A control method, system, device and storage medium of an electromagnetic brake

Abstract

The application discloses a control method, system and device of an electromagnetic brake and a storage medium, and relates to the technical field of vehicles. The method comprises the following steps: in response to a brake instruction, providing a first current to a first sliding electromagnet and a second current to a second sliding electromagnet; acquiring a first distance between the first sliding electromagnet and a first fixed electromagnet through a first sensor; acquiring a second distance between the second sliding electromagnet and a second fixed electromagnet through a second sensor; comparing the first distance and the second distance to obtain a comparison result; and if the comparison result represents that the absolute value of the difference between the first distance and the second distance is greater than or equal to a first preset threshold, adjusting the first current or the second current to make the absolute value of the difference less than the first preset threshold. In the case that the difference between the first distance and the second distance is relatively large, the friction force applied to the two sides of the brake disc is made closer through the change of the driving current, and the service life of the brake disc can be prolonged.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a control method, system, device and storage medium for an electromagnetic brake. Background Technology

[0002] Currently, vehicles are usually equipped with electromagnetic brakes. When the user presses the brake pedal, the electromagnetic brake is energized, and the friction pads rub against the brake disc, thereby reducing the vehicle's speed and achieving a braking effect.

[0003] However, due to the structural problems of the electromagnetic brake itself, the friction force generated by the friction pads on both sides of the brake disc may be inconsistent, which accelerates the damage to the brake disc and reduces its service life. Summary of the Invention

[0004] This application provides a control method, system, device, and storage medium for an electromagnetic brake, which can extend the service life of the brake disc.

[0005] To achieve the above objectives, this application adopts the following technical solution: In a first aspect, this application provides a control method for an electromagnetic brake, the electromagnetic brake comprising a caliper, a first retaining ring, a second retaining ring, a first friction plate, a second friction plate, a first electromagnet fixing housing, a second electromagnet fixing housing, a first push rod, a second push rod, a first fixed electromagnet, a second fixed electromagnet, a first sliding electromagnet, a second sliding electromagnet, a first return spring, and a second return spring. The first sliding electromagnet is connected to the first friction plate via the first push rod, and the second sliding electromagnet is connected to the second friction plate via the second push rod; The first end of the first return spring is connected to the first sliding electromagnet, the second end of the first return spring is connected to the first fixed electromagnet, the first end of the second return spring is connected to the second sliding electromagnet, the second end of the second return spring is connected to the second fixed electromagnet, the first return spring is sleeved on the first push rod, and the second return spring is sleeved on the second push rod. The first sliding electromagnet, the first return spring, and the first fixed electromagnet are housed within the first electromagnet housing; the second sliding electromagnet, the second return spring, and the second fixed electromagnet are housed within the second electromagnet housing. The first retaining ring is used to limit the vertical displacement of the first friction piece, and the second retaining ring is used to limit the vertical displacement of the second friction piece; The first friction plate and the second friction plate are used to rub against the brake disc; The first end of the caliper is connected to the first fixed electromagnet, and the second end of the caliper is connected to the second fixed electromagnet. The method includes: In response to a braking command, a first current is supplied to the first sliding electromagnet and a second current is supplied to the second sliding electromagnet; The first distance between the first sliding electromagnet and the first fixed electromagnet is obtained by the first sensor, and the second distance between the second sliding electromagnet and the second fixed electromagnet is obtained by the second sensor. Compare the first distance with the second distance to obtain the comparison result; If the comparison result indicates that the absolute value of the difference between the first distance and the second distance is greater than or equal to a first preset threshold, the first current or the second current is adjusted so that the absolute value of the difference is less than the first preset threshold.

[0006] Optionally, adjusting the first current or the second current includes: If the first distance is greater than the second distance, then increase the second current; or, If the first distance is less than the second distance, then increase the first current.

[0007] Optionally, the method further includes: Based on a pre-defined first mapping relationship between the difference and the difference adjustment coefficient, the first adjustment coefficient corresponding to the absolute value of the difference is obtained; The adjustment of the first current or the second current includes: The first current or the second current is adjusted according to the first adjustment coefficient.

[0008] Optionally, after adjusting the first current or the second current, the method further includes: Obtain the target number of braking attempts and the target mileage of the vehicle; Based on the pre-set second mapping relationship between the number of braking operations, the mileage traveled, and the aging adjustment coefficient, a second adjustment coefficient corresponding to the target number of braking operations and the target mileage traveled is obtained; The first current and the second current are adjusted according to the second adjustment coefficient.

