CN219446959U - Parking actuator operation device - Google Patents

Abstract

The utility model relates to a parking actuator operating device which comprises a direct-current power supply, a starting button, a processor, a voltage converter, a three-phase power driving module, a three-phase inverter bridge and a wire harness plug. The direct current power supply supplies power to the processor; the processor generates and outputs a three-phase driving waveform and a pulse width modulation signal when the starting key is in a triggering state; the voltage converter converts direct-current voltage provided by the direct-current power supply into driving voltage matched with a motor to be operated under the action of pulse width modulation signals of the processor; the three-phase power driving module amplifies the three-phase driving waveform under the power supply of the driving voltage to obtain an amplified signal; the three-phase inverter bridge is connected with the motor to be operated through the wire harness plug, and inverts direct-current voltage into alternating-current voltage under the driving of the amplified signal, so that the motor to be operated is driven to rotate, the electronic parking actuator is released or hung in, emergency operation can be performed under the condition that the electronic parking actuator fails to work, and the driving safety is remarkably improved.

Description

Parking actuator operation device

Technical Field

The utility model relates to the technical field of three-phase direct current brushless motors, in particular to a parking actuator operating device.

Background

With the recent rise of applications of vehicle electrification and the popularization of new energy automobiles including hybrid vehicles and electric vehicles, the parking structure of a vehicle transmission has been changed from a mechanical parking actuator to an electronic parking actuator. The electronic parking actuator is essentially a three-phase brushless direct current motor structure, and the operating principle is that the motor rotates from a non-parking position to a parking position by continuously changing the electrified phase to drive the magnetic field to rotate so as to drive the gearbox to perform locking action.

However, if the electric system is failed during the running process of the vehicle, the electronic parking actuator fails to work, so that the parking function of the vehicle is disabled, and the running safety of the vehicle is greatly affected.

Disclosure of Invention

Accordingly, it is necessary to provide a parking actuator operating device capable of performing an emergency operation on an electronic parking actuator to improve driving safety, in order to solve the problem that the electronic actuator fails to operate.

The embodiment of the application provides a parking actuator operating device, which comprises a direct-current power supply, a starting key, a processor, a voltage converter, a three-phase power driving module, a three-phase inverter bridge and a wire harness plug, wherein the direct-current power supply is connected with the starting key;

the direct current power supply is used for supplying power to the processor;

the processor is connected with the direct-current power supply and the starting key, and generates and outputs a three-phase driving waveform and a pulse width modulation signal when the starting key is in a trigger state;

the voltage converter is connected with the direct current power supply and the processor, and is used for converting the direct current voltage provided by the direct current power supply into a driving voltage matched with the motor to be operated under the action of a pulse width modulation signal of the processor, and outputting the driving voltage from the output end;

the three-phase power driving module is connected with the processor and the voltage converter and is used for amplifying the three-phase driving waveform to obtain an amplified signal under the power supply of the driving voltage;

the three-phase inverter bridge is connected with the direct current power supply and the three-phase power driving module, the three-phase inverter bridge is further connected with the motor to be operated through a wire harness plug, and the three-phase inverter bridge is used for inverting the direct current voltage provided by the direct current power supply into alternating current voltage under the driving of an amplified signal so as to drive the motor to be operated to rotate from a parking position to a non-parking position or from the non-parking position to the parking position.

In one embodiment, the number of the starting keys is at least two; the processor comprises at least two processing chips; the starting keys are connected with the processing chip in a one-to-one correspondence manner; each processing chip stores parking control parameters of one motor model, and the parking control parameters stored by different processing chips are different.

In one embodiment, the apparatus further comprises a current sensor;

the current sensor is connected in series on a power supply loop of the three-phase inverter bridge to the motor to be operated, the output end of the current sensor is connected with the processor, and the processor is further used for adjusting three-phase driving waveforms according to the current detected by the current sensor so as to inhibit torque pulsation of the motor to be operated.

