CN113364382A - Method, device and processor for optimizing rotary position sensor in new energy automobile motor drive and computer readable storage medium thereof - Google Patents

Method, device and processor for optimizing rotary position sensor in new energy automobile motor drive and computer readable storage medium thereof Download PDF

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Publication number
CN113364382A
CN113364382A CN202110693873.5A CN202110693873A CN113364382A CN 113364382 A CN113364382 A CN 113364382A CN 202110693873 A CN202110693873 A CN 202110693873A CN 113364382 A CN113364382 A CN 113364382A
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position sensor
motor
rotary position
new energy
optimizing
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CN202110693873.5A
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Inventor
郑富辉
蒋冬晖
邵勤
朱莉雅
郑周友
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Dongfeng Electronic Technology Co ltd
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Dongfeng Electronic Technology Co ltd
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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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
    • H02P21/18—Estimation of position or speed
    • 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H02P25/024—Synchronous motors controlled by supply frequency
    • H02P25/026—Synchronous motors controlled by supply frequency thereby detecting the rotor position
    • 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
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • 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
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
    • H02P29/028—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault
    • 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
    • H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
    • H02P2203/05—Determination of the rotor position by using two different methods and/or motor models

Abstract

The invention relates to a method for optimizing a rotary position sensor in the motor drive of a new energy automobile, which comprises the steps that a high-speed dynamometer drags a tested motor to rotate according to a current rotating speed instruction, a lower computer executes a current instruction sent by an upper computer to control the output torque of the tested motor, and the output torque is fed back to an upper computer debugging system; controlling the signal of the rotary position sensor to normally operate; if the signal of the rotation position sensor has a fault, the operation control is stopped emergently; and estimating the electrical angle to participate in control. The invention also relates to a device for optimizing the rotary position sensor in the motor drive of the new energy automobile, a processor and a computer readable storage medium thereof. By adopting the method, the device, the processor and the computer readable storage medium for optimizing the rotary position sensor in the motor drive of the new energy automobile, the reliability and the safety of the system are improved by adding a software estimation motor electrical angle module to a traditional permanent magnet synchronous motor control system based on magnetic field positioning vector control and by redundant design of the rotary position sensor.

