CN104660120B - A kind of motor zero testing method and device - Google Patents
A kind of motor zero testing method and device Download PDFInfo
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- CN104660120B CN104660120B CN201510066291.9A CN201510066291A CN104660120B CN 104660120 B CN104660120 B CN 104660120B CN 201510066291 A CN201510066291 A CN 201510066291A CN 104660120 B CN104660120 B CN 104660120B
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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
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
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- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The embodiment of the present invention provides a kind of motor zero testing method and device, is related to automobile technical field, can effectively reduce the complexity of controlled motor, improves the precision of the zero-bit of the rotor of detection motor.Motor transmits back-emf signal to oscillograph, and back-emf signal is used for the signal for representing induced electromotive force caused by the rotor rotation of the motor；Electric machine controller transmits Z pulse signals to oscillograph, and Z pulse signals are used for the signal of dead-center position during the rotor rotation for representing the rotary transformer of motor；Processor obtains the duration of the back-emf signal and the duration of the zero point from the back-emf signal to the Z pulse signals from oscillograph；The difference of duration of the processor according to the back-emf signal and the zero point from the back-emf signal to the duration of the Z pulse signals obtains the zero-bit of the rotor of the motor.Motor zero testing method and device is used for motor zero testing.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of motor zero testing method and device.
Background technology
As the improvement of people's living standards, the advantages that pure electric automobile is because of its no pollution, zero-emission is increasingly by people
Like, and with the continuous development of scientific technology, pure electric automobile is also quickly grown in recent years.Pure electric automobile moves
Power unit includes battery, electric machine controller and motor etc., and the motor can include rotor, stator and rotary transformer.For example, forever
Magnetic-synchro motor (Permanent Magnet Synchronous Motor, PMSM) includes rotary transformer, and has system
The advantages that efficiency high and big power density, it is widely used in pure electric automobile.When the accurate controlled motor of electric machine controller,
The position of the rotor of the position acquisition motor by the rotor of rotary transformer is needed, due to the mounting process of motor, generally rotation
Deviation between the dead-center position of the dead-center position of the rotor of transformation depressor and the rotor of motor be present, the deviation turns for motor
The zero-bit of son.Therefore, need to detect the zero-bit of the rotor of motor before motor work.
In the prior art, DC location method can be directly used, i.e., to being passed through suitable size in motor stator three-phase windings
Direct current, wherein A phase windings for input, B, C phase winding output, by means of rotor permanent magnet magnetic pole make motor rest on A phases around
The dead-center position of group position, i.e. motor, then according to the rotor with the rotary transformer of the rotor coaxial of motor, read rotation and become
The position of the rotor of depressor is exactly the zero-bit of the rotor of motor；Turning for the positioning method detection motor of current closed-loop can also be used
The zero-bit of son.
But the zero-bit method for detecting the rotor of motor in the prior art is needed by inverter, external high pressure power supply electricity
Source and specific software program controlled motor, and friction on the armature spindle of motor be present, therefore, the complexity of controlled motor compared with
Height, the precision for detecting the zero-bit of the rotor of motor are relatively low.
The content of the invention
Embodiments of the invention provide a kind of motor zero testing method and device, can effectively reduce answering for controlled motor
Miscellaneous degree, improve the precision of the zero-bit of the rotor of detection motor.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
The first aspect of the embodiment of the present invention, there is provided a kind of motor zero testing method, including：
Motor transmits back-emf signal to oscillograph, and the back-emf signal is used for the rotor rotation for representing the motor
The signal of induced electromotive force caused by turning；
Electric machine controller transmits Z pulse signals to the oscillograph, and the Z pulse signals are used for the rotation for representing the motor
The signal of dead-center position, the motor include the rotor of rotary transformer when changing the rotor rotation of depressor；
Processor from the oscillograph obtain the duration of the back-emf signal with from the zero of the back-emf signal
Duration of the point to the Z pulse signals；
Duration of the processor according to the back-emf signal and the zero point from the back-emf signal to the Z
The difference of the duration of pulse signal obtains the zero-bit of the rotor of the motor.
With reference in a first aspect, in the first can realize mode, the motor transmits back-emf signal bag to oscillograph
Include：
Dynamometer machine drives motor rotation to produce counter electromotive force, and the motor is by any two phase line in triple line to institute
State oscillograph and transmit the back-emf signal.
