液压位置伺服系统的自抗扰控制  

ADRC of Hydraulic Position Servo System

作　　者：王宏文[1] 李晓阳[1] 麻召普 

机构地区：[1]河北工业大学控制科学与工程学院,天津300130

出　　处：《机床与液压》2015年第7期149-151,共3页Machine Tool & Hydraulics

摘　　要：由于闪光对焊过程中液压伺服系统存在非线性、参数时变性和强干扰性等特点,传统PID控制在控制精度上难以满足要求。依据液压伺服系统的主要影响因素和工艺要求,设计了三阶非线性自抗扰控制器。建立了液压伺服系统的数学模型,利用AMESim和Matlab软件对液压系统进行联合仿真,并将仿真结果与采用PID控制器的仿真结果进行对比。结果表明:该控制器优于传统的PID控制器,满足了液压位置伺服系统的控制要求,具有很强鲁棒性和抗干扰能力。As the characteristics of nonlinearity,parameter variability with time and strong interference existed in the hydraulic servo system of flash butt welding process,the traditional proportion integration differential（ PID） control was difficult to meet the requirements on the control precision. A third-order nonlinear Active Disturbance Rejection Control（ ADRC） was designed based on the main influence factors and process requirements of hydraulic servo system. The mathematical model of the hydraulic servo system was established. The simulations of the hydraulic system were done in unity by AMESim and Matlab software. Moreover the simulation results were compared with that of using PID controller. The conclusion shows that： the ADRC controller is better than conventional PID controller to meet the requirements of hydraulic position servo control system,and the hydraulic servo system obtains the performance of strong robustness and anti-interference ability.

关 键 词：闪光对焊 自抗扰控制 位置伺服系统 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]