Chassis testing system
By simulating vehicle dynamic loads and environmental conditions through a chassis testing system, the problem of low efficiency in integrated chassis testing in existing technologies is solved, and efficient testing of the dynamic and static functions of the chassis system is achieved.
Patent Information
- Application Number
- CN202323506277.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2033-12-21
AI Technical Summary
Existing technologies lack effective testing methods to evaluate the dynamic and static functions of integrated chassis. In particular, the yellow-board test bench cannot simulate the dynamic operating conditions of electric drive systems, resulting in low testing efficiency.
A chassis testing system is provided, including a vehicle dynamic load simulation device and a controller. By simulating vehicle dynamic load signals and feedback signals, combined with an environmental chamber and charging equipment, dynamic and static functional tests of an integrated chassis can be achieved.
It enables dynamic functional testing of the integrated chassis, improves testing efficiency, supports automated testing, and reduces costs.
Smart Images
Figure CN223796263U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of testing technology, and in particular to a chassis testing system. Background Technology
[0002] With the continuous development of autonomous driving technology, integrated chassis technology has emerged. In order to improve vehicle performance and safety, it is necessary to test integrated chassis. However, as an emerging technology, there is currently no suitable testing scheme for integrated chassis.
[0003] Therefore, a solution for testing integrated chassis is needed. Utility Model Content
[0004] This application provides a chassis testing system that can perform testing on an integrated chassis.
[0005] In a first aspect, this application provides a chassis testing system, comprising: a vehicle dynamic load simulation device connected to a chassis system; a controller electrically connected to both the vehicle dynamic load simulation device and the chassis system, for sending a vehicle dynamic load simulation signal to the vehicle dynamic load simulation device; the vehicle dynamic load simulation device for simulating vehicle dynamic load based on the vehicle dynamic load simulation signal; and the controller for receiving a feedback signal from the chassis system, the feedback signal being generated in response to the vehicle dynamic load simulation device simulating vehicle dynamic load, and the feedback signal being used to determine the test result of the chassis system.
[0006] Therefore, the controller can send a vehicle dynamic load simulation signal to the vehicle dynamic load simulation device, so that the vehicle dynamic load simulation device can simulate the vehicle dynamic load based on the vehicle dynamic load simulation signal, and receive the feedback signal generated by the chassis system in response to the vehicle dynamic load simulation device. Thus, the test result of the chassis system can be determined based on the feedback signal, and the test of the integrated chassis can be realized.
[0007] In some embodiments, the vehicle dynamic load simulation device includes: a wheel simulation device, installed on the wheel mounting end of the half-shaft of the chassis system, electrically connected to the controller, for receiving wheel simulation signals sent by the controller, and simulating wheels based on the wheel simulation signals.
[0008] In this way, by simulating wheel loads using wheel simulation equipment, the dynamic functions of the integrated chassis can be tested.
[0009] In some embodiments, the wheel simulation device includes: a dynamometer, mounted on the wheel mounting end of the half-shaft of the chassis system, and electrically connected to a controller.
[0010] Therefore, using a dynamometer as a wheel simulation device can make the wheel simulation effect more realistic.
[0011] In some embodiments, the chassis testing system includes: a steering tie rod simulation device, electrically connected to the controller and the chassis system respectively, for receiving steering tie rod simulation signals sent by the controller and simulating steering tie rods based on the steering tie rod simulation signals.
[0012] Thus, by simulating the steering tie rod load using a steering tie rod simulation device, the dynamic functions of the integrated chassis can be tested.
[0013] In some embodiments, the steering tie rod simulation device includes a motor electrically connected to both the controller and the chassis system.
[0014] Therefore, using a motor as a steering tie rod simulation device can make the steering tie rod simulation effect more realistic.
[0015] In some embodiments, the controller includes: a simulation system electrically connected to the vehicle dynamic load control system, for generating a vehicle dynamic load simulation signal and sending the vehicle dynamic load simulation signal to the vehicle dynamic load control system; and a vehicle dynamic load control system electrically connected to the vehicle dynamic load simulation device, for sending the vehicle dynamic load simulation signal to the vehicle dynamic load simulation device.