In one embodiment, the processor is configured to connect with an encoder and a hall sensor of a motor to be operated via a harness plug;

the processor is used for acquiring the working parameters of the encoder and the working parameters of the Hall sensor of the motor to be operated and determining the working parameters of the motor to be operated according to the working parameters of the encoder and the working parameters of the Hall sensor; the operation parameters comprise the rotation speed, the rotation angle and the rotation direction of the motor to be operated;

the processor corrects the three-phase drive waveform according to the operating parameters.

In one embodiment, the processor is further configured to connect with a three-phase winding of the motor to be operated through a harness plug;

the processor is used for sampling the end voltage of the three-phase winding of the motor to be operated, carrying out zero-crossing detection on the counter electromotive force of the motor to be operated according to the sampled end voltage, and adjusting the three-phase driving waveform according to the zero-crossing detection result.

In one embodiment, the processor, upon receiving the dc voltage of the dc power supply, gives the motor to be operated a default zero position.

In one embodiment, the parking actuator operating device further comprises a device power switch;

the power switch of the device is connected in series on a common power supply loop of the direct current power supply to the processor, the voltage converter and the three-phase inverter bridge.

In one embodiment, the parking actuator operating apparatus further includes a driving waveform input module;

the output end of the driving waveform input module is connected with the processor, and the driving waveform input module is used for outputting pulse signals; the pulse signal is used for representing the rotation angle of a motor to be operated which is expected to be driven by a user, or the rotation speed and the rotation angle;

the processor is also used for converting the pulse signal into a three-phase driving waveform.

In one embodiment, the drive waveform input module includes a potentiometer for adjusting the pulse signal.

In one embodiment, the driving waveform input module further comprises a serial port; the serial port is used for connecting a computer; the computer is used for generating instruction data strings to the processor through the serial port; the processor is also configured to convert the command data string into a three-phase drive waveform.

The parking executor operating means of this application includes DC power supply, start button, treater, voltage converter, three-phase power drive module, three-phase contravariant bridge and pencil plug. The direct current power supply is used for supplying power to the processor; the processor is connected with the direct-current power supply and the starting key, and generates and outputs a three-phase driving waveform and a pulse width modulation signal when the starting key is in a trigger state; the voltage converter is connected with the direct current power supply and the processor, and is used for converting the direct current voltage provided by the direct current power supply into a driving voltage matched with the motor to be operated under the action of a pulse width modulation signal of the processor, and outputting the driving voltage from the output end; the three-phase power driving module is connected with the processor and the voltage converter and is used for amplifying the three-phase driving waveform to obtain an amplified signal under the power supply of the driving voltage; the three-phase inverter bridge is connected with the direct-current power supply and the three-phase power driving module and is also inserted through a wire harness

The head is connected with the motor to be operated, the three-phase inverter bridge is used for inverting the 5 direct-current voltage provided by the direct-current power supply into alternating-current voltage under the drive of the amplified signal so as to drive the motor to be operated to rotate from the parking position to the non-parking position,

or rotated from an out-of-park position to a park position. Through the device, under the emergency condition that the electronic parking actuator cannot work due to faults, the key trigger device is started to act, the motor to be operated is driven to rotate from the parking position to the non-parking position or from the non-parking position to the parking position, release or hanging of the electronic parking actuator is timely achieved, and driving safety is remarkably improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional techniques of the present application, the drawings required for the description of the embodiments or the conventional techniques will be briefly introduced, and it is apparent that the description below

The drawings in (3) are merely examples of the present application, and other drawings may be obtained from these drawings without giving rise to inventive efforts to those of ordinary skill in the art.

FIG. 1 is a schematic view of a parking actuator operation apparatus according to an embodiment;

fig. 2 is a schematic structural view of a parking actuator operating apparatus according to another embodiment.

Detailed Description

0 to facilitate an understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings.

Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

In one embodiment, as shown in fig. 1, there is provided a parking actuator operating apparatus 1 including a direct current power source 101, a start button 102, a processor 103, a voltage converter 104, a three-phase power driving module 105, a three-phase inverter bridge 106, and a harness plug 107.

