CN111832122A - Vehicle vibration reduction simulation test method and system - Google Patents
Vehicle vibration reduction simulation test method and system Download PDFInfo
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- CN111832122A CN111832122A CN202010700031.3A CN202010700031A CN111832122A CN 111832122 A CN111832122 A CN 111832122A CN 202010700031 A CN202010700031 A CN 202010700031A CN 111832122 A CN111832122 A CN 111832122A
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Abstract
The embodiment of the invention provides a vehicle vibration reduction simulation test method and a vehicle vibration reduction simulation test system, wherein the method comprises the following steps: building a vehicle model through host equipment, configuring relevant parameters of the vehicle model operation, and writing the vehicle model and the relevant parameters in target equipment; operating the vehicle model based on the relevant parameters through the target device to simulate the motion of the vehicle model in the road surface, and outputting a road surface excitation signal to a motion controller in the shock absorber actuating system; controlling an actuating mechanism to drive a shock absorber to vertically move through a motion controller based on a road excitation signal; the state parameters of the shock absorber in the vertical motion process are obtained through the target equipment, the shock absorption simulation test of the vehicle is carried out based on the vehicle model, the related parameters and the state parameters, the combined simulation test of the vehicle model and the shock absorber real object motion can be realized, and therefore the performance of the vehicle can be accurately evaluated.
Description
Technical Field
The embodiment of the invention relates to a vehicle technology, in particular to a vehicle vibration reduction simulation test method and system.
Background
Currently, when vehicle performance needs to be evaluated, a vehicle needs to be tested to obtain an evaluation result. Among them, in the vehicle test method, means such as pure software simulation and real vehicle test are generally adopted.
The shock absorber is a key part of a vehicle, and the characteristics of the shock absorber of the vehicle cannot be truly reflected in a pure software simulation mode, so that the vehicle evaluation is possibly inaccurate; in the real vehicle test mode, the test result is more passive to the improvement of the vehicle performance in the later stage of vehicle research and development.
Disclosure of Invention
The embodiment of the invention provides a vehicle vibration damping simulation test method and system, which can realize the combined simulation test of the vehicle model and the real object motion of a vibration damper, realize the closed loop test of the vehicle dynamic process, and obtain the real motion data of the vibration damper, thereby accurately evaluating the performance of a vehicle and having more significance in evaluating the performance of the vehicle.
In a first aspect, an embodiment of the present invention provides a vehicle vibration damping simulation test method, including:
building a vehicle model through host equipment, configuring relevant parameters of vehicle model operation, and writing the vehicle model and the relevant parameters in target equipment;
operating, by the target device, the vehicle model based on the relevant parameters to simulate movement of the vehicle model in a road surface and outputting a road surface excitation signal to a motion controller in a shock absorber actuation system;
controlling an actuating mechanism to drive a shock absorber to vertically move through the motion controller based on the road surface excitation signal;
and acquiring state parameters of the shock absorber in the vertical motion process through the target equipment, and carrying out shock absorption simulation test on the vehicle based on the vehicle model, the related parameters and the state parameters.
In a second aspect, an embodiment of the present invention further provides a vehicle vibration damping test system, including: a host device, a target device, and a damper actuation system; the shock absorber actuating system comprises a motion controller, an execution structure and a shock absorber;
the host equipment is used for building a vehicle model, configuring relevant parameters of the vehicle model operation, and writing the vehicle model and the relevant parameters in the target equipment;
the target device is used for operating the vehicle model based on the relevant parameters to simulate the motion of the vehicle model in a road surface and outputting a road surface excitation signal to a motion controller in a shock absorber actuating system;
the motion controller is used for controlling the actuating mechanism to drive the shock absorber to vertically move based on the road surface excitation signal;
the target equipment is further used for acquiring state parameters of the shock absorber in the vertical motion process, and carrying out shock absorption simulation test on the vehicle based on the vehicle model, the relevant parameters and the state parameters.
