基于非线性模型的磁流变半主动悬架驱动系统  

Drive system for magnetorheological suspension based on nonlinear damper electric model

作　　者：李静[1] 韩佐悦[1] 杨威[1] 邢国成[1] 周瑜[1] LI Jing;HAN Zuo yue;YANG Wei;XING Guo cheng;ZHOU Yu(State Key Laboratory of Automotive Simulation and Control, J ilin University, Changchun 130022, China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2018年第3期645-651,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51275206)

摘　　要：针对当前磁流变减振器电气模型不能很好地拟合减振器响应特性的问题,提出了基于自研磁流变减振器特性的非线性二级线圈电路模型,并基于减振器方波响应测试结果,采用遗传算法进行参数辨识。在此基础上,通过对电路及减振器传递函数的分析,提出了由单片机控制的可变结构驱动器方案,并设计了自抗扰控制器。通过硬件在环试验证明:相比PID控制的BUCK电路,本文设计的驱动器及控制器可以很好地提高磁流变减振器的响应速度。To solve the issue of poor performance of present magnetorheological damper electric model for response characteristics,a nonlinear secondary coil model is put forward based on self-design damper.The model parameters are identified with GA algorithm based on square-wave test result.The transfer function of the circuit and damper model is analyzed and a current driver with variable structure is designed.An ADRC controller is designed for the current driver.HIL test results show that,compared with PID algorithm and BUCK circuit,the designed current driver and ADRC controller can improve the response characteristics of magnetorheological damper.

关 键 词：车辆工程 磁流变 非线性 电流驱动器 自抗扰控制器 

分 类 号：U463.3[机械工程—车辆工程]