rotation becomes decoding chip output
Carry out voltage amplification and electric current is strengthened.
With reference to Fig. 2, in present embodiment, rotation varying signal pushes away exerts oneself amplifying circuit and is one and uses binary channels, low noise
Sound, precision operational-amplifier and the composite amplifier of discrete complementary emitter follower output stage.Wherein, fortune
The effect calculating amplifier is regulation excitation signal amplitude, and the effect of discrete complementary emitter follower is to increase electricity
Stream driving force.
Discrete complementary emitter follower includes the first diode D1, the second diode D2, the first triode Q1
With the second triode Q2, wherein, the first triode Q1 is N-type pipe, and the second triode Q2 is p-type pipe.
The negative-feedback end of operational amplifier U1 pushes away as rotation varying signal exerts oneself input amplifier connection rotation change decoding chip
Excitation end also connects rotation varying signal and pushes away and exert oneself amplification circuit output end, and its positive feedback end is connected by the 3rd resistance R3
First voltage VDD1 also passes through the 4th resistance R4 ground connection, and its power input connects the first supply voltage VDD2
Being powered, its output connects the first diode D1 negative pole and the second diode D2 positive pole respectively.
First diode D1 positive pole connects control voltage VDD3 and the first triode respectively by the 6th resistance R6
Q1 base stage, the first triode Q1 colelctor electrode connects the second supply voltage VDD4, and its emitter stage is by the 9th electricity
Resistance R9 connection rotation varying signal pushes away exerts oneself amplification circuit output end.In present embodiment, control voltage VDD3 series connection
The 6th resistance R6 and the first triode Q1 base stage, the 5th resistance R5 series connection is connected respectively after 5th resistance R5
Dividing potential drop, carries out voltage-limiting protection to the first diode D1 and the first triode Q1.
Second diode D2 negative pole connects the second triode Q2 base stage, and by the 8th resistance R8 ground connection.The
Two triode Q2 grounded collectors, its emitter stage is pushed away by the tenth resistance R10 connection rotation varying signal exerts oneself amplification electricity
Road output.In present embodiment, after the second diode D2 negative pole series connection the 7th resistance R7, connect the respectively
Eight resistance R8 and the second triode Q2 base stage.The setting of the 7th resistance R7 advantageously reduces the second diode D2
Both positive and negative polarity pressure reduction, and reduce the second triode Q2 base voltage.
Ideally, sine and cosine input after rotation varying signal processing circuit processes should have difference 3.15V
The amplitude of peak-to-peak value, it is therefore desirable to carry out the gain of 1.5 times.In present embodiment, operational amplifier U1
Connect rotation by the first resistance R1 and become decoding chip excitation end, and connect rotation varying signal by the second resistance R2
Push away and exert oneself amplification circuit output end.Width is exported by the first resistance R1 and the second adjustable pumping signal of resistance R2
Value realizes gain, depending on resistance can become, according to rotation, the signal amplitude size that decoding chip needs.
Being parallel with the first electric capacity C1 on second resistance R2, it is used for being filtered the pumping signal of input, electricity
Capacitance is selected according to the frequency of pumping signal.Specifically, the second resistance R2 and the first electric capacity C1 forms RC filter
Wave circuit, carries out LPF to excitation signal EXC/NEXC.
During specific experiment detection, the value of the first resistance R1 and the second resistance R2 is respectively 10k Ω and 15.4
K Ω, corresponding gain is 1.54.Electric capacity C1 one low pass filter of formation in parallel with resistance R2, is used for filtering
Except any noise that may be present in EXC and NEXC output, C1 capacitance is selected according to the frequency of pumping signal
For 120pF.3rd resistance R3 and the 4th R4 arranges the common-mode voltage VCM (2) of amplifier, the 3rd resistance
The resistance of R3 and the 4th R4 is respectively 10k Ω and 22k Ω,
Common-mode voltage VCM (1)=+ 2.5V (for AD2S1210 supply voltage half) of excitation output.Therefore,
Buffer output common mode voltage VCM (OUT) is about+5.7V (+12V power supply only about half of, it is simply that push away and exempt from
The central value of amplifying circuit output EXC_OUT/NEXC_OUT).
