Test system and test method of electromagnetic clutch
By designing an electromagnetic clutch test system, using transmission and dynamometer devices to simulate the inertia of the whole vehicle, obtaining real input and output test information, the problem of low authenticity and credibility of test data in the existing technology is solved, and higher test reliability is achieved.
Patent Information
- Application Number
- CN202510511177.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2025-07-08
AI Technical Summary
The existing electromagnetic slip clutch performance test bench does not have the vehicle inertia simulation function, resulting in low authenticity and credibility of the test data.
An electromagnetic clutch testing system is designed, including a driving motor, transmission device, dynamometer and upper computer. The transmission device simulates the moment of inertia at the input end, and the dynamometer simulates the moment of inertia at the output end, obtains the test information at the input and output end, and controls the target power and load to obtain the target characteristic curve.
The authenticity of the electromagnetic clutch test data and the credibility of the test results are improved, making the test results closer to the real workload on the entire vehicle.
Smart Images
Figure CN120275041A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of clutch testing, and particularly to a testing system and method for an electromagnetic clutch. Background Art
[0002] An electromagnetic clutch is a device that uses electromagnetic force to achieve the connection or disconnection of power transmission. Currently, it is widely used in various mechanical systems. However, the existing performance test bench for electromagnetic slip clutches does not have the function of simulating the vehicle inertia, and the authenticity of the test data obtained is relatively low, resulting in a low credibility of the test results. Summary of the Invention
[0003] In view of this, this application provides a testing system and method for an electromagnetic clutch, which are used to improve the authenticity of the test data of the electromagnetic clutch and the credibility of the test results. The technical solution of this application is as follows: In the first aspect of this application, a testing system for an electromagnetic clutch is provided, including: a driving motor; a transmission device, connected to the driving motor and the electromagnetic clutch to be tested, the transmission device is used to transmit the power of the driving motor to the electromagnetic clutch to be tested, simulate the input end moment of inertia, and obtain the input end test information of the electromagnetic clutch to be tested; a fixing tooling, used to fix the electromagnetic clutch to be tested; a dynamometer, connected to the electromagnetic clutch to be tested, the dynamometer is used to provide a target load for the electromagnetic clutch to be tested, simulate the output end moment of inertia, and obtain the output end test information of the electromagnetic clutch to be tested; a host computer, connected to the driving motor, the transmission device, and the dynamometer, and is used to control the driving motor to transmit target power to the electromagnetic clutch to be tested through the transmission device during the test, and control the dynamometer to output the target load.
[0004] In an embodiment of this application, the transmission device includes a friction plate clutch, and the driving motor is connected to the electromagnetic clutch to be tested through the friction plate clutch; the host computer is used to control the friction plate clutch to be powered on and engaged or disconnected during the test.
[0005] In an embodiment of this application, a regulated power supply is further included, and the regulated power supply is respectively connected to the host computer, the electromagnetic clutch to be tested, and the friction plate clutch; the host computer is used to control the regulated power supply to supply power to the electromagnetic clutch to be tested and the friction plate clutch respectively during the test.
[0006] In an embodiment of the present application, the transmission device further includes a torque sensor, an input end inertia disk, and a coupling. The drive motor is sequentially connected to the electromagnetic clutch to be measured through the friction plate clutch, the coupling, the input end inertia disk, and the torque sensor. The torque sensor is configured to detect torque information of the electromagnetic clutch to be measured and transmit it to the host computer. The input end inertia disk is configured to simulate the input end moment of inertia.
[0007] In an embodiment of the present application, the dynamometer device includes a load dynamometer, an output end inertia disk, and a universal joint drive shaft. The load dynamometer is sequentially connected to the electromagnetic clutch to be measured through the output end inertia disk and the universal joint drive shaft. The load dynamometer is configured to output the target load. The output end inertia disk is configured to simulate the output end moment of inertia.
[0008] In an embodiment of the present application, the input end test information includes at least one of the input end speed, input end torque, input end temperature, and input end displacement of the electromagnetic clutch to be measured. The output end test information includes at least one of the output end speed, output end torque, output end temperature, and output end displacement of the electromagnetic clutch to be measured.
[0009] In an embodiment of the present application, the transmission device further includes at least one of a first speed sensor, a first laser displacement sensor, and a first temperature sensor. The dynamometer device further includes at least one of a second speed sensor, a second laser displacement sensor, and a second temperature sensor. The first speed sensor is configured to detect the input end speed. The first laser displacement sensor is configured to detect the input end displacement. The first temperature sensor is configured to detect the input end temperature. The second speed sensor is configured to detect the output end speed. The second laser displacement sensor is configured to detect the output end displacement. The second temperature sensor is configured to detect the output end temperature.