Description

Method, device and processor for optimizing rotary position sensor in new energy automobile motor drive and computer readable storage medium thereof
Technical Field
The invention relates to the field of new energy permanent magnet synchronous motor control, in particular to a method, a device, a processor and a computer readable storage medium for optimizing a rotary position sensor in new energy automobile motor driving.
Background
With the development of the electric automobile industry, a permanent magnet synchronous motor becomes the most main type of an electric automobile driving motor, and particularly, an embedded salient pole permanent magnet synchronous motor becomes the first choice driving of a new energy automobile due to the advantages of high power density, high efficiency, good output torque performance, wide speed regulation range, small volume, light weight, low noise and the like. At present, a rotary transformer is generally adopted by a salient pole permanent magnet synchronous motor as a position sensor, and a vector control technology based on a rotary coordinate system is adopted for control. The principle of the method is that a controller decodes a signal transmitted by a rotary transformer through a decoding chip, outputs an electrical angle and a speed signal, realizes the direct current control method of the alternating current motor by adopting a Clarke-Park mathematical transformation mode for three phases of the motor, respectively performs PID control on Id and Iq, and then calculates the electrifying duty ratio of a three-phase winding by using a voltage space vector modulation (SVPWM) algorithm to control the motor.
The reliability of an electrical angle signal of a traditional salient pole permanent magnet synchronous motor driving system completely depends on a position sensor, once a rotary transformer fails, the motor driving system judges the fault and can only stop the machine to enter a protection mode. If the whole vehicle is at a train crossing or a traffic bottleneck section, serious harm accidents can be caused.
When the whole vehicle increasingly pursues driving safety and reliability and advocates system function safety requirements, the reliability of a motor controller of a power system is prompted as a core of a new energy vehicle, and the trend and the requirements are inevitable.
A rotary transformer position sensor (hereinafter referred to as a rotary position sensor) of a traditional electric drive system is arranged at the shaft end of a motor, bears the severe environment of high temperature, high voltage, high EMC and high vibration, is far away from a motor controller, has long wire harness transmission distance, and has failure modes such as sensor failure and transmission signal distortion. Once the failure mode occurs, if the motor controller has no redundancy measure, the whole system can only be stopped for protection in an emergency, which brings huge potential safety hazard.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method, a device, a processor and a computer readable storage medium for optimizing a rotary position sensor in the motor drive of a new energy automobile, which have the advantages of good safety, high reliability and reliable protection measures.
In order to achieve the above object, the method, the apparatus, the processor and the computer readable storage medium for optimizing the rotational position sensor in the motor drive of the new energy automobile of the present invention are as follows:
the method for optimizing the rotary position sensor in the motor drive of the new energy automobile is mainly characterized by comprising the following steps of:
(1) the high-speed dynamometer drags the tested motor to rotate according to the current rotating speed instruction, the lower computer executes a current instruction sent by the upper computer, the output torque of the tested motor is controlled, and the output torque is fed back to the upper computer debugging system;
(2) controlling the signal of the rotary position sensor to normally operate;
(3) if the signal of the rotation position sensor has a fault, the operation control is stopped emergently;
(4) and estimating the electrical angle to participate in control.
Preferably, the step (2) specifically comprises the following steps:
(2.1) dragging the tested motor to a fixed rotating speed by the alternating current dynamometer, and outputting a voltage U when the peak current of the motor is distributed to a q axis and a d axis under the rotating speeddq；
And (2.2) giving the current Iq and the current Id of the motor to be detected by the upper computer, outputting a normal signal by the rotation position sensor, and obtaining the electric angle and the rotation speed numerical value of the motor through the micro control unit of the decoding chip.
Preferably, the step (3) specifically includes the following steps:
if the micro control unit detects a fault signal sent by a decoding chip of the rotary transformer, the rotary transformer enters an emergency stop operation state, the insulated gate bipolar transistor is closed, and the motor is in a free stop state.
Preferably, the step (4) specifically includes the following steps:
(4.1) estimating an electric angle to start to replace an electric angle value output by a rotary position sensor decoding chip, calculating a control process, and enabling the system to enter a limp running state;
and (4.2) storing the recorded electrical angle signal output by the rotary position sensor decoding chip by the upper computer, and recording the electrical angle signal as a test data result.
This optimize device of rotary position sensor in new energy automobile motor drive, its key feature is, the device include:
a processor configured to execute computer-executable instructions;
and the memory stores one or more computer executable instructions, and the computer executable instructions are executed by the processor to realize the steps of the method for optimizing the rotary position sensor in the motor drive of the new energy automobile.
The processor for optimizing the rotary position sensor in the motor drive of the new energy automobile is mainly characterized in that the processor is configured to execute computer executable instructions, and the computer executable instructions are executed by the processor to realize the steps of the method for optimizing the rotary position sensor in the motor drive of the new energy automobile.
The computer readable storage medium is mainly characterized in that a computer program is stored thereon, and the computer program can be executed by a processor to realize the steps of the method for optimizing the rotary position sensor in the motor drive of the new energy automobile.
By adopting the method, the device, the processor and the computer readable storage medium for optimizing the rotary position sensor in the motor drive of the new energy automobile, the system reliability and the safety are improved by adding a software estimation motor electrical angle module to a traditional permanent magnet synchronous motor control system based on magnetic field positioning vector control and by redundant design of the rotary position sensor.