[0009] Optionally, adjusting the first current and the second current according to the second adjustment coefficient includes: According to the second adjustment coefficient, the first current and the second current are reduced respectively.

[0010] Optionally, the first sensor and the second sensor are ultrasonic ranging sensors and infrared ranging sensors.

[0011] Secondly, this application provides a control system for an electromagnetic brake, the electromagnetic brake including a caliper, a first retaining ring, a second retaining ring, a first friction plate, a second friction plate, a first electromagnet fixing housing, a second electromagnet fixing housing, a first push rod, a second push rod, a first fixed electromagnet, a second fixed electromagnet, a first sliding electromagnet, a second sliding electromagnet, a first return spring, and a second return spring. The first sliding electromagnet is connected to the first friction plate via the first push rod, and the second sliding electromagnet is connected to the second friction plate via the second push rod; The first end of the first return spring is connected to the first sliding electromagnet, the second end of the first return spring is connected to the first fixed electromagnet, the first end of the second return spring is connected to the second sliding electromagnet, the second end of the second return spring is connected to the second fixed electromagnet, the first return spring is sleeved on the first push rod, and the second return spring is sleeved on the second push rod. The first sliding electromagnet, the first return spring, and the first fixed electromagnet are housed within the first electromagnet housing; the second sliding electromagnet, the second return spring, and the second fixed electromagnet are housed within the second electromagnet housing. The first retaining ring is used to limit the vertical displacement of the first friction piece, and the second retaining ring is used to limit the vertical displacement of the second friction piece; The first friction plate and the second friction plate are used to rub against the brake disc; The first end of the caliper is connected to the first fixed electromagnet, and the second end of the caliper is connected to the second fixed electromagnet. The system includes: A response module is used to provide a first current to the first sliding electromagnet and a second current to the second sliding electromagnet in response to a braking command; The acquisition module is used to acquire a first distance between the first sliding electromagnet and the first fixed electromagnet through a first sensor, and to acquire a second distance between the second sliding electromagnet and the second fixed electromagnet through a second sensor; The comparison module is used to compare the first distance with the second distance to obtain the comparison result; The control module is configured to adjust the first current or the second current so that the absolute value of the difference between the first distance and the second distance is less than the first preset threshold if the comparison result indicates that the absolute value of the difference is greater than or equal to a first preset threshold.

[0012] Optionally, the control module is specifically configured to: increase the second current if the first distance is greater than the second distance; or, increase the first current if the first distance is less than the second distance.

[0013] Optionally, the acquisition module is further configured to acquire the first adjustment coefficient corresponding to the absolute value of the difference based on a pre-set first mapping relationship between the difference and the difference adjustment coefficient; The control module is specifically used to adjust the first current or the second current according to the first adjustment coefficient.

[0014] Optionally, the acquisition module is further configured to acquire the target number of braking actions and the target mileage of the vehicle; and to acquire a second adjustment coefficient corresponding to the target number of braking actions and the target mileage based on a pre-set second mapping relationship between the number of braking actions, the mileage and the aging adjustment coefficient. The control module is further configured to adjust the first current and the second current according to the second adjustment coefficient.

[0015] Optionally, the control module is specifically used to reduce the first current and the second current according to the second adjustment coefficient.

[0016] Optionally, the first sensor and the second sensor are ultrasonic ranging sensors and infrared ranging sensors.

[0017] Thirdly, this application provides a computing device, including a memory and a processor; The memory stores one or more computer programs, the one or more computer programs including instructions; when the instructions are executed by the processor, the computing device performs the method as described in any one of the first aspects.

[0018] Fourthly, this application provides a computer-readable storage medium for storing a computer program for performing the method as described in any one of the first aspects.