[0016] Since most manufacturers only produce chassis systems and not complete vehicles, it is difficult to build a complete vehicle test bench to test the chassis system. However, in the embodiments of this application, a simulation model is built by a simulation system to simulate the signals of the vehicle body and interact with the chassis system. Only the chassis system is used as the test object, without the need for vehicle body parts or the construction of a complete vehicle test bench, which greatly facilitates the testing of the chassis system.
[0017] In some embodiments, the chassis testing system further includes an environmental chamber electrically connected to the controller for receiving environmental simulation signals sent by the controller, wherein the chassis system is located inside the environmental chamber.
[0018] In this way, by setting up an environmental chamber, the performance of the chassis system can be tested when it is in different environments.
[0019] In some embodiments, the environmental chamber includes: a temperature chamber electrically connected to a controller for receiving a temperature analog signal sent by the controller, and a chassis system located inside the temperature chamber.
[0020] Thus, by setting up a temperature chamber, the performance of the chassis system can be tested in different temperature environments, such as low temperature, normal temperature, and / or high temperature environments.
[0021] In some embodiments, the chassis testing system further includes a charging device electrically connected to the controller and the chassis system, respectively, for receiving a charging control signal sent by the controller and charging the chassis system based on the charging control signal.
[0022] In this way, the static functions of the integrated chassis can be tested through the charging equipment.
[0023] In some embodiments, the controller includes a host computer, which includes: an automation system electrically connected to the control system; the control system electrically connected to the chassis system, the environmental compartment, the charging equipment, and the vehicle dynamic load control system; a simulation system electrically connected to the vehicle dynamic load control system; and the vehicle dynamic load control system electrically connected to the vehicle dynamic load simulation equipment.
[0024] In this way, the chassis system can be automatically tested through a host computer, which simplifies the structure of the chassis testing system and reduces costs.
[0025] In some embodiments, the controller includes a host computer and a slave computer; the host computer includes an automation system electrically connected to the control system; the control system is electrically connected to the chassis system, the environmental compartment, the charging equipment, and the vehicle dynamic load control system in the slave computer; the slave computer includes a simulation system electrically connected to the vehicle dynamic load control system; the vehicle dynamic load control system is electrically connected to the vehicle dynamic load simulation device.
[0026] In this way, the host computer can be electrically connected to the slave computer. The host computer and the slave computer can exchange data through Ethernet communication.
[0027] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0029] Figure 1 One of the structural schematic diagrams of a chassis testing system provided in some embodiments of this application;
[0030] Figure 2 A schematic diagram of the structure of a chassis system provided in some embodiments of this application;
[0031] Figure 3 This is a second schematic diagram of the structure of a chassis testing system provided in some embodiments of this application;
[0032] Figure 4 A third schematic diagram of the structure of a chassis testing system provided in some embodiments of this application;
[0033] Figure 5 Fourth schematic diagram of a chassis testing system provided in some embodiments of this application;
[0034] Figure 6 Fifth schematic diagram of a chassis testing system provided in some embodiments of this application;
[0035] Figure 7 A schematic diagram of the structure of a chassis testing system provided in some embodiments of this application is shown in Figure 6.
[0036] Figure 8 This is the seventh schematic diagram of a chassis testing system provided in some embodiments of this application. Detailed Implementation
[0037] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.
[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.
[0039] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.
[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0041] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0042] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).
[0043] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0044] In related technologies, the yellow plate test bench can connect the battery, main controller, sensors, actuators and wiring harness of a pure electric vehicle, and is mainly used to test the static functions of pure electric vehicles.
[0045] However, the flatbed truck test bench cannot perform dynamic operating condition testing because it lacks an electric drive system connection, or even if connected, there is no electric drive load. Since the core function of an integrated chassis is dynamic operation, the flatbed truck test bench cannot test this core function. Furthermore, the flatbed truck test bench requires manual testing, resulting in very low testing efficiency.
[0046] Based on this, embodiments of this application provide a chassis testing system that can send a vehicle dynamic load simulation signal to a vehicle dynamic load simulation device through a controller, so that the vehicle dynamic load simulation device can simulate the vehicle dynamic load based on the vehicle dynamic load simulation signal, and receive feedback signals generated by the chassis system in response to the vehicle dynamic load simulation device simulating the vehicle dynamic load, thereby determining the test results of the chassis system based on the feedback signal, and realizing the testing of the integrated chassis.