During specific experiment, excitation output signal EXC_OUT/NECX_OUT is positive signal, by EXC_OUT
Send into rotary transformer primary using difference form as excitation with NEXC_OUT, record rotary transformer output
Signal is normal, can consecutive variations, there is no slicing, the output of rotary transformer secondary just, cosine signal warp
It is consistent that the decoded digital quantity of AD2S1210 becomes rotational angle with rotation, and this circuit design success is described.
In present embodiment, operational amplifier and discrete complementary emitter follower are powered and are single-ended+12V confession
Electricity, the i.e. first supply voltage VDD2 and the second supply voltage VDD4 are+12V.
In present embodiment, the 5th resistance R5, the 6th resistance R6 the first diode D1, the second diode D2,
7th resistance R7 and the 8th resistance R8 liquor-saturated one-tenth biasing circuit are to eliminate the intermodulation distortion that triode produces.This reality
Execute in mode, resistance the 9th less resistance R9 and the tenth resistance R10 be set, increase the first triode Q1 and
Voltage between the two or three grade of Q2 base stage so that the voltage between Q1 and Q2 base stage is slightly larger than Q1 and Q2 emitter junction
Cut-in voltage sum (approximately equal to D1 and D2 forward voltage drop and), so, two triode Q1 and Q2
Also faint conducting is can guarantee that when static state.In present embodiment, the 5th resistance R5 and the 8th resistance R8 resistance
It is worth equal and is 2.2k Ω, the 6th resistance R6 and the 7th resistance R7 resistance is equal and be 3 Ω, the 9th resistance
R9 and the tenth resistance R10 resistance is equal and be 4.7 Ω.9th resistance R9 and the tenth resistance R10 triode are penetrated
Pole negative feedback resistor, also plays the effect of current-limiting protection.
In present embodiment, when U1 output voltage (being also sinusoidal signal) is more than 5.7V, sinusoidal wave in
Now positive half cycle, Q1 positively biased turns on, and the reverse-biased cut-off of Q2, along with magnitude of voltage is gradually increased, Q1 base current is therewith
Increasing, emitter current is also gradually increased, and exports forward current；When U1 output voltage is less than 5.7V, sinusoidal
Ripple negative half period, Q2 positively biased turns on, the reverse-biased cut-off of Q1, just contrary more than during 5.7V with U1 output voltage,
Thus increase signal code driving force.
Rotation becomes the output of the input connection rotary transformer of output signal processing circuit, and its output connects
Rotation becomes the analog input end of decoding chip.Rotation becomes the output of decoding chip and connects encoder signal processing circuit.
Rotation becomes output signal processing circuit and obtains the motor rotor position information of rotary transformer monitoring and at it
Being transported to rotation after reason and become decoding chip, rotation becomes decoding chip and is decoded the motor rotor position information obtained
After be sent to encoder signal processing circuit, encoder signal processing circuit will rotation become decoding chip decoding letter
Breath is converted into circuit for controlling motor discernible coding information and is sent to circuit for controlling motor.Rotation becomes decoding core
Sheet also includes a reference signal end, and it connects rotation and becomes output signal processing circuit, for becoming output letter to rotation
Number process circuit conveying reference signal REFOUT, rotation become output signal processing circuit according to reference signal to rotation
The output signal of transformer is biased.
In present embodiment, rotary transformer is made up of stator and rotor two parts, and stator has three groups of windings,
It is sine input Exciting Windings for Transverse Differential Protection, sinusoidal output winding and cosine output winding respectively, rotor has one group independently
Winding to export two-phase orthogonal waveforms.Motor rotor position information simulation signal is passed through 4 by rotary transformer
Group holding wire input rotation varying signal processes circuit, and 4 groups of holding wires are divided into two pairs of cosine and sine signals, are first respectively
Sinusoidal signal SIN and the first cosine signal COS, the second sinusoidal signal SINLO and the second cosine signal COSLO.