[0019] As can be seen from the above technical solution, this application has at least the following beneficial effects: In this application, the electromagnetic brake includes a caliper, a first retaining ring, a second retaining ring, a first friction plate, a second friction plate, a first electromagnet mounting housing, a second electromagnet mounting housing, a first push rod, a second push rod, a first fixed electromagnet, a second fixed electromagnet, a first sliding electromagnet, a second sliding electromagnet, a first return spring, and a second return spring. The first sliding electromagnet is connected to the first friction plate via the first push rod, and the second sliding electromagnet is connected to the second friction plate via the second push rod. The first end of the first return spring is connected to the first sliding electromagnet, the second end of the first return spring is connected to the first fixed electromagnet, and the first end of the second return spring is connected to the second sliding electromagnet. The second end of the caliper is connected to the second fixed electromagnet. The first return spring is sleeved on the first push rod, and the second return spring is sleeved on the second push rod. The first sliding electromagnet, the first return spring, and the first fixed electromagnet are built into the first electromagnet fixing housing. The second sliding electromagnet, the second return spring, and the second fixed electromagnet are built into the second electromagnet fixing housing. The first retaining spring is used to limit the vertical displacement of the first friction plate, and the second retaining spring is used to limit the vertical displacement of the second friction plate. The first friction plate and the second friction plate are used to rub against the brake disc. The first end of the caliper is connected to the first fixed electromagnet, and the second end of the caliper is connected to the second fixed electromagnet.

[0020] The method includes: responding to a braking command by providing a first current to a first sliding electromagnet and a second current to a second sliding electromagnet; acquiring a first distance between the first sliding electromagnet and a first fixed electromagnet using a first sensor; acquiring a second distance between the second sliding electromagnet and a second fixed electromagnet using a second sensor; comparing the first distance and the second distance to obtain a comparison result; if the comparison result indicates that the absolute value of the difference between the first distance and the second distance is greater than or equal to a first preset threshold, adjusting the first current or the second current to make the absolute value of the difference less than the first preset threshold. Therefore, in this method, when the difference between the first distance and the second distance is large, by changing the driving current, the first distance and the second distance are made closer, thereby making the frictional forces applied to both sides of the brake disc closer, and thus extending the service life of the brake disc.

[0021] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0022] Figure 1 A schematic diagram of an electromagnetic brake provided in an embodiment of this application; Figure 2 A flowchart illustrating a control method for an electromagnetic brake provided in this application embodiment; Figure 3 A schematic diagram of a control system for an electromagnetic brake provided in an embodiment of this application; Figure 4 This is a schematic diagram of a computing device provided in an embodiment of this application. Detailed Implementation

[0023] The terms "first," "second," and "third," etc., used in this application specification and accompanying drawings are used to distinguish different objects, not to limit a specific order.

[0024] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0025] like Figure 1 As shown in the figure, this is a structural schematic diagram of an electromagnetic brake provided in an embodiment of this application. The electromagnetic brake includes: a caliper 10, a first retaining spring 21, a second retaining spring 22, a first friction plate 31, a second friction plate 32, a first electromagnet fixing housing 41, a second electromagnet fixing housing 42, a first push rod 51, a second push rod 52, a first fixed electromagnet 61, a second fixed electromagnet 62, a first sliding electromagnet 71, a second sliding electromagnet 72, a first return spring 81, and a second return spring 82.

[0026] The first sliding electromagnet 71 is connected to the first friction plate 31 via the first push rod 51, and the second sliding electromagnet 72 is connected to the second friction plate 32 via the second push rod 52. The first end of the first return spring 81 is connected to the first sliding electromagnet 71, and the second end of the first return spring 81 is connected to the first fixed electromagnet 61. The first return spring 81 is fitted onto the first push rod 51. The first end of the second return spring 82 is connected to the second sliding electromagnet 72, and the second end of the second return spring 82 is connected to the second fixed electromagnet 62. The second return spring 82 is fitted onto the second push rod 52.

[0027] The first sliding electromagnet 71, the first return spring 81, and the first fixed electromagnet 61 are housed within the first electromagnet fixing housing 41. The second sliding electromagnet 72, the second return spring 82, and the second fixed electromagnet 62 are housed within the second electromagnet fixing housing 42. The first retaining spring 21 is used to limit the vertical displacement of the first friction plate 31, and the second retaining spring 22 is used to limit the vertical displacement of the second friction plate 32. The first friction plate 31 and the second friction plate 32 are used to rub against the brake disc 90. The first end of the caliper 10 is connected to the first fixed electromagnet 61, and the second end of the caliper 10 is connected to the second fixed electromagnet 62.

[0028] The following is combined Figure 1 The electromagnetic brake described herein is a control method for the electromagnetic brake provided in the embodiments of this application. This method can be executed by a vehicle or by a controller inside the vehicle; this application does not specifically limit the executing entity of the method. For ease of understanding, the method is described below from the perspective of a vehicle.