Wherein the DC power supply 101 is used for supplying power to the processor 103;

the processor 103 is connected with the direct-current power supply 101 and the starting key 102, and generates and outputs a three-phase driving waveform and a pulse width modulation signal when the starting key 102 is in a trigger state;

the voltage converter 104 is connected with the direct current power supply 101 and the processor 103, and is used for converting the direct current voltage provided by the direct current power supply 101 into a driving voltage matched with the motor 2 to be operated under the action of a pulse width modulation signal of the processor 103, and outputting the driving voltage from an output end;

the three-phase power driving module 105 is connected with the processor 103 and the voltage converter 104 and is used for amplifying the three-phase driving waveform to obtain an amplified signal under the power supply of the driving voltage;

the three-phase inverter bridge 106 is connected with the direct-current power supply 101 and the three-phase power driving module 105, the three-phase inverter bridge 106 is also connected with the motor 2 to be operated through the wire harness plug 107, and the three-phase inverter bridge 106 is used for inverting the direct-current voltage provided by the direct-current power supply 101 into alternating-current voltage under the driving of the amplified signal so as to drive the motor 2 to be operated to rotate from the parking position to the non-parking position or from the non-parking position to the parking position.

The brushless DC motor is composed of a motor main body and a driver, is a typical electromechanical integrated product, and the stator winding of the motor main body is mostly made into a three-phase symmetrical star connection method, which is called a three-phase brushless DC motor. The electronic parking actuator is driven by a three-phase brushless direct current motor, the torque of the motor is transmitted to an output shaft through an internal gear transmission mechanism, and the output shaft can output enough driving torque within a certain angle range to drive the mechanical parking mechanism at the gear box end of the bridge to act. The motor rotates from the parking position to the non-parking position, so that the release of the electronic parking actuator can be realized, and the hanging of the electronic parking actuator can be realized by rotating from the non-parking position to the parking position.

Specifically, in the parking actuator operation apparatus 1 of the present application, the processor 103 is supplied with power by the dc power supply 101 inside the apparatus, and the processor 103 responds to the trigger action for the start button 102. In an emergency situation where the electronic parking actuator fails, first, the processor 103 is caused to generate and output a three-phase driving waveform and a pulse width modulation signal by activating the trigger action of the key 102. The three-phase driving waveform corresponds to a waveform corresponding to a rotation angle required for driving the motor.

Next, the voltage converter 104 converts the dc voltage supplied from the dc power supply 101 into a driving voltage matched to the motor 2 to be operated under the pulse width modulation signal of the processor 103, and outputs the driving voltage from the output terminal. According to the pulse width modulation signal of the processor 103, the drive voltage of the output of the voltage converter 104 is adjusted to be matched with the drive voltage of the motor 2 to be operated by adjusting the frequency of the on/off of the transistor in the voltage converter 104. The three-phase power driving module 105 amplifies the three-phase driving waveform outputted by the processor 103 under the driving voltage supply, and further obtains an amplified signal. The required amplified signal is a high-voltage vector waveform required by the driving motor so as to drive the motor to rotate by an angle corresponding to the amplified signal.

Finally, the three-phase inverter bridge 106 receives an input of the amplified signal, and inverts the dc voltage supplied from the dc power supply 101 into an ac voltage under the driving of the amplified signal. The three-phase inverter bridge 106 is connected with the motor 2 to be operated through the wire harness plug 107, and controls the coil of the motor 2 to be operated to be electrified, so that the motor 2 to be operated is driven to rotate, and the motor is enabled to rotate from a parking position to a non-parking position or from the non-parking position to the parking position, so that the release or hanging of the electronic parking actuator is realized.