According to the technical scheme provided by the embodiment of the invention, a vehicle model is built through host equipment, relevant parameters of the vehicle model operation are configured, and the vehicle model and the relevant parameters are written in target equipment; operating the vehicle model based on the relevant parameters through the target device to simulate the motion of the vehicle model in the road surface, and outputting a road surface excitation signal to a motion controller in the shock absorber actuating system; controlling an actuating mechanism to drive a shock absorber to vertically move through a motion controller based on the road surface excitation signal; the method comprises the steps of obtaining state parameters of a shock absorber in the vertical motion process through target equipment, carrying out shock absorption simulation on a vehicle based on a vehicle model, related parameters and the state parameters, namely, running the vehicle model through the target equipment, outputting a road spectrum excitation signal to drive the shock absorber to vertically move, obtaining the state parameters of the shock absorber in the vertical motion process through the target equipment, realizing combined simulation of physical motion of the vehicle model and the shock absorber, realizing closed-loop test of the vehicle dynamic process, obtaining real motion data of the shock absorber, accurately evaluating vehicle performance, and more meaningful evaluating vehicle performance.
Drawings
FIG. 1 is a flow chart of a vehicle vibration damping simulation test method provided by an embodiment of the invention;
FIG. 2 is a flow chart of a vehicle vibration damping simulation test method provided by the embodiment of the invention;
fig. 3 is a schematic structural diagram of a vehicle vibration damping simulation test system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Currently, when vehicle performance needs to be evaluated, a vehicle needs to be tested to obtain an evaluation result. Among them, in the vehicle test method, means such as pure software simulation and real vehicle test are generally adopted. The shock absorber is a key part of the vehicle, and the characteristics of the shock absorber of the vehicle cannot be truly reflected in a pure software simulation mode, so that the vehicle evaluation may be inaccurate; in the real vehicle test mode, the test result is more passive to the improvement of the vehicle performance in the later stage of vehicle research and development.
The vehicle model can be accurately established according to parameters of a vehicle, the shock absorber serves as a provider of a suspension motion damping force, and due to the nonlinear relation between displacement and the damping force in the motion process, the shock absorber is difficult to model and simulate.
Fig. 1 is a flowchart of a vehicle vibration damping simulation test method according to an embodiment of the present invention, where the method may be applied to a scenario of performing a simulation test on a whole vehicle or a suspension of a vehicle. As shown in fig. 1, the technical solution provided by the embodiment of the present invention includes:
s110: the method comprises the steps of building a vehicle model through host equipment, configuring relevant parameters of vehicle model operation, and writing the vehicle model and the relevant parameters in target equipment.
In embodiments of the present invention, the host device may be a host computer, or other host device. The vehicle model includes 1/4 vehicle model, 1/2 vehicle model or vehicle model of the entire vehicle.
In an implementation manner of the embodiment of the present invention, optionally, the flashing the vehicle model and the related parameters in the target device includes: and compiling the vehicle model and the related parameters into an embedded language code by calling a compiling function of the vehicle model, and writing the language code in the target equipment. Specifically, a Simulink model compiling function "rtwbuild ()" can be called to compile the vehicle model and the related parameters into an embedded C language code, and the embedded C language code is written in the target device.
In the embodiment of the present invention, optionally, the relevant parameters of the vehicle model operation include an environmental parameter of the vehicle model operation, a model parameter of the vehicle model, and information of the road spectrum signal; the environmental parameters of the vehicle model operation include: simulation step size, simulation time, running environment information of codes of the vehicle model, and data buffer size.
In the embodiment of the present invention, optionally, the host device may be configured with a Windows XP system, or an operating system above Windows XP, or may also be configured with other operating systems, and the host device may also be configured with an ethernet card, a matlab/Simulink software development platform, a Visual Studio compiler, and the like. The matlab/Simulink software development platform can be used for building a vehicle model and a Visual Studio compiler, and can be used for compiling the vehicle model and language codes of related parameters.
In the embodiment of the present invention, the host device and the target device may both be configured with an ethernet card, and the host device and the target device communicate with each other in the form of ethernet.