Drawings
Fig. 1 is a control schematic block diagram of the method for optimizing a rotary position sensor in a motor drive of a new energy automobile according to the present invention.
Fig. 2 is a control flow diagram illustrating the method for optimizing the rotational position sensor in the motor drive of the new energy vehicle according to the present invention.
Fig. 3 is a control algorithm simulation diagram of the method for optimizing the rotary position sensor in the motor drive of the new energy vehicle according to the present invention.
Fig. 4 is a comparison graph of the rotational position sensor and the estimated electrical angle of the method for optimizing the rotational position sensor in the motor drive of the new energy vehicle according to the present invention.
Fig. 5 is a schematic diagram of phase current waveforms of the method for optimizing the resolver position sensor in the motor drive of the new energy automobile according to the invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
The method for optimizing the rotary position sensor in the motor drive of the new energy automobile comprises the following steps:
(1) the high-speed dynamometer drags the tested motor to rotate according to the current rotating speed instruction, the lower computer executes a current instruction sent by the upper computer, the output torque of the tested motor is controlled, and the output torque is fed back to the upper computer debugging system;
(2) controlling the signal of the rotary position sensor to normally operate;
(3) if the signal of the rotation position sensor has a fault, the operation control is stopped emergently;
(4) and estimating the electrical angle to participate in control.
As a preferred embodiment of the present invention, the step (2) specifically comprises the following steps:
(2.1) dragging the tested motor to a fixed rotating speed by the alternating current dynamometer, and outputting a voltage U when the peak current of the motor is distributed to a q axis and a d axis under the rotating speeddq；
And (2.2) giving the current Iq and the current Id of the motor to be detected by the upper computer, outputting a normal signal by the rotation position sensor, and obtaining the electric angle and the rotation speed numerical value of the motor through the micro control unit of the decoding chip.
As a preferred embodiment of the present invention, the step (3) specifically comprises the following steps:
if the micro control unit detects a fault signal sent by a decoding chip of the rotary transformer, the rotary transformer enters an emergency stop operation state, the insulated gate bipolar transistor is closed, and the motor is in a free stop state.
As a preferred embodiment of the present invention, the step (4) specifically comprises the following steps:
(4.1) estimating an electric angle to start to replace an electric angle value output by a rotary position sensor decoding chip, calculating a control process, and enabling the system to enter a limp running state;
and (4.2) storing the recorded electrical angle signal output by the rotary position sensor decoding chip by the upper computer, and recording the electrical angle signal as a test data result.
The device for optimizing the rotary position sensor in the motor drive of the new energy automobile comprises:
a processor configured to execute computer-executable instructions;
and the memory stores one or more computer executable instructions, and the computer executable instructions are executed by the processor to realize the steps of the method for optimizing the rotary position sensor in the motor drive of the new energy automobile.
The processor for optimizing the rotary position sensor in the motor drive of the new energy automobile is configured to execute computer executable instructions, and when the computer executable instructions are executed by the processor, the steps of the method for optimizing the rotary position sensor in the motor drive of the new energy automobile are realized.
The computer readable storage medium of the present invention has a computer program stored thereon, and the computer program can be executed by a processor to implement the steps of the method for optimizing a rotational position sensor in a motor drive of a new energy vehicle described above.
In the specific implementation mode of the invention, aiming at the problem that the traditional permanent magnet synchronous motor driving system depends on a unique rotary position sensor for the electric angle and speed signal and has great risk of potential safety hazard, the invention provides a novel method for identifying and estimating the electric angle of the motor in the running process through software.
According to the invention, a software electrical angle estimation module is added to the traditional control principle, the electrical angle position of the motor is continuously estimated in the motor operation process, once the rotary position sensor of the motor driving system fails, the estimated electrical angle can immediately participate in the control process, and the rotary position sensor is redundantly designed by a software method, so that the reliability and the safety of the system are improved.
The method optimizes the traditional vector control method of the salient pole permanent magnet synchronous motor, adds an electric angle and speed estimation module to the traditional control principle, adds a corresponding software redundancy design function, and improves the reliability of the product.
The three-phase alternating current I is converted into the alternating current I under the control principleabcConverting into I of a static coordinate system through 3/2 transformation of ClerkαAnd IβAnd then converted into a rotating shaft coordinate system I through Park transformationd、IqDirect current quantity, Id、IqPID correction is carried out on the output Ud and Uq and the output Ud and Uq are converted into U of a static coordinate system through inverse Park conversionαAnd Uβ。
The software electrical angle and rotating speed estimation module is used for estimating the 4 variables IαAnd Iβ，UαAnd UβAnd estimating the electrical angle and the speed of the permanent magnet synchronous motor through a software algorithm. When the motor rotation position sensor works normally, the electrical angle and the speed estimated by the software do not participate in the work, but are prepared all the time. Once the motor rotation position sensor breaks down, the electric angle and the rotation speed omega output by the electric angle and rotation speed estimation module are adopted by the electric control, the electric drive system cannot be anchored due to the sensor failure, and a limping mode and safe stop can be realized.
The angle estimation algorithm derivation and control principle is shown in fig. 1.
2.1, control algorithm derivation:
the derivation equation of the permanent magnet synchronous motor rotor electric angle estimation is as follows:
2.1.1, stationary frame voltage equation:
Figure BDA0003127251140000051
wherein psisα、ψsβIs the stator flux linkage.