The parking actuator operation apparatus 1 includes a dc power supply 101, a start button 102, a processor 103, a voltage converter 104, a three-phase power drive module 105, a three-phase inverter bridge 106, and a harness plug 107. The direct current power supply 101 is used for supplying power to the processor 103; the processor 103 is connected with the direct-current power supply 101 and the starting key 102, and the processor 103 generates and outputs a three-phase driving waveform and a pulse width modulation signal when the starting key 102 is in a trigger state; the voltage converter 104 is connected with the direct current power supply 101 and the processor 103, and is used for converting the direct current voltage provided by the direct current power supply 101 into a driving voltage matched with the motor 2 to be operated under the action of a pulse width modulation signal of the processor 103, and outputting the driving voltage from an output end; the three-phase power driving module 105 is connected with the processor 103 and the voltage converter 104 and is used for amplifying the three-phase driving waveform to obtain an amplified signal under the power supply of the driving voltage; the three-phase inverter bridge 106 is connected with the direct-current power supply 101 and the three-phase power driving module 105, the three-phase inverter bridge 106 is also connected with the motor 2 to be operated through the wire harness plug 107, and the three-phase inverter bridge 106 is used for inverting the direct-current voltage provided by the direct-current power supply 101 into alternating-current voltage under the driving of the amplified signal so as to drive the motor 2 to be operated to rotate from the parking position to the non-parking position or from the non-parking position to the parking position. Through the device, under the emergency condition that the electronic parking actuator cannot work due to faults, the device is triggered to act through the starting key 102, the motor 2 to be operated is driven to rotate from the parking position to the non-parking position or from the non-parking position to the parking position, release or hanging of the electronic parking actuator is timely achieved, and driving safety is remarkably improved.

In one embodiment, the number of actuation keys 102 is at least two; the processor 103 includes at least two processing chips; the starting keys 102 are connected with the processing chips in a one-to-one correspondence manner; each processing chip stores parking control parameters of one motor model, and the parking control parameters stored by different processing chips are different.

Specifically, the number of the start keys 102 is at least two; the processor 103 includes at least two processing chips; the starting keys 102 are connected with the processing chips in a one-to-one correspondence manner; each processing chip stores parking control parameters of one motor model, and the parking control parameters stored by different processing chips are different. The parking control parameters are parking control parameters of at least two motor models prestored by a processing chip in the processor 103, so that the device can be suitable for driving control of at least two model motors.

The specific working process may be that one end of the start button 102 is connected with a power supply inside the device, the other end is connected with a processing chip, the start button 102 is in a trigger state, the power supply supplies power to the processing chip, the processing chip works, and three-phase driving waveforms and pulse width modulation signals are output. The parking control parameters stored in different processing chips are different, so that the three-phase driving waveforms and pulse width modulation signals output by the processing chips are different. The reason why the pulse width modulation signals are different is that the rotational speeds and torques required for the different types of motors are different, and the driving voltages of the three-phase power driving modules 105 are also different.

In this embodiment, through setting up two at least start button 102, the processor 103 includes two at least processing chips, and start button 102 one-to-one connects processing chip, and every processing chip stores the parking control parameter of a motor model, and the parking control parameter that the different processing chip stored is different, can make the electronic parking executor emergency device of this application be applicable to the parking control of waiting to operate motor 2 of different models, is showing the practicality that improves the electronic parking executor emergency device of this application.

In one embodiment, as shown in FIG. 2, the apparatus further includes a current sensor 108. The current sensor 108 is connected in series to a power supply loop of the three-phase inverter bridge 106 to the motor 2 to be operated, an output end of the current sensor 108 is connected to the processor 103, and the processor 103 is further configured to adjust a three-phase driving waveform according to the current detected by the current sensor 108, so as to inhibit torque pulsation of the motor 2 to be operated.

Specifically, torque ripple is an inherent defect of a brushless dc motor, and causes abnormal situations such as fluctuation of the rotational speed of the motor, noise, and mechanical vibration. The motor 2 to be operated generates torque ripple in the conduction region and during commutation due to the interaction of the motor's stator current and rotor magnetic field, and the presence of inductance in the windings of each phase of the stator, which impedes the instantaneous change in current.

The current sensor 108 of the parking actuator operation device 1 is connected in series to a power supply circuit of the three-phase inverter bridge 106 to the motor 2 to be operated, and an output end of the current sensor 108 is connected with the processor 103. The processor 103 adjusts the three-phase driving waveform according to the current detected by the current sensor 108, thereby keeping the current of the three-phase inverter bridge 106 to the power supply circuit of the motor 2 to be operated constant to suppress the torque ripple of the motor 2 to be operated.

