Braking inertia rack detection system and method for electronic mechanical brake

Abstract

The invention provides a braking inertia rack detection system and method of an electronic mechanical brake. Relates to the technical field of vehicles and comprises a brake inertia rack, a pressure sensor and a controller. The braking inertia rack comprises a pressurization module and an inertia simulation module, and the braking inertia rack is used for installing an electronic mechanical brake (EMB) to be detected; the input end of the pressure sensor is connected with the pressurization module, the output end of the pressure sensor is connected with the controller, and the first output end of the controller is connected with the control end of the EMB. And the controller is used for responding to a pressure signal fed back by the pressure sensor, converting the pressure signal into a clamping force signal and sending the clamping force signal to the EMB, so that the EMB outputs a braking torque to the inertia simulation module for detection based on the clamping force signal. Therefore, the EMB braking experiment can be realized by introducing the pressure sensor and the controller based on the existing braking inertia rack, and the equipment transformation cost is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a test bench system and method for testing the braking inertia of an electromechanical brake. Background Technology

[0002] Currently, braking inertia test benches for brakes use hydraulic or pneumatic pressure as the medium for braking tests. However, with the advent of electromechanical brake (EMB) assemblies, there is no need to use hydraulic or pneumatic pressure as the medium for braking force transmission. Braking can be performed directly by controlling the EMB assembly through electrical signals.

[0003] However, the current brake inertia test bench does not have the function of directly controlling the EMB assembly through electrical signals, so it is impossible to conduct braking tests on electromechanical brakes using the current brake inertia test bench. Summary of the Invention

[0004] In view of this, this application provides a test bench system and method for testing the braking inertia of electromechanical brakes, aiming to solve the problem that hydraulic or pneumatic brake inertia test benches cannot be used to test the braking of electromechanical brakes.

[0005] In a first aspect, this application provides a test bench system for testing the braking inertia of an electromechanical brake, comprising: a brake braking inertia test bench, a pressure sensor, and a controller;

[0006] The braking inertia test bench includes a pressurization module and an inertia simulation module. The braking inertia test bench is used to mount the electromechanical brake (EMB) to be tested. The input terminal of the pressure sensor is connected to the pressurization module, the output terminal of the pressure sensor is connected to the controller, and the first output terminal of the controller is connected to the control terminal of the EMB.

[0007] The controller is configured to respond to the pressure signal fed back by the pressure sensor, convert the pressure signal into a clamping force signal, and send the clamping force signal to the EMB, so that the EMB outputs a braking torque to the inertia simulation module based on the clamping force signal.

[0008] Optionally, the controller is specifically configured to convert the pressure signal into a hydraulic signal based on a preset first correspondence, wherein the first correspondence is a correspondence between the pressure signal and the hydraulic signal; and to determine the clamping force signal based on the brake caliper cylinder diameter and the hydraulic signal.

[0009] Optionally, a power supply may also be included;

[0010] The power supply terminal is connected to the controller and the EMB.

[0011] Optionally, the brake inertia test bench further includes a host computer and a control cabinet; the host computer is connected to the control cabinet, and the first signal terminal of the control cabinet is connected to the control terminal of the inertia simulation module.

[0012] The host computer is used to respond to the start command, control the rotation of the flywheel in the inertia simulation module through the control cabinet based on the preset test program, and monitor the rotational speed of the flywheel.

[0013] Optionally, the second signal terminal of the control cabinet is connected to the control terminal of the pressurization module, and the second output terminal of the controller is connected to the host computer;

[0014] The host computer is used to control the pressurization module to pressurize to a set pressure when the flywheel speed in the inertia simulation module reaches a preset speed; and to receive the pressure signal fed back by the controller.

[0015] Optionally, the EMB is connected to the flywheel in the inertia simulation module, and a torque sensor is provided between the EMB and the flywheel. The output end of the torque sensor is connected to the control cabinet.

[0016] Optionally, the host computer includes a display interface for displaying a first parameter and a second parameter determined based on the first parameter. The first parameter includes one or more of the following: vehicle speed, temperature, pressure signal, and torque fed back by the torque sensor. The second parameter includes one or more of the following: friction coefficient and braking distance.

[0017] Optionally, the pressurization module employs hydraulic or pneumatic pressurization.

