阅读说明：本技术 一种电机堵转方法及装置 (Motor stalling method and device ) 是由 刘思远 董晓 王建坡 部荣 刘文文 李�浩 于 2018-05-31 设计创作，主要内容包括：本发明提供了一种电机堵转方法及装置,所述方法包括：接收相位保持不变的堵转引导信号；确定所述堵转引导信号的第一相位；基于所述第一相位,确定堵转控制电流的第二相位；产生所述第二相位的堵转控制电流；向所述助力电机发送所述堵转控制电流,以使所述转向助力电机的定子在所述堵转控制电流的作用下,产生与所述第二相位对应方向的磁场,所述转向助力电机的转子在所述磁场作用下堵转于相应位置。本发明所述的电机堵转方法,该转向助力电机的定子在上述堵转控制电流的作用下,产生相应方向的磁场,转向助力电机的转子在该磁场作用下堵转于相应位置,安全性能好,可以实现任意位置的堵转,使用方便；无需机械装置,降低了成本。(The invention provides a motor locked-rotor method and a device, wherein the method comprises the following steps: receiving a locked-rotor pilot signal with a constant phase; determining a first phase of the locked rotor pilot signal; determining a second phase of the locked-rotor control current based on the first phase; generating a locked-rotor control current of the second phase; and sending the locked-rotor control current to the power-assisted motor, so that the stator of the power-assisted steering motor generates a magnetic field in a direction corresponding to the second phase under the action of the locked-rotor control current, and the rotor of the power-assisted steering motor is locked at a corresponding position under the action of the magnetic field. According to the motor stalling method, the stator of the power-assisted steering motor generates a magnetic field in a corresponding direction under the action of the stalling control current, and the rotor of the power-assisted steering motor stalls at a corresponding position under the action of the magnetic field, so that the safety performance is good, stalling at any position can be realized, and the motor stalling method is convenient to use; and a mechanical device is not needed, so that the cost is reduced.)

1. a motor stalling method is applied to a power steering motor controller, and is characterized by comprising the following steps:

Receiving a locked-rotor pilot signal with a constant phase;

determining a first phase of the locked rotor pilot signal;

determining a second phase of the locked-rotor control current based on the first phase;

generating a locked-rotor control current of the second phase;

And sending the locked-rotor control current to the power-assisted motor, so that the stator of the power-assisted steering motor generates a magnetic field in a direction corresponding to the second phase under the action of the locked-rotor control current, and the rotor of the power-assisted steering motor is locked at a corresponding position under the action of the magnetic field.

2. the method of claim 1, wherein the step of receiving the locked pilot signal with the phase maintained constant comprises:

Sending a command to a signal generator or a rotor position sensor to generate a locked rotor pilot signal;

Receiving a locked rotor pilot signal generated by the signal generator or the rotor position sensor with a phase maintained.

3. the method of claim 2, wherein the rotor position sensor comprises: a rotor;

the rotor of the rotor position sensor is stationary.

4. The method of claim 3, wherein the rotor position sensor comprises: one of a magnetoresistive sensor with a rotor, a hall sensor with a rotor, and a resolver sensor with a rotor;

The resolver type sensor with a rotor further includes: excitation coil, sine coil, cosine coil.

5. The method of claim 2 or 4, wherein when the locked pilot signal is generated by the rotary transformer sensor with a rotor, the step of sending a command to a signal generator or a rotor position sensor to generate the locked pilot signal comprises:

And sending an excitation signal to the rotary transformer sensor with the rotor, so that the rotary transformer sensor with the rotor receives the excitation signal to magnetize the rotor of the rotary transformer sensor with the rotor and generate an alternating magnetic field, and under the action of the alternating magnetic field, a sine coil and a cosine coil of the rotary transformer sensor with the rotor generate a locked rotation guide signal with the phase kept unchanged.

6. A motor stalling device, which is applied to a power steering motor controller, is characterized by comprising:

The locked-rotor pilot signal receiving module is used for receiving a locked-rotor pilot signal with a constant phase;

a first phase determination module to determine a first phase of the locked rotor pilot signal;

A second phase determination module for determining a second phase of the locked-rotor control current based on the first phase;

The locked-rotor control current generation module is used for generating the locked-rotor control current of the second phase;

and the steering power-assisted motor control module is used for sending the locked-rotor control current to the power-assisted motor so that the stator of the steering power-assisted motor generates a magnetic field in a direction corresponding to the second phase under the action of the locked-rotor control current, and the rotor of the steering power-assisted motor is locked at a corresponding position under the action of the magnetic field.