It should be noted that the present embodiment may be implemented by a current closed-loop control method in the prior art.

In this embodiment, by providing the current sensor 108 on the power supply loop of the three-phase inverter bridge 106 to the motor 2 to be operated, the output end of the current sensor 108 is connected to the processor 103, and the processor 103 realizes current closed-loop control, so as to suppress torque pulsation of the motor 2 to be operated, and improve control accuracy of the parking actuator operating device 1.

In one embodiment, as shown in fig. 2, the processor 103 is configured to interface with the encoder 22 and hall sensor 24 of the motor 2 to be operated via a harness plug 107. The processor 103 is configured to obtain an operation parameter of the encoder 22 and an operation parameter of the hall sensor 24 of the motor 2 to be operated, and determine the operation parameter of the motor 2 to be operated according to the operation parameter of the encoder 22 and the operation parameter of the hall sensor 24; the operation parameters include the rotation speed, rotation angle, and rotation direction of the motor 2 to be operated; the processor 103 modifies the three-phase drive waveform in accordance with the operating parameters.

Specifically, the encoder 22 is a device that compiles and converts signals or data into a signal form that can be used for communication, transmission and storage, and the encoder 22 of the motor is a sensor for measuring the magnetic pole position and the motor rotation angle and speed. The hall sensor 24 can obtain the position of the motor rotor, convert the position signal of the rotor magnetic pole into an electric signal and output the electric signal to the processor 103, and the processor 103 controls the stator winding to commutate according to the position of the rotor so as to drive the rotor to rotate.

The processor 103 acquires the operation parameters of the encoder 22 and the operation parameters of the hall sensor 24 of the motor 2 to be operated, and determines the operation parameters of the motor 2 to be operated based on the operation parameters of the encoder 22 and the operation parameters of the hall sensor 24. The operating parameters include, among others, the rotational speed, the rotational angle and the rotational direction of the motor 2 to be operated. The processor 103 then carries out a speed feedback adjustment and a position feedback adjustment of the motor 2 to be operated by correcting the three-phase drive waveform according to the operating parameters of the motor. For example, the hall sensor 24 of the motor 2 to be operated may be two latch hall sensors 24 provided on the stator, which are 90 ° apart.

It should be noted that the present embodiment may be implemented by a speed feedback adjustment and a position feedback adjustment method in the prior art.

In this embodiment, the working parameters of the encoder 22 and the working parameters of the hall sensor 24 of the motor 2 to be operated are obtained by the processor 103, and the three-phase driving waveform is corrected by the processor 103, so as to realize the speed feedback adjustment and the position feedback adjustment of the motor 2 to be operated, and further improve the control precision of the parking actuator operating device 1.

In one embodiment, as shown in fig. 2, the processor 103 is also configured to connect with the three-phase winding 26 of the motor 2 to be operated via a harness plug 107. The processor 103 is configured to sample a terminal voltage of the three-phase winding 26 of the motor 2 to be operated, perform zero-crossing detection on a counter electromotive force of the motor 2 to be operated according to the sampled terminal voltage, and adjust a three-phase driving waveform according to a zero-crossing detection result.

Specifically, the brushless motor is driven by a three-phase inverter bridge 106, and has 6 commutation states in one electrical angle period in order to generate the maximum average torque according to the rotor position. The three-phase winding 26 of the motor is conducted only in two phases, and zero-crossing detection is required to be carried out on the counter electromotive force of the motor during sensorless control of the brushless motor so as to realize motor commutation control.

The processor 103 samples the terminal voltage of the three-phase winding 26 of the motor 2 to be operated, zero-crossing detects the counter electromotive force of the motor 2 to be operated according to the sampled terminal voltage, and adjusts the three-phase driving waveform according to the zero-crossing detection result.

It should be noted that this embodiment may be implemented by a back emf zero-crossing detection method in the prior art.