[0018] In a first aspect, this application provides a method for testing the braking inertia of an electromechanical brake on a test bench. The test bench includes a pressurization module and an inertia simulation module. The test bench is used to mount the electromechanical brake (EMB) to be tested. The pressurization module is connected to the input terminal of a pressure sensor, the output of the pressure sensor is connected to a controller, and the first output terminal of the controller is connected to the control terminal of the EMB. The method includes:

[0019] In response to the pressure signal fed back by the pressure sensor, the pressure signal is converted into a clamping force signal and sent to the EMB so that the EMB outputs a braking torque to the inertia simulation module based on the clamping force signal.

[0020] Optionally, converting the pressure signal into a clamping force signal includes: converting the pressure signal into a hydraulic signal based on a preset first correspondence, wherein the first correspondence is a correspondence between the pressure signal and the hydraulic signal; and determining the clamping force signal based on the brake caliper cylinder diameter and the hydraulic signal.

[0021] This application provides a braking inertia test bench system and method for electromechanical brakes. The system includes: a braking inertia test bench, a pressure sensor, and a controller. The braking inertia test bench includes a pressurization module and an inertia simulation module. The test bench is used to mount the electromechanical brake (EMB) to be tested. The input terminal of the pressure sensor is connected to the pressurization module, and the output terminal of the pressure sensor is connected to the controller. The first output terminal of the controller is connected to the control terminal of the EMB. The controller is used to respond to the pressure signal fed back by the pressure sensor, convert the pressure signal into a clamping force signal, and send the clamping force signal to the EMB, so that the EMB outputs a braking torque to the inertia simulation module based on the clamping force signal for detection. In this way, by acquiring the pressure signal from the pressurization module through the pressure sensor and converting the pressure signal into a clamping force signal through the controller, the EMB can be controlled. Thus, by introducing a pressure sensor and a controller, EMB braking tests can be performed without changing the existing braking inertia test procedures of the braking test bench, effectively reducing equipment modification costs and improving the feasibility and accuracy of testing electromechanical brakes on traditional braking inertia test benches. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a conventional hydraulic braking system provided in this application embodiment;

[0024] Figure 2 A schematic diagram of an electromechanical brake (EMB) system structure is provided for an embodiment of this application;

[0025] Figure 3 A schematic diagram of a hydraulically controlled braking inertia test bench provided for an embodiment of this application;

[0026] Figure 4 A schematic diagram of a test bench for detecting the braking inertia of an electromechanical brake, provided in an embodiment of this application;

[0027] Figure 5 This is a schematic diagram illustrating a first correspondence between a pressure signal and a hydraulic signal, provided in an embodiment of this application.

[0028] Figure 6 This is a flowchart illustrating a bench test method for detecting the braking inertia of an electromechanical brake, as provided in an embodiment of this application.

[0029] Explanation of the attached drawing numbers:

[0030] 11-First brake pedal; 12-Master cylinder booster assembly; 13-ABS / ESC system; 14-Front brake assembly; 15-Rear brake assembly; 21-Second brake pedal; 22-Pedal travel simulator; 23-EMB controller; 24-Brake unit; 31-Host computer; 33-Pressure unit; 34-Inertia simulation unit; 341-Flywheel unit; 342-Drive motor unit; 38-Test brake; 39-Control unit; 40-Test fixture; 41-Host computer; 42-Power supply; 43-Controller; 44-Pressure sensor; 45-Torque sensor; 46-Pressure module; 461-Pressure supply unit; 462-Pressure supply unit monitoring module; 47-Inertia simulation module; 471-Flywheel; 472-Drive motor; 48-EMB; 49-Control cabinet. Detailed Implementation

[0031] See Figure 1 The diagram shows a conventional hydraulic braking system. The braking process is as follows: when the first brake pedal 11 is depressed, the master cylinder booster assembly 12 generates corresponding brake hydraulic pressure. This brake hydraulic pressure is transmitted through brake lines such as the ABS / ESC system 13 to the front brake assembly 14 and the rear brake assembly 15, generating braking torque. This braking torque acts on the wheels, achieving vehicle deceleration or stopping. (See also...) Figure 2 The diagram shows the structure of an electromechanical brake (EMB) system. The braking process is as follows: when the second brake pedal 21 is pressed, the pedal stroke simulator 22 collects the pedal stroke data and transmits the signal to the EMB controller 23. The EMB controller 23 sends the corresponding braking force target signal to the EMB based on the pedal stroke signal. The braking unit 24 receives the braking force target signal and generates the corresponding clamping force, ultimately generating the braking torque.