[0010] The second aspect of the present application provides a testing method for an electromagnetic clutch, which is applied to a testing system. The testing system includes: a driving motor; a transmission device connected to the driving motor and the electromagnetic clutch to be tested. The transmission device is used to transmit the power of the driving motor to the electromagnetic clutch to be tested, simulate the rotational inertia of the input end, and obtain the test information of the input end of the electromagnetic clutch to be tested; a fixing tooling for fixing the electromagnetic clutch to be tested; a dynamometer device connected to the electromagnetic clutch to be tested. The dynamometer device is used to provide a target load for the electromagnetic clutch to be tested, simulate the rotational inertia of the output end, and obtain the test information of the output end of the electromagnetic clutch to be tested. The testing method includes: during the test, controlling the driving motor to transmit target power to the electromagnetic clutch to be tested through the transmission device; controlling the dynamometer device to output the target load; and obtaining the target characteristic curve of the electromagnetic clutch to be tested according to the test information of the input end and the test information of the output end.
[0011] In an embodiment of the present application, the dynamometer device includes a load dynamometer, an output end inertia disc, and a universal joint drive shaft. The load dynamometer is sequentially connected to the electromagnetic clutch to be tested through the output end inertia disc and the universal joint drive shaft. The load dynamometer is used to output the target load, and the output end inertia disc is used to simulate the rotational inertia of the output end. The obtaining the target characteristic curve of the electromagnetic clutch to be tested according to the test information of the input end and the test information of the output end includes: controlling the rotational speed difference between the driving motor and the load dynamometer to change according to a first step value; obtaining the test information of the input end and the test information of the output end corresponding to each rotational speed difference; and obtaining the target characteristic curve according to the rotational speed difference, the corresponding test information of the input end, and the test information of the output end.
[0012] In an embodiment of the present application, the testing method further includes: controlling the driving motor to output a target rotational speed, the load dynamometer to output a target road resistance, and the working current of the electromagnetic clutch to be tested to be at a target current value; reducing the working current according to a second step value until the load dynamometer runs away, and recording the working current corresponding to the runaway as the slip friction point current; and obtaining the target characteristic curve according to the target rotational speed, the target road resistance, and the slip friction point current.
[0013] It can be understood that in the test system of the present application, by setting a transmission device and a dynamometer device, during the test, the target power of the drive motor is transmitted to the electromagnetic clutch under test through the transmission device, and the input end moment of inertia is simulated, and the target load is provided for the electromagnetic clutch under test through the dynamometer device, and the output end moment of inertia is simulated, so that the electromagnetic clutch under test is closer to the real working load when assembled on the vehicle during the test, thereby making the obtained input end test information and output end test information more real and reliable, and making the obtained target characteristic curve more credible. Description of the Drawings
[0014] Figure 1 is a schematic block diagram of a test system for an electromagnetic clutch provided by an embodiment of the present application.
[0015] Figure 2 is a schematic block diagram of a second test system for an electromagnetic clutch provided by an embodiment of the present application.
[0016] Figure 3 is a schematic block diagram of a third test system for an electromagnetic clutch provided by an embodiment of the present application.
[0017] Figure 4 is a schematic block diagram of a fourth test system for an electromagnetic clutch provided by an embodiment of the present application.
[0018] Figure 5 is a schematic block diagram of a fifth test system for an electromagnetic clutch provided by an embodiment of the present application.
[0019] Figure 6 is a schematic flow chart of a test method for an electromagnetic clutch provided by an embodiment of the present application.
[0020] Figure 7 is a schematic flow chart of a method for obtaining a target characteristic curve provided by an embodiment of the present application.
[0021] Figure 8 is a schematic flow chart of another method for obtaining a target characteristic curve provided by an embodiment of the present application. Detailed Embodiments
[0022] It should be noted that in the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B may be singular or plural. The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and drawings of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence.
[0023] In addition, it should be noted that the methods disclosed in the embodiments of the present application or the methods shown in the flowcharts include one or more steps for implementing the methods. Without departing from the scope of the claims, the execution order of multiple steps can be interchanged with each other, and some steps can also be deleted.