[0029] like Figure 2 As shown, this figure is a flowchart of a control method for an electromagnetic brake provided in an embodiment of this application. The method includes: S201. In response to a braking command, the vehicle provides a first current to the first sliding electromagnet and a second current to the second sliding electromagnet.

[0030] Braking commands can be triggered by the user or automatically by the vehicle. In some examples, the user can trigger a braking command by pressing the brake pedal, while the vehicle can trigger a braking command through active braking technology.

[0031] After the vehicle receives a braking command, it supplies a first current to the first sliding electromagnet 71 and a second current to the second sliding electromagnet 72. When the first sliding electromagnet 71 is energized, it attracts the first fixed electromagnet 61, compressing the first return spring 81. This, in turn, pushes the first friction plate 31 to press against the brake disc 90 via the first push rod 51. Similarly, when the second sliding electromagnet 72 is energized, it attracts the second fixed electromagnet 62, compressing the second return spring 82. This, in turn, pushes the second friction plate 32 to press against the brake disc 90 via the second push rod 52.

[0032] During the process of the first friction pad 31 and the second friction pad 32 pressing the brake disc 90, the friction between the first friction pad 31 and the second friction pad 21 and the brake disc 90 increases, thereby reducing the vehicle's speed and achieving the effect of deceleration and braking.

[0033] S202, the vehicle obtains a first distance between the first sliding electromagnet and the first fixed electromagnet through the first sensor, and obtains a second distance between the second sliding electromagnet and the second fixed electromagnet through the second sensor.

[0034] The first sensor and the second sensor can be either an ultrasonic ranging sensor or an infrared ranging sensor. In some examples, when the first sensor is an ultrasonic ranging sensor, it can be disposed on the first side of the first fixed electromagnet 61, which is opposite to the first sliding electromagnet 71. When the second sensor is an ultrasonic ranging sensor, it can be disposed on the first side of the second fixed electromagnet 62, which is opposite to the second sliding electromagnet 72.

[0035] After providing driving current to the first sliding electromagnet 71 and the second sliding electromagnet 72, the first distance between the first sliding electromagnet 71 and the first fixed electromagnet 61 can be obtained through the first sensor, and the second distance between the second sliding electromagnet 72 and the second fixed electromagnet 62 can be obtained through the second sensor.

[0036] S203. The vehicle is compared with the first distance and the second distance to obtain the comparison result.

[0037] After obtaining the first distance and the second distance, the first distance and the second distance can be compared to obtain the comparison result.

[0038] Specifically, the difference between the first distance and the second distance can be calculated first to obtain the absolute value of the difference. Then, the absolute value of the difference can be compared with the first preset threshold to obtain the comparison result.

[0039] S204. If the comparison result indicates that the absolute value of the difference between the first distance and the second distance is greater than or equal to the first preset threshold, the vehicle adjusts the first current or the second current so that the absolute value of the difference is less than the first preset threshold.

[0040] If the comparison result indicates that the absolute value of the difference between the first distance and the second distance is greater than or equal to the first preset threshold, it indicates that the frictional force generated by the first friction pad 31 on the brake disc 90 is inconsistent with the frictional force generated by the second friction pad 32 on the brake disc 90. At this time, the vehicle needs to adjust the frictional force on both sides. The vehicle can adjust the first current or the second current to make the absolute value of the difference less than the first preset threshold, thereby achieving the purpose of adjusting the frictional force on both sides of the brake disc 90 to be approximately consistent.

[0041] In some embodiments, if the first distance is greater than the second distance, the second current is increased. When the first distance is greater than the second distance, it indicates that the frictional force generated by the first friction plate 31 on the brake disc 90 is greater than the frictional force generated by the second friction plate 32 on the brake disc 90. Therefore, it is necessary to increase the current supplied to the second sliding electromagnet 72 to increase the frictional force generated by the second friction plate 32 on the brake disc 90, so that the frictional forces on both sides of the brake disc are approximately the same.

[0042] If the first distance is less than the second distance, the first current is increased. When the first distance is less than the second distance, it means that the friction force generated by the first friction plate 31 on the brake disc 90 is less than the friction force generated by the second friction plate 32 on the brake disc 90. Therefore, it is necessary to increase the current supplied to the first sliding electromagnet 71, thereby increasing the friction force generated by the first friction plate 31 on the brake disc 90, so that the friction forces on both sides of the brake disc are approximately the same.