[0032] Compared to traditional hydraulic braking systems that rely on fluid to transmit pressure, electromechanical brakes (EMBs) directly control the braking actuator via electrical signals, improving response speed and control accuracy. However, due to the years of development of hydraulic braking systems, corresponding testing standards and procedures have already been standardized. Updating the braking inertia test bench system and testing procedures would involve a massive amount of work and high modification costs, such as the hardware interface for EMB braking testing, the experimental procedures required for the host computer to perform braking tests on the EMB, and software control.

[0033] To address the aforementioned issues, the applicant provides a test bench system and method for testing the braking inertia of electromechanical brakes. This application, however, utilizes a test bench compatible with existing braking inertia test benches (see [link to test bench]). Figure 3 The schematic diagram of a hydraulically controlled braking inertia test bench illustrates that the host computer 31 controls the drive motor unit 342 in the inertia simulation unit 34 to drive the flywheel unit 341 to rotate via the control unit 39. When the preset speed is reached, the pressurization unit 33 pressurizes the test brake 38 to the set hydraulic pressure. The hydraulic pressure generates braking torque through the test brake 38 and outputs it to the inertia simulation unit 34 for braking. Seamless integration between the EMB and the braking inertia test bench can be achieved simply by integrating a pressure sensor into the pressurization module and configuring signal conversion logic in the controller. This method not only retains the original test system's operating procedures but also ensures the consistency and comparability of data acquisition such as pressure signals and braking torque, significantly shortening the EMB test deployment cycle and providing a low-cost, high-efficiency technical path for braking system upgrades.

[0034] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0035] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0036] Unless otherwise stated, the term "multiple" means two or more. In embodiments of this disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B. The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] See Figure 4 , Figure 4 A schematic diagram of a braking inertia test bench for an electromechanical brake provided in this application embodiment. The braking inertia test bench for an electromechanical brake includes: a brake braking inertia test bench, a pressure sensor 44, and a controller 43.

[0039] The braking inertia test bench includes a pressurization module 46 and an inertia simulation module 47. The braking inertia test bench is used to mount the electromechanical brake EMB48 to be tested. The input terminal of the pressure sensor 44 is connected to the pressurization module 46, and the output terminal of the pressure sensor 44 is connected to the controller 43. The first output terminal of the controller 43 is connected to the control terminal of the EMB48.

[0040] The aforementioned electromechanical brake EMB48 refers to a device that converts electrical energy into braking clamping force through purely mechanical means.

[0041] The aforementioned braking inertia test bench refers to a test device that simulates the inertia of a car's load and wheels when the brake disc, flywheel, and other devices rotate, and uses the rotational inertia of the brake disc, flywheel, and other devices to brake the flywheel, absorbing the flywheel's energy while testing various performance indicators of the brake.

[0042] The aforementioned pressure sensor 44 is used to monitor the hydraulic pressure applied by the pressurization module in real time.

[0043] Optionally, the pressurization module 46 can be pneumatic or hydraulic pressurization.

[0044] The controller described above is configured to respond to the pressure signal fed back by the pressure sensor 44, convert the pressure signal into a clamping force signal, and send the clamping force signal to the EMB 48, so that the EMB 48 can output a braking torque to the inertia simulation module for detection based on the clamping force signal.

[0045] Based on the above system, this application can accurately simulate the inertial load during vehicle braking through the inertia simulation module, achieving high-precision detection of the dynamic performance of the electromechanical brake EMB48, effectively improving the matching degree between the brake control response characteristics and actual working conditions. At the same time, the pressure sensor 44 collects the pressure signal output by the pressurization module and feeds it back to the controller so that the controller can convert the pressure signal into a clamping force signal, and monitor and feed back the pressure signal throughout the braking process to ensure the stability of the clamping force output. Thus, by introducing the pressure sensor 44 and the controller 43, the EMB braking test can be realized without changing the experimental procedure of the existing braking inertia test bench using the pressurization module, effectively reducing the equipment modification cost and improving the feasibility and accuracy of testing electromechanical brakes on traditional braking inertia test benches.

