7自由度半主动悬架整车模型PID控制研究  

Research on PID Control of Seven-Degree-of-Freedom Semi-Active Suspension Vehicle Model

作　　者：高晋[1] 李晖 杨秀建[1] GAO Jin;LI Hui;YANG Xiu-jian(Kunming University of Science and Technology,Kunming Yunnan 650500,China)

机构地区：[1]昆明理工大学,交通工程学院,云南昆明650500

出　　处：《计算机仿真》2024年第12期197-201,401,共6页Computer Simulation

基　　金：国家自然科学基金地区基金项目(51965026)。

摘　　要：建立七自由度模型并采用随机信号作为路面输入模型,采用PID控制设计PID控制器,七自由度模型对影响车辆乘坐舒适性的车身加速度,影响车辆安全性的轮胎动位移和影响悬架工作性能的悬架动行程进行优化控制,同时,还对俯仰角加速度和侧倾角加速度两个性能指标进行优化。仿真结果表明,采用主动PID控制后,各项性能指标被优化的程度不相同,车辆舒适度指标和安全性指标均有所改善。MATLAB功能强大,Simulink为搭建仿真模型提供了可靠的平台,通过PID Tuner整定PID参数、为仿真带来很大的方便,提高了工作效率,仿真结果可靠。A seven-degree-of-freedom model is established,and random signals are used as the road surface input for the model.A PID controller is designed using PID control techniques.The seven-degree-of-freedom model optimizes the control of body acceleration,which affects vehicle riding comfort;tire dynamic displacement,which impacts vehicle safety;and suspension dynamic travel,which influences suspension performance.Additionally,it optimizes two performance indicators:pitch angle acceleration and roll angle acceleration.The simulation results show that after using active PID control,the degree of optimization of each performance index is not the same,the comfort index and the safety index of the vehicle are improved.MATLAB is powerful,and Simulink provides a reliable platform for the establishment of simulation models.The use of PID Tuner to fine-tune PID parameters facilitates the simulation process significantly,improving work efficiency and ensuring the reliability of the simulation results.

关 键 词：七自由度模型 随机路面输入模型 性能指标 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]