2.1.2, Rs is identified by measurement or resistance parameters, here as known variables.
2.1.3 rotor flux linkage calculation:
Figure BDA0003127251140000052
wherein psifαAnd psifβIs the rotor flux linkage. L iss、isα、Ls、isβIs an inductive potential. Ls is the phase inductance of the motor, which can be measured by LCR measurement, or by parameter self-identification, and is referred to herein as a known parameter.
2.1.4 angular position estimation:
and directly performing arc tangent calculation on the two-phase orthogonal flux linkage obtained by calculation to obtain the rotor angle.
Figure BDA0003127251140000053
2.1.5 velocity estimation:
the rotating speed of the motor is estimated by calculating the difference value of the electrical angles within a certain time.
ω＝(θ(k)-θ(k-1))/Δt；
2.2, specific process and method:
bench test verification system includes: the system comprises a high-speed dynamometer motor, a tested motor, a lower computer electric control system and an upper computer debugging system.
The method for realizing the identification of the electrical angle parameter in the running process of the new energy motor, which is provided by the invention, comprises the following steps:
firstly, the high-speed dynamometer drags a tested motor to rotate according to a current rotating speed instruction, the lower computer executes a current instruction sent by the upper computer in an electric control mode, the tested motor is controlled to output torque, the output torque is fed back to an upper computer debugging system, and a debugger observes feedback quantity, adjusts control parameters, rotates a position sensor signal and calculates an estimated electric angle through software.
Secondly, the normal control of the signal of the rotary position sensor, the control of the emergency stop operation after the signal of the rotary position sensor fails, the software estimation electric angle participation control after the signal of the rotary position sensor fails and other three working modes are realized according to the following three steps:
the method comprises the following steps: normal control of the rotation position sensor signal:
a) the alternating current dynamometer drags a tested motor to reach a certain fixed rotating speed, and output voltage Udq of the motor cannot be saturated when peak current is distributed to q and d axes at the rotating speed;
b) the upper computer gives current Iq and Id of a tested motor, the rotation position sensor outputs a normal signal, and the MCU obtains the electrical angle and the rotation speed value of the motor through the decoding chip to control normal operation.
Step two: and controlling the emergency stop operation after the signal of the rotary position sensor fails.
a) During the operation process, the fault is artificially produced by pulling out the rotary position sensor wire harness.
b) At the moment, the decoding chip of the rotary transformer sends out a fault signal, the MCU enters an emergency stop running state after detecting the fault signal, the IGBT is closed, and the motor is in a free stop state.
Step three: and injecting faults into the rotary position sensor, and estimating an electrical angle to participate in control.
a) And in the operation process of the step one, manually manufacturing faults by pulling out the rotary position sensor wire harness.
b) At the moment, a decoding chip of the rotary transformer sends out a fault signal, after the MCU detects the fault signal, the electric angle estimated by the software starts to replace the electric angle numerical value output by the original decoding chip of the rotary position sensor, the electric angle numerical value participates in the calculation of the control process, and the system enters a limp running state.
And finally, the recorded electrical angle signal output by the rotary position sensor decoding chip and the electrical angle signal estimated by the software are stored by an upper computer and serve as a test data result.
As can be seen from fig. 2, compared with the conventional control method, the motor electrical angle estimation module is added to observe the output fault information of the rotation position sensor decoding chip. When the rotation position sensor has a fault, the electrical angle estimated by the software is immediately put into the control process, and the use performance of the system is not influenced. However, considering the safety factor, the system still enters a limp mode, and fault treatment is carried out after the whole vehicle is leaned against a safe area.
As can be seen from FIGS. 3 and 4, in the control method of the present invention, the consistency between the electrical angle output by the position sensor and the electrical angle estimated by the software is relatively high through the electrical angle estimation module, and when the sensor fails, the sensor can be completely replaced to participate in the control process, and the algorithm of the whole process is simple, safe and reliable.
The method is adopted to carry out bench test verification on a certain motor, the rated power of the motor is 12.5kw, the peak power is 25kw, the reference speed is 2500rpm, the turning speed is 4000rpm, the maximum rotating speed is 8000rpm, and the maximum torque is 96 Nm.
The electric angle estimation module is added to the traditional control algorithm, the electric angle of the motor is continuously estimated in the running process of the motor, and once the motor rotation position sensor fails, a position signal estimated by software can immediately participate in the control process. The realization method comprises the following steps:
a) when the motor is in a normal working condition, the implementation method refers to the first step of the specific flow and method;
b) when the motor is in a fault working condition of the rotary position sensor, the implementation method refers to the specific flow and the step two of the method;
c) and after the motor is in a fault working condition of the rotary position sensor and the software estimation module is enabled, the implementation method for the software to estimate the electric angle to participate in the control refers to the third step of the specific flow and method.
For a specific implementation of this embodiment, reference may be made to the relevant description in the above embodiments, which is not described herein again.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by suitable instruction execution devices. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, and the corresponding program may be stored in a computer readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
By adopting the method, the device, the processor and the computer readable storage medium for optimizing the rotary position sensor in the motor drive of the new energy automobile, the system reliability and the safety are improved by adding a software estimation motor electrical angle module to a traditional permanent magnet synchronous motor control system based on magnetic field positioning vector control and by redundant design of the rotary position sensor.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.