[0043] In some embodiments, a first mapping relationship between the difference and the difference adjustment coefficient can be preset. Subsequently, the first adjustment coefficient corresponding to the absolute value of the difference can be obtained directly based on the preset first mapping relationship, and then the first current or the second current can be adjusted according to the first adjustment coefficient.

[0044] In some embodiments, a second mapping relationship between the number of braking operations, mileage, and aging adjustment coefficient can be preset. The method further includes obtaining a target number of braking operations (e.g., the total number of braking operations of the vehicle) and a target mileage (e.g., the total mileage of the vehicle), and then directly obtaining a second adjustment coefficient corresponding to the target number of braking operations and the target mileage based on the preset second mapping relationship. The first current and the second current are then adjusted using this second adjustment coefficient.

[0045] In this embodiment, an aging adjustment coefficient is used to reduce the error caused by the aging of the first return spring 81 and the second return spring 82. After the first return spring 81 and the second return spring 82 age, the spring force weakens. At this time, if the first current and the second current are still used to power the first sliding electromagnet 71 and the second sliding electromagnet 72, the friction force generated by the first friction plate 31 and the second friction plate 32 on the brake disc will increase, giving the user a feeling of sudden braking, and will also affect the life of the brake disc. In this embodiment, the second adjustment coefficient is used to reduce the first current and the second current respectively, thereby reducing the magnetic force of the first sliding electromagnet 71 and the second sliding electromagnet 72, and thus reducing the impact of spring aging on the life of the brake disc and the user experience.

[0046] The embodiments of this application have the following beneficial effects: The method includes: responding to a braking command by providing a first current to a first sliding electromagnet and a second current to a second sliding electromagnet; acquiring a first distance between the first sliding electromagnet and a first fixed electromagnet using a first sensor; acquiring a second distance between the second sliding electromagnet and a second fixed electromagnet using a second sensor; comparing the first distance and the second distance to obtain a comparison result; if the comparison result indicates that the absolute value of the difference between the first distance and the second distance is greater than or equal to a first preset threshold, adjusting the first current or the second current to make the absolute value of the difference less than the first preset threshold. Therefore, in this method, when the difference between the first distance and the second distance is large, by changing the driving current, the first distance and the second distance are made closer, thereby making the frictional forces applied to both sides of the brake disc closer, and thus extending the service life of the brake disc.

[0047] The above text combined Figures 1 to 2 The control method of the electromagnetic brake provided in the embodiments of this application has been described in detail. The system and equipment provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0048] like Figure 3 As shown in the figure, this is a schematic diagram of a control system for an electromagnetic brake provided in an embodiment of this application. The electromagnetic brake is shown in the figure below. Figure 1 As shown, the control system includes: The response module 301 is used to provide a first current to the first sliding electromagnet and a second current to the second sliding electromagnet in response to a braking command. The acquisition module 302 is used to acquire a first distance between the first sliding electromagnet and the first fixed electromagnet through a first sensor, and to acquire a second distance between the second sliding electromagnet and the second fixed electromagnet through a second sensor. The comparison module 303 is used to compare the first distance with the second distance to obtain a comparison result; Control module 304 is configured to adjust the first current or the second current so that the absolute value of the difference between the first distance and the second distance is less than the first preset threshold if the comparison result indicates that the absolute value of the difference is greater than or equal to a first preset threshold.

[0049] Optionally, the control module 304 is specifically configured to: increase the second current if the first distance is greater than the second distance; or, increase the first current if the first distance is less than the second distance.

[0050] Optionally, the acquisition module 302 is further configured to acquire the first adjustment coefficient corresponding to the absolute value of the difference based on a first mapping relationship between the difference and the difference adjustment coefficient that is preset. The control module 304 is specifically used to adjust the first current or the second current according to the first adjustment coefficient.

[0051] Optionally, the acquisition module 302 is further configured to acquire the target number of braking actions and the target mileage of the vehicle; and to acquire the second adjustment coefficient corresponding to the target number of braking actions and the target mileage according to a pre-set second mapping relationship between the number of braking actions, the mileage and the aging adjustment coefficient. The control module 304 is further configured to adjust the first current and the second current according to the second adjustment coefficient.

[0052] Optionally, the control module 304 is specifically used to reduce the first current and the second current according to the second adjustment coefficient.