Mode can be realized with reference to the first, in second can be achieved mode, in the electric machine controller to the oscillography
Before device transmission Z pulse signals, methods described also includes：
The electric machine controller transmits excitation signal to the rotary transformer of the motor；
The rotary transformer of the motor produces feedback signal according to the excitation signal；
The rotary transformer of the motor transmits the feedback signal by signal wire to the electric machine controller, described anti-
Feedback signal includes sinusoidal feedback signal and cosine feedback signal.
Mode can be achieved with reference to second, in the third can realize mode, the electric machine controller is to the oscillograph
Transmission Z pulse signals include：
The electric machine controller produces the Z pulses according to rotary transformer decoding circuit to feedback signal decoding to be believed
Number, the electric machine controller includes the rotary transformer decoding circuit；
The electric machine controller transmits the Z by the NM pins of the rotary transformer decoding circuit to the oscillograph
Pulse signal.
With reference in a first aspect, first can realize any one in mode to the third, in the 4th kind of achievable mode, institute
State duration of the processor according to the back-emf signal and the zero point from the back-emf signal to the Z pulse signals
The zero-bit that the difference of duration obtains the rotor of the motor includes：
Zero point according to the duration of the back-emf signal and from the back-emf signal is to the Z pulse signals
Duration, the zero-bit of the rotor of the motor is obtained by the first formula,
First formula is：
Wherein, the θ represents the zero-bit of the rotor of motor, and the t represents the zero point from the back-emf signal
To the duration of the Z pulse signals, the T represents the duration of the back-emf signal, and 2 π represents the thing of sinusoidal cycles
Angle is managed, it is describedRepresent the phase voltage signal of the rotor of the motor relative to the line voltage signal of the rotor of the motor
Delay.
Second aspect, there is provided a kind of motor zero detector, including：
Motor, for transmitting back-emf signal to oscillograph, the back-emf signal is used to represent the motor
The signal of induced electromotive force caused by rotor rotation；
Electric machine controller, for transmitting Z pulse signals to the oscillograph, the Z pulse signals are used to represent the electricity
The signal of dead-center position, the motor include the rotor of rotary transformer during the rotor rotation of the rotary transformer of machine；
Processor, for obtained from the oscillograph duration of the back-emf signal with from the back-emf signal
Zero point to the Z pulse signals duration；
The processor is additionally operable to the duration according to the back-emf signal and the zero point from the back-emf signal
To the zero-bit of the rotor of the difference acquisition motor of the duration of the Z pulse signals.
With reference to second aspect, in the first can realize mode, the motor is specifically used for：
Dynamometer machine drives motor rotation to produce counter electromotive force, and the motor is by any two phase line in triple line to institute
State oscillograph and transmit the back-emf signal.
Mode can be realized with reference to the first, in second can be achieved mode,
The electric machine controller is additionally operable to：Excitation signal is transmitted to the rotary transformer of the motor；
The rotary transformer of the motor is used for：Feedback signal is produced according to the excitation signal；
The rotary transformer of the motor is additionally operable to：The feedback letter is transmitted to the electric machine controller by signal wire
Number, the feedback signal includes sinusoidal feedback signal and cosine feedback signal.
Mode can be achieved with reference to second, in the third can realize mode,
The electric machine controller is additionally operable to：Described in being produced according to rotary transformer decoding circuit to feedback signal decoding
Z pulse signals, the electric machine controller include the rotary transformer decoding circuit；
The electric machine controller is specifically used for：By the NM pins of the rotary transformer decoding circuit to the oscillograph
Transmit the Z pulse signals.
With reference to second aspect, first can realize any one in mode to the third, in the 4th kind of achievable mode, institute
Processor is stated to be specifically used for：
Zero point according to the duration of the back-emf signal and from the back-emf signal is to the Z pulse signals
Duration, the zero-bit of the rotor of the motor is obtained by the first formula,
First formula is：
Wherein, the θ represents the zero-bit of the rotor of motor, and the t represents the zero point from the back-emf signal
To the duration of the Z pulse signals, the T represents the duration of the back-emf signal, and 2 π represents the thing of sinusoidal cycles
Angle is managed, it is describedRepresent the phase voltage signal of the rotor of the motor relative to the line voltage signal of the rotor of the motor
Delay.
