A method and device for over-temperature treatment of a steering motor

Abstract

The present invention relates to a method and device for over-temperature treatment of a steering motor, belonging to the technical field of electric temperature detection. Among them, the method includes obtaining the operating parameters of the vehicle within a preset time; the operating parameters may include the steering angle of the steering wheel and the motor temperature, so that the steering angle of the steering wheel can be judged. When the steering angle meets the preset steering angle condition, it is further judged whether the motor temperature reaches the first preset temperature value. If so, it means that the temperature of the steering motor is too high. In order to prevent false alarms, the duration of the motor temperature can be determined, and then the over-temperature treatment of the steering motor can be carried out according to the motor temperature and the duration, so as to prevent the temperature of the steering motor from being too high only for a moment, resulting in false alarms, reducing the operating economic losses of users caused by false alarms, and reducing the occurrence of traffic accidents.

Description

Technical Field

[0001] The present invention relates to the technical field of electric temperature detection, and particularly to an over-temperature processing method and device for a steering motor. Background Art

[0002] In a new energy electric drive system, the controller of a vehicle motor is its core component. In order to ensure the stable operation of the vehicle under various working conditions, it is necessary to detect the temperature of the motor.

[0003] During the actual operation of the whole vehicle, due to signal interference or instantaneous open circuit (short circuit) of the wiring harness plug-in of the steering motor temperature sensor, the steering motor will alarm and stop when the instantaneous temperature reaches the threshold. Generally, this kind of instantaneous temperature exceeding the threshold is a false alarm, which will cause economic losses to users' operations due to false alarms and also lead to traffic safety accidents.

[0004] Therefore, there is an urgent need to propose an over-temperature processing method and device for a steering motor to solve the technical problem that in the existing technology, the steering motor will alarm and stop when the instantaneous temperature reaches the threshold, resulting in economic losses to users' operations due to false alarms and leading to traffic safety accidents. Summary of the Invention

[0005] In view of this, it is necessary to provide an over-temperature processing method and device for a steering motor to solve the technical problem that in the existing technology, the steering motor will alarm and stop when the instantaneous temperature reaches the threshold, resulting in economic losses to users' operations due to false alarms and leading to traffic safety accidents.

[0006] To solve the above problems, the present invention provides an over-temperature processing method for a steering motor, including:

[0007] Obtain the operating parameters of the vehicle within a preset time; the operating parameters include the steering angle of the steering wheel and the motor temperature;

[0008] When the steering angle meets the preset steering angle condition, determine whether the motor temperature reaches the first preset temperature value;

[0009] If so, determine the duration of the motor temperature;

[0010] Perform over-temperature processing on the steering motor according to the motor temperature and the duration.

[0011] In a possible implementation manner, after obtaining the operating parameters of the vehicle within the preset time, it includes:

[0012] Obtain the cumulative steering angle value according to all the steering angles within the preset time;

[0013] Determine whether the cumulative rotation angle value is greater than or equal to a preset rotation angle limit value;

[0014] If so, determine that the rotation angle meets the preset rotation angle condition.

[0015] In a possible implementation, the over-temperature processing of the steering motor according to the motor temperature and the duration includes:

[0016] Determine whether the duration reaches a first preset time;

[0017] If so, perform a shutdown process on the steering motor;

[0018] If not, control the steering motor according to the duration.

[0019] In a possible implementation, the control of the steering motor according to the duration includes:

[0020] Determine whether the duration reaches a second preset time; the second preset time is less than the first preset time;

[0021] If so, perform an alarm process on the steering motor.

[0022] In a possible implementation, after the alarm process on the steering motor, it further includes:

[0023] Obtain the current motor temperature of the steering motor;

[0024] Determine whether the current motor temperature is less than a second preset temperature value; the second preset temperature value is less than the first preset temperature value;

[0025] If so, determine a new duration of the current motor temperature;

[0026] Control the steering motor according to the new duration.