Shown in Fig. 5, apply signals of rotating transformer hardware decoding electricity in EPS for what present embodiment provided
Rotary transformer input signal EXC_OUT/NEXC_OUT and sinusoidal signal SIN/SINLO of output and defeated in road
The cosine signal COS/COSLO schematic diagram gone out.
In present embodiment, rotary transformer output cosine and sine signal becomes output signal processing circuit pair through overwinding
Amplitude decays, and becomes decoding chip cosine and sine signal center voltage by reference signal REFOUT and rotation and carries out
Send into rotation change decoding chip after coupling to be decoded the rotary transformer anglec of rotation and speed obtaining encoder letter
Number, then export the motor rotor position coding that EPS controller is compatible by encoder signal processing circuit after being processed
Device signal.
With reference to Fig. 3, in present embodiment, rotation becomes output signal processing circuit and includes: the of composition filter circuit
Two electric capacity C1A, the 3rd electric capacity C2A and the 4th electric capacity C3A, composition bleeder circuit the 11st resistance R1A and
12nd resistance R2A, first input end, the second input, the first output, the second output and reference letter
Number input.First input end accesses the first sinusoidal signal SIN and the first cosine letter of rotary transformer output
Number COS, the second input accesses the second sinusoidal signal SINLO and second cosine signal of rotary transformer output
COSLO.First input end and the second input pass through the 4th electric capacity C3A and the 3rd electric capacity C2A ground connection respectively,
First input end connects the first output, and the second input connects the second output, the first output and second
Output is connected by the second electric capacity C1A, and reference signal input connects second by the 11st resistance R1A
Output, and connect the first output by the 12nd resistance 2A.
It is that rotary transformer secondary output signal is carried out the range of decrease that rotation becomes the Main Function of output signal processing circuit
And bias treatment, divider resistance R1A, R2A, R3A, R4A resistance size is by revolving change device digital quantizer input
The amplitude of SIN, SINLO and the COS of signal, COSLO determines, the effect of electric capacity C1A is to filter rotation transformation
Device secondary output signal SIN_OUT, SINLO_OUT and COS_OUT, the DM EMI between COSLO_OUT
I.e. filtering difference interference, the effect of electric capacity C2A, C3A is to filter rotary transformer secondary output signal
SIN_OUT, SINLO_OUT and COS_OUT, the common mode disturbances between COSLO_OUT.REFOUT signal is rotation
Become device digital quantizer output reference signal, this signal is connected with bleeder circuit central point, can will enter
Rotation becomes the signal of device digital quantizer and is biased, and bias voltage size is equal to REFOUT voltage.
With reference to Fig. 4, encoder signal processing circuit is by the anti-phase Schmidt trigger of hexadecimal and filter circuit group
Becoming, its chip used is 74LVC14AD.Shown in Fig. 6, become decoding for encoder signal processing circuit from rotation
Three road signal A, B, Z schematic diagrames that chip obtains.In present embodiment, motor and control circuit master control core
Sheet is STM32F103ZET6 or homologous series.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
Being limited to this, any those familiar with the art is in the technical scope that the invention discloses, according to this
The technical scheme of invention and inventive concept thereof in addition equivalent or change, all should contain the protection in the present invention
Within the scope of.