S120: and operating the vehicle model through the target device based on the relevant parameters to simulate the motion of the vehicle model in the road surface, and outputting a road surface excitation signal to a motion controller in the shock absorber actuating system.
In the embodiment of the invention, the target device can be a target computer, the target device can be configured with a DOS operating system, and in the case that the target device runs the vehicle model based on the relevant parameters of the vehicle model running, the mode of the operating system run by the target device is a DOS real-time operating system.
In the embodiment of the invention, the information of the road spectrum signal is used for simulating the road surface information of the running of the vehicle model. The target device may simulate road surface information of operation of the vehicle model based on the information of the road spectrum signal. The vehicle model parameters may include parameters of the size, appearance, internal structure, etc. of the vehicle model. The target device may simulate the motion of the vehicle model in the road surface based on the information of the environmental parameters of the vehicle operation, the model parameters of the vehicle model, and the road spectrum signal, and output a road surface excitation signal to the motion controller in the shock absorber actuation system.
S130: and controlling an actuating mechanism to drive the shock absorber to vertically move through the motion controller based on the road surface excitation signal.
In the embodiment of the invention, the shock absorber actuating system comprises a motion controller, an actuating mechanism, a shock absorber and the like.
In an embodiment of the present invention, specifically, the motion controller in the damper actuating system may send a control signal to the actuator based on the road excitation signal, and the actuator moves based on the control signal to drive the damper to move vertically.
In the embodiment of the present invention, both the target device and the damper actuating system may be configured with Peripheral Component Interconnect (PCI) bus Input/output (I/O) boards supported by Simulink, and both the target device and the damper actuating system may be connected through each part of the I/O board interface damper actuating system, or through other methods.
In the embodiment of the present invention, the actuator may include two linear servomotors, and the PID (proportional, integral, differential) control and the current loop control are performed by using a Digital Signal Processing (DSP) with double precision floating points.
S140: and acquiring state parameters of the shock absorber in the vertical motion process through the target equipment, and carrying out shock absorption simulation test on the vehicle based on the vehicle model, the related parameters and the state parameters.
In one implementation manner of the embodiment of the present invention, the acquiring, by the target device, the state parameter of the shock absorber during the vertical movement includes: the method comprises the steps of obtaining the displacement of the shock absorber from a displacement sensor in the shock absorber actuating system through target equipment, and obtaining the damping force corresponding to the displacement from a pressure sensor in the shock absorber actuating system. The displacement of the shock absorber is fed back through the pressure sensor, and the damping force corresponding to the displacement is fed back through the pressure sensor.
In the embodiment of the invention, the vibration reduction simulation test of the vehicle is carried out through the vehicle model, the relevant parameters of the vehicle model operation and the state parameters of the vibration absorber in the vertical motion process, so that the combined simulation test of the real object motion of the vehicle model and the vibration absorber is realized.
According to the technical scheme provided by the embodiment of the invention, a vehicle model is built through host equipment, relevant parameters of the vehicle model operation are configured, and the vehicle model and the relevant parameters are written in target equipment; operating the vehicle model based on the relevant parameters through the target device to simulate the motion of the vehicle model in the road surface, and outputting a road surface excitation signal to a motion controller in the shock absorber actuating system; controlling an actuating mechanism to drive a shock absorber to vertically move through a motion controller based on the road surface excitation signal; the method comprises the steps of obtaining state parameters of the shock absorber in the vertical motion process through target equipment, carrying out shock absorption simulation on a vehicle based on the vehicle model, related parameters and the state parameters, namely, running the vehicle model through the target equipment, outputting road spectrum excitation signals to drive the shock absorber to vertically move, obtaining the state parameters of the shock absorber in the vertical motion process through the target equipment, realizing combined simulation of physical motion of the vehicle model and the shock absorber, realizing closed-loop test of the vehicle dynamic process, obtaining real motion data of the shock absorber, and having more significance for evaluation of vehicle performance.
