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Automobile active suspension control method based on parameter real-time adjustable PID controller

A control method and active suspension technology, applied to electric controllers, controllers with specific characteristics, suspensions, etc., can solve problems such as high complexity of the system, poor performance, and unsatisfactory PID control effects, and achieve robustness Good performance, simple algorithm and high reliability

Pending Publication Date: 2021-04-30
西藏宁算科技集团有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

However, when the controlled object system is complex and has high performance requirements, the parameters of the conventional PID controller are often poorly set and the performance is not good.
Due to the high complexity of the car system, the effect of conventional PID control is not ideal

Method used

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  • Automobile active suspension control method based on parameter real-time adjustable PID controller
  • Automobile active suspension control method based on parameter real-time adjustable PID controller
  • Automobile active suspension control method based on parameter real-time adjustable PID controller

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Embodiment Construction

[0029] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0030] The present invention provides an automobile active suspension control method based on a parameter real-time adjustable PID controller, and the specific steps are as follows:

[0031] Step 1, establish the vehicle dynamics model in the vehicle dynamics simulation software carsim, establish various simulation conditions for testing the driving performance of the vehicle, and set the input and output variables of the relative simulation tool simulink;

[0032] Establish the vehicle dynamics model in carsim, and set the input and output variables. The input variables (the variables input to carsim by simulink) are the damping force Fd_L1 of the left front shock absor...

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Abstract

The invention discloses an automobile active suspension control method based on a parameter real-time adjustable PID (Proportion Integration Differentiation) controller, which specifically comprises the following steps of establishing a whole automobile dynamic model in carsim, establishing various simulation working conditions for testing automobile driving performance, and setting input and output variables relative to simulink; firstly, enabling a carsim to output a simulation result of an automobile under the current working condition to a PID controller with real-time adjustable parameters, enabling the PID controller to determine the damping force of a shock absorber according to a certain control logic and transmit the damping force back to the carsim through simulink, and enabling the carsim to calculate all indexes of the automobile again and output the indexes to the simulink; judging whether each index is in an expected range or not by the simulink, and if a certain index is not in the expected range, adjusting the damping force of the shock absorber by the PID controller and inputting the damping force to the carsim again, until all indexes simulated by carsim are in an expected range. According to the method, a carsim andmatlab\simulink joint simulation mode is adopted, a unified simulink simulation framework is adopted, multi-scene and multi-target control of the vehicle is carried out, and a remarkable control effect is achieved.

Description

technical field [0001] The invention relates to an automobile active suspension control method based on a parameter real-time adjustable PID controller, and belongs to the technical field of automobile suspension control. Background technique [0002] Automotive suspension is a key subsystem that affects vehicle driving performance. The active suspension (including semi-active suspension) system overcomes the technical defects of passive suspension stiffness and damping that cannot be adjusted, and is now a hot spot in suspension technology research. The fundamental advantage of active suspension is that the stiffness and damping of the suspension can be changed during the working process of the vehicle. Among them, the active suspension control strategy that can provide good performance for the vehicle is the core content of the active suspension design. [0003] There are many ways to control the stiffness and damping of the existing active suspension. The traditional cla...

Claims

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Application Information

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IPC IPC(8): B60G17/018G05B11/42
CPCB60G17/018G05B11/42
Inventor 孙亚龙
Owner 西藏宁算科技集团有限公司
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