[0053] Optionally, the first sensor and the second sensor are ultrasonic ranging sensors and infrared ranging sensors.

[0054] The control system of the electromagnetic brake according to the embodiments of this application can correspond to the execution of the method described in the embodiments of this application, and the above and other operations and / or functions of each module / unit of the control system of the electromagnetic brake are respectively for realizing Figure 1 For the sake of brevity, the corresponding processes of each method in the illustrated embodiments will not be described in detail here.

[0055] This application also provides a computing device. This computing device is specifically used to implement, for example... Figure 3 The illustrated embodiment demonstrates the function of the control system for the electromagnetic brake. The hardware architecture of the computing device according to this application embodiment is described below.

[0056] like Figure 4As shown, this figure is a structural schematic diagram of a computing device 400 provided in an embodiment of this application. Figure 4 As shown, the computing device 400 includes a bus 401, a processor 402, a communication interface 403, and a memory 404. The processor 402, the memory 404, and the communication interface 403 communicate with each other via the bus 401.

[0057] Bus 401 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0058] Processor 402 can be any one or more of the following processors: central processing unit (CPU), graphics processing unit (GPU), microprocessor (MP), or digital signal processor (DSP).

[0059] Communication interface 403 is used for communication with external devices.

[0060] Memory 404 may include volatile memory, such as random access memory (RAM). Memory 404 may also include non-volatile memory, such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid state drive (SSD).

[0061] The memory 404 stores executable code, and the processor 402 executes the executable code to perform the aforementioned control method for the electromagnetic brake.

[0062] Specifically, in achieving Figure 3 In the case of the illustrated embodiment, and Figure 3 In the embodiment, if the modules or units of the electromagnetic brake control system are implemented in software, the following steps are performed: Figure 3The software or program code required for the functions of each module / unit can be partially or entirely stored in memory 404. Processor 402 executes the program code corresponding to each unit stored in memory 404 to execute the aforementioned control method of electromagnetic brake.

[0063] This application also provides a computer-readable storage medium. The computer-readable storage medium can be any available medium that a computing device can store, or a data storage device such as a data center containing one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive). The computer-readable storage medium includes instructions that instruct the computing device to execute the above-described control method for an electromagnetic brake applied to a control system for an electromagnetic brake.

[0064] This application also provides a computer program product comprising one or more computer instructions. When the computer instructions are loaded and executed on a computing device, all or part of the processes or functions described in this application are generated.

[0065] The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, or data center to another website, computer, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0066] When the computer program product is executed by a computer, the computer performs any of the aforementioned control methods for the electromagnetic brake. The computer program product can be a software installation package; when any of the aforementioned control methods for the electromagnetic brake is required, the computer program product can be downloaded and executed on the computer.

[0067] The descriptions of the processes or structures corresponding to the above figures each have their own emphasis. For parts of a process or structure that are not described in detail, please refer to the relevant descriptions of other processes or structures.

[0068] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application.

Claims

1. A control method for an electromagnetic brake, characterized in that, The electromagnetic brake includes a caliper, a first retaining ring, a second retaining ring, a first friction plate, a second friction plate, a first electromagnet fixing housing, a second electromagnet fixing housing, a first push rod, a second push rod, a first fixed electromagnet, a second fixed electromagnet, a first sliding electromagnet, a second sliding electromagnet, a first return spring, and a second return spring. The first sliding electromagnet is connected to the first friction plate via the first push rod, and the second sliding electromagnet is connected to the second friction plate via the second push rod; The first end of the first return spring is connected to the first sliding electromagnet, the second end of the first return spring is connected to the first fixed electromagnet, the first end of the second return spring is connected to the second sliding electromagnet, the second end of the second return spring is connected to the second fixed electromagnet, the first return spring is sleeved on the first push rod, and the second return spring is sleeved on the second push rod. The first sliding electromagnet, the first return spring, and the first fixed electromagnet are housed within the first electromagnet housing; the second sliding electromagnet, the second return spring, and the second fixed electromagnet are housed within the second electromagnet housing. The first retaining ring is used to limit the vertical displacement of the first friction piece, and the second retaining ring is used to limit the vertical displacement of the second friction piece; The first friction plate and the second friction plate are used to rub against the brake disc; The first end of the caliper is connected to the first fixed electromagnet, and the second end of the caliper is connected to the second fixed electromagnet. The method includes: In response to a braking command, a first current is supplied to the first sliding electromagnet and a second current is supplied to the second sliding electromagnet; The first distance between the first sliding electromagnet and the first fixed electromagnet is obtained by the first sensor, and the second distance between the second sliding electromagnet and the second fixed electromagnet is obtained by the second sensor. Compare the first distance with the second distance to obtain the comparison result; If the comparison result indicates that the absolute value of the difference between the first distance and the second distance is greater than or equal to a first preset threshold, the first current or the second current is adjusted so that the absolute value of the difference is less than the first preset threshold.