Fig. 2 is a flowchart of a simulation testing method for a vehicle model according to an embodiment of the present invention, and in this embodiment, optionally, the method according to the embodiment of the present invention may further include:
sending, by the host apparatus, control configuration parameters of the shock absorber actuation system to the motion controller to cause the motion controller to control vertical motion of the shock absorber based on the control configuration parameters.
Optionally, the method provided in the embodiment of the present invention may further include:
and configuring a real-time system for the target device through the host device so that the vehicle model runs in the real-time system.
As shown in fig. 2, the technical solution provided by the embodiment of the present invention includes:
s210: and configuring a real-time system for the target device through the host device so that the vehicle model runs in the real-time system.
In this embodiment of the present invention, before configuring, by the host device, the real-time system for the target device so that the vehicle model runs in the real-time system, the method may further include: the host device is connected with the environment configuration.
Specifically, the host device and the target device are connected through an ethernet network, and the host device and the target device form a local area network, configure a fixed IP address, and perform a communication test. The communication test can be performed by inputting an "xptest" instruction in an MATLAB command window of the host device.
By configuring the Real-time operating system for the target device in the host device, specifically, inputting an 'xpc explorer' instruction in an MATLAB command window of the host device, opening a Simulink Real-time explorer dialog box, configuring the embedded Real-time system, copying a start-up file generated after configuration is completed to a C packing directory of the target device, and setting the start-up mode of the target device as a DOS Real-time operating system by default.
S220: sending, by a host device, control configuration parameters of a shock absorber actuation system to the motion controller to cause the motion controller to control vertical motion of the shock absorber based on the control configuration parameters.
In the embodiment of the invention, the host equipment can be connected with a live wire board card of the shock absorber actuating system, and the host equipment can configure the control parameters of each part in the shock absorber actuating system through related configuration software and send the control configuration parameters to the motion controller. For example, one motor in the actuator can be configured as a driving shaft, and the other motor can be configured as a driven shaft; the amplitude of the motor motion, the motion track driving source and the like can be configured according to the vibration damper parameters configured by the host equipment.
S230: the method comprises the steps of building a vehicle model through host equipment, configuring relevant parameters of vehicle model operation, and writing the vehicle model and the relevant parameters in target equipment.
S240: operating, by a target device, the vehicle model based on the relevant parameters to simulate movement of the vehicle model in a road surface and outputting a road surface excitation signal to a motion controller in a shock absorber actuation system;
s250: and controlling an actuating mechanism to drive the shock absorber to vertically move through the motion controller based on the road surface excitation signal.
S260: and acquiring state parameters of the shock absorber in the vertical motion process through the target equipment, and performing shock absorption simulation on the vehicle based on the vehicle model, the related parameters and the state parameters.
On the basis of the above embodiment, the technical solution provided by the embodiment of the present invention may further include: and acquiring the motion parameters of the vehicle in the vibration damping simulation process through the target equipment, and carrying out performance analysis on the vehicle based on the motion parameters. The motion parameters may include acceleration of the vehicle body in the vertical direction, dynamic wheel load, and other data. The performance of the vehicle can be analyzed through the motion parameters of the vehicle in the vibration damping process, and further guidance can be given to the selection of the vibration damper, the design of the vehicle suspension, the adjustment of the vibration damper and the like.
In order to better describe the technical solution provided by the embodiment of the present invention, the method provided by the embodiment of the present invention may include:
the method comprises the following steps: the host device is connected with the environment configuration. The host equipment and the target equipment are connected through the Ethernet, constitute a local area network and are configured to be fixed IP addresses, and communication test is carried out. The communication test can be performed by inputting an "xptest" instruction in an MATLAB command window of the host device.
Step two: inputting an 'xpc Explorer' instruction in an MATLAB command window of host equipment, opening a Simulink real-Time Explorer dialog box, carrying out embedded real-Time system configuration, copying a starting file generated after the configuration is finished to a C packing directory of target equipment, and setting the starting mode of the target equipment as a DOS real-Time operating system by default.