Motor zero testing method and device provided in an embodiment of the present invention.First, motor transmits anti-electronic to oscillograph
Gesture signal, the back-emf signal are used for the signal for representing induced electromotive force caused by the rotor rotation of the motor, then, electricity
Machine controller transmits Z pulse signals to the oscillograph, and the rotary transformer that the Z pulse signals are used to represent the motor turns
The signal of dead-center position during son rotation, processor from the oscillograph obtain the duration of the back-emf signal with from described anti-
Duration of the zero point of electromotive force signal to the Z pulse signals；The processor according to the duration of the back-emf signal with from
The zero point of the back-emf signal obtains the zero-bit of the rotor of the motor to the difference of the duration of the Z pulse signals.Relatively
In prior art, on the premise of additional circuit and software program is not increased, passed through using motor, electric machine controller and oscillograph
The zero-bit of the rotor of the concept detection motor of the zero-bit of the rotor of motor, so as to be effectively reduced the complexity of controlled motor
Degree, improve the precision of the zero-bit of the rotor of detection motor.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 provides a kind of motor zero testing method flow diagram for the embodiment of the present invention；
Fig. 2 provides another motor zero testing method flow diagram for the embodiment of the present invention；
Fig. 3 provides a kind of back-emf signal and Z pulse signal waveform schematic diagrames for the embodiment of the present invention；
Fig. 4 provides a kind of motor zero detector structural representation for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of motor zero testing method, as shown in figure 1, including：
Step 101, motor transmit back-emf signal to oscillograph.
The back-emf signal is used for the signal for representing induced electromotive force caused by the rotor rotation of the motor.
Step 102, electric machine controller transmit Z pulse signals to the oscillograph.
The Z pulse signals are used for the signal of dead-center position during the rotor rotation for representing the rotary transformer of the motor,
The motor includes the rotor of rotary transformer.
Step 103, processor from the oscillograph obtain the duration of the back-emf signal with from the counter electromotive force
Duration of the zero point of signal to the Z pulse signals.
Step 104, the processor according to the duration of the back-emf signal with from the zero of the back-emf signal
The difference of point to the duration of the Z pulse signals obtains the zero-bit of the rotor of the motor.
So, first, motor transmits back-emf signal to oscillograph, and the back-emf signal is used to represent described
The signal of induced electromotive force caused by the rotor rotation of motor, then, electric machine controller transmits Z pulses letter to the oscillograph
Number, the Z pulse signals be used for represent the motor rotary transformer rotor rotation when dead-center position signal, processor from
The oscillograph obtains the duration of the back-emf signal and the zero point from the back-emf signal to the Z pulse signals
Duration；Duration of the processor according to the back-emf signal and the zero point from the back-emf signal to the Z arteries and veins
Rush the zero-bit of the rotor of the difference acquisition motor of the duration of signal.Relative to prior art, do not increasing additional circuit and soft
On the premise of part program, the concept detection motor of the zero-bit for the rotor for passing through motor using motor, electric machine controller and oscillograph
Rotor zero-bit, so as to be effectively reduced the complexity of controlled motor, improve the essence of the zero-bit of the rotor of detection motor
Degree.
Embodiment 2
The embodiment of the present invention provides a kind of motor zero testing method, as shown in Fig. 2 methods described includes：
Step 201, the rotation of dynamometer machine drive motor produce counter electromotive force.
AC power is powered by the frequency conversion of frequency converter to dynamometer machine, and dynamometer machine rotation drive motor rotation, motor is at the uniform velocity
Rotation produces counter electromotive force.The AC power can be the three phase mains of 380 volts (V).
Step 202, motor transmit back-emf signal by any two phase line in triple line to oscillograph.
Because motor is not powered up, simply dynamometer machine rotation drive motor rotation produces induced electromotive force, so in order to
Avoid back-emf signal (relevant with the rating of electric machine) from being transferred on electric machine controller, cause the damage of electric machine controller device,
The triple line of motor simply transmits back-emf signal without being connected with the triple line of electric machine controller to oscillograph.It is described anti-
Electromotive force signal is used for the signal for representing induced electromotive force caused by the rotor rotation of the motor, i.e., described induced electromotive force
Signal is line voltage signal.For example, when triple line includes A phase lines, B phase lines and C phase lines, motor can pass through A phase lines and B phase lines
The line voltage signal of the motor is transmitted to oscillograph, or transmits the line voltage of the motor to oscillograph by A phase lines and C phase lines
Signal, or the line voltage signal of the motor is transmitted by B phase lines and C phase lines to oscillograph.It should be noted that in order to ensure
Safety and prevent the triple line short circuit of motor from not used and exposed phase line, it is necessary to be wound with electro-insulating rubber band in three phase lines,
For example, when motor transmits the line voltage signal of the motor to oscillograph by A phase lines and B phase lines, C is wound with electro-insulating rubber band
Phase line.