In this embodiment, by implementing zero-crossing detection of back electromotive force on the motor 2 to be operated, it can be ensured that the motor 2 to be operated reaches the maximum output torque, so as to improve the working efficiency of the parking actuator operating device 1, so as to reduce the operating time and save the electric energy of the device.

In one embodiment, the processor 103, upon receiving the dc voltage of the dc power source 101, the processor 103 gives a default zero position for the motor 2 to be operated.

In one embodiment, as shown in fig. 2, the parking actuator operating apparatus 1 further includes an apparatus power switch 109. The device power switch 109 is connected in series to a common power supply circuit of the dc power supply 101 to the processor 103, the voltage converter 104, and the three-phase inverter bridge 106.

Specifically, when the device is in an idle state, the device power switch 109 may be kept in an off state, and a common power supply loop between the dc power supply 101 and the processor 103, the voltage converter 104, and the three-phase inverter bridge 106 is disconnected, so as to save the electric energy of the dc power supply 101. When the device needs to enter the working state, the device power switch 109 is closed, so that the direct current power supply 101 is conducted to the common power supply loop of the processor 103, the voltage converter 104 and the three-phase inverter bridge 106, and the parking actuator operation device 1 rapidly enters the working state.

In one embodiment, as shown in fig. 2, the parking actuator operating apparatus 1 further includes a driving waveform input module 110. The output end of the driving waveform input module 110 is connected with the processor 103, and the driving waveform input module 110 is used for outputting pulse signals; the pulse signal is used for representing the rotation angle of the motor 2 to be operated which is expected to be driven by a user, or the rotation speed and the rotation angle; the processor 103 is also used to convert the pulse signal into a three-phase drive waveform.

Specifically, the parking actuator operating apparatus 1 of the present application further includes a driving waveform input module 110 that allows a user to manually adjust the operation parameters of the motor 2 to be operated. The output end of the driving waveform input module 110 is connected with the processor 103, and the driving waveform input module 110 is used for outputting pulse signals; the pulse signal is used to characterize the rotation angle at which the user desires to drive the motor 2 to be operated in rotation, or the rotation speed and the rotation angle. The processor 103 is also used to convert the pulse signal into a three-phase drive waveform. The specific process is that the processor 103 converts the pulse signal into a corresponding binary command, and then the PWM module inside the processor 103 generates a three-phase driving waveform corresponding to the pulse signal according to the binary command.

In this embodiment, the user can manually adjust the operation parameters of the motor through the driving waveform input module 110, so as to expand the application scenario of the parking actuator operation device 1, and further improve the working reliability of the parking actuator operation device 1.

In one embodiment, the driving waveform input module 110 includes a potentiometer for adjusting the pulse signal.

In one embodiment, the driving waveform input module 110 further includes a serial port, the serial port is used for connecting a computer, and the computer is used for generating instruction data serial to the processor 103 through the serial port; the processor 103 is also used to convert the command data string into a three-phase drive waveform.

In order to better understand the above method, a parking actuator operating device 1 of the present application is explained in detail below.

First, as shown in fig. 2, the parking actuator operation apparatus 1 of the present application includes a direct current power source 101, a start button 102, a processor 103, a voltage converter 104, a three-phase power drive module 105, a three-phase inverter bridge 106, and a harness plug 107 in terms of the constituent structure. Wherein the DC power supply 101 is used for supplying power to the processor 103; the processor 103 is connected with the direct-current power supply 101 and the starting key 102; the voltage converter 104 is connected with the direct current power supply 101 and the processor 103; the three-phase power driving module 105 is connected with the processor 103 and the voltage converter 104; the three-phase inverter bridge 106 connects the direct-current power supply 101 and the three-phase power driving module 105, and the three-phase inverter bridge 106 is also connected with the motor 2 to be operated through a harness plug 107. The number of the starting keys 102 of the parking actuator operation device 1 is at least two; the processor 103 includes at least two processing chips; the starting keys 102 are connected with the processing chips in a one-to-one correspondence manner; each processing chip stores parking control parameters of one motor model, and the parking control parameters stored by different processing chips are different. The parking actuator operation device 1 further comprises a current sensor 108, wherein the current sensor 108 is connected in series to a power supply loop of the three-phase inverter bridge 106 to the motor 2 to be operated, and an output end of the current sensor 108 is connected with the processor 103. The processor 103 is also connected to the encoder 22 and hall sensor 24 of the motor 2 to be operated via a harness plug 107, and is also connected to the three-phase winding 26 of the motor 2 to be operated via the harness plug 107. The parking actuator operation device 1 of the present application further includes a driving waveform input module 110, an output end of the driving waveform input module 110 is connected to the processor 103, and the driving waveform input module 110 includes a potentiometer and a serial port.