[0047] Since the vehicle dynamic load simulation device in this embodiment can simulate vehicle dynamic load, it can be used to test the dynamic functions of the integrated chassis. Furthermore, the chassis testing system provided in this embodiment can automate testing, improving testing efficiency.
[0048] Of course, the chassis testing system provided in this application embodiment also supports manual testing.
[0049] The chassis testing system provided in the embodiments of this application will be described in detail below.
[0050] Figure 1 This is a schematic diagram of the structure of a chassis testing system provided in some embodiments of this application, such as... Figure 1 As shown, the chassis testing system 100 may include: a vehicle dynamic load simulation device 110 and a controller 120.
[0051] Among them, the vehicle dynamic load simulation device 110 is connected to the chassis system 200;
[0052] The controller 120 is electrically connected to the vehicle dynamic load simulation device 110 and the chassis system 200 respectively, and is used to send vehicle dynamic load simulation signals to the vehicle dynamic load simulation device 110.
[0053] The vehicle dynamic load simulation device 110 is used to simulate vehicle dynamic load based on vehicle dynamic load simulation signals;
[0054] The controller 120 is also used to receive feedback signals from the chassis system 200.
[0055] Here, the vehicle dynamic load simulation signal can be the signal used to control the vehicle dynamic load simulation device 110 to simulate the vehicle dynamic load.
[0056] The vehicle dynamic load simulation device 110 can simulate the dynamic load of a real vehicle.
[0057] The chassis system 200 can be an integrated chassis system.
[0058] The vehicle dynamic load simulation device 110 may include electrical and / or mechanical connections with the chassis system 200.
[0059] The feedback signal may be generated in response to the vehicle dynamic load simulation device 110 simulating the vehicle dynamic load, and the feedback signal may be used to determine the test results of the chassis system 200.
[0060] Specifically, the controller 120 can send a vehicle dynamic load simulation signal to the vehicle dynamic load simulation device 110. The vehicle dynamic load simulation device 110 can simulate the vehicle dynamic load based on the vehicle dynamic load simulation signal. The chassis system 200 can generate a feedback signal in response to the vehicle dynamic load simulation device 110 simulating the vehicle dynamic load and send the feedback signal to the controller 120. Then, the controller 120 can determine the test result of the chassis system 200 based on the feedback signal.
[0061] In this way, by simulating the dynamic load of a vehicle using a vehicle dynamic load simulation device, the dynamic functions of the integrated chassis can be tested.
[0062] For example, such as Figure 2 As shown, the integrated chassis system may include a steering control system 201, a smart integrated chassis controller (SICC) 202, a thermal management control system 203, a three-in-one electric drive system 204, an N-in-one electronic control system 205, an energy compartment 206, a thermal management system 207, a braking control system 208, an on-board charger (OBC) / direct current converter (DCDC) control system 209, a low-voltage battery and control system 210, and an on-board diagnostic (OBD) interface 211. It encompasses the functions of the vehicle's three-electric system (battery, motor, and electronic control), chassis system, and thermal management system.
[0063] Therefore, the controller can send a vehicle dynamic load simulation signal to the vehicle dynamic load simulation device, so that the vehicle dynamic load simulation device can simulate the vehicle dynamic load based on the vehicle dynamic load simulation signal, and receive the feedback signal generated by the chassis system in response to the vehicle dynamic load simulation device. Thus, the test result of the chassis system can be determined based on the feedback signal, and the test of the integrated chassis can be realized.
[0064] In some embodiments of this application, such as Figure 3 As shown, the vehicle dynamic load simulation device 110 may include:
[0065] The wheel simulation device 111 is installed on the wheel mounting end of the half-shaft of the chassis system 200 and is electrically connected to the controller 120. It is used to receive the wheel simulation signal sent by the controller 120 and simulate the wheel based on the wheel simulation signal.
[0066] Here, the wheel simulation signal can be the signal that controls the wheel simulation device 111 to simulate the wheel.
[0067] The wheel simulation device 111 can be mechanically connected to the chassis system 200. The wheel simulation device 111 can simulate the wheels of the entire vehicle and simulate the force and load conditions of the wheels. Specifically, it can simulate the resistance experienced by the chassis, including the friction between the wheels and the ground and the air resistance experienced by the chassis.