7. the apparatus of claim 6, wherein the locked-rotor pilot signal receiving module comprises;

A locked-rotor pilot signal generation command transmission unit for transmitting a command to generate a locked-rotor pilot signal to the signal generator or the rotor position sensor;

And a locked-rotor pilot signal receiving unit for receiving a locked-rotor pilot signal whose phase is maintained by the signal generator or the rotor position sensor.

8. the apparatus of claim 7, wherein the rotor position sensor comprises: a rotor;

The rotor of the rotor position sensor is stationary.

9. the apparatus of claim 8, wherein the rotor position sensor comprises: one of a magnetoresistive sensor with a rotor, a hall sensor with a rotor, and a resolver sensor with a rotor;

The resolver type sensor with a rotor further includes: excitation coil, sine coil, cosine coil.

10. The apparatus according to claim 7 or 9, wherein when the locked guide signal is generated by the rotary transformer type sensor with a rotor, the locked guide signal generating command transmitting unit includes:

And the blocking guide signal generation command sending subunit is used for sending an excitation signal to the rotary transformer type sensor with the rotor, so that the rotary transformer type sensor with the rotor receives the excitation signal to magnetize the rotor of the rotary transformer type sensor with the rotor and generate an alternating magnetic field, and the sine coil and the cosine coil of the rotary transformer type sensor with the rotor generate the blocking guide signal with the phase kept unchanged under the action of the alternating magnetic field.

Technical Field

The invention relates to the technical field of motors, in particular to a motor stalling method and a motor stalling device.

Background

In an electric power steering system of a vehicle, a steering assist motor is used to provide steering assist when the vehicle is steered, which saves effort for a user. In the development and test process of the electric power steering system, a locked-rotor test needs to be carried out on a steering power motor to check the performance of the steering power motor and calibrate the steering power motor.

at present, in the development and test processes of an electric power steering system, in order to realize the locked-rotor of a power steering motor, a mechanical device is generally used to clamp a rotor of the power steering motor, lock the rotor of the power steering motor, and generate a locked-rotor state from the aspect of mechanical braking.

However, the above-described mechanical device has a drawback in that the rotor of the steering motor is clamped and locked by the mechanical device, and a locked state occurs in the mechanical brake layer, as follows: firstly, the rotor of the steering power-assisted motor is locked by mechanical braking, so that the danger of rotor slipping and mechanical structure loosening is easily caused; secondly, the mechanical device is heavy, the mechanical device clamps the rotor and simultaneously needs to fix the power-assisted motor body, and then the required mechanical rotation blocking device is large in mass, high in strength, high in cost and inconvenient to use.

disclosure of Invention

in view of the above, the present invention is directed to a method for blocking a motor, so as to generate a motor blocking state safely, with low cost and conveniently.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a motor stalling method is applied to a power steering motor controller and comprises the following steps:

Receiving a locked-rotor pilot signal with a constant phase;

determining a first phase of the locked rotor pilot signal;

Determining a second phase of the locked-rotor control current based on the first phase;

generating a locked-rotor control current of the second phase;

And sending the locked-rotor control current to the power-assisted motor, so that the stator of the power-assisted steering motor generates a magnetic field in a direction corresponding to the second phase under the action of the locked-rotor control current, and the rotor of the power-assisted steering motor is locked at a corresponding position under the action of the magnetic field.

Further, the step of receiving the locked-rotor pilot signal with the phase kept unchanged includes:

sending a command to a signal generator or a rotor position sensor to generate a locked rotor pilot signal;

receiving a locked rotor pilot signal generated by the signal generator or the rotor position sensor with a phase maintained.

Further, the rotor position sensor includes: a rotor;

the rotor of the rotor position sensor is stationary.

further, the rotor position sensor includes: one of a magnetoresistive sensor with a rotor, a hall sensor with a rotor, and a resolver sensor with a rotor;

The resolver type sensor with a rotor further includes: excitation coil, sine coil, cosine coil.