[0027] In a possible implementation, the control of the steering motor according to the new duration includes:

[0028] Determine whether the new duration reaches the second preset time;

[0029] If so, control the steering motor to stop the alarm operation.

[0030] In a possible implementation, the operating parameters further include a fault status, and the method further includes:

[0031] When the fault state is an open - circuit fault or a short - circuit fault, and the fault duration exceeds the second preset time, an alarm process is performed on the steering motor.

[0032] In a possible implementation manner, after performing the alarm process on the steering motor when the fault state is an open - circuit fault or a short - circuit fault, and the fault duration exceeds the second preset time, the method further includes:

[0033] When the fault state is fault elimination, and the fault - elimination duration exceeds the second preset time, control the steering motor to stop the alarm operation.

[0034] In a possible implementation manner, the method further includes:

[0035] When the cumulative rotation angle value is less than the preset rotation - angle limit value, no over - temperature treatment is performed on the steering motor.

[0036] On the other hand, the present invention further provides a device for over - temperature treatment of a steering motor, including:

[0037] A parameter acquisition module, configured to acquire the operating parameters of the vehicle within a preset time; the operating parameters include the rotation angle of the steering wheel and the motor temperature;

[0038] A temperature judgment module, configured to judge whether the motor temperature reaches a first preset temperature value when the rotation angle meets a preset rotation - angle condition; if so, determine the duration of the motor temperature;

[0039] An over - temperature treatment module, configured to perform over - temperature treatment on the steering motor according to the motor temperature and the duration.

[0040] The beneficial effects of the present invention are as follows: acquiring the operating parameters of the vehicle within a preset time; the operating parameters can include the rotation angle of the steering wheel and the motor temperature, so that the rotation angle of the steering wheel can be judged. When the rotation angle of the steering wheel meets the preset rotation - angle condition, then judge whether the motor temperature reaches the first preset temperature value. If so, it means that the temperature of the steering motor is too high. In order to prevent false alarms, the duration of the motor temperature can be determined, and then over - temperature treatment can be performed on the steering motor according to the motor temperature and the duration, so as to prevent the temperature of the steering motor from being too high only for a moment, thus avoiding false alarms, reducing the operating economic losses of users caused by false alarms, and reducing the occurrence of traffic accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic flowchart of an embodiment of the method for over - temperature treatment of a steering motor provided by the present invention;

[0042] Figure 2 For the present inventionFigure 1 A schematic diagram of an embodiment process after step S101;

[0043] Figure 3 For the present invention Figure 1 A schematic diagram of an embodiment process of step S103 in the present invention;

[0044] Figure 4 A schematic diagram of an embodiment process for judging the current motor temperature provided by the present invention;

[0045] Figure 5 A schematic diagram of an embodiment structure of an over-temperature processing device for a steering motor provided by the present invention;

[0046] Figure 6 A schematic diagram of an embodiment structure of an electronic device provided by the present invention. Specific embodiments

[0047] The following will specifically describe the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0048] As Figure 1 shown, a specific embodiment of the present invention discloses an over-temperature processing method for a steering motor, including:

[0049] S101. Obtain the operating parameters of the vehicle within a preset time; the operating parameters include the steering angle of the steering wheel and the motor temperature;

[0050] S102. When the steering angle meets the preset steering angle condition, judge whether the motor temperature reaches the first preset temperature value; if so, determine the duration of the motor temperature;

[0051] S103. Perform over-temperature processing on the steering motor according to the motor temperature and the duration.

[0052] Electric steering principle of pure electric commercial vehicles: First, the driver operates the steering wheel, driving the steering motor to generate power. The power passes through the rotating gear, opening the flow valve, extracting hydraulic fluid from the oil cylinder, and then pushing the hydraulic fluid through the hydraulic pump to the high-pressure oil pipe. The power valve restricts the hydraulic fluid pressure and further pushes the hydraulic fluid into the oil cylinder in the steering system, thus changing the forward direction of the wheels and achieving steering. This system usually monitors the rotation of the steering wheel through sensors and uses an electric assist system to provide additional steering force, enabling the driver to control the vehicle more easily. The electric steering pump is usually combined with the vehicle's steering system and tire direction control system to ensure the vehicle's stability and handling performance. Different brands and models of commercial vehicles may use different types of steering motors, but their basic functions are similar, that is, to provide steering assist force for the driver and achieve precise adjustment of the steering force through an electronic control system.