[0068] The wheel mounting end of the half-shaft of the chassis system 200 can be the end used to mount the wheel on an actual vehicle.
[0069] The number of wheel simulation devices 111 can be the same as the number of half-shafts included in the chassis system 200.
[0070] For example, the chassis system 200 may include four half-axles, and the vehicle dynamic load simulation device 110 may include four wheel simulation devices 111. Each half-axle may have a wheel simulation device 111 installed at its wheel mounting end, thereby simulating the four wheels of the vehicle through the four wheel simulation devices 111.
[0071] Specifically, the controller 120 can send wheel simulation signals to the wheel simulation device 111. The wheel simulation device 111 can simulate the resistance experienced by the chassis during vehicle operation based on the wheel simulation signals, including the friction between the wheels and the ground and the air resistance experienced by the chassis. The chassis system 200 can generate feedback signals in response to the wheel simulation device 111 simulating the wheels and send the feedback signals to the controller 120. Then, the controller 120 can determine the test results of the chassis system 200 based on the feedback signals.
[0072] In this way, by simulating wheel loads using wheel simulation equipment, the dynamic functions of the integrated chassis can be tested.
[0073] In some embodiments of this application, the wheel simulation device may include:
[0074] The dynamometer is installed at the wheel mounting end of the half-shaft of the chassis system and is electrically connected to the controller.
[0075] Here, the dynamometer and chassis system can be mechanically connected. The dynamometer can be a low-inertia permanent magnet synchronous dynamometer.
[0076] Specifically, the controller can send wheel simulation signals to the dynamometer. The dynamometer can simulate the friction between the wheels and the ground when the vehicle is in motion based on the wheel simulation signals. The chassis system can respond to the dynamometer's simulated wheels by generating feedback signals and sending these feedback signals to the controller. The controller can then determine the test results of the chassis system based on these feedback signals.
[0077] Therefore, using a dynamometer as a wheel simulation device can make the wheel simulation effect more realistic.
[0078] In some embodiments of this application, such as Figure 4 As shown, the vehicle dynamic load simulation device 110 may include:
[0079] The steering tie rod simulation device 112 is electrically connected to the controller 120 and the chassis system 200, respectively, and is used to receive the steering tie rod simulation signal sent by the controller 120 and simulate the steering tie rod based on the steering tie rod simulation signal.
[0080] Here, the steering tie rod simulation signal can be the signal used to control the steering tie rod simulation device 112 to simulate the steering tie rod.
[0081] The steering tie rod simulation device 112 can be electrically connected to the chassis system 200. Specifically, the steering tie rod simulation device 112 can be electrically connected to the steering control system in the chassis system 200.
[0082] The steering tie rod simulation device 112 can simulate the steering tie rods of the whole vehicle. Specifically, it can simulate the forces on the steering tie rods when the vehicle is turning.
[0083] Specifically, the controller 120 can send a steering tie rod simulation signal to the steering tie rod simulation device 112. The steering tie rod simulation device 112 can simulate the force on the steering tie rod when the vehicle is turning based on the steering tie rod simulation signal. The chassis system 200 can generate a feedback signal in response to the steering tie rod simulation device 112 simulating the steering tie rod and send the feedback signal to the controller 120. Then, the controller 120 can determine the test result of the chassis system 200 based on the feedback signal.
[0084] Thus, by simulating the steering tie rod load using a steering tie rod simulation device, the dynamic functions of the integrated chassis can be tested.
[0085] In some embodiments of this application, the steering tie rod simulation device may include:
[0086] The motor is electrically connected to both the controller and the chassis system.
[0087] Here, the controller can send a steering tie rod simulation signal to the motor. The motor can simulate the force on the steering tie rod when the vehicle is turning based on the steering tie rod simulation signal. The chassis system can respond to the motor to generate a feedback signal simulating the steering tie rod and send the feedback signal to the controller. The controller can then determine the test results of the chassis system based on the feedback signal.
[0088] Therefore, using a motor as a steering tie rod simulation device can make the steering tie rod simulation effect more realistic.
[0089] In some embodiments of this application, such as Figure 5 As shown, the controller 120 may include:
[0090] The simulation system 121 is electrically connected to the vehicle dynamic load control system 122 and is used to generate vehicle dynamic load simulation signals and send vehicle dynamic load simulation signals to the vehicle dynamic load control system 122.