Step three: the host equipment can be connected with a live wire board card of the shock absorber actuating system, and the host equipment can configure control parameters of all parts in the shock absorber actuating system through related configuration software. For example, one motor in the actuator can be configured as a driving shaft, and the other motor can be configured as a driven shaft; the amplitude of the motor motion, the motion track driving source and the like can be configured according to the vibration damper parameters configured by the host equipment.
Step four: the target equipment is respectively connected with an analog quantity input port, a pressure sensor, a displacement sensor and the like of a motion controller in the shock absorber actuating system through an interface of an I/O board card of a Simulink Real-Time support PCI.
Step five: simulation test of the vehicle shock absorber in a ring. Before simulation test, firstly, parameters of a Simulink simulation environment are configured, such as simulation step length, simulation time, a target code running environment, the size of a data buffer area of target equipment and the like. Secondly, parameter configuration of a vehicle model and discretization preprocessing of road spectrum signals are carried out. And then, calling a Simulink model compiling function 'rtwbuild ()' to compile the vehicle model into an embedded C language code, and downloading the embedded C language code into a target device for running. The target equipment provides a real-time running inner core for the vehicle model in the DOS operating system environment, in the running process of the vehicle model, a random road spectrum signal is used as a road spectrum excitation signal of the shock absorber and sent to the shock absorber actuating system, and a motion controller in the shock absorber actuating system drives the execution structure to move according to a certain time sequence excitation based on the road spectrum signal so as to drive the shock absorber to move, so that the road surface running effect of the vehicle is realized. The vehicle model runs in a real-time system, and the vibration absorber on-loop test is completed by analyzing the stress condition of the vibration absorber and outputting the displacement of the vehicle in the vertical direction and the damping force corresponding to the displacement.
Step six: and in the simulation process, data such as vehicle body acceleration, wheel dynamic load and the like are solved in real time and analyzed, so that the evaluation on the vehicle ride comfort is realized.
Fig. 3 is a schematic structural diagram of a vehicle vibration damping test system according to an embodiment of the present invention, and as shown in fig. 3, the system includes: a host device, a target device, and a damper actuation system; the shock absorber actuation system includes a motion controller, an actuation structure, and a shock absorber.
The host equipment is used for building a vehicle model, configuring relevant parameters of the vehicle model operation, and writing the vehicle model and the relevant parameters in the target equipment;
a target device for operating the vehicle model based on the relevant parameters to simulate the motion of the vehicle model in the road surface and outputting a road surface excitation signal to a motion controller in the shock absorber actuation system;
the motion controller is used for controlling the actuating mechanism to drive the shock absorber to vertically move based on the road excitation signal;
the target equipment is further used for acquiring state parameters of the shock absorber in the vertical movement process, and carrying out shock absorption simulation test on the vehicle based on the vehicle model, the related parameters and the state parameters.
In the embodiment of the present invention, optionally, the shock absorber actuation system further includes a pressure sensor and a displacement sensor; the displacement sensor is used for acquiring the displacement of the shock absorber in the vertical motion process and feeding the displacement back to the target equipment; and the pressure sensor is used for acquiring the damping force corresponding to the displacement of the shock absorber in the vertical movement process and feeding the damping force back to the target equipment. Among them, the sensors shown in fig. 3 include a pressure sensor and a displacement sensor.
Optionally, the acquiring, by the target device, the state parameter of the shock absorber during the vertical movement includes: the method comprises the steps of obtaining the displacement of the shock absorber from a displacement sensor in the shock absorber actuating system through target equipment, and obtaining the damping force corresponding to the displacement from a pressure sensor in the shock absorber actuating system.
Optionally, the flashing the vehicle model and the related parameters in the target device includes:
and compiling the vehicle model and the related parameters into an embedded language code by calling a compiling function of the vehicle model, and writing the language code in the target equipment.
In an embodiment of the invention, the host device may include a vehicle modeling module, a parameter configuration module, a data monitoring module, and a control parameter configuration module. The vehicle modeling module is used for building a vehicle model, configuring parameters and configuring relevant parameters of the vehicle model operation; optionally, the relevant parameters of the vehicle model operation include the environment parameters of the vehicle model operation, the model parameters of the vehicle model, and the information of the road spectrum signal; the environmental parameters of the vehicle model operation include: simulation step size, simulation time, running environment information of codes of the vehicle model, and data buffer size. The control parameter configuration module is used for sending control configuration parameters of the shock absorber actuating system to the motion controller so that the motion controller can control the vertical motion of the shock absorber based on the control configuration parameters.