Claims (7)

1. A method for optimizing a rotary position sensor in motor driving of a new energy automobile is characterized by comprising the following steps:
(1) the high-speed dynamometer drags the tested motor to rotate according to the current rotating speed instruction, the lower computer executes a current instruction sent by the upper computer, the output torque of the tested motor is controlled, and the output torque is fed back to the upper computer debugging system;
(2) controlling the signal of the rotary position sensor to normally operate;
(3) if the signal of the rotation position sensor has a fault, the operation control is stopped emergently;
(4) and estimating the electrical angle to participate in control.
2. The method for optimizing the rotary position sensor in the motor drive of the new energy automobile according to claim 1, wherein the step (2) specifically comprises the following steps:
(2.1) dragging the tested motor to a fixed rotating speed by the alternating current dynamometer, and outputting a voltage U when the peak current of the motor is distributed to a q axis and a d axis under the rotating speeddq；
And (2.2) giving the current Iq and the current Id of the motor to be detected by the upper computer, outputting a normal signal by the rotation position sensor, and obtaining the electric angle and the rotation speed numerical value of the motor through the micro control unit of the decoding chip.
3. The method for optimizing the rotary position sensor in the motor drive of the new energy automobile according to claim 1, wherein the step (3) specifically comprises the following steps:
if the micro control unit detects a fault signal sent by a decoding chip of the rotary transformer, the rotary transformer enters an emergency stop operation state, the insulated gate bipolar transistor is closed, and the motor is in a free stop state.
4. The method for optimizing the rotary position sensor in the motor drive of the new energy automobile according to claim 1, wherein the step (4) specifically comprises the following steps:
(4.1) estimating an electric angle to start to replace an electric angle value output by a rotary position sensor decoding chip, calculating a control process, and enabling the system to enter a limp running state;
and (4.2) storing the recorded electrical angle signal output by the rotary position sensor decoding chip by the upper computer, and recording the electrical angle signal as a test data result.
5. A device for optimizing a rotary position sensor in motor driving of a new energy automobile is characterized by comprising:
a processor configured to execute computer-executable instructions;
a memory storing one or more computer executable instructions that, when executed by the processor, perform the steps of the method of optimizing a resolver position sensor in a motor drive of a new energy vehicle of any one of claims 1 to 4.
6. A processor for optimizing a rotary position sensor in a motor drive of a new energy automobile, wherein the processor is configured to execute computer-executable instructions, and when the computer-executable instructions are executed by the processor, the steps of the method for optimizing the rotary position sensor in the motor drive of the new energy automobile are realized according to any one of claims 1 to 4.
7. A computer-readable storage medium, having a computer program stored thereon, wherein the computer program is executable by a processor to implement the steps of the method for optimizing a rotational position sensor in a motor drive of a new energy vehicle according to any one of claims 1 to 4.
CN202110693873.5A 2021-06-22 2021-06-22 Method, device and processor for optimizing rotary position sensor in new energy automobile motor drive and computer readable storage medium thereof Withdrawn CN113364382A (en)

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CN114172418A (en) * 2021-11-30 2022-03-11 中国第一汽车股份有限公司 Motor current sensor state detection system and method
CN114244224A (en) * 2021-11-22 2022-03-25 杭州阔博科技有限公司 Control method and system for solving abnormity of position sensor

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