[0053] The electric steering motor of a commercial vehicle operates under high loads. For example, when frequently making sharp turns or continuously driving the steering wheel in congested traffic conditions, a large amount of heat will be generated in the steering motor during the steering process, resulting in an increase in the temperature of the steering motor. Considering the protection of the steering motor, the steering motor has a temperature sensor to monitor the motor temperature in real time. If the motor temperature exceeds the standard, the motor will stop working. Once the motor stops working, the vehicle will experience abnormal and heavy steering.

[0054] The embodiments of the present invention can be applied to the steering motor system of a vehicle to control the temperature of the steering motor. The operating parameters of the vehicle within a preset time can be obtained through a terminal device, or by other methods, which are not limited in the embodiments of the present invention. And the preset time can be a time that has occurred. For example, if it is 1 minute before the current time, then the time from now to 1 minute is the preset time, and it can be specifically set according to the actual situation. A steering wheel sensor can be installed at the steering wheel of the vehicle, which can be used to detect the steering angle of the steering wheel. A temperature sensor can be installed in the steering motor, which can be used to detect the motor temperature in the steering motor. The preset steering angle condition and the first preset temperature value can be set according to the actual situation. When the steering angle meets the preset steering angle condition and the motor temperature reaches the first preset temperature value, within the preset time, for example, 1 minute, which can be pushed forward from the current time until it is detected that at the first time, the motor temperature is less than the first preset temperature value, then the time from the second time after the first time when the first preset temperature value is reached to the current time can be determined as the duration of the motor temperature. Furthermore, over-temperature processing can be performed on the steering motor according to the motor temperature and the duration. The over-temperature processing can include operations such as shutdown, alarm, and stop alarm. The first preset temperature value can be 140°C.

[0055] Compared with the prior art, the present embodiment provides obtaining the operating parameters of a vehicle within a preset time; the operating parameters may include the steering angle of the steering wheel and the motor temperature. Thus, the steering angle of the steering wheel can be judged. When the steering angle meets the preset steering angle condition, it is then judged whether the motor temperature reaches the first preset temperature value. If so, it indicates that the temperature of the steering motor is too high. To prevent false alarms, the duration of the motor temperature can be determined, and then the over-temperature treatment of the steering motor can be carried out according to the motor temperature and the duration, so as to prevent the temperature of the steering motor from being too high only for a moment, thereby causing false alarms, reducing the operating economic losses of users caused by false alarms, and reducing the occurrence of traffic accidents.

[0056] In some embodiments of the present invention, as Figure 2 shown, after step S101, it includes:

[0057] S201. Obtain the cumulative steering angle value according to all the steering angles within the preset time;

[0058] S202. Judge whether the cumulative steering angle value is greater than or equal to the preset steering angle limit value;

[0059] S203. If so, determine that the steering angle meets the preset steering angle condition.

[0060] In a specific embodiment of the present invention, after obtaining the steering angle within the preset time, all the steering angles can be calculated to obtain the cumulative steering angle value. The specific calculation process can be set according to the actual situation, and the embodiments of the present invention do not limit this here; then it can be judged whether the cumulative steering angle value is greater than or equal to the preset steering angle limit value. The specific preset steering angle limit value can be set according to the actual situation, and the embodiments of the present invention do not limit this here; if so, it can be determined that the steering angle meets the preset steering angle condition.

[0061] In some embodiments of the present invention, the method further includes:

[0062] When the cumulative steering angle value is less than the preset steering angle limit value, no over-temperature treatment is performed on the steering motor.