[0091] The vehicle dynamic load control system 122 is electrically connected to the vehicle dynamic load simulation device 110 and is used to send vehicle dynamic load simulation signals to the vehicle dynamic load simulation device 110.
[0092] Here, the simulation system 121 can generate vehicle dynamic load simulation signals through dynamics and scenario simulation software.
[0093] The vehicle dynamic load simulation signal may include wheel simulation signals and / or steering tie rod simulation signals.
[0094] The vehicle dynamic load simulation device 110 may include wheel simulation device and / or steering tie rod simulation device.
[0095] The vehicle dynamic load control system 122 may include a steering tie rod control system and / or a wheel control system. The steering tie rod control system can control the steering tie rod simulation device via steering tie rod control software. The wheel control system can control the wheel simulation device via wheel control software. The steering tie rod control system may include a motor control system. The wheel control system may include a dynamometer control system.
[0096] Specifically, the simulation system 121 can generate a vehicle dynamic load simulation signal and send the vehicle dynamic load simulation signal to the vehicle dynamic load control system 122. The vehicle dynamic load control system 122 can send the vehicle dynamic load simulation signal to the vehicle dynamic load simulation device 110 so that the vehicle dynamic load simulation device 110 can simulate the vehicle dynamic load based on the vehicle dynamic load simulation signal.
[0097] If the vehicle dynamic load simulation device 110 includes a wheel simulation device, the simulation system 121 can generate a wheel simulation signal and send the wheel simulation signal to the wheel control system. The wheel control system can send the wheel simulation signal to the wheel simulation device so that the wheel simulation device can simulate the wheel based on the wheel simulation signal.
[0098] If the vehicle dynamic load simulation device 110 includes a steering tie rod simulation device, the simulation system 121 can generate a steering tie rod simulation signal and send the steering tie rod simulation signal to the steering tie rod control system. The steering tie rod control system can send the steering tie rod simulation signal to the steering tie rod simulation device so that the steering tie rod simulation device can simulate the steering tie rod based on the steering tie rod simulation signal.
[0099] Since most manufacturers only produce chassis systems and not complete vehicles, it is difficult to build a complete vehicle test bench to test the chassis system. However, in the embodiments of this application, a simulation model is built by a simulation system to simulate the signals of the vehicle body and interact with the chassis system. Only the chassis system is used as the test object, without the need for vehicle body parts or the construction of a complete vehicle test bench, which greatly facilitates the testing of the chassis system.
[0100] In some embodiments of this application, such as Figure 6As shown, the chassis testing system 100 may also include:
[0101] The environmental chamber 130 is electrically connected to the controller 120 and is used to receive environmental simulation signals sent by the controller 120.
[0102] Here, the environmental chamber 130 may include a temperature environmental chamber and / or a humidity environmental chamber. The chassis system 200 may be located within the environmental chamber 130.
[0103] It should be noted that chassis system 200 is not part of chassis test system 100. Figure 6 The chassis system 200 is framed within the chassis test system 100 only to show that the environmental compartment 130 is included within the chassis test system 100, and the chassis system 200 is located within the environmental compartment 130.
[0104] Specifically, the controller 120 can send an environmental simulation signal to the environmental chamber 130, which can then simulate a temperature and / or humidity environment based on the signal.
[0105] In this way, by setting up an environmental chamber, the performance of the chassis system can be tested when it is in different environments.
[0106] In some embodiments of this application, the environmental chamber may include:
[0107] The temperature chamber is electrically connected to the controller and is used to receive the temperature analog signal sent by the controller.
[0108] Here, the environmental chamber can include a temperature environment chamber, also known as a temperature chamber. The chassis system can be located inside the temperature chamber.
[0109] Specifically, the controller can send a temperature simulation signal to the temperature chamber, which can then simulate a temperature environment based on the signal, including low temperature, normal temperature, and / or high temperature environments.
[0110] Thus, by setting up a temperature chamber, the performance of the chassis system can be tested in different temperature environments, such as low temperature, normal temperature, and / or high temperature environments.
[0111] In some embodiments of this application, such as Figure 7 As shown, the chassis testing system 100 may also include:
[0112] The charging device 140 is electrically connected to the controller 120 and the chassis system 200 respectively, and is used to receive the charging control signal sent by the controller 120 and charge the chassis system 200 based on the charging control signal.