Step 203, electric machine controller transmit excitation signal to the rotary transformer of motor.
Step 204, the rotary transformer of motor produce feedback signal according to the excitation signal.
The feedback signal includes sinusoidal feedback signal and cosine feedback signal.
Step 205, the rotary transformer of motor transmit the feedback signal by signal wire to electric machine controller.
Step 206, electric machine controller decode according to rotary transformer decoding circuit to the feedback signal produces Z pulses letter
Number.
Dc source is powered to electric machine controller, and the dc source can be the low-tension supply of 12 volts (V).The Z pulses
Signal is used for the signal of dead-center position during the rotor rotation for representing the rotary transformer of the motor.
Step 207, electric machine controller transmit the Z pulses by the NM pins of rotary transformer decoding circuit to oscillograph
Signal.
The dead-center position of the rotor of rotary transformer, feedback are represented in the NM (North Marker) that rotation becomes in decoding circuit
Signal once just produces a Z pulse signal by dead-center position.
Step 208, processor from oscillograph obtain the duration of the back-emf signal with from the back-emf signal
Zero point to the Z pulse signals duration.
The duration of step 209, processor according to the back-emf signal with from the back-emf signal zero point to
The difference of the duration of the Z pulse signals obtains the zero-bit of the rotor of the motor.
Example, as shown in Figure 3, it is assumed that motor is permagnetic synchronous motor, produces the back-emf signal a shown in Fig. 3,
Z pulse signals b.Zero point according to the duration of the back-emf signal and from the back-emf signal is believed to the Z pulses
Number duration, the zero-bit of the rotor of the motor is obtained by the first formula,
First formula is：
Wherein, the θ represents the zero-bit of the rotor of motor, and the t represents the zero point from the back-emf signal
To the duration of the Z pulse signals, the T represents the duration of the back-emf signal, and 2 π represents the thing of sinusoidal cycles
Angle is managed, it is describedRepresent the phase voltage signal of the rotor of the motor relative to the line voltage signal of the rotor of the motor
Delay.
Specifically, rotary transformer is made up of stator and rotor, when installing rotary transformer, by determining for rotary transformer
Son and stator and rotor of the rotor respectively with motor are installed together.When motor rotates, the rotor and motor of rotary transformer
Rotor synchronous rotary.The dead-center position of the rotor of rotary transformer can be obtained by rotary transformer decoding circuit, and electric
The dead-center position of the rotor of machine can be obtained by the back-emf signal of motor.Caused Z pulses in rotary transformer decoding circuit
The as dead-center position of the rotor of rotary transformer, and the starting point of the sinusoidal waveform of the back-emf signal of motor is turning for motor
The dead-center position of son.
In the case where motor does not apply outside three-phase voltage, the smoothly evenly rotating shaft of rotary permanent-magnet synchronous motor, just
Sinusoidal induced electromotive force can be generated in the stator side of permagnetic synchronous motor, its frequency and amplitude and the rotor speed of rotation are into just
Than.Because the stator winding of permagnetic synchronous motor is star-like connection, its neutral point can not directly pass through oscillograph in motor internal
Permagnetic synchronous motor phase voltage is measured, phase voltage can be obtained indirectly by testing permagnetic synchronous motor line voltage, due to line voltage
The angle of phase voltage is in advanceTherefore subtractAngle.
It should be noted that the rotating shaft of other kinds of motor smoothly can also be evenly rotated, in the other types
The stator side of motor generate square wave induced electromotive force etc..