[0046] In the embodiments of this application, the above Figure 4 There are several possible implementations for converting the pressure signal into a clamping force signal in the controller, which will be described below. It should be noted that the implementations given below are merely illustrative examples and do not represent all implementations of the embodiments in this application.

[0047] In one example, the process by which controller 43 converts a pressure signal into a clamping force signal may include:

[0048] First, the pressure signal is converted into a hydraulic signal based on a preset first correspondence relationship, where the first correspondence relationship is the correspondence between the pressure signal and the hydraulic signal;

[0049] Optional, see Figure 5 The diagram shows a first correspondence between a pressure signal and a hydraulic signal. The pressure signal collected by the pressure sensor is mapped to the corresponding hydraulic signal according to the pre-calibrated first correspondence. Figure 5 The horizontal axis represents the pressure signal, and the vertical axis represents the hydraulic signal.

[0050] Then, the clamping force signal is determined based on the brake caliper cylinder diameter and the hydraulic signal.

[0051] Optionally, the formula for calculating the clamping force is as follows:

[0052] ;

[0053] In the above formula, F represents the clamping force, P represents the hydraulic signal, and d represents the brake caliper cylinder diameter. After calculating the clamping force signal using this formula, the controller transmits the clamping force signal to the EMB in real time to ensure that the output of the braking torque is consistent with the set operating conditions.

[0054] In this way, the system can dynamically adjust the first correspondence and cylinder diameter parameters according to the braking requirements of different vehicle models, improve the adaptation accuracy, have strong compatibility, and be easy to integrate into existing testing platforms.

[0055] In another example, the controller can also be directly configured with a second mapping between pressure signals and clamping force signals, directly mapping the pressure signals to clamping force signals. This method eliminates the need for intermediate conversion steps, further improving signal processing efficiency and response speed.

[0056] Optionally, the system may further include a power supply 42, the power supply terminal of which is connected to the controller and the EMB, for providing a stable operating voltage to the controller and the EMB.

[0057] In the embodiments of this application, the above Figure 4 The braking inertia test bench can be implemented in several ways, which will be described below. It should be noted that the implementation methods given below are only illustrative examples and do not represent all implementation methods of the embodiments of this application.

[0058] In one possible implementation, see Figure 4 The system further includes a host computer 41 and a control cabinet 49 in the brake inertia test bench. The host computer 41 is connected to the control cabinet 49, and the first signal terminal of the control cabinet 49 is connected to the control terminal of the inertia simulation module 47. The host computer is used to respond to a start command, based on a preset test program, to control the rotation of the flywheel 471 in the inertia simulation module 47 through the control cabinet 49, and to monitor the rotational speed of the flywheel 471.

[0059] Optionally, the aforementioned associated simulation module may include a flywheel 471 and a drive motor 472 that drives the flywheel 471 to rotate. The drive motor 472 receives command signals from the control cabinet 49 and adjusts the speed of the flywheel 471 to simulate the inertia characteristics of vehicles of different masses. By precisely controlling the output torque and speed curve of the motor, a high-precision reproduction of actual driving conditions is achieved. At the same time, the rotational state of the flywheel 471 is fed back to the host computer in real time by a speed sensor through the control cabinet, forming a closed-loop control.

[0060] In one possible implementation, the second signal terminal of the control cabinet 49 is connected to the control terminal of the pressurization module 46, and the second output terminal of the controller 43 is connected to the host computer 41. The host computer 41 is used to control the pressurization module 46 to pressurize to a set pressure when the rotational speed of the flywheel 471 in the inertia simulation module 47 reaches a preset speed. The controller monitors the pressure signal of the pressurization module in real time and feeds the pressure signal back to the host computer to ensure that the pressure of the pressurization module is stable within the target range.

[0061] Optionally, the pressurization module 46 may include a pressure supply unit 461 (e.g., a hydraulic cylinder or a pneumatic cylinder) and a pressure supply unit monitoring module 462. The pressure sensor 44 and the control cabinet 49 are both connected to the pressure supply unit monitoring module to monitor and control the pressure supply unit.

[0062] In one possible implementation, the EMB48 is connected to the flywheel 471 in the inertia simulation module 47, and a torque sensor 45 is provided between the EMB48 and the flywheel 471. The output of the torque sensor 45 is connected to the control cabinet 49.