Claims (9)
1. apply signals of rotating transformer hardware decoding circuit in EPS for one kind, it is characterised in that bag
Include: rotation becomes decoding chip, rotation change pumping signal pushes away and exerts oneself amplifying circuit, rotary transformer, rotation change output signal
Process circuit and encoder signal processing circuit；
Rotation becomes pumping signal and pushes away the excitation end of the input connection rotation change decoding chip exerting oneself amplifying circuit, its output
End connects the input of rotary transformer；Rotation change pumping signal pushes away exerts oneself amplifying circuit acquisition rotation decoding chip
Pumping signal, and flow to rotary transformer after being amplified and enter duty pair with excitation rotary transformer
Motor rotor position detects；
Rotation becomes the output of the input connection rotary transformer of output signal processing circuit, and its output connects
Rotation becomes the analog input end of decoding chip, and rotation becomes the output of decoding chip and connects encoder signal processing circuit；
Rotation becomes output signal processing circuit and obtains the motor rotor position information of rotary transformer detection and at it
Being transported to rotation after reason and become decoding chip, rotation becomes decoding chip and is decoded the motor rotor position information obtained
After be sent to encoder signal processing circuit, encoder signal processing circuit will rotation become decoding chip decoding letter
Breath is converted into circuit for controlling motor discernible coding information and is sent to circuit for controlling motor.
Apply signals of rotating transformer hardware decoding circuit in EPS the most as claimed in claim 1,
It is characterized in that, rotation becomes decoding chip and becomes decoding chip into AD2S1210 chip or isonomic rotation.
Apply signals of rotating transformer hardware decoding circuit in EPS the most as claimed in claim 1,
It is characterized in that, rotation varying signal pushes away exerts oneself amplifying circuit and is one and uses operational amplifier and discrete complementary emitter
The composite amplifier of follower output stage.
Apply signals of rotating transformer hardware decoding circuit in EPS the most as claimed in claim 3,
It is characterized in that, rotation varying signal push away exert oneself amplifying circuit include operational amplifier (U1), the first diode (D1),
Second diode (D2), the first triode (Q1) and the second triode (Q2), wherein, the one or three pole
Pipe (Q1) is N-type pipe, and the second triode (Q2) is p-type pipe；The negative-feedback of operational amplifier (U1)
Hold to push away as rotation varying signal and exert oneself input amplifier connection rotation change decoding chip excitation end and connect rotation varying signal
Pushing away and exert oneself amplification circuit output end, its positive feedback terminates into the first voltage (VDD1), and its power input connects
First supply voltage (VDD2), its output connects the first diode (D1) negative pole and the two or two pole respectively
Pipe (D2) positive pole；First diode (D1) positive pole connects control voltage respectively by the 6th resistance (R6)
(VDD3) and the first triode (Q1) base stage, the first triode (Q1) colelctor electrode connects the second power supply electricity
Pressure (VDD4), its emitter stage is pushed away by the 9th resistance (R9) connection rotation varying signal exerts oneself amplification circuit output end；
Second diode (D2) negative pole connects the second triode (Q2) base stage, and is connect by the 8th resistance (R8)
Ground；Second triode (Q2) grounded collector, its emitter stage connects rotation by the tenth resistance (R10) and becomes letter
Number push away and to exert oneself amplification circuit output end.
Apply signals of rotating transformer hardware decoding circuit in EPS the most as claimed in claim 4,
It is characterized in that, operational amplifier (U1) by the 3rd resistance (R3) connect the first voltage (VDD1) and
By the 4th resistance (R4) ground connection, control voltage (VDD3) and connect the respectively by the 5th resistance (R5)
Six resistance (R6) and the first triode (Q1) base stage, the second diode (D2) negative pole passes through the 7th resistance
(R7) the 8th resistance (R8) and the second triode (Q2) base stage are connected respectively；Wherein, the 5th resistance (R5)
Equal with the 8th resistance (R8) resistance, the 6th resistance (R6) is equal with the 7th resistance (R7) resistance, the
Nine resistance (R9) are equal with the tenth resistance (R10) resistance.
Apply signals of rotating transformer hardware decoding circuit in EPS the most as claimed in claim 5,
It is characterized in that, operational amplifier (U1) connects rotation by the first resistance (R1) and becomes decoding chip excitation end,
And connect rotation varying signal by the second resistance (R2) and push away and exert oneself amplification circuit output end, on the second resistance (R2)
It is parallel with the first electric capacity (C1).