Motor zero testing method and device of the present invention, first, motor transmit back-emf signal to oscillograph,
The back-emf signal is used for the signal for representing induced electromotive force caused by the rotor rotation of the motor, then, motor control
Device transmits Z pulse signals to the oscillograph, and the Z pulse signals are used for the rotor rotation for representing the rotary transformer of the motor
When dead-center position signal, processor from the oscillograph obtain the duration of the back-emf signal with from the counter electromotive force
Duration of the zero point of signal to the Z pulse signals；The processor according to the duration of the back-emf signal with from described anti-
The zero point of electromotive force signal obtains the zero-bit of the rotor of the motor to the difference of the duration of the Z pulse signals.Relative to existing
Technology, on the premise of additional circuit and software program is not increased, pass through motor using motor, electric machine controller and oscillograph
The zero-bit of the rotor of the concept detection motor of the zero-bit of rotor, so as to be effectively reduced the complexity of controlled motor, improve
Detect the precision of the zero-bit of the rotor of motor.
Embodiment 3
The embodiment of the present invention provides a kind of motor zero detector, as shown in figure 4, including：
Dc source 41, electric machine controller 42, motor 43, dynamometer machine 44, frequency converter 45, AC power 46 and oscillograph
47, electric machine controller 42 includes rotary transformer decoding circuit 421, and motor 43 includes rotary transformer 431.
Wherein, dc source 41 connects electric machine controller 42 by the positive negative wire of dc source, and electric machine controller 42 is distinguished
It is connected with motor 43 and oscillograph 47, motor 43 is connected with electric machine controller 42 and oscillograph 47 respectively, and dynamometer machine 44 is arranged at
In dynamo dynamometer machine stand (not shown), motor 43 is connected and fixed on dynamo dynamometer machine stand by bearing and dynamometer machine 44
On, dynamometer machine 44 connects frequency converter 45, and frequency converter 45 connects AC power 46.
Motor, for transmitting back-emf signal to oscillograph, the back-emf signal is used to represent the motor
The signal of induced electromotive force caused by rotor rotation.The motor is specifically used for：Dynamometer machine drives the motor rotation to produce anti-electricity
Kinetic potential, the motor transmit the back-emf signal by any two phase line in triple line to the oscillograph.
Electric machine controller is used for：Excitation signal is transmitted to the rotary transformer of the motor.
The rotary transformer of motor is used for：Feedback signal is produced according to the excitation signal；By signal wire to the electricity
Machine controller transmits the feedback signal, and the feedback signal includes sinusoidal feedback signal and cosine feedback signal.
Electric machine controller is additionally operable to：The Z arteries and veins is produced to feedback signal decoding according to rotary transformer decoding circuit
Signal is rushed, the electric machine controller includes the rotary transformer decoding circuit；Pass through the rotary transformer decoding circuit
NM pins transmit the Z pulse signals to the oscillograph, and the Z pulse signals are used for the rotary transformer for representing the motor
Rotor rotation when dead-center position signal, the motor includes the rotor of rotary transformer.
Processor, for obtained from the oscillograph duration of the back-emf signal with from the back-emf signal
Zero point to the Z pulse signals duration.
The processor is additionally operable to the duration according to the back-emf signal and the zero point from the back-emf signal
To the zero-bit of the rotor of the difference acquisition motor of the duration of the Z pulse signals.
The processor is specifically used for：
Zero point according to the duration of the back-emf signal and from the back-emf signal is to the Z pulse signals
Duration, the zero-bit of the rotor of the motor is obtained by the first formula,
First formula is：
Wherein, the θ represents the zero-bit of the rotor of motor, and the t represents the zero point from the back-emf signal
To the duration of the Z pulse signals, the T represents the duration of the back-emf signal, and 2 π represents the thing of sinusoidal cycles
Angle is managed, it is describedRepresent the phase voltage signal of the rotor of the motor relative to the line voltage signal of the rotor of the motor
Delay, the signal of the induced electromotive force is line voltage signal.
It should be noted that frequency converter is used to transmit the voltage of AC power to dynamometer machine after frequency conversion, it is measurement of power
Machine is powered.The specific descriptions of part functional module may be referred to method in motor zero detector provided in an embodiment of the present invention
Corresponding content in embodiment, the present embodiment are no longer described in detail here.
