大型载重车辆电液多轴转向执行机构的模糊PID控制  

Fuzzy-PID control of the executive mechanism of electro-hydraulic multi-axle steering system for large heavy truck

作　　者：孙玉波[1] 高秀华[1] 周富家[1] 赵斌 

机构地区：[1]吉林大学机械科学与工程学院,长春130022 [2]徐州重型机械有限公司,徐州221004

出　　处：《农业工程学报》2007年第5期100-104,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：吉林大学创新基金资助项目(2004CX021)

摘　　要：针对大型载重车辆电液转向系统的研究,建立了转向执行机构——电液比例阀控液压缸的数学模型。采用PID控制策略对液压缸的位置进行控制。由于传统的PID控制器参数整定不容易,该文将模糊控制应用到PID控制中,在线调整PID参数。利用MATLAB中SIMULINK模块搭建包含Fuzzy控制的系统模型。仿真结果表明:模糊PID控制改善了控制系统的动态特性,增强实用性。Based on the research of the electro-hydraulic steering system of crane, the mathematical model of the electro-hydraulic proportion control for a hydrocylinder was developed. The PID strategy was applied to control the location of the hydrocylinder. For solving the difficulty of PID control parameters adjusting, the combination of fuzzy control and PID control was employed to conduct on-line adjustment of PID parameters. The model of the control system including fuzzy control was established with SIMULINK module of MATLAB. The results of simulation show that the fuzzy PID control improves the dynamic characteristic of the system, enhances the practicability.

关 键 词：车辆工程 多轴转向 执行机构 模糊PID 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]