Apply signals of rotating transformer hardware decoding circuit in EPS the most as claimed in claim 1,
It is characterized in that, rotation becomes decoding chip and includes a reference signal end, and it connects rotation change output signal and processes electricity
Road, for becoming output signal processing circuit conveying reference signal (REFOUT) to rotation, rotation becomes at output signal
The output signal of rotary transformer is biased by reason circuit according to reference signal.
Apply signals of rotating transformer hardware decoding circuit in EPS the most as claimed in claim 7,
It is characterized in that, rotation become output signal processing circuit include the second electric capacity (C1A), the 3rd electric capacity (C2A),
4th electric capacity (C3A), the 11st resistance (R1A), the 12nd resistance (R2A), first input end,
Two inputs, the first output, the second output and reference signal input；First input end accesses and rotates
First sinusoidal signal (SIN) of transformer output and the first cosine signal (COS), the second input accesses
Second sinusoidal signal (SINLO) of rotary transformer output and the second cosine signal (COSLO)；First is defeated
Entering end and the second input passes through the 4th electric capacity (C3A) and the 3rd electric capacity (C2A) ground connection respectively, first is defeated
Entering end and connect the first output, the second input connects the second output, the first output and the second output
Being connected by the second electric capacity (C1A), reference signal input connects second by the 11st resistance (R1A)
Output, and connect the first output by the 12nd resistance (R2A).
Apply signals of rotating transformer hardware decoding circuit in EPS the most as claimed in claim 1,
It is characterized in that, encoder signal processing circuit is by the anti-phase Schmidt trigger of hexadecimal and filter circuit group
Become., its chip used is 74LVC14AD.
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| CN108106531A (en) * | 2018-01-16 | 2018-06-01 | 上海崇林汽车电子有限公司 | It is a kind of to revolve the excitation for becoming sensor and rotation varying signal amplifier circuit device |
| CN108429494A (en) * | 2018-04-28 | 2018-08-21 | 深圳市伟创电气有限公司 | A kind of rotation becomes the processing circuit and processing unit of exciter response signal |
| CN109117563A (en) * | 2018-08-21 | 2019-01-01 | 合肥巨动力系统有限公司 | A kind of rotation power transformation road and its fault detection method |
| CN112671275A (en) * | 2020-12-04 | 2021-04-16 | 上海航天控制技术研究所 | High-precision rotary transformer control decoding system and method |
| CN112833922A (en) * | 2020-12-31 | 2021-05-25 | 泉州杰嘉智能科技有限公司 | Multifunctional electromagnetic rotary encoder and detection circuit |
| CN114465544A (en) * | 2022-03-30 | 2022-05-10 | 重庆长安新能源汽车科技有限公司 | Rotary transformer decoding device and automobile |
| CN116754002A (en) * | 2023-08-16 | 2023-09-15 | 深蓝(天津)智能制造有限责任公司 | Measurement error fitting method and system for rotary transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7005812B2 (en) * | 2001-07-23 | 2006-02-28 | Lawrence Hardy Mitchell | Commutation converter for a brushless servo motor |
| CN101719752A (en) * | 2009-11-26 | 2010-06-02 | 西北工业大学 | Method and device for detecting position of rotor of brushless motor |
| CN102291067A (en) * | 2011-08-19 | 2011-12-21 | 联合汽车电子有限公司 | Motor position detecting circuit utilizing isolating type rotating transformer |