[0063] The torque sensor 45 uploads the monitored torque to the host computer 41 via the control cabinet 49, allowing the host computer to obtain real-time torque change data during braking and analyze braking performance in conjunction with the flywheel speed signal. Furthermore, the host computer can simultaneously record vehicle speed, torque, pressure, and clamping force data during braking, achieving full-process visual monitoring and analysis, and thus evaluating EMB braking stability.

[0064] In one possible implementation, the host computer can also collect temperature data during the braking process via temperature sensors to monitor the thermal fade of the EMB brake in real time. Combined with preset safety thresholds, when the temperature exceeds the set range, the host computer automatically triggers an alarm or adjusts the test procedure to prevent equipment damage. Simultaneously, the analysis of temperature change trends in conjunction with parameters such as torque and pressure allows for accurate assessment of the braking performance stability and reliability of the EMB under different operating conditions, improving the scientific rigor and comprehensiveness of the test results.

[0065] In one possible implementation, the host computer includes a display interface for displaying a first parameter and a second parameter determined based on the first parameter. The first parameter includes one or more of the following: vehicle speed, temperature, pressure signal, and torque fed back by a torque sensor. The second parameter includes one or more of the following: coefficient of friction and braking distance.

[0066] Based on the above statements, taking the hydraulic pressurization of the pressurization module as an example, the above... Figure 4 The specific experimental process of the system can be as follows:

[0067] The test program (vehicle speed, brake hydraulic pressure, temperature, braking cycle, etc.) is set via the host computer 41. After the test is started, the control cabinet 49 controls the drive motor 472 to drive the flywheel 471 to rotate. Once the set speed is reached, the pressurization module 46 pressurizes the brake to the set hydraulic pressure. The external pressure sensor 44 detects the brake hydraulic system pressure in real time and feeds back the pressure signal to the controller 43. The controller 43 receives the feedback pressure signal, converts it into a brake clamping force signal, and outputs it to the EMB 48. The EMB 48 receives the brake clamping force signal and generates clamping force, which clamps the brake disc and generates braking torque, which is transmitted to the torque sensor 45 through the test fixture 40. Data during the test (vehicle speed, pressure signal, torque, temperature, etc.) is collected, and data such as the friction coefficient and braking distance are calculated. Of course, real-time clamping force, current, piston stroke, and other data of the test EMB brake can also be collected. The data is visualized and stored via the host computer for subsequent analysis. Thus, multi-parameter analysis can more effectively identify the trend of braking performance changes, evaluate the response characteristics and stability of EMB under different operating conditions, effectively verify the rationality of EMB design and the reliability of control strategy, and provide data support for optimizing braking performance.

[0068] The above describes some specific implementations of a braking inertia test bench system for an electromechanical brake provided in this application. Based on this, this application also provides a corresponding method. The apparatus provided in this application will be described below from the perspective of functional modularity.

[0069] See Figure 6 The diagram shows a flowchart of a method for testing the braking inertia of an electromechanical brake on a test bench. The method involves using a brake inertia test bench, which includes a pressurization module and an inertia simulation module. The test bench is used to mount the electromechanical brake (EMB) to be tested. The pressurization module is connected to the input terminal of a pressure sensor, the output of the pressure sensor is connected to a controller, and the first output terminal of the controller is connected to the control terminal of the EMB. The method includes:

[0070] S601. In response to the pressure signal fed back by the pressure sensor, the pressure signal is converted into a hydraulic signal based on a preset first correspondence relationship;

[0071] The first correspondence is the correspondence between pressure signals and hydraulic signals;

[0072] S602. Determine the clamping force signal based on the brake caliper cylinder diameter and the hydraulic signal;

[0073] S603. The clamping force signal is sent to the EMB so that the EMB outputs braking torque to the inertia simulation module based on the clamping force signal.

[0074] Based on the above steps S601-S603, this application can realize EMB braking test by introducing pressure sensor and controller without changing the experimental procedure of the existing braking inertia test bench, effectively reducing equipment modification cost and improving the feasibility and accuracy of testing electromechanical brakes on traditional braking inertia test benches.

[0075] This application also provides corresponding devices and computer storage media for implementing the solutions provided in this application.

[0076] The device includes a memory and a processor. The memory stores instructions or code, and the processor executes the instructions or code to enable the device to perform a bench test method for the braking inertia of an electromechanical brake as described in any embodiment of this application.