[0113] Here, the charging device 140 can be a power source. The charging device 140 can be electrically connected to the charging port of the chassis system 200, and the charging port of the chassis system 200 can be electrically connected to the OBC / DCDC control system of the chassis system 200.
[0114] The charging control signal can be a signal that controls the charging device 140 to charge the chassis system 200. If the charging device 140 does not receive the charging control signal, it may choose not to charge the chassis system 200.
[0115] During the testing of some functions of the chassis system, it may be necessary to charge the chassis system 200. At this time, the chassis system 200 can be charged through the charging device 140.
[0116] Specifically, the controller 120 can send a charging control signal to the charging device 140, and the charging device 140 can perform AC charging or DC charging for the chassis system 200 based on the charging control signal.
[0117] In this way, the static functions of the integrated chassis can be tested through the charging equipment.
[0118] In some embodiments of this application, the controller may include a host computer, which may include:
[0119] The automation system is electrically connected to the control system.
[0120] The control system is electrically connected to the chassis system, environmental compartment, charging equipment, and vehicle dynamic load control system, respectively.
[0121] The simulation system is electrically connected to the vehicle dynamic load control system.
[0122] The vehicle dynamic load control system is electrically connected to the vehicle dynamic load simulation equipment.
[0123] Here, the host computer can be electrically connected to the chassis system, environmental compartment, charging equipment, and vehicle dynamic load simulation equipment, respectively.
[0124] Specifically, the automation system can be used to run automated control programs and send control signals to the control system, such as environmental simulation signals, charging control signals, and / or other signals. The control system can communicate with the OBD interface in the chassis system via CAN. The control system can communicate with the environmental compartment via Ethernet. The control system can communicate with the charging equipment via Ethernet.
[0125] Specifically, the automation system can send environmental simulation signals, charging control signals, and / or other signals to the control system by running an automation control program. The control system can then send the environmental simulation signals to the environmental chamber, the charging control signals to the charging equipment, and / or other signals to the corresponding devices. The simulation system can generate vehicle dynamic load simulation signals and send them to the vehicle dynamic load control system, which can then send these signals to the vehicle dynamic load simulation equipment. The control system can also receive feedback signals from the chassis system and send them to the automation system, which can then determine the test results of the chassis system based on these feedback signals.
[0126] In this way, the chassis system can be automatically tested through a host computer, which simplifies the structure of the chassis testing system and reduces costs.
[0127] In some embodiments of this application, the controller may include a host computer and a slave computer;
[0128] The host computer may include:
[0129] The automation system is electrically connected to the control system.
[0130] The control system is electrically connected to the vehicle dynamic load control system in the chassis system, environmental compartment, charging equipment, and lower-level computer, respectively.
[0131] The lower-level machine may include:
[0132] The simulation system is electrically connected to the vehicle dynamic load control system.
[0133] The vehicle dynamic load control system is electrically connected to the vehicle dynamic load simulation equipment.
[0134] Here, the host computer can be electrically connected to the slave computer. The host computer and the slave computer can communicate via Ethernet to exchange data.
[0135] The host computer can also be electrically connected to the chassis system, environmental compartment and charging equipment respectively.
[0136] The host computer may include a control system and an automation system. The automation system may be electrically connected to the control system. The automation system can run automation control programs and send control signals to the control system, such as environmental simulation signals, charging control signals, and / or other signals. The control system may communicate with the OBD interface in the chassis system via CAN communication. The control system may communicate with the environmental compartment via Ethernet. The control system may communicate with the charging equipment via Ethernet.
[0137] Specifically, the automation system can send environmental simulation signals, charging control signals, and / or other signals to the control system by running an automation control program. The control system can then send the environmental simulation signals to the environmental chamber, the charging control signals to the charging equipment, and / or other signals to the corresponding devices. The control system can also receive feedback signals from the chassis system and send these feedback signals to the automation system, which can then determine the test results of the chassis system based on these feedback signals.
[0138] The lower-level computer can communicate with the vehicle dynamic load simulation equipment via Ethernet. The lower-level computer can be used to send vehicle dynamic load simulation signals to the vehicle dynamic load simulation equipment.