| CN203587123U (en) * | 2013-11-30 | 2014-05-07 | 湖北三江航天红峰控制有限公司 | Rotary transformer signal conditioning circuit based on rotary transformer digital converter |
| CN204271968U (en) * | 2014-11-28 | 2015-04-15 | 湖北三江航天红峰控制有限公司 | A kind of resolver digital decoding control circuit based on DSP |
-
2016
- 2016-04-08 CN CN201610220150.2A patent/CN105897078A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7005812B2 (en) * | 2001-07-23 | 2006-02-28 | Lawrence Hardy Mitchell | Commutation converter for a brushless servo motor |
| CN101719752A (en) * | 2009-11-26 | 2010-06-02 | 西北工业大学 | Method and device for detecting position of rotor of brushless motor |
| CN102291067A (en) * | 2011-08-19 | 2011-12-21 | 联合汽车电子有限公司 | Motor position detecting circuit utilizing isolating type rotating transformer |
| CN203587123U (en) * | 2013-11-30 | 2014-05-07 | 湖北三江航天红峰控制有限公司 | Rotary transformer signal conditioning circuit based on rotary transformer digital converter |
| CN204271968U (en) * | 2014-11-28 | 2015-04-15 | 湖北三江航天红峰控制有限公司 | A kind of resolver digital decoding control circuit based on DSP |
Non-Patent Citations (3)
| Title |
|---|
| 吴红星: "《开关磁阻电机系统理论与控制技术》", 31 August 2010, 北京：中国电力出版社 * |
| 李岩等: "《一种新型磁阻式正余弦旋转变压器解码方法》", 《电气工程学报》 * |
| 袁登科: "《永磁同步电动机变频调速系统及其控制》", 30 June 2015, 北京：机械工业出版社 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106208831A (en) * | 2016-08-30 | 2016-12-07 | 苏州新代数控设备有限公司 | String ripple conversion withdrawer |
| CN106208831B (en) * | 2016-08-30 | 2019-03-15 | 苏州新代数控设备有限公司 | String wave converts recover |
| CN106406180B (en) * | 2016-11-01 | 2019-02-15 | 南京熊猫电子股份有限公司 | A kind of parser circuitry and analytic method of automatic matching rotation transformer parameter |
| CN106406180A (en) * | 2016-11-01 | 2017-02-15 | 南京熊猫电子股份有限公司 | Analysis circuit and analysis method for automatic matching parameter of rotary transformer |
| CN106647639A (en) * | 2016-12-26 | 2017-05-10 | 南京长峰航天电子科技有限公司 | Servo control real time position obtaining method and system based on incremental mode |
| CN108106531A (en) * | 2018-01-16 | 2018-06-01 | 上海崇林汽车电子有限公司 | It is a kind of to revolve the excitation for becoming sensor and rotation varying signal amplifier circuit device |
| CN108429494A (en) * | 2018-04-28 | 2018-08-21 | 深圳市伟创电气有限公司 | A kind of rotation becomes the processing circuit and processing unit of exciter response signal |
| CN109117563A (en) * | 2018-08-21 | 2019-01-01 | 合肥巨动力系统有限公司 | A kind of rotation power transformation road and its fault detection method |
| CN112671275A (en) * | 2020-12-04 | 2021-04-16 | 上海航天控制技术研究所 | High-precision rotary transformer control decoding system and method |
| CN112833922A (en) * | 2020-12-31 | 2021-05-25 | 泉州杰嘉智能科技有限公司 | Multifunctional electromagnetic rotary encoder and detection circuit |
| CN114465544A (en) * | 2022-03-30 | 2022-05-10 | 重庆长安新能源汽车科技有限公司 | Rotary transformer decoding device and automobile |
| CN114465544B (en) * | 2022-03-30 | 2023-08-08 | 深蓝汽车科技有限公司 | Rotary-variable decoding device and automobile |
| CN116754002A (en) * | 2023-08-16 | 2023-09-15 | 深蓝(天津)智能制造有限责任公司 | Measurement error fitting method and system for rotary transformer |
| CN116754002B (en) * | 2023-08-16 | 2023-11-14 | 深蓝(天津)智能制造有限责任公司 | Measurement error fitting method and system for rotary transformer |
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