Next, the specific operation procedure of the parking actuator operating apparatus 1 includes: the device power switch 109 is closed and the dc power source 101 supplies power to the processor 103. The processor 103 gives the default zero position to the motor 2 to be operated when the dc voltage of the dc power source 101 is received by the processor 103.

By triggering the start button 102, a processing chip corresponding to the start button 102 in the processor 103 generates a three-phase driving waveform and a pulse width modulation signal according to the stored parking control parameter. The three-phase driving waveform corresponds to a waveform corresponding to a rotation angle required for driving the motor.

The voltage converter 104 converts the dc voltage supplied from the dc power supply 101 into a driving voltage matched with the motor 2 to be operated under the pulse width modulation signal of the processor 103, and outputs the driving voltage from the output terminal. The magnitude of the driving voltage can be adjusted by the voltage converter 104 according to different rotational speeds and different torques required by different types of motors. The three-phase power driving module 105 amplifies the three-phase driving waveform outputted by the processor 103 under the driving voltage supply, and further obtains an amplified signal.

The three-phase inverter bridge 106 receives an input of an amplified signal, and inverts a dc voltage supplied from the dc power supply 101 into an ac voltage under the driving of the amplified signal. The three-phase inverter bridge 106 is connected with the motor 2 to be operated through the wire harness plug 107, and controls the coil of the motor 2 to be operated to be electrified, so that the motor 2 to be operated is driven to rotate, and the motor is enabled to rotate from a parking position to a non-parking position or from the non-parking position to the parking position, so that the release or hanging of the electronic parking actuator is realized.

During the rotation of the motor 2 to be operated, the three-phase inverter bridge 106 outputs the detected current to the processor 103 to the current sensor 108 on the power supply circuit of the motor 2 to be operated, and the operating parameters of the encoder 22 and the hall sensor 24 of the motor 2 to be operated are also output to the processor 103 through the harness plug 107. The processor 103 corrects the three-phase driving waveform according to the above signals to realize current closed-loop control, speed feedback adjustment and position feedback adjustment, so that the motor 2 to be operated is precisely rotated by a specific angle.

In addition, the user can also adjust the magnitude of the pulse signal output to the processor 103 by driving the potentiometer and the serial port of the waveform input module 110, wherein the pulse signal is used for representing the rotation angle or the rotation speed and the rotation angle of the motor 2 to be operated which the user desires to drive. The processor 103 converts the pulse signal into a three-phase driving waveform, and repeats the above-described operation procedure to drive the motor 2 to be operated to rotate from the parking position to the non-parking position or from the non-parking position to the parking position, so as to release or hang in the electronic parking actuator.

Finally, the actual operation procedure of the parking actuator operating apparatus 1 includes: the harness plug 107 of the parking actuator operating apparatus 1 is connected to an interface of an electronic parking actuator on a faulty vehicle, and the apparatus power switch 109 is closed. The starting button 102 is triggered, or the potentiometer is manually adjusted, or the serial port is connected with a computer, so that a motor of the device for driving the electronic parking actuator rotates from a parking position to a non-parking position, or rotates from the non-parking position to the parking position, and release or hanging of the electronic parking actuator is realized.