Further, when the locked rotation guide signal is generated by the rotary transformer type sensor with the rotor, the step of sending a command for generating the locked rotation guide signal to the signal generator or the rotor position sensor includes:

and sending an excitation signal to the rotary transformer sensor with the rotor, so that the rotary transformer sensor with the rotor receives the excitation signal to magnetize the rotor of the rotary transformer sensor with the rotor and generate an alternating magnetic field, and under the action of the alternating magnetic field, a sine coil and a cosine coil of the rotary transformer sensor with the rotor generate a locked rotation guide signal with the phase kept unchanged.

Compared with the prior art, the motor stalling method has the following advantages:

The motor stalling method of the invention receives a stalling guide signal with a first phase kept unchanged, the stalling guide signal is independent of a power steering motor, the first phase of the stalling guide signal is determined, a second phase of a stalling control current is determined based on the first phase, a stalling control current of the second phase is generated, the power steering motor is controlled according to the stalling control current, a stator of the power steering motor generates a magnetic field in a certain direction corresponding to the second phase under the action of the stalling control current, a rotor of the power steering motor stalls at a corresponding position under the action of magnetic field force of the magnetic field, further, the stalling of the power steering motor is realized through the action of the magnetic field force, as long as the magnetic field force is kept unchanged, the stalling state of the power steering motor cannot be changed, and electronic slippage and mechanical looseness cannot be generated, the safety performance is good, the locked-rotor position of the motor can be changed only by changing the locked-rotor guide signal, the locked-rotor at any position can be realized, more useful data can be mined, and the use is convenient; meanwhile, a mechanical device is not needed, and the cost is reduced.

another objective of the present invention is to provide a motor stalling device, which can generate a motor stalling state safely, inexpensively and conveniently.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a motor stalling device, which is applied to a power steering motor controller, the device comprising:

the locked-rotor pilot signal receiving module is used for receiving a locked-rotor pilot signal with a constant phase;

A first phase determination module to determine a first phase of the locked rotor pilot signal;

A second phase determination module for determining a second phase of the locked-rotor control current based on the first phase;

the locked-rotor control current generation module is used for generating the locked-rotor control current of the second phase;

And the steering power-assisted motor control module is used for sending the locked-rotor control current to the power-assisted motor so that the stator of the steering power-assisted motor generates a magnetic field in a direction corresponding to the second phase under the action of the locked-rotor control current, and the rotor of the steering power-assisted motor is locked at a corresponding position under the action of the magnetic field.

Further, the locked-rotor pilot signal receiving module comprises;

a locked-rotor pilot signal generation command transmission unit for transmitting a command to generate a locked-rotor pilot signal to the signal generator or the rotor position sensor;

And a locked-rotor pilot signal receiving unit for receiving a locked-rotor pilot signal whose phase is maintained by the signal generator or the rotor position sensor.

Further, the rotor position sensor includes: a rotor;

the rotor of the rotor position sensor is stationary.

further, the rotor position sensor includes: one of a magnetoresistive sensor with a rotor, a hall sensor with a rotor, and a resolver sensor with a rotor;

the resolver type sensor with a rotor further includes: excitation coil, sine coil, cosine coil.

further, when the locked rotation guide signal is generated by the rotary transformer type sensor with the rotor, the locked rotation guide signal generation command transmitting unit includes:

And the blocking guide signal generation command sending subunit is used for sending an excitation signal to the rotary transformer type sensor with the rotor, so that the rotary transformer type sensor with the rotor receives the excitation signal to magnetize the rotor of the rotary transformer type sensor with the rotor and generate an alternating magnetic field, and the sine coil and the cosine coil of the rotary transformer type sensor with the rotor generate the blocking guide signal with the phase kept unchanged under the action of the alternating magnetic field.

compared with the prior art, the motor stalling device and the motor stalling method have the same advantages, and are not described again.

drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

Fig. 1 is a flowchart of a motor stalling method according to an embodiment of the present invention;

Fig. 2 is a schematic diagram illustrating a connection between a power steering motor and a motor controller according to a first embodiment of the present invention;

Fig. 3 is a flowchart of a motor stalling method according to a second embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a resolver sensor with a rotor according to a second embodiment of the present invention;

Fig. 5 is a block device for a motor according to a third embodiment of the present invention;

Fig. 6 is a further motor rotation blocking device provided in the third embodiment of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.