[0139] Specifically, the lower-level machine may include a simulation system and a vehicle dynamic load control system. The simulation system can be used to generate a vehicle dynamic load simulation signal and send the vehicle dynamic load simulation signal to the vehicle dynamic load control system, which can then send the vehicle dynamic load simulation signal to the vehicle dynamic load simulation device.
[0140] In this way, the chassis system can be automatically tested through the host computer and the slave computer. Moreover, the vehicle dynamic load simulation equipment can be controlled by the slave computer with a fast response speed, which can meet the high real-time requirements of the vehicle dynamic load simulation equipment.
[0141] In some examples, such as Figure 8 As shown, the chassis testing system 100 may include: a vehicle dynamic load simulation device, a controller 120, an environmental chamber 130, and a charging device 140.
[0142] The vehicle dynamic load simulation device may include a dynamometer 1111 and a motor 1112.
[0143] The controller 120 may include a host computer 1210 and a slave computer 1220. The host computer 1210 may include a control system 1211 and an automation system 1212. The slave computer 1220 may include a simulation system 121 and a vehicle dynamic load control system. The vehicle dynamic load control system may include a motor control system 1221 and a dynamometer control system 1222.
[0144] The connection relationship can be as follows:
[0145] The dynamometer 1111 is installed on the wheel mounting end of the half axle of the chassis system 200 and is connected to the dynamometer control system 1222 via Ethernet communication.
[0146] The motor 1112 is electrically connected to the steering control system in the chassis system 200 and is connected to the motor control system 1221 via Ethernet communication.
[0147] Both the dynamometer control system 1222 and the motor control system 1221 are electrically connected to the simulation system 121.
[0148] The chassis system 200 is located inside the environmental compartment 130, and the environmental compartment 130 is connected to the host computer 1210 via Ethernet communication.
[0149] The charging device 140 is electrically connected to the charging port of the chassis system 200 and is connected to the host computer 1210 via CAN communication.
[0150] The control system 1211 and the automation system 1212 are electrically connected.
[0151] The host computer 1210 and the slave computer 1220 are connected via Ethernet communication.
[0152] It should be noted that chassis system 200 is not part of chassis test system 100. Figure 8 The chassis system 200 is framed within the chassis test system 100 only to show that the environmental compartment 130 is included within the chassis test system 100, and the chassis system 200 is located within the environmental compartment 130.
[0153] Based on the chassis testing system provided in this application, it is possible to perform tests on dynamic functions of the chassis system, including but not limited to thermal management, power control, driver intent, vehicle operating status, braking system, electric power steering system function, power economy and braking performance, as well as tests on static functions of the chassis system, including but not limited to low-voltage energy management, high-voltage energy management, AC / DC charging management, air conditioning power, instrument display function and charging performance.
[0154] The dynamic function tests all require the use of wheel simulation equipment. All functional tests can be conducted using an environmental chamber to simulate normal temperature, low temperature, and / or high temperature environments.
[0155] The following examples of static and dynamic functional testing illustrate the operation of the chassis testing system.
[0156] The test procedure for the high-voltage power-on Ready function of high-voltage energy management in static functions is as follows:
[0157] The automation system in the host computer controls the high-voltage power-on process. Upon receiving the high-voltage power-on command from the automation system, the control system in the host computer sends it to the SICC of the integrated chassis system via CAN communication. The SICC of the integrated chassis responds to the high-voltage power-on command, executes the high-voltage power-on process, and sends the high-voltage flag to the host computer via CAN communication. The host computer determines whether the high-voltage power-on is successful based on the high-voltage flag. If unsuccessful, the test fails and ends. If successful, the control system in the host computer sets the brake signal to 1 and the gear signal to D, and sends the brake signal to the SICC of the integrated chassis system via CAN communication. The SICC of the integrated chassis system executes the Ready process according to the vehicle Ready process and sends the Ready flag to the host computer via CAN communication. The host computer determines whether the Ready process is successful based on the Ready flag. This concludes the high-voltage power-on Ready function test process for high-voltage energy management.
[0158] The high-voltage energy management function test only requires signal interaction between the host computer and the integrated chassis system, so it belongs to the static function test.