[0024] An electromagnetic clutch is a device that uses electromagnetic force to achieve the connection or disconnection of power transmission and is currently widely used in various mechanical systems. However, the existing electromagnetic slip clutch performance test bench does not have the function of simulating the vehicle inertia, and the authenticity of the test data obtained by the test is relatively low, resulting in a relatively low credibility of the test results.
[0025] The present application provides a test system and a test method for an electromagnetic clutch, which are used to improve the authenticity of the test data of the electromagnetic clutch and the credibility of the test results.
[0026] Please refer to Figure 1 , Figure 1 , which is a schematic block diagram of a test system for an electromagnetic clutch provided by an embodiment of the present application. Among them, the test system 100 includes a drive motor 110, a transmission device 120, a fixing tooling 130, a dynamometer device 140, and a host computer 150.
[0027] In the embodiment of the present application, the transmission device 120 is connected to the drive motor 110 and is used to be connected to the power input end of the electromagnetic clutch 101 to be tested. The transmission device 120 is used to transmit the power of the drive motor 110 to the electromagnetic clutch 101 to be tested, and simulate the input end moment of inertia of the power input end of the electromagnetic clutch 101 when transmitting the power. The transmission device 120 is further used to obtain the input end test information of the electromagnetic clutch 101 to be tested during the test. For example, the input end test information includes information such as the temperature, displacement, and torque of the power input end of the electromagnetic clutch 101 to be tested.
[0028] The fixing tooling 130 can be arranged on the test platform and is used to fix the electromagnetic clutch 101 to be tested. For example, the bottom of the fixing tooling 130 can be fixed to the test platform by bolts, and during the test, the staff can also install the electromagnetic clutch 101 to be tested inside the fixing tooling 130 by bolts.
[0029] The dynamometer device 140 is used to be connected to the power output end of the electromagnetic clutch 101 to be tested, provide a target load for the electromagnetic clutch 101 to be tested, and simulate the output end moment of inertia of the power output end of the electromagnetic clutch 101 to be tested when providing the target load. The dynamometer device 140 is further used to obtain the output end test information of the electromagnetic clutch 101 to be tested during the test. For example, the output end test information includes information such as the temperature, displacement, and torque of the power output end of the electromagnetic clutch 101 to be tested.
[0030] The host computer 150 is connected to the drive motor 110, the transmission device 120, and the dynamometer device 140, and is used to control the drive motor 110 to transmit the target power to the electromagnetic clutch 101 to be measured through the transmission device 120 during the test, and control the dynamometer device 140 to output the target load, and obtain the target characteristic curve of the electromagnetic clutch 101 to be measured according to the received corresponding input - end test information and output - end test information.
[0031] Among them, the target power of the drive motor 110 includes rotational speed, torque, etc., and the target load of the dynamometer device 140 includes road resistance, rotational speed, etc., which are not limited here. The target characteristic curve can represent the relationship of any combination among the target power, the target load, the input - end test information, and the output - end test information.
[0032] It can be understood that in the test system 100 of the present application, by setting the transmission device 120 and the dynamometer device 140, during the test, the target power of the drive motor 110 is transmitted to the electromagnetic clutch 101 to be measured through the transmission device 120, and the input - end moment of inertia is simulated, and the dynamometer device 140 provides the target load for the electromagnetic clutch 101 to be measured and simulates the output - end moment of inertia, so that the electromagnetic clutch 101 to be measured is closer to the real working load when assembled on the vehicle during the test, and further makes the obtained input - end test information and output - end test information more real and reliable, and makes the obtained target characteristic curve more credible.
[0033] In some embodiments, as Figure 2 shown, the transmission device 120 includes a friction - plate clutch 121. The drive motor 110 is connected to the electromagnetic clutch 101 to be measured through the friction - plate clutch 121.
[0034] In the embodiments of the present application, when testing the electromagnetic clutch 101 to be measured, the host computer 150 controls the friction - plate clutch 121 to be powered on and engaged or disengaged, so that the target power of the drive motor 110 is transmitted to the electromagnetic clutch 101 to be measured through the engaged friction - plate clutch 121. It can be understood that by setting the friction - plate clutch 121 in this embodiment, the transmission of the target power can be disconnected at any time during the test, thus ensuring the safety of the electromagnetic clutch 101 to be measured during the test. Among them, the electromagnetic clutch 101 to be measured includes a toothed clutch and a friction - plate clutch, which are not limited here.
[0035] In some embodiments, as Figure 3 shown, the test system 100 further includes a regulated power supply 160, and the regulated power supply 160 is respectively connected to the host computer 150, the electromagnetic clutch 101 to be measured, and the friction - plate clutch 121.