[0063] In a specific embodiment of the present invention, if the cumulative steering angle value is less than the preset steering angle limit value, even if the motor temperature reaches 140 °C, the steering motor does not stop.

[0064] In some embodiments of the present invention, as Figure 3 shown, step S103 includes:

[0065] S301. Judge whether the duration reaches the first preset time;

[0066] S302. If so, perform a shutdown process on the steering motor;

[0067] S303. If not, control the steering motor according to the duration.

[0068] In a specific embodiment of the present invention, after obtaining the duration of the motor temperature, it is possible to determine whether the duration reaches a first preset time. For example, if the duration is 35 seconds and the first preset time is 30 seconds, it can be determined that the duration reaches the first preset time, and then the steering motor can be shut down. If the duration is 15 seconds, the duration does not reach the first preset time, and then the steering motor is controlled according to the duration.

[0069] In some embodiments of the present invention, step S303 includes:

[0070] Judge whether the duration reaches a second preset time; the second preset time is less than the first preset time;

[0071] If so, perform an alarm process on the steering motor.

[0072] In a specific embodiment of the present invention, when the duration does not reach the first preset time, it is possible to judge whether the duration reaches the second preset time. The second preset time is less than the first preset time. For example, the first preset time is 30 seconds, the second preset time is 10 seconds, and the duration is 15 seconds. Then the duration of 15 seconds is less than the first preset time and greater than the second preset time, so an alarm process can be performed on the steering motor. The alarm process is used to remind the driver, and "steering motor over-temperature fault" and other content are displayed on the instrument for the over-temperature of the steering motor.

[0073] In some embodiments of the present invention, as Figure 4 shown, after performing the alarm process on the steering motor, it further includes:

[0074] S401. Obtain the current motor temperature of the steering motor;

[0075] S402. Judge whether the current motor temperature is less than a second preset temperature value; the second preset temperature value is less than the first preset temperature value;

[0076] S403. If so, determine the new duration of the current motor temperature;

[0077] S404. Control the steering motor according to the new duration.

[0078] In a specific embodiment of the present invention, after performing an alarm process on the steering motor, the current motor temperature of the steering motor can be obtained in real time through a temperature sensor, and then the current motor temperature can be judged in real time to determine whether the current motor temperature is less than a second preset temperature value, where the second preset temperature value is less than the first preset temperature value. For example, the first preset temperature value is 140 °C and the second preset temperature value is 130 °C. If the temperature of the steering motor starts to drop after a period of shutdown or other operations, and if the current motor temperature is less than 130 °C, the duration can be obtained again through the process of obtaining the duration in the above process, that is, the new duration. The specific process is not repeated in this embodiment of the present invention. Thus, the new duration when the current motor temperature is less than 130 °C can be obtained, and then the steering motor can be controlled according to the new duration.

[0079] In some embodiments of the present invention, step S404 includes:

[0080] Judging whether the new duration reaches a second preset time;

[0081] If so, control the steering motor to stop the alarm operation.

[0082] In a specific embodiment of the present invention, it can be determined whether the new duration reaches the second preset time, that is, to judge whether the duration exceeds 10 seconds. If so, it means that the motor temperature has dropped for a period of time and the alarm can be stopped.

[0083] In some embodiments of the present invention, the operating parameters further include a fault status, and the method further includes:

[0084] When the fault status is an open - circuit fault or a short - circuit fault, and the fault duration exceeds the second preset time, perform an alarm process on the steering motor.

[0085] In a specific embodiment of the present invention, the operating parameters may further include a fault status. After obtaining the operating parameters, it can be judged whether the temperature sensor has a fault through the fault status. If the temperature sensor has an open - circuit fault or a short - circuit fault, and the fault duration exceeds the second preset time, for example, 10 seconds, an alarm process is performed on the steering motor.

[0086] In some embodiments of the present invention, when the fault status is an open - circuit fault or a short - circuit fault, and the fault duration exceeds the second preset time, after performing an alarm process on the steering motor, it further includes:

[0087] When the fault status is fault elimination, and the fault elimination duration exceeds the second preset time, control the steering motor to stop the alarm operation.