In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "desired embodiments," and the like, means 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 utility model. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The parking actuator operating device is characterized by comprising a direct-current power supply, a starting key, a processor, a voltage converter, a three-phase power driving module, a three-phase inverter bridge and a wire harness plug;

the direct current power supply is used for supplying power to the processor;

the processor is connected with the direct-current power supply and the starting key, and generates and outputs a three-phase driving waveform and a pulse width modulation signal when the starting key is in a trigger state;

the voltage converter is connected with the direct current power supply and the processor, and is used for converting the direct current voltage provided by the direct current power supply into a driving voltage matched with a motor to be operated under the action of a pulse width modulation signal of the processor, and outputting the driving voltage from an output end;

the three-phase power driving module is connected with the processor and the voltage converter and is used for amplifying the three-phase driving waveform to obtain an amplified signal under the power supply of the driving voltage;

the three-phase inverter bridge is connected with the direct current power supply and the three-phase power driving module, the three-phase inverter bridge is further connected with the motor to be operated through the wire harness plug, and the three-phase inverter bridge is used for inverting the direct current voltage provided by the direct current power supply into alternating current voltage under the driving of the amplified signal so as to drive the motor to be operated to rotate from a parking position to a non-parking position or from the non-parking position to the parking position.

2. The parking actuator operation apparatus according to claim 1, wherein the number of the actuation keys is at least two; the processor comprises at least two processing chips; the starting keys are connected with the processing chip in a one-to-one correspondence manner; each processing chip stores parking control parameters of one motor model, and the parking control parameters stored by different processing chips are different.

3. The parking actuator operation apparatus according to claim 1, wherein said apparatus further comprises a current sensor;

the current sensor is connected in series on a power supply loop of the three-phase inverter bridge to the motor to be operated, the output end of the current sensor is connected with the processor, and the processor is further used for adjusting the three-phase driving waveform according to the current detected by the current sensor so as to inhibit torque pulsation of the motor to be operated.

4. The parking actuator operation apparatus according to claim 1, wherein the processor is configured to be connected with an encoder and a hall sensor of the motor to be operated through the harness plug;

the processor is used for acquiring the working parameters of the encoder and the working parameters of the Hall sensor of the motor to be operated, and determining the working parameters of the motor to be operated according to the working parameters of the encoder and the working parameters of the Hall sensor; the operation parameters comprise the rotation speed, the rotation angle and the rotation direction of the motor to be operated; the processor corrects the three-phase driving waveform according to the operation parameter.

5. The parking actuator operation apparatus according to claim 1, wherein the processor is further configured to be connected to a three-phase winding of a motor to be operated through a harness plug;

the processor is used for sampling the terminal voltage of the three-phase winding of the motor to be operated, carrying out zero-crossing detection on the counter electromotive force of the motor to be operated according to the sampled terminal voltage, and adjusting the three-phase driving waveform according to the zero-crossing detection result.

6. The parking actuator operation apparatus according to claim 1, wherein the processor gives a default zero position of the motor to be operated when receiving a direct-current voltage of the direct-current power supply.

7. The parking actuator operation apparatus according to claim 1, wherein said parking actuator operation apparatus further comprises an apparatus power switch;

the device power switch is connected in series on a common power supply circuit from the direct-current power supply to the processor, the voltage converter and the three-phase inverter bridge.

8. The parking actuator operation apparatus according to claim 1, further comprising a driving waveform input module;

the output end of the driving waveform input module is connected with the processor, and the driving waveform input module is used for outputting pulse signals; the pulse signal is used for representing the rotation angle of the motor to be operated, or the rotation speed and the rotation angle, which are expected to be driven by a user;

the processor is also configured to convert the pulse signal into a three-phase drive waveform.

9. The parking actuator operation apparatus according to claim 8, wherein the driving waveform input module includes a potentiometer for adjusting the pulse signal.

10. The parking actuator operation apparatus according to claim 8, wherein the driving waveform input module further includes a serial port;

the serial port is used for connecting a computer;

the computer is used for generating instruction data strings to the processor through the serial port;

the processor is also configured to convert the command data string into the three-phase drive waveform.