[0036] In the embodiment of the present application, the host computer 150 is used to control the regulated power supply 160 to supply power to the electromagnetic clutch 101 under test and the friction plate clutch 121 respectively during the test.
[0037] Please refer to Figure 4 , Figure 4 which is a schematic block diagram of the fourth test system 100 for an electromagnetic clutch provided by the embodiment of the present application. Among them, compared with the Figure 1 test system 100 shown, in the Figure 4 test system 100 shown, the transmission device 120 includes a friction plate clutch 121, a torque sensor 122, an input end inertia disk 123, and a coupling 124.
[0038] In the embodiment of the present application, the drive motor 110 is sequentially connected to the electromagnetic clutch 101 under test through the friction plate clutch 121, the coupling 124, the input end inertia disk 123, and the torque sensor 122. Among them, the torque sensor 122 is used to detect the torque information of the electromagnetic clutch 101 under test and transmit it to the host computer 150. The input end inertia disk is used to simulate the input end rotational inertia.
[0039] In some embodiments, the input end inertia disk 123 can be a metal disk with a specific mass, and through its shape and weight distribution, an accurate input end rotational inertia can be obtained.
[0040] Please refer to Figure 5 , Figure 5 which is a schematic block diagram of the fifth test system 100 for an electromagnetic clutch provided by the embodiment of the present application. Among them, compared with the Figure 4 test system 100 shown, in the Figure 5 test system 100 shown, the dynamometer device 140 includes a load dynamometer 141, an output end inertia disk 142, and a universal joint drive shaft 143.
[0041] In the embodiment of the present application, the load dynamometer 141 is sequentially connected to the electromagnetic clutch 101 under test through the output end inertia disk 142 and the universal joint drive shaft 143. Among them, the load dynamometer 141 is used to output a target load. The output end inertia disk 142 is used to simulate the output end rotational inertia.
[0042] It can be understood that in the dynamometer device 140, by setting the universal joint drive shaft 143 to be connected to the electromagnetic clutch 101 under test, the electromagnetic clutch 101 under test can be allowed to be non-rigidly connected to the test system 100, thereby reducing the difficulty of installing the electromagnetic clutch 101 under test into the test system 100.
[0043] In some embodiments, the output end inertia disk 142 can also be a metal disk with a specific mass, and through its shape and weight distribution, an accurate output end rotational inertia can be obtained.
[0044] In some embodiments, the host computer 150 is further configured to: control the rotational speed difference between the driving motor 110 and the load dynamometer 141 to change according to a first step value, obtain the input end test information and the output end test information corresponding to each rotational speed difference, and obtain a target characteristic curve according to the rotational speed difference, the corresponding input end test information, and the output end test information.
[0045] For example, the host computer 150 can obtain the torque information corresponding to each rotational speed difference, generate a rotational speed difference - torque characteristic curve as the above target characteristic curve. Similarly, a rotational speed difference - temperature characteristic curve, a rotational speed difference - displacement characteristic curve, etc. can also be obtained, which are not limited herein.
[0046] In some embodiments, the host computer 150 is further configured to: control the driving motor 110 to output a target rotational speed, the load dynamometer 141 to output a target road resistance, and the working current of the electromagnetic clutch 101 under test to be at a target current value, reduce the working current according to a second step value until the load dynamometer 141 runs away, record the working current corresponding to the runaway as the slip point current, and obtain a target characteristic curve according to the target rotational speed, the target road resistance, and the slip point current.
[0047] For example, the host computer 150 may pre - store a Lu Pu function relational expression Y = aX 2 + bX + c, where Y is the above - mentioned target road resistance, X is the above - mentioned target rotational speed, and a, b, and c are coefficients obtained through experiments. The host computer 150 obtains multiple target rotational speeds and the corresponding target road resistances through the Lu Pu function relational expression, conducts the above - mentioned test of the slip point current, thereby obtains the slip point currents corresponding to multiple target road resistances, and finally obtains a road resistance - slip point current characteristic curve as the target characteristic curve.
[0048] In the embodiments of the present application, the input end test information includes at least one of the input end rotational speed, input end torque, input end temperature, and input end displacement of the electromagnetic clutch 101 under test. The output end test information includes at least one of the output end torque, output end temperature, and output end displacement of the electromagnetic clutch 101 under test.