[0088] In a specific embodiment of the present invention, after the driver eliminates the fault, the temperature sensor can be updated to indicate that the fault has been eliminated. When the fault status is that the fault has been eliminated, the duration of the fault elimination can be obtained again. If the duration of the fault elimination exceeds a second preset time, for example, 10 seconds, it means that the temperature sensor is stable, and then the steering motor can be controlled to stop the alarm operation.

[0089] To better implement the over-temperature processing method of the steering motor in the embodiments of the present invention, correspondingly, based on the over-temperature processing method of the steering motor, the embodiments of the present invention also provide an over-temperature processing device for the steering motor, as Figure 5 shown, the over-temperature processing device 500 for the steering motor includes:

[0090] A parameter acquisition module 501, configured to acquire the operating parameters of the vehicle within a preset time; the operating parameters include the steering angle of the steering wheel and the motor temperature;

[0091] A temperature judgment module 502, configured to judge whether the motor temperature reaches a first preset temperature value when the steering angle meets the preset steering angle condition; if so, determine the duration of the motor temperature;

[0092] An over-temperature processing module 503, configured to perform over-temperature processing on the steering motor according to the motor temperature and the duration.

[0093] The over-temperature processing device 500 for the steering motor provided in the above embodiments can implement the technical solutions described in the above embodiments of the over-temperature processing method of the steering motor. The specific implementation principles of the above modules or units can be referred to the corresponding content in the above embodiments of the over-temperature processing method of the steering motor, and will not be elaborated here.

[0094] As Figure 6 shown, the present invention also correspondingly provides an electronic device 600. The electronic device 600 includes a processor 601, a memory 602, and a display 603. Figure 6 Only some components of the electronic device 600 are shown, but it should be understood that it is not required to implement all the shown components, and more or fewer components can be alternatively implemented.

[0095] The memory 602 can be an internal storage unit of the electronic device 600 in some embodiments, such as the hard disk or memory of the electronic device 600. The memory 602 can also be an external storage device of the electronic device 600 in other embodiments, such as a plug-in hard disk equipped on the electronic device 600, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc.

[0096] Further, the memory 602 may also include both the internal storage unit of the electronic device 600 and external storage devices. The memory 602 is used to store the application software installed in the electronic device 600 and various types of data.

[0097] In some embodiments, the processor 601 may be a central processing unit (CPU), a microprocessor, or other data processing chips, and is used to run the program code stored in the memory 602 or process data, such as the over-temperature processing method for the steering motor in the present invention.

[0098] In some embodiments, the display 603 may be an LED display, a liquid crystal display, a touch liquid crystal display, and an OLED (Organic Light-Emitting Diode) toucher, etc. The display 603 is used to display the information of the electronic device 600 and to display a visual user interface. The components 601-603 of the electronic device 600 communicate with each other through the system bus.

[0099] In some embodiments of the present invention, when the processor 601 executes the over-temperature processing program for the steering motor in the memory 602, the following steps may be implemented:

[0100] Obtain the operating parameters of the vehicle within a preset time; the operating parameters include the steering angle of the steering wheel and the motor temperature;

[0101] When the steering angle meets the preset steering angle condition, determine whether the motor temperature reaches the first preset temperature value;

[0102] If so, determine the duration of the motor temperature;

[0103] Perform over-temperature processing on the steering motor according to the motor temperature and the duration.

[0104] It should be understood that when the processor 601 executes the over-temperature processing program for the steering motor in the memory 602, in addition to the above functions, other functions may also be implemented. For specific details, reference may be made to the description of the corresponding method embodiments above.