In the embodiment of the present invention, as shown in fig. 3, the target device includes a vehicle model module, a road spectrum signal loading module, a data acquisition module, and an I/O board. The system comprises a vehicle model module, a road spectrum signal loading module and a data acquisition module, wherein the vehicle model module is used for operating a vehicle model, the road spectrum signal loading module is used for loading information of road spectrum signals, and the data acquisition module is used for acquiring data fed back by a pressure sensor, a displacement sensor and the like.
In the embodiment of the invention, the host device can be configured with a Windows XP system, or an operating system above Windows XP, or other operating systems, and the host device can also be configured with an Ethernet card, a matlab/Simulink software development platform, a Visual Studio compiler and the like. The matlab/Simulink software development platform can be used for building a vehicle model and a Visual Studio compiler, and can be used for compiling the vehicle model and language codes of related parameters.
In the embodiment of the present invention, the host device and the target device may both be configured with ethernet cards, and the host device and the target device communicate with each other in the form of ethernet, where the target device may be configured with a PCI independent ethernet card.
In this embodiment of the present invention, the target device may be a target computer, the target device may be configured with a DOS operating system, both the target device and the damper actuating system may be configured with Input/output (I/O) board cards supporting Peripheral Component Interconnect (PCI) bus of Simulink, and the target devices may be connected through each part of the I/O board card interface damper actuating system, or through other methods.
In the embodiment of the invention, the host equipment can perform the functions of building a vehicle model, configuring relevant parameters of the vehicle model operation, simulating management, data monitoring and the like, and is used for configuring the control parameters of the shock absorber actuating system; the target equipment is used for carrying out vehicle model operation based on the relevant parameters, outputting a road spectrum excitation signal to the shock absorber actuating system, receiving the displacement and the damping force of the motion fed back by the shock absorber actuating system in real time and realizing closed-loop simulation of the vehicle model motion; the shock absorber actuating system receives a road spectrum excitation signal output by a target equipment running vehicle model, drives the actuating mechanism to move through the motion controller so as to drive the shock absorber to move in the vertical direction, and feeds back damping force and displacement generated by the shock absorber to the target equipment in real time.
In embodiments of the present invention, the host device may be a host computer, or other host device. The vehicle model includes 1/4 vehicle model, 1/2 vehicle model or vehicle model of the entire vehicle. The number of shock absorbers supported by the vehicle model depends on the number of shock absorber actuator systems.
It should be noted that the vehicle vibration damping simulation test system provided by the embodiment of the invention can control the movement of a single vibration damper by matching with a vehicle model; the vehicle vibration damping simulation test system provided by the embodiment of the invention can be an 1/2 suspension or a suspension vibration damper in-loop simulation system of a whole vehicle. Wherein, the actuating system of the shock absorber can be 2 or 4, etc.
It should be noted that the hardware and software programs configured by the host device and the target device may satisfy the configuration of the hardware and software programs included in the Simulink-RT system, and the software programs, the hardware versions, and the models are not limited. The shock absorber actuating system is used as an independent subsystem in the whole system, the functional requirements and performance indexes of the whole system can be met, and the versions, models, sizes, materials and the like of the included electric, mechanical and software parts are not specifically limited.
In the related art, a damper actuating system is generally a hydraulic cylinder or a driving mode of converting circular motion of a rotary motor into linear motion is adopted, the response speed is low in the process of controlling the motion of the damper, the motion closed-loop control effect is poor, and the system is generally used for testing the damper moving at low frequency. The shock absorber actuating system provided by the sending embodiment adopts a linear servo motor full closed-loop motion control mode, can meet the test requirement of the shock absorber on high response frequency, can respond to the input of various road spectrum excitations in real time in the shock absorption simulation test of a vehicle model, and reproduces the motion effect of the shock absorber in a real vehicle environment.