[0049] In some embodiments, the transmission device 120 further includes at least one of a first rotational speed sensor, a first laser displacement sensor, and a first temperature sensor. The dynamometer device 140 further includes at least one of a second rotational speed sensor, a second laser displacement sensor, and a second temperature sensor. The first rotational speed sensor is used to detect the input end rotational speed. The first laser displacement sensor is used to detect the input end displacement. The first temperature sensor is used to detect the input end temperature. The second rotational speed sensor is used to detect the output end rotational speed. The second laser displacement sensor is used to detect the output end displacement. The second temperature sensor is used to detect the output end temperature.
[0050] Please refer to Figure 6 , Figure 6 which is a schematic flow chart of a test method for an electromagnetic clutch provided by an embodiment of the present application. Among them, the test method for the electromagnetic clutch is applied to a test system, and the test system includes: a driving motor, a transmission device, a fixing tooling, and a dynamometer. The transmission device is connected to the driving motor and the electromagnetic clutch to be tested, and is used to transmit the power of the driving motor to the electromagnetic clutch to be tested, simulate the input end moment of inertia, and obtain the input end test information of the electromagnetic clutch to be tested. The fixing tooling is used to fix the electromagnetic clutch to be tested, and the dynamometer is connected to the electromagnetic clutch to be tested, and is used to provide a target load for the electromagnetic clutch to be tested, simulate the output end moment of inertia, and obtain the output end test information of the electromagnetic clutch to be tested.
[0051] In the embodiment of the present application, the test method for the electromagnetic clutch includes the following steps: Step S61: During the test, control the driving motor to transmit the target power to the electromagnetic clutch to be tested through the transmission device.
[0052] Step S62: Control the dynamometer to output the target load.
[0053] Step S63: Obtain the target characteristic curve of the electromagnetic clutch to be tested according to the input end test information and the output end test information.
[0054] In some embodiments, the dynamometer includes a load dynamometer, an output end inertia disk, and a universal joint drive shaft. The load dynamometer is sequentially connected to the electromagnetic clutch to be tested through the output end inertia disk and the universal joint drive shaft. The load dynamometer is used to output the target load, and the output end inertia disk is used to simulate the output end moment of inertia. As Figure 7 shown, the above step S63 may specifically further include the following steps: Step S71: Control the speed difference between the driving motor and the load dynamometer to change according to the first step value.
[0055] Step S72: Obtain the input end test information and the output end test information corresponding to each speed difference.
[0056] Step S73: Obtain the target characteristic curve according to the speed difference, the corresponding input end test information, and the output end test information.
[0057] In some embodiments, as Figure 8 shown, the above step S63 may specifically further include the following steps: Step S81: Control the driving motor to output the target speed, the load dynamometer to output the target road resistance, and the working current of the electromagnetic clutch to be tested to be at the target current value.
[0058] Step S82: Reduce the working current according to the second step value until the load dynamometer runs away, and record the working current corresponding to the runaway as the slip friction point current. Step S83: Obtain the target characteristic curve according to the target speed, the target road resistance, and the slip friction point current.
[0059] In the embodiment of the present application, the beneficial effects of the above test method can refer to the beneficial effects of the test system in the foregoing embodiment, which will not be elaborated herein.
[0060] The embodiment of the present application also provides a computer storage medium, which stores a computer program. When the computer program is executed by a processor, the processor is enabled to execute the above test method.
[0061] In the above embodiment, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer storage medium or transmitted through the computer storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer storage medium may be any available medium accessible by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital versatile disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)), etc.
[0062] Those of ordinary skill 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 through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it may include the processes of the embodiments of the above methods. The foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disc, etc., which can store program codes. Without conflict, the technical features in this embodiment and the implementation scheme can be combined arbitrarily.
[0063] The embodiments described above are merely described in terms of the preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present application shall fall within the protection scope determined by the claims of the present application.
Claims
1. A test system for an electromagnetic clutch, characterized in that, Comprising: A driving motor; A transmission device, connected to the driving motor and the electromagnetic clutch to be measured. The transmission device is used to transmit the power of the driving motor to the electromagnetic clutch to be measured, simulate the input end moment of inertia, and obtain the input end test information of the electromagnetic clutch to be measured; A fixing tooling for fixing the electromagnetic clutch to be measured; A dynamometer device, connected to the electromagnetic clutch to be measured. The dynamometer device is used to provide a target load for the electromagnetic clutch to be measured, simulate the output end moment of inertia, and obtain the output end test information of the electromagnetic clutch to be measured; A host computer, connected to the driving motor, the transmission device and the dynamometer device, and is used to control the driving motor to transmit target power to the electromagnetic clutch to be measured through the transmission device during the test, and control the dynamometer device to output the target load.