[0159] The testing procedure for low-temperature economic performance in dynamic functions is as follows:
[0160] The automation system in the host computer controls the process of the World Light Vehicle Test Cycle (WLTC) economic testing. The host computer's control system sends low-temperature signals to the environmental chamber via Ethernet communication. Upon receiving the temperature signal, the environmental chamber sets its temperature accordingly to simulate a low-temperature environment. The host computer's control system receives test commands from the automation system and transmits the WLTC speed curve to the dynamometer control system in the lower-level computer via Ethernet communication. The lower-level dynamometer control system sets the dynamometer to speed mode and sends speed commands to the dynamometer in real time according to speed requirements, ensuring the dynamometer operates at the required speed. Simultaneously, based on the real-time speed, it calculates the accelerator and brake pedal openings using a model and transmits these openings to the control system via Ethernet communication. The control system then sends these openings to the integrated chassis system. The integrated chassis system responds to the accelerator and brake signals, ensuring that the integrated chassis system's operating speed remains consistent with the WLTC speed curve. The host computer records the vehicle's mileage and battery energy consumption under WLTC conditions, calculates the WLTC driving range, compares it with the target driving range, and draws a conclusion. This concludes the low-temperature economic performance testing process.
[0161] Testing low-temperature economic performance requires signal interaction between multiple devices, including a host computer, a slave computer, an integrated chassis system, a dynamometer, and an environmental chamber; therefore, it falls under the category of dynamic functional testing.
[0162] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A chassis test system, characterized by, The application relates to a vehicle dynamic load simulation device and a vehicle dynamic load simulation method. The application comprises: an environmental bin for accommodating a chassis system, wherein the environmental bin comprises a temperature environmental bin and / or a humidity environmental bin; a vehicle dynamic load simulation device connected with the chassis system, wherein the vehicle dynamic load simulation device comprises a dynamometer and a motor, the dynamometer is installed at a wheel mounting end of a half shaft of the chassis system and is electrically connected with a controller, the number of the dynamometers is consistent with the number of the half shafts included in the chassis system, and the motor is electrically connected with the controller and the chassis system respectively; a charging device electrically connected with the chassis system and used for charging the chassis system; 2. The pod testing system of claim 1, wherein, a controller electrically connected with the vehicle dynamic load simulation device and the chassis system respectively and electrically connected with the environmental bin and the charging device respectively, used for sending a vehicle dynamic load simulation signal to the vehicle dynamic load simulation device and receiving a feedback signal of the chassis system, the feedback signal is generated in response to the vehicle dynamic load simulation device simulating a vehicle dynamic load, the feedback signal is used for determining a test result of the chassis system, the vehicle dynamic load simulation device is used for simulating a vehicle dynamic load based on the vehicle dynamic load simulation signal, and the controller comprises an emulation system and a vehicle dynamic load control system electrically connected with the emulation system, the vehicle dynamic load control system comprises a dynamometer control system and a motor control system, the dynamometer control system is connected between the emulation system and the dynamometer, and the motor control system is connected between the emulation system and the motor. The emulation system is used for generating the vehicle dynamic load simulation signal and sending the vehicle dynamic load simulation signal to the vehicle dynamic load control system.
3. The chassis test system of claim 1, wherein, The vehicle dynamic load control system is used for sending the vehicle dynamic load simulation signal to the vehicle dynamic load simulation device. The environmental bin comprises:
4. The chassis test system of claim 1, wherein, a temperature box electrically connected with the controller and used for receiving a temperature simulation signal sent by the controller, and the chassis system is located in the temperature box.
5. The chassis test system of any of claims 1-4, wherein, The charging device is used for receiving a charging control signal sent by the controller and charging the chassis system based on the charging control signal. The controller comprises an upper computer, and the upper computer comprises: an automation system electrically connected with a control system; the control system is electrically connected with the chassis system, the environmental bin, the charging device and the vehicle dynamic load control system respectively; an emulation system electrically connected with the vehicle dynamic load control system; 6. The chassis test system of any of claims 1-4, wherein, the vehicle dynamic load control system is electrically connected with the vehicle dynamic load simulation device. The controller comprises an upper computer and a lower computer; The upper computer comprises: an automation system electrically connected with a control system; the control system is electrically connected with the chassis system, the environmental bin, the charging device and the vehicle dynamic load control system in the lower computer respectively; The lower computer comprises: an emulation system electrically connected with the vehicle dynamic load control system; the vehicle dynamic load control system is electrically connected with the vehicle dynamic load simulation device.