2. The method according to claim 1, characterized in that, The adjustment of the first current or the second current includes: If the first distance is greater than the second distance, then increase the second current; or, If the first distance is less than the second distance, then increase the first current.

3. The method according to claim 1, characterized in that, The method further includes: Based on a pre-defined first mapping relationship between the difference and the difference adjustment coefficient, the first adjustment coefficient corresponding to the absolute value of the difference is obtained; The adjustment of the first current or the second current includes: The first current or the second current is adjusted according to the first adjustment coefficient.

4. The method according to claim 1, characterized in that, After adjusting the first current or the second current, the method further includes: Obtain the target number of braking attempts and the target mileage of the vehicle; Based on the pre-set second mapping relationship between the number of braking operations, the mileage traveled, and the aging adjustment coefficient, a second adjustment coefficient corresponding to the target number of braking operations and the target mileage traveled is obtained; The first current and the second current are adjusted according to the second adjustment coefficient.

5. The method according to claim 4, characterized in that, According to the second adjustment coefficient, the first current and the second current are adjusted respectively, including: According to the second adjustment coefficient, the first current and the second current are reduced respectively.

6. The method according to any one of claims 1-5, characterized in that, The first sensor and the second sensor are an ultrasonic ranging sensor and an infrared ranging sensor, respectively.

7. A control system for an electromagnetic brake, characterized in that, The electromagnetic brake includes a caliper, a first retaining ring, a second retaining ring, a first friction plate, a second friction plate, a first electromagnet fixing housing, a second electromagnet fixing housing, a first push rod, a second push rod, a first fixed electromagnet, a second fixed electromagnet, a first sliding electromagnet, a second sliding electromagnet, a first return spring, and a second return spring. The first sliding electromagnet is connected to the first friction plate via the first push rod, and the second sliding electromagnet is connected to the second friction plate via the second push rod; The first end of the first return spring is connected to the first sliding electromagnet, the second end of the first return spring is connected to the first fixed electromagnet, the first end of the second return spring is connected to the second sliding electromagnet, the second end of the second return spring is connected to the second fixed electromagnet, the first return spring is sleeved on the first push rod, and the second return spring is sleeved on the second push rod. The first sliding electromagnet, the first return spring, and the first fixed electromagnet are housed within the first electromagnet housing; the second sliding electromagnet, the second return spring, and the second fixed electromagnet are housed within the second electromagnet housing. The first retaining ring is used to limit the vertical displacement of the first friction piece, and the second retaining ring is used to limit the vertical displacement of the second friction piece; The first friction plate and the second friction plate are used to rub against the brake disc; The first end of the caliper is connected to the first fixed electromagnet, and the second end of the caliper is connected to the second fixed electromagnet. The system includes: A response module is used to provide a first current to the first sliding electromagnet and a second current to the second sliding electromagnet in response to a braking command; The acquisition module is used to acquire a first distance between the first sliding electromagnet and the first fixed electromagnet through a first sensor, and to acquire a second distance between the second sliding electromagnet and the second fixed electromagnet through a second sensor; The comparison module is used to compare the first distance with the second distance to obtain the comparison result; The control module is configured to adjust the first current or the second current so that the absolute value of the difference between the first distance and the second distance is less than the first preset threshold if the comparison result indicates that the absolute value of the difference is greater than or equal to a first preset threshold.

8. The system according to claim 7, characterized in that, The control module is specifically configured to: increase the second current if the first distance is greater than the second distance; or, increase the first current if the first distance is less than the second distance.

9. A computing device, characterized in that, Including memory and processor; The memory stores one or more computer programs, the one or more computer programs including instructions; when the instructions are executed by the processor, the computing device performs the method as described in any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program for performing the method as described in any one of claims 1 to 6.

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