2. The test system according to claim 1, characterized in that The transmission device includes a friction plate clutch, and the driving motor is connected to the electromagnetic clutch to be measured through the friction plate clutch; The host computer is used to control the friction plate clutch to be powered on and engaged or disconnected during the test.
3. The test system according to claim 2, wherein It further includes a regulated power supply, and the regulated power supply is respectively connected to the host computer, the electromagnetic clutch to be measured and the friction plate clutch; The host computer is used to control the regulated power supply to supply power to the electromagnetic clutch to be measured and the friction plate clutch respectively during the test.
4. The test system according to claim 2, wherein The transmission device further includes a torque sensor, an input end inertia disc and a coupling. The driving motor is sequentially connected to the electromagnetic clutch to be measured through the friction plate clutch, the coupling, the input end inertia disc and the torque sensor; The torque sensor is used to detect the torque information of the electromagnetic clutch to be measured and transmit it to the host computer; The input end inertia disc is used to simulate the input end moment of inertia.
5. The test system according to claim 1, characterized in that The dynamometer device includes a load dynamometer, an output end inertia disc and a universal joint drive shaft. The load dynamometer is sequentially connected to the electromagnetic clutch to be measured through the output end inertia disc and the universal joint drive shaft; The load dynamometer is used to output the target load; The output end inertia disc is used to simulate the output end moment of inertia.
6. The test system according to any one of claims 1 to 5, characterized in that The input end test information includes at least one of the input end speed, input end torque, input end temperature and input end displacement of the electromagnetic clutch to be measured; the output end test information includes at least one of the output end speed, output end torque, output end temperature and output end displacement of the electromagnetic clutch to be measured.
7. The test system according to claim 6, characterized in that The transmission device further includes at least one of a first speed sensor, a first laser displacement sensor and a first temperature sensor; the dynamometer device further includes at least one of a second speed sensor, a second laser displacement sensor and a second temperature sensor; The first speed sensor is used to detect the input end speed; The first laser displacement sensor is used to detect the input end displacement; The first temperature sensor is used to detect the input end temperature; The second speed sensor is used to detect the output end speed; The second laser displacement sensor is used to detect the output end displacement; The second temperature sensor is used to detect the output end temperature.
8. A testing method for an electromagnetic clutch, characterized in that, Applied to a test system, the test system comprises: a drive motor; a transmission device connected to the drive motor and the electromagnetic clutch to be tested, the transmission device is used to transmit the power of the drive motor to the electromagnetic clutch to be tested, and simulate the moment of inertia of the input end, and obtain the input end test information of the electromagnetic clutch to be tested; a fixing tool is used to fix the electromagnetic clutch to be tested; a dynamometer device connected to the electromagnetic clutch to be tested, the dynamometer device is used to provide a target load for the electromagnetic clutch to be tested, and simulate the moment of inertia of the output end, and obtain the output end test information of the electromagnetic clutch to be tested; The test method includes: During the test, the driving motor is controlled to transmit the target power to the electromagnetic clutch under test through the transmission device; Controlling the dynamometer to output the target load; A target characteristic curve of the electromagnetic clutch under test is obtained according to the input end test information and the output end test information.
9. The test method according to claim 8, wherein, The dynamometer comprises a load dynamometer, an output end inertia disc and a universal joint transmission shaft, wherein the load dynamometer is connected to the electromagnetic clutch to be tested via the output end inertia disc and the universal joint transmission shaft in sequence, the load dynamometer is used to output the target load, and the output end inertia disc is used to simulate the output end rotational inertia; The step of obtaining the target characteristic curve of the electromagnetic clutch under test according to the input end test information and the output end test information comprises: Controlling the speed difference between the drive motor and the load dynamometer to change according to the first step length value; Acquire the input end test information and the output end test information corresponding to each rotation speed difference; The target characteristic curve is obtained according to the rotation speed difference, the corresponding input end test information and the output end test information.
10. The test method according to claim 9, wherein, The test method also includes: Controlling the drive motor to output a target speed, the load dynamometer to output a target road resistance, and the working current of the electromagnetic clutch to be tested to be at a target current value; The working current is reduced according to the second step value until the load dynamometer shows a runaway condition, and the working current corresponding to the runaway condition is recorded as the slip point current; The target characteristic curve is obtained according to the target rotation speed, the target road resistance and the slip point current.