According to the system provided by the embodiment of the invention, the vehicle model runs in a real-time system, the road spectrum signal drives the vibration absorber to move through the execution structure, the real displacement and damping force of the vibration absorber in the motion process of the vehicle model are fed back to the vehicle model in real time, the combined simulation test of the real motion of the vehicle model and the vibration absorber is realized, the performance of the vehicle can be accurately evaluated, and the evaluation of the vehicle performance is more meaningful.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A vehicle vibration damping simulation test method is characterized by comprising the following steps:
building a vehicle model through host equipment, configuring relevant parameters of vehicle model operation, and writing the vehicle model and the relevant parameters in target equipment;
operating, by the target device, the vehicle model based on the relevant parameters to simulate movement of the vehicle model in a road surface and outputting a road surface excitation signal to a motion controller in a shock absorber actuation system;
controlling an actuating mechanism to drive a shock absorber to vertically move through the motion controller based on the road surface excitation signal;
and acquiring state parameters of the shock absorber in the vertical motion process through the target equipment, and carrying out shock absorption simulation test on the vehicle based on the vehicle model, the related parameters and the state parameters.
2. The method of claim 1, further comprising:
sending, by the host apparatus, control configuration parameters of the shock absorber actuation system to the motion controller to cause the motion controller to control vertical motion of the shock absorber based on the control configuration parameters.
3. The method of claim 1, further comprising:
and configuring a real-time system for the target device through the host device so that the vehicle model runs in the real-time system.
4. The method of claim 1, wherein the obtaining, by a target device, the state parameter of the shock absorber during vertical motion comprises:
the method comprises the steps of obtaining the displacement of the shock absorber from a displacement sensor in the shock absorber actuating system through target equipment, and obtaining the damping force corresponding to the displacement from a pressure sensor in the shock absorber actuating system.
5. The method of claim 1,
the relevant parameters of the vehicle model operation comprise the environment parameters of the vehicle model operation, the model parameters of the vehicle model and the information of the road spectrum signals;
the environmental parameters of the vehicle model operation include: simulation step size, simulation time, running environment information of codes of the vehicle model, and data buffer size.
6. The method of claim 1, wherein the flashing the vehicle model and the related parameters in a target device comprises:
and compiling the vehicle model and the related parameters into an embedded language code by calling a compiling function of the vehicle model, and writing the language code in the target equipment.
7. The method of claim 1, further comprising:
and acquiring the motion parameters of the vehicle in the vibration damping simulation process through the target equipment, and carrying out performance analysis on the vehicle based on the motion parameters.
8. The method of claim 1, wherein the vehicle model comprises an 1/4 vehicle model, a 1/2 vehicle model, or a full vehicle model.
9. A vehicle vibration damping test system, comprising: a host device, a target device, and a damper actuation system; the shock absorber actuating system comprises a motion controller, an execution structure and a shock absorber;
the host equipment is used for building a vehicle model, configuring relevant parameters of the vehicle model operation, and writing the vehicle model and the relevant parameters in the target equipment;
the target device is used for operating the vehicle model based on the relevant parameters to simulate the motion of the vehicle model in a road surface and outputting a road surface excitation signal to a motion controller in a shock absorber actuating system;
the motion controller is used for controlling the actuating mechanism to drive the shock absorber to vertically move based on the road surface excitation signal;
the target equipment is further used for acquiring state parameters of the shock absorber in the vertical motion process, and carrying out shock absorption simulation test on the vehicle based on the vehicle model, the relevant parameters and the state parameters.
10. The system of claim 9, wherein the shock absorber actuation system further comprises a pressure sensor and a displacement sensor;
the displacement sensor is used for acquiring the displacement of the shock absorber in the vertical movement process and feeding the displacement back to the target equipment;
the pressure sensor is used for acquiring the damping force corresponding to the displacement of the shock absorber in the vertical movement process and feeding the damping force back to the target equipment.
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