Motor zero testing method and device of the present invention, first, motor transmit back-emf signal to oscillograph,
The back-emf signal is used for the signal for representing induced electromotive force caused by the rotor rotation of the motor, then, motor control
Device transmits Z pulse signals to the oscillograph, and the Z pulse signals are used for the rotor rotation for representing the rotary transformer of the motor
When dead-center position signal, processor from the oscillograph obtain the duration of the back-emf signal with from the counter electromotive force
Duration of the zero point of signal to the Z pulse signals；The processor according to the duration of the back-emf signal with from described anti-
The zero point of electromotive force signal obtains the zero-bit of the rotor of the motor to the difference of the duration of the Z pulse signals.Relative to existing
Technology, on the premise of additional circuit and software program is not increased, pass through motor using motor, electric machine controller and oscillograph
The zero-bit of the rotor of the concept detection motor of the zero-bit of rotor, so as to be effectively reduced the complexity of controlled motor, improve
Detect the precision of the zero-bit of the rotor of motor.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenient and succinct, can as needed will be upper only with the division progress of above-mentioned each functional module for example, in practical application
State function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete
All or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, before may be referred to
The corresponding process in embodiment of the method is stated, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the module or
The division of unit, only a kind of division of logic function, can there are other dividing mode, such as multiple units when actually realizing
Or component can combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, institute
Display or the mutual coupling discussed or direct-coupling or communication connection can be by some interfaces, device or unit
INDIRECT COUPLING or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
It is each that equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the present invention
The all or part of step of embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage
(ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD
Etc. it is various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
- A kind of 1. motor zero testing method, it is characterised in that including：Motor transmits back-emf signal to oscillograph, and the back-emf signal is used for the rotor rotation production for representing the motor The signal of raw induced electromotive force；Electric machine controller transmits Z pulse signals to the oscillograph, and the Z pulse signals are used to represent that the rotation of the motor to become The signal of dead-center position, the motor include the rotor of rotary transformer during the rotor rotation of depressor；Processor from the oscillograph obtain the duration of the back-emf signal and the zero point from the back-emf signal to The duration of the Z pulse signals；Duration of the processor according to the back-emf signal and the zero point from the back-emf signal to the Z pulses The difference of the duration of signal obtains the zero-bit of the rotor of the motor；Duration of the processor according to the back-emf signal and the zero point from the back-emf signal to the Z pulses The zero-bit that the difference of the duration of signal obtains the rotor of the motor includes：Zero point according to the duration of the back-emf signal and from the back-emf signal to the Z pulse signals when It is long, the zero-bit of the rotor of the motor is obtained by the first formula,First formula is：<mrow> <mi>&theta;</mi> <mo>=</mo> <mfrac> <mi>t</mi> <mi>T</mi> </mfrac> <mo>&times;</mo> <mn>2</mn> <mi>&pi;</mi> <mo>-</mo> <mfrac> <mi>&pi;</mi> <mn>6</mn> </mfrac> </mrow>Wherein, the θ represents the zero-bit of the rotor of motor, and the t represents described from the zero point of the back-emf signal to institute The duration of Z pulse signals is stated, the T represents the duration of the back-emf signal, and 2 π represents the physics angle of sinusoidal cycles Degree, it is describedRepresent phase voltage signal the prolonging relative to the line voltage signal of the rotor of the motor of the rotor of the motor Late, the signal of the induced electromotive force is line voltage signal.
- 2. motor zero testing method according to claim 1, it is characterised in that the motor transmits anti-electricity to oscillograph Electromotive force signal includes：Dynamometer machine drives the motor rotation to produce counter electromotive force, and the motor is shown by any two phase line in triple line to described Ripple device transmits the back-emf signal.
- 3. motor zero testing method according to claim 2, it is characterised in that show in the electric machine controller to described Before ripple device transmission Z pulse signals, methods described also includes：The electric machine controller transmits excitation signal to the rotary transformer of the motor；The rotary transformer of the motor produces feedback signal according to the excitation signal；The rotary transformer of the motor transmits the feedback signal, the feedback letter by signal wire to the electric machine controller Number include sinusoidal feedback signal and cosine feedback signal.
- 4. motor zero testing method according to claim 3, it is characterised in that the electric machine controller is to the oscillography Device transmission Z pulse signals include：The electric machine controller produces the Z pulse signals according to rotary transformer decoding circuit to feedback signal decoding, The electric machine controller includes the rotary transformer decoding circuit；The electric machine controller transmits the Z pulses by the NM pins of the rotary transformer decoding circuit to the oscillograph Signal, the NM pins of the rotary transformer decoding circuit represent the dead-center position of the rotor of the rotary transformer.