[0105] Furthermore, the embodiments of the present invention do not specifically limit the type of the mentioned electronic device 600. The electronic device 600 can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop, or other portable electronic devices. Exemplary embodiments of the portable electronic device include, but are not limited to, portable electronic devices running IOS, android, microsoft, or other operating systems. The above portable electronic devices can also be other portable electronic devices, such as a laptop with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 600 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0106] Correspondingly, an embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium is used to store computer-readable programs or instructions. When the programs or instructions are executed by a processor, the method steps or functions of the over-temperature processing method of the steering motor provided by the above method embodiments can be implemented.

[0107] Those skilled in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware (such as a processor, a controller, etc.) through a computer program. The computer program can be stored in a computer-readable storage medium. Among them, the computer-readable storage medium is a magnetic disk, an optical disk, a read-only memory, or a random access memory, etc.

[0108] The above has introduced in detail the over-temperature processing method and device of the steering motor provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A method for handling over-temperature of a steering motor, characterized in that: include: Obtaining operating parameters of the vehicle within a preset time; the operating parameters include a steering wheel angle and a motor temperature; Obtaining a cumulative turning angle value according to all turning angles within the preset time; Determining whether the accumulated turning angle value is greater than or equal to a preset turning angle limit value; If yes, determining that the turning angle satisfies a preset turning angle condition; When the rotation angle satisfies a preset rotation angle condition, determining whether the motor temperature reaches a first preset temperature value; If so, determining the duration of the motor temperature; An over-temperature process is performed on the steering motor according to the motor temperature and the duration.

2. The steering motor over-temperature treatment method according to claim 1, characterized in that: The over-temperature treatment of the steering motor according to the motor temperature and the duration includes: Determining whether the duration reaches a first preset time; If yes, shut down the steering motor; If not, the steering motor is controlled according to the duration.

3. The steering motor over-temperature treatment method according to claim 2, characterized in that: The controlling the steering motor according to the duration includes: Determine whether the duration reaches a second preset time; the second preset time is less than the first preset time; If so, an alarm is performed on the steering motor.

4. The method for handling over-temperature of a steering motor according to claim 3, characterized in that: After the steering motor is alarmed, the method further includes: Acquiring the current motor temperature of the steering motor; Determine whether the current motor temperature is less than a second preset temperature value; the second preset temperature value is less than the first preset temperature value; If so, determining a new duration of said current motor temperature; The steering motor is controlled according to the new duration.

5. The method for handling over-temperature of a steering motor according to claim 4, characterized in that: The controlling the steering motor according to the new duration includes: Determining whether the new duration reaches the second preset time; If so, the steering motor is controlled to stop the alarm operation.

6. The method for handling over-temperature of a steering motor according to claim 3, characterized in that: The operating parameters also include a fault state, and the method further includes: When the fault state is an open circuit fault or a short circuit fault, and the fault duration exceeds the second preset time, an alarm process is performed on the steering motor.

7. The method for handling over-temperature of a steering motor according to claim 6, characterized in that: When the fault state is an open circuit fault or a short circuit fault, and the fault duration exceeds the second preset time, after the steering motor is alarmed, the method further includes: When the fault state is fault elimination, and the duration of fault elimination exceeds the second preset time, the steering motor is controlled to stop the alarm operation.

8. The method for handling over-temperature of a steering motor according to claim 1, characterized in that: The method further comprises: When the accumulated rotation angle value is less than the preset rotation angle limit value, the steering motor is not subjected to over-temperature processing.

9. A steering motor over-temperature treatment device, characterized in that: include: A parameter acquisition module, used to acquire the operating parameters of the vehicle within a preset time; the operating parameters include the steering wheel angle and the motor temperature; The temperature judgment module is used to obtain a cumulative rotation angle value according to all rotation angles within the preset time; judge whether the cumulative rotation angle value is greater than or equal to a preset rotation angle limit value; if so, determine that the rotation angle meets the preset rotation angle condition; if the rotation angle meets the preset rotation angle condition, judge whether the motor temperature reaches a first preset temperature value; if so, determine the duration of the motor temperature; An over-temperature processing module is used to perform over-temperature processing on the steering motor according to the motor temperature and the duration.

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