[0077] The computer storage medium stores code. When the code is executed, the device running the code implements a bench test method for the braking inertia of an electromechanical brake as described in any embodiment of this application.

[0078] In the embodiments of this application, the terms "first" and "second" (if they exist) are used only as name identifiers and do not represent the order of first and second.

[0079] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the methods of the above embodiments can be implemented by means of software plus a general-purpose hardware platform. Based on this understanding, the technical solution of this application can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as a read-only memory (ROM) / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network communication device such as a router) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0080] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the method embodiments are basically similar to the system embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the system embodiments. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0081] The above description is merely an exemplary implementation of this application and is not intended to limit the scope of protection of this application.

Claims

1. A test bench system for detecting the braking inertia of an electromechanical brake, characterized in that, include: Braking inertia test bench, pressure sensor and controller; The braking inertia test bench includes a pressurization module and an inertia simulation module. The braking inertia test bench is used to mount the electromechanical brake (EMB) to be tested. The input terminal of the pressure sensor is connected to the pressurization module, the output terminal of the pressure sensor is connected to the controller, and the first output terminal of the controller is connected to the control terminal of the EMB. The controller is configured to respond to the pressure signal fed back by the pressure sensor, convert the pressure signal into a clamping force signal, and send the clamping force signal to the EMB, so that the EMB outputs a braking torque to the inertia simulation module based on the clamping force signal.

2. The system according to claim 1, characterized in that, The controller is specifically used to convert the pressure signal into a hydraulic signal based on a preset first correspondence relationship, wherein the first correspondence relationship is the correspondence between the pressure signal and the hydraulic signal; and to determine the clamping force signal based on the brake caliper cylinder diameter and the hydraulic signal.

3. The system according to claim 1, characterized in that, It also includes the power supply; The power supply terminal is connected to the controller and the EMB.

4. The system according to claim 1, characterized in that, The brake inertia test bench also includes a host computer and a control cabinet; the host computer is connected to the control cabinet, and the first signal terminal of the control cabinet is connected to the control terminal of the inertia simulation module. The host computer is used to respond to the start command, control the rotation of the flywheel in the inertia simulation module through the control cabinet based on the preset test program, and monitor the rotational speed of the flywheel.

5. The system according to claim 4, characterized in that, The second signal terminal of the control cabinet is connected to the control terminal of the pressurization module, and the second output terminal of the controller is connected to the host computer. The host computer is used to control the pressurization module to pressurize to a set pressure when the flywheel speed in the inertia simulation module reaches a preset speed; and to receive the pressure signal fed back by the controller.

6. The system according to claim 5, characterized in that, The EMB is connected to the flywheel in the inertia simulation module, and a torque sensor is installed between the EMB and the flywheel. The output of the torque sensor is connected to the control cabinet.

7. The system according to claim 6, characterized in that, The host computer includes a display interface for displaying a first parameter and a second parameter determined based on the first parameter. The first parameter includes one or more of the following: vehicle speed, temperature, pressure signal, and torque fed back by the torque sensor. The second parameter includes one or more of the following: friction coefficient and braking distance.

8. The system according to any one of claims 1-7, characterized in that, The pressurization module uses hydraulic or pneumatic pressurization.

9. A bench test method for the braking inertia of an electromechanical brake, characterized in that, A braking inertia test bench for brakes, the braking inertia test bench includes a pressurization module and an inertia simulation module, the braking inertia test bench is used to mount the electromechanical brake (EMB) to be tested; The pressurization module is connected to the input terminal of the pressure sensor, the output terminal of the pressure sensor is connected to the controller, and the first output terminal of the controller is connected to the control terminal of the EMB. The method includes: In response to the pressure signal fed back by the pressure sensor, the pressure signal is converted into a clamping force signal and sent to the EMB so that the EMB outputs a braking torque to the inertia simulation module based on the clamping force signal.

10. The method according to claim 9, characterized in that, The step of converting the pressure signal into a clamping force signal includes: converting the pressure signal into a hydraulic signal based on a preset first correspondence, wherein the first correspondence is a correspondence between the pressure signal and the hydraulic signal; and determining the clamping force signal based on the brake caliper cylinder diameter and the hydraulic signal.

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