- A kind of 5. motor zero detector, it is characterised in that including：Motor, for transmitting back-emf signal to oscillograph, the back-emf signal is used for the rotor for representing the motor The signal of induced electromotive force caused by rotation；Electric machine controller, for transmitting Z pulse signals to the oscillograph, the Z pulse signals are used to represent the motor The signal of dead-center position, the motor include the rotor of rotary transformer during the rotor rotation of rotary transformer；Processor, for obtained from the oscillograph duration of the back-emf signal with from the zero of the back-emf signal Duration of the point to the Z pulse signals；The processor is additionally operable to duration and the zero point from the back-emf signal to institute according to the back-emf signal State the zero-bit of the rotor of the difference acquisition motor of the duration of Z pulse signals；The processor is specifically used for：Zero point according to the duration of the back-emf signal and from the back-emf signal to the Z pulse signals when It is long, the zero-bit of the rotor of the motor is obtained by the first formula,First formula is：<mrow> <mi>&theta;</mi> <mo>=</mo> <mfrac> <mi>t</mi> <mi>T</mi> </mfrac> <mo>&times;</mo> <mn>2</mn> <mi>&pi;</mi> <mo>-</mo> <mfrac> <mi>&pi;</mi> <mn>6</mn> </mfrac> </mrow>Wherein, the θ represents the zero-bit of the rotor of motor, and the t represents described from the zero point of the back-emf signal to institute The duration of Z pulse signals is stated, the T represents the duration of the back-emf signal, and 2 π represents the physics angle of sinusoidal cycles Degree, it is describedRepresent phase voltage signal the prolonging relative to the line voltage signal of the rotor of the motor of the rotor of the motor Late, the signal of the induced electromotive force is line voltage signal.
- 6. motor zero detector according to claim 5, it is characterised in that the motor is specifically used for：Dynamometer machine drives the motor rotation to produce counter electromotive force, and the motor is shown by any two phase line in triple line to described Ripple device transmits the back-emf signal.
- 7. motor zero detector according to claim 6, it is characterised in thatThe electric machine controller is additionally operable to：Excitation signal is transmitted to the rotary transformer of the motor；The rotary transformer of the motor is used for：Feedback signal is produced according to the excitation signal；The rotary transformer of the motor is additionally operable to：The feedback signal, institute are transmitted to the electric machine controller by signal wire Stating feedback signal includes sinusoidal feedback signal and cosine feedback signal.
- 8. motor zero detector according to claim 7, it is characterised in thatThe electric machine controller is additionally operable to：The Z arteries and veins is produced to feedback signal decoding according to rotary transformer decoding circuit Signal is rushed, the electric machine controller includes the rotary transformer decoding circuit；The electric machine controller is specifically used for：Transmitted by the NM pins of the rotary transformer decoding circuit to the oscillograph The Z pulse signals, the NM pins of the rotary transformer decoding circuit represent the zero point position of the rotor of the rotary transformer Put.
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| CN106849777A (en) * | 2017-03-27 | 2017-06-13 | 苏州汇川联合动力系统有限公司 | A kind of permagnetic synchronous motor rotation becomes Zero correction method and system |
| CN108429493A (en) * | 2018-03-21 | 2018-08-21 | 深圳派赛科技有限公司 | A kind of caliberating device and its method of three-phase permanent magnet synchronous motor initial zero position |
| CN108551290B (en) * | 2018-03-30 | 2020-07-14 | 海信家电集团股份有限公司 | PG motor control circuit, method and equipment |
| CN110715598A (en) * | 2019-10-22 | 2020-01-21 | 北京动力机械研究所 | Rotary transformer offset detection system and method of rotary transformer |
| CN115441802B (en) * | 2022-09-06 | 2023-12-01 | 江苏新安电器股份有限公司 | Software method for detecting and starting motor in forward and reverse directions |
| CN115224988B (en) * | 2022-09-20 | 2022-12-20 | 苏州英特模汽车科技有限公司 | Detection method and detection equipment for rotary transformer zero point position, and vehicle |
| CN117379211A (en) * | 2023-10-16 | 2024-01-12 | 广州星际悦动股份有限公司 | Control method and device of oral care equipment and oral care equipment |
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