Control strategy for pneumatic rotary position servo systems based on feed forward compensation pole-placement self-tuning method  

作　　者：毛新涛 杨庆俊 吴晋军 包钢 

机构地区：[1]Pneumatic Center, Harbin Institute of Technology

出　　处：《Journal of Central South University》2009年第4期608-613,共6页中南大学学报（英文版）

基　　金：Project(50375034) supported by the National Natural Science Foundation of China

摘　　要：The pneumatic rotary position system, in which an electro-pneumatic proportional flow valve controled a rotary cylinder, was studied, and its mathematical model was built. The model indicated that the controlled pneumatic system had disadvantages such as inherent non-linearity and variations of system parameters with working points. In order to improve the dynamic performance of the system, feed forward compensation self-tuning pole-placement strategy was adopted to place the poles of the system in a desired position in real time, and a recursive least square method with fