Experimental System and Method for Electric Drive Gear Reducer

Abstract

This application relates to the technical field of experimental methods and equipment, specifically to an experimental system and method for an electric drive reducer. The electric drive reducer experimental system includes: a motor control system, a monitoring system, and at least two experimental bench units. Each experimental bench unit is used to fix and drive the reducer during the experiment, and the reducers corresponding to each experimental bench unit are different. The motor control system, connected to each experimental bench unit, is used to control the experimental unit to perform the experiment. The monitoring system is used to collect experimental data from the reducers being tested on the experimental bench units. Thus, different reducers can be adapted to different experimental bench units. The electric drive reducer experimental system can perform experiments on different reducers.

Description

Technical Field

[0001] This application relates to the field of test methods and test equipment, specifically a test system and method for an electric drive speed reducer. Background Technology

[0002] As a connecting device between a power unit and an actuator, a speed reducer plays a role in matching speed and transmitting torque. It is widely used in modern machinery. In the field of heavy equipment, due to the complexity and diversity of its working conditions, the demand for speed reducers is characterized by multiple types, styles, and small batches. When designing a speed reducer, it is necessary to continuously conduct experiments on the speed reducer to obtain experimental data, so as to further improve the speed reducer based on the experimental data.

[0003] In actual testing, different motor control systems and test bench units are often required for different speed reducers. The test system consists of a motor control system and a test bench unit matched with the speed reducer. However, in this way, one test system is required for each speed reducer, which results in high testing costs. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides an experimental system and method for an electric drive speed reducer.

[0005] According to a first aspect of the embodiments of this application, an electric drive reducer experimental system is provided, including: a motor control system, a monitoring system, and at least two experimental bench units;

[0006] The experimental bench unit is used to fix the reducer and drive the reducer to perform the experiment, wherein the reducers corresponding to each experimental bench unit are different from each other.

[0007] A motor control system, which is connected to each of the experimental bench units, is used to control the experimental units to perform experiments.

[0008] The monitoring system is used to collect experimental data of the speed reducer being tested on the experimental bench unit.

[0009] In one embodiment, the experimental bench unit includes: a main test motor, a secondary test motor, an experimental bench unit body, and at least one connecting component;

[0010] The main body of the experimental bench unit is fixed to the reducer via the connecting component;

[0011] The main test motor is connected to the input shaft of the reducer and is used to drive the reducer to rotate;

[0012] The test motor is connected to the output shaft of the reducer and outputs torque to prevent the reducer from rotating.

[0013] In one embodiment, the motor control system includes: a power supply, a battery simulator, and a motor controller;

[0014] The power supply is used to power the battery simulator and the motor controller;

[0015] The battery simulator is used to simulate the battery corresponding to the speed reducer used in the experiment.

[0016] The motor controller is connected to the battery simulator and is used to control the rotation of the motor on the experimental bench unit according to a preset control strategy using the power provided by the battery simulator.

[0017] In one embodiment, the motor controller includes: a main test motor controller and a secondary test motor controller;

[0018] The main test motor controller is connected to the main test motor on the experimental bench unit and is used to drive the reducer fixed on the experimental bench unit to rotate through the main test motor.

[0019] The test motor controller is connected to the test motor on the test bench unit, and is used to apply a reverse torque to prevent the reducer from rotating through the test motor and to recover energy.

[0020] In one embodiment, the monitoring system includes: a data acquisition and processing module, a Hall current sensor, a temperature sensor, and a torque sensor;

[0021] The temperature sensor is used to collect the oil temperature information of the reducer;

[0022] The torque sensor is used to collect the output torque information of the speed reducer;

[0023] The Hall current sensor is used to collect the current information output by the motor control system;

[0024] The data acquisition and processing module is communicatively connected to the Hall current sensor, the temperature sensor, the torque sensor, and the motor control system, respectively, and is used to acquire the current information, the oil temperature information, the torque information, and the information of the motor control system.

[0025] In one embodiment, the monitoring system is communicatively connected to the battery simulator, the motor controller, and the main test motor of the test bench unit, respectively, for collecting current data information of the battery simulator, the motor controller, and the main test motor, and determining the input power of the reducer based on the current data information.

[0026] In one embodiment, the experimental platform unit further includes a water-cooling system:

[0027] The water-cooling system is used to cool the electric drive reducer experimental system.

[0028] In one embodiment, the monitoring system further includes a wireless communication module:

[0029] The monitoring system communicates with a preset remote terminal through the wireless communication module, and is used to send the experimental data to the remote terminal or obtain the control commands sent by the remote terminal, and control the electric drive reducer experimental system based on the control commands.

[0030] According to a second aspect of the embodiments of this application, an experimental method for an electrically driven speed reducer is provided, comprising:

[0031] Based on the parameter information of the reducer and the preset experimental strategy, the internal parameter information of the motor control system is adjusted so that the motor control system matches the reducer.

[0032] Determine the experimental bench unit where the speed reducer is located;

[0033] The motor control system outputs an experimental signal matching the reducer to the experimental bench unit where the reducer is located, so as to control the experimental bench unit to carry out the experiment;

[0034] Collect experimental data.

[0035] In one embodiment, the step of determining the test bench unit where the speed reducer is located includes:

[0036] Obtain the experimental bench instruction information input by the user;

[0037] Based on the experimental bench indication information, the experimental bench unit where the speed reducer is located is determined.

[0038] The solution provided in this application includes an electric drive reducer experimental system comprising: a motor control system, a monitoring system, and at least two experimental bench units. Each experimental bench unit is used to fix the reducer and drive it to perform experiments. The reducers corresponding to each experimental bench unit are different. The motor control system, connected to each experimental bench unit, is used to control the experimental unit to perform the experiment. The monitoring system is used to collect experimental data from the reducers being tested on the experimental bench units. Thus, different reducers can be adapted to different experimental bench units. The electric drive reducer experimental system can perform experiments on different reducers. Compared to the solutions in the prior art, the electric drive reducer testing system provided in this application can effectively reduce experimental costs. Attached Figure Description

[0039] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0040] Figure 1 The diagram shown is a schematic diagram of an experimental system for an electric drive speed reducer provided in an embodiment of this application.

[0041] Figure 2 The diagram shown is a schematic diagram of another electric drive reducer experimental system provided in an embodiment of this application.

[0042] Figure 3 The diagram shown is a flowchart illustrating an experimental method for an electric drive speed reducer provided in an embodiment of this application. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Application Overview

[0045] As a connecting device between a power unit and an actuator, a speed reducer plays a role in matching speed and transmitting torque. It is widely used in modern machinery. In the field of heavy equipment, due to the complexity and diversity of its working conditions, the demand for speed reducers is characterized by multiple types, styles, and small batches. When designing a speed reducer, it is necessary to continuously conduct experiments on the speed reducer to obtain experimental data, so as to further improve the speed reducer based on the experimental data.

[0046] In actual testing, different motor control systems and test bench units are often required for different speed reducers. The test system consists of a motor control system and a test bench unit matched with the speed reducer. However, in this way, one test system is required for each speed reducer, which results in high testing costs.

[0047] To address the aforementioned problems, this invention provides an electric drive reducer experimental system, comprising: a motor control system, a monitoring system, and at least two experimental bench units; each experimental bench unit is used to fix the reducer and drive it to perform experiments; wherein the reducers corresponding to each experimental bench unit are different; the motor control system, connected to each experimental bench unit, is used to control the experimental unit to perform experiments; the monitoring system is used to collect experimental data of the reducers being tested on the experimental bench units. Thus, different reducers can be adapted to different experimental bench units. The electric drive reducer experimental system can perform experiments on different reducers.

[0048] Having introduced the basic principles of this application, various non-limiting embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0049] Exemplary System

[0050] Figure 1 The diagram shown is a schematic representation of an experimental system for an electrically driven speed reducer provided in an embodiment of this application. (Refer to...) Figure 1 The electric drive reducer experimental system provided in this application includes:

[0051] The system includes a motor control system 1, a monitoring system 3, and at least two experimental bench units 2.

[0052] Experimental bench unit 2 is used to fix the reducer and drive the reducer to carry out the experiment. The reducers corresponding to each experimental bench unit 2 are different.

[0053] The motor control system 1, which is connected to each experimental bench unit 2, is used to control the experimental unit to conduct experiments.

[0054] Monitoring system 3 is used to collect experimental data of the speed reducer being tested on the experimental bench unit 2.

[0055] With this setup, different experimental bench units 2 can be selected based on the different speed reducers being tested, and experiments on different models and types of electric drive speed reducers can be completed using the same set of electric drive speed reducer experimental system.

[0056] Specifically, the experimental bench unit 2 includes: a main test motor 21, a secondary test motor 22, the main body of the experimental bench unit, and at least one connecting component 23;

[0057] The main body of the experimental bench unit is fixed to the reducer via connecting component 23;

[0058] The main test motor 21 is connected to the input shaft of the reducer and is used to drive the reducer to rotate;

[0059] The test motor 22 is connected to the output shaft of the reducer and outputs torque to stop the reducer from rotating.

[0060] In practical applications, the connecting component 23 can be a flange, through which the reducer is fixedly connected to the test bench unit 2. Furthermore, the connecting component 23 can include multiple types of flanges, allowing the same test bench unit to be used for testing multiple types of reducers. That is, in practical applications, a reducer of one type can be fixed using a single flange. When it is necessary to test other types of reducers, other types of reducers can be fixed using different flanges.

[0061] In one embodiment, refer to Figure 2 The test bench unit is specifically as follows: the main test motor 21 is connected to the input shaft of the reducer via a flange, and the auxiliary test motor 22 is connected to the output shaft of the reducer via an adapter flange; the reducer is fixed on a fixed base; the fixed base is fixed to a cast iron floor. It should be noted that the above is merely an exemplary structure of a test bench unit. In the solution provided in this application, the test bench unit may include various structures corresponding to various types of reducers.

[0062] In one embodiment, the motor control system 1 includes: a power supply 11, a battery simulator 12, and a motor controller;

[0063] Power supply 11 is used to power the battery simulator 12 and the motor controller;

[0064] Battery simulator 12 is used to simulate the battery corresponding to the speed reducer used in the experiment;

[0065] The motor controller is connected to the battery simulator 12 and is used to control the rotation of the motor on the experimental bench unit 2 according to the preset control strategy using the power provided by the battery simulator 12.

[0066] With this setup, the battery simulator 12 simulates the battery corresponding to the speed reducer being tested. The power supply 11, battery simulator 12, and motor controller inside the motor control system 1 can meet the input current requirements in various speed reducer experiments.

[0067] Furthermore, the motor controller includes: a main test motor controller 13 and a secondary test motor controller 14;

[0068] The main test motor controller 13 is connected to the main test motor 21 on the experimental bench unit 2, and is used to drive the reducer fixed on the experimental bench unit 2 to rotate through the main test motor 21.

[0069] The test motor controller 14 is connected to the test motor 22 on the test bench unit 2, and is used to apply a reverse torque to prevent the reducer from rotating through the test motor 22 and to recover energy.

[0070] This setup allows for energy recovery during speed reducer testing, preventing energy waste and improving energy efficiency.

[0071] Specifically, the power supply 11 can be a distribution cabinet. The distribution cabinet is connected to the battery simulator 12's incoming line cabinet via a double-ply 3*240+1*240mm² power cable. The battery simulator 12 has dual channels. The first channel's DC output is connected to the DC input terminal of the main test motor controller 13 via a 70mm² shielded DC cable (in this case, a 70mm² cable is used because the motor power is 60KW; the cable type can be changed depending on the motor power). The second channel's DC output is connected to the auxiliary test motor controller via a 70mm² shielded DC cable. The DC input terminal of 14, and the three-phase AC output terminals of the main test motor controller 13 and the auxiliary test motor controller 14 are connected to the input terminals of the main test and auxiliary test point distributors respectively through 3*70mm2 shielded AC cables (in this case, because the controlled motor power is 60KW, 70mm2 cables are used; the cable type can be changed according to different motor power). The main test and auxiliary test point distributors have multiple sets of output ports, and each set of output ports connects to the control assembly of the main test motor 21 and the auxiliary test motor 22 of the test bench unit. Specifically, the main test and auxiliary test point distributors each have 3 sets of output ports (theoretically, they can be expanded to more than 8 sets). Each set of output ports is connected to "the input terminal of the main test motor and the input terminal of the auxiliary test motor of one test bench unit". In practical applications, multiple test bench units can be controlled to work simultaneously through the 3 sets of output ports based on actual needs.

[0072] Furthermore, the experimental platform unit 2 also includes a water-cooling system 4: the water-cooling system 4 cools the electric drive reducer experimental system. This configuration controls the temperature of the electric drive reducer experimental system, preventing excessively high operating temperatures from affecting its operation.

[0073] Specifically, the water temperature cooling system 4 has two outputs: one output corresponds to the main test motor controller 13 and the main test motor 21; the other output corresponds to the auxiliary test motor controller 14 and the auxiliary test motor 22; each output is connected in series. The piping route is as follows:

[0074] The first output of the water temperature heat dissipation system 4 is connected in series with the first channel outlet of the water temperature heat dissipation system 4, the heat dissipation pipe inlet of the main test motor controller 13, the heat dissipation pipe outlet of the main test motor controller 13, the water cooling inlet of the main test motor 21, the water cooling outlet of the main test motor 21, and the first channel inlet of the water temperature heat dissipation system 4.

[0075] The second output of the water temperature heat dissipation system 4 is connected in series with the second channel outlet of the water temperature heat dissipation system 4, the heat dissipation pipe inlet of the test motor controller 14, the heat dissipation pipe outlet of the test motor controller 14, the water cooling inlet of the test motor 22, the water cooling outlet of the test motor 22, and the second channel inlet of the water temperature heat dissipation system 4.

[0076] It should be noted that the motor control system 1 and each test bench unit can also be equipped with their own water temperature cooling system 4.

[0077] Furthermore, in one embodiment, the monitoring system 3 includes: a data acquisition and processing module 31, a Hall current sensor, a temperature sensor, and a torque sensor;

[0078] Temperature sensors are used to collect oil temperature information of the speed reducer;

[0079] The torque sensor is used to collect the output torque information of the speed reducer;

[0080] The Hall current sensor is used to collect the current information output by the motor control system 1;

[0081] The data acquisition and processing module 31 is communicatively connected to the Hall current sensor, temperature sensor, torque sensor and motor control system 1, respectively, and is used to acquire current information, oil temperature information, torque information and information of motor control system 1.

[0082] This configuration of monitoring system 3 allows for comprehensive collection of experimental data, providing a data basis for subsequent analysis of the reducer's performance based on the experimental data.

[0083] Furthermore, the monitoring system 3 also includes a wireless communication module 32: the monitoring system 3 communicates with a preset remote terminal through the wireless communication module 32, and is used to send experimental data to the remote terminal or obtain control commands sent by the remote terminal, and control the electric drive reducer experimental system based on the control commands.

[0084] In this way, relevant personnel can obtain the data collected by the monitoring system 3 through a remote terminal and analyze the performance of the reducer based on this data.

[0085] Specifically, the wireless communication module 32 can be a 4G network card, a 5G network card, a Bluetooth module, a Wi-Fi module, etc.; the data acquisition and processing module 31 can include: an industrial control computer, a CAN communication board, and a multi-functional data acquisition board; the CAN communication board is connected to the CAN communication interfaces of the 500KW battery simulator 12, the main test motor controller 13, and the auxiliary test motor controller 14 via CAN cables, and obtains equipment information and sends control commands through the equipment communication protocol; through the digital input, digital output, and analog input interfaces of the multi-functional data acquisition board, it obtains analog signals from the infrared temperature sensor and the torque sensor, and controls the start and stop of the water temperature cooling system 4 and the start and stop of the motor brake.

[0086] Furthermore, the monitoring system 3 uses a wireless communication module 32 to realize remote monitoring function, which can monitor the status of the test bench through a browser on any networked computer, and realize remote monitoring of parameters and status during the test process.

[0087] Furthermore, the torque sensor is a flange-type torque sensor with a mounting socket tooling connection. This sensor is a non-contact torque sensor, and there is no contact between the torque signal reading device on the fixed base and the torque disk. It can work stably for a long time. The sensor and the reducer are connected by a diaphragm coupling to eliminate vibration and axial error generated during installation and operation.

[0088] In one embodiment, the monitoring system 3 is communicatively connected to the battery simulator 12, the motor controller, and the main test motor 21 of the test bench unit 2, respectively. It collects current data from the battery simulator 12, the motor controller, and the main test motor 21, and determines the input power of the reducer based on this current data. This configuration allows for the calculation of the reducer's input power based on the current data from the battery simulator 12, the motor controller, and the main test motor 21, respectively. The input power obtained through these three methods is then aggregated to obtain the input power with the highest reliability. This allows for a more accurate determination of the input power, and consequently, a more accurate determination of the reducer's mechanical efficiency.

[0089] Specifically, the methods for obtaining current data information include connecting to the battery simulator 12, the motor controller, and the main test motor 21 control assembly respectively, and obtaining the data information provided by the control assembly.

[0090] Furthermore, obtaining the power of the main test and auxiliary test motors 22 can also include: connecting a Hall current sensor in series on each phase of the three-phase AC cable of the main test motor controller 13 and the auxiliary test motor controller 14. The Hall current sensors are connected to the data acquisition and processing module 31 through shielded signal cables. The data acquisition and processing module 31 obtains the power of the main test and auxiliary test motors 22 based on the data collected by the Hall current sensors. With this configuration, the solution provided in this application can obtain more comprehensive experimental data from multiple angles and in multiple ways, providing data support for subsequent experimental analysis.

[0091] Exemplary methods

[0092] Reference Figure 3 Regarding the experimental method for the electric drive reducer provided in this application, it should be noted that the implementing entity of the solution provided in this application can be a monitoring system, including:

[0093] S301, based on the parameter information of the reducer and the preset experimental strategy, adjusts the internal parameter information of the motor control system to match the motor control system with the reducer.

[0094] Specifically, firstly, based on the reducer's parameter information and the preset experimental strategy, the motor model and test voltage specifications are determined. Then, based on the motor model and test voltage specifications, the battery simulator is controlled to adjust appropriate voltage, current, power, and voltage ramp rate. The main test motor controller can also automatically identify the performance parameters of the connected motors. After identification, the main test motor controller is set to speed control mode, and the test motor controller is set to torque control mode. The reducer's parameter information and the preset experimental strategy can be pre-input by the experimenter.

[0095] Furthermore, the control strategies of the main test motor controller and the auxiliary test motor controller can be adjusted based on preset experimental strategies. Specifically, in practical applications, experimental strategies include multiple aspects such as no-load running-in, loading and overload testing, temperature rise testing, and high-speed testing. Depending on the selected experimental measurement, the main test motor controller and the auxiliary test motor controller need to output different currents to drive the main test motor and the auxiliary test motor to conduct the experiment.

[0096] In specific experiments, it is also necessary to send instructions to the water temperature controller to set the temperature control value and flow rate of the coolant in order to control the temperature of the electric drive reducer experimental system.

[0097] S302, Determine the experimental bench unit where the speed reducer is located;

[0098] Specifically, the methods for determining the experimental bench unit where the speed reducer is located include: obtaining the experimental bench indication information input by the user; and determining the experimental bench unit where the speed reducer is located based on the experimental bench indication information. During a specific experiment, after the experimenter has secured the speed reducer, they can input the experimental bench indication information into the monitoring system to indicate the experimental bench unit where the speed reducer is located.

[0099] S303, the motor control system, outputs an experimental signal that matches the reducer to the experimental bench unit where the reducer is located, so as to control the experimental bench unit to carry out the experiment;

[0100] It should be noted that the solution provided in this application can be performed with only one test bench unit at a time, or with multiple test bench units at the same time. This application does not limit the scope of the experiment.

[0101] Specifically, firstly, the brake of the main test motor is opened. After receiving the speed adjustment command sent by the monitoring system, the main test motor can increase from 0 rpm to the set speed within 2 seconds. The actual output torque, speed and power of the motor can be obtained from the controller through the CAN communication interface. After receiving the torque adjustment command sent by the monitoring system cabinet, the auxiliary test motor can also increase from 0 Nm to the set torque within 1 second. The reverse torque applied by the auxiliary test motor can be amplified by the pre-set auxiliary test reducer and then transmitted to the output end of the test reducer through the diaphragm coupling and torque sensor to apply arbitrary load to the test reducer.

[0102] S304, collect experimental data.

[0103] Specifically, experimental data can be collected during the experiment. This data may include: a temperature sensor to collect oil temperature information of the reducer; a torque sensor to collect output torque information of the reducer; a Hall current sensor to collect current information output by the motor control system; information sent by the motor control system; and other data collected and generated during the experiment that are not mentioned in this manual.

[0104] At this point, the driving power of the test specimen can be obtained by multiplying the power value obtained from the speed and torque of the motor at the input end of the test specimen (which can be calibrated and corrected with the motor power value collected by the power analyzer) by the speed ratio of the reducer. The actual transmission efficiency of this model of reducer can be obtained by comparing the power value obtained from the speed and torque measured by the torque sensor at the output end of the test specimen with the power value obtained from the speed and torque measured by the torque sensor at the output end of the test specimen. During the test, the speed of the main test reducer and the torque of the auxiliary test reducer are both digitally steplessly adjustable, and the temperature rise of the reducer is monitored in real time by a non-contact online infrared temperature sensor.

[0105] It should be noted that in the solution provided in this application, the electric drive reducer test system can receive control from a remote terminal connected to the communication network. The remote terminal sends signals to the monitoring system, and the monitoring system controls and regulates the entire electric drive reducer system based on these signals.

[0106] Compared to the solutions in the background art, the solution provided in this application has the following advantages. Firstly, it offers greater compatibility with the test specimen: no other structural changes are required; only the test bench unit needs to be replaced, and the corresponding connection component for the reducer under test needs to be found. The optimized calibration parameters of the reducer motor under test are uploaded to the controller, allowing type testing of any type of electric reducer to be performed on it. Furthermore, the solution provided in this application also features energy recovery, resulting in greater energy efficiency. Furthermore, by using multiple methods to determine the input efficiency, the efficiency detection accuracy is higher, allowing for more precise testing of the reducer's mechanical efficiency. Furthermore, remote monitoring and remote diagnostics are achieved through wireless communication components. Furthermore, by employing a centralized battery simulator, water circulation system, synchronous motor controller, power analyzer, and monitoring system, and through a test point distributor, the monitoring system can allocate test resources to any test point, enabling fatigue durability testing of various types of electric drive reducer assemblies on a single test bench. All operations are automated by software without manual intervention.

[0107] Exemplary computer program products and computer-readable storage media

[0108] In addition to the methods and apparatus described above, embodiments of this application may also be computer program products, which include computer program instructions that, when executed by a processor, cause the processor to perform the steps in the experimental methods for electric drive speed reducers according to various embodiments of this application as described in the "Exemplary Methods" section of this specification.

[0109] Computer program products can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0110] Furthermore, embodiments of this application may also be computer-readable storage media storing computer program instructions thereon, which, when executed by a processor, cause the processor to perform the steps in the experimental methods for electric drive speed reducers according to various embodiments of this application described in the "Exemplary Methods" section above.

[0111] Computer-readable storage media may take the form of any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may, for example, include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0112] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An experimental system for an electrically driven speed reducer, characterized in that, include: Motor control system, monitoring system, and at least two experimental bench units; The experimental bench unit is used to fix the reducer and drive the reducer to perform the experiment, wherein the reducers corresponding to each experimental bench unit are different from each other. A motor control system, which is connected to each of the experimental bench units, is used to control the experimental bench units to perform experiments. A monitoring system is used to collect experimental data of the speed reducer being tested on the experimental bench unit. The motor control system includes: a power supply, a battery simulator, and a motor controller. The power supply provides power to the battery simulator and the motor controller. The battery simulator simulates the battery corresponding to the speed reducer being tested. The motor controller is connected to the battery simulator and uses the power provided by the battery simulator to control the rotation of the motor on the experimental bench unit according to a preset control strategy. The motor controller includes: a main test motor controller and a secondary test motor controller. The main test motor controller is connected to the main test motor on the experimental bench unit and drives the main test motor. The reducer fixed on the test bench unit rotates; the auxiliary test motor controller is connected to the auxiliary test motor on the test bench unit, and is used to apply a reverse torque to prevent the reducer from rotating through the auxiliary test motor and to recover energy. The battery simulator has dual channels, with the first channel DC output connected to the DC input terminal of the main test motor controller and the second channel DC output connected to the DC input terminal of the auxiliary test motor controller. The three-phase AC output terminals of the main test motor controller and the auxiliary test motor controller are respectively connected to the input terminals of the main test and auxiliary test point distributors. The main test and auxiliary test point distributors have multiple sets of output ports, and each set of output ports is connected to the control assembly of the main test motor and the auxiliary test motor of the test bench unit.

2. The experimental system for an electric drive reducer according to claim 1, characterized in that, The experimental bench unit includes: a main test motor, a secondary test motor, the main body of the experimental bench unit, and at least one connecting component; The main body of the experimental bench unit is fixed to the reducer via the connecting component; The main test motor is connected to the input shaft of the reducer and is used to drive the reducer to rotate; The test motor is connected to the output shaft of the reducer and outputs torque to prevent the reducer from rotating.

3. The experimental system for an electric drive reducer according to claim 1, characterized in that, The monitoring system includes: a data acquisition and processing module, a Hall current sensor, a temperature sensor, and a torque sensor; The temperature sensor is used to collect the oil temperature information of the reducer; The torque sensor is used to collect the output torque information of the speed reducer; The Hall current sensor is used to collect the current information output by the motor control system; The data acquisition and processing module is communicatively connected to the Hall current sensor, the temperature sensor, the torque sensor, and the motor control system, respectively, and is used to acquire the current information, the oil temperature information, the torque information, and the information of the motor control system.

4. The experimental system for an electric drive reducer according to claim 1, characterized in that, The monitoring system is communicatively connected to the battery simulator, the motor controller, and the main test motor of the test bench unit, respectively, and is used to collect current data information of the battery simulator, the motor controller, and the main test motor, and determine the input power of the reducer based on the current data information.

5. The experimental system for an electric drive reducer according to claim 1, characterized in that, The experimental platform unit also includes a water-cooling system: The water-cooling system is used to cool the electric drive reducer experimental system.

6. The experimental system for an electric drive reducer according to claim 1, characterized in that, The monitoring system also includes a wireless communication module: The monitoring system communicates with a preset remote terminal through the wireless communication module, and is used to send the experimental data to the remote terminal or obtain the control commands sent by the remote terminal, and control the electric drive reducer experimental system based on the control commands.

7. A test method for an electrically driven speed reducer, characterized in that, include: Based on the parameter information of the reducer and the preset experimental strategy, the internal parameter information of the motor control system is adjusted so that the motor control system matches the reducer. Determine the experimental bench unit where the speed reducer is located; The motor control system outputs an experimental signal matching the reducer to the experimental bench unit where the reducer is located, so as to control the experimental bench unit to carry out the experiment; The experimental data collection process includes a motor control system comprising: a power supply, a battery simulator, and a motor controller; the power supply provides power to the battery simulator and the motor controller; the battery simulator simulates the battery corresponding to the reducer used in the experiment; the motor controller is connected to the battery simulator and uses the power provided by the battery simulator to control the rotation of the motor on the experimental bench unit according to a preset control strategy; the motor controller includes a main test motor controller and a secondary test motor controller; the main test motor controller is connected to the main test motor on the experimental bench unit and drives the motor fixed on the experimental bench unit via the main test motor. The reducer rotates; the auxiliary test motor controller is connected to the auxiliary test motor on the test bench unit, and is used to apply a reverse torque to prevent the reducer from rotating through the auxiliary test motor and to recover energy. The battery simulator has dual channels, with the first channel DC output connected to the DC input terminal of the main test motor controller and the second channel DC output connected to the DC input terminal of the auxiliary test motor controller. The three-phase AC output terminals of the main test motor controller and the auxiliary test motor controller are respectively connected to the input terminals of the main test and auxiliary test point distributors. The main test and auxiliary test point distributors have multiple sets of output ports, and each set of output ports is connected to the control assembly of the main test motor and the auxiliary test motor of the test bench unit.

8. The experimental method for the electric drive reducer according to claim 7, characterized in that, The experimental bench unit for determining the location of the speed reducer includes: Obtain the experimental bench instruction information input by the user; Based on the experimental bench indication information, the experimental bench unit where the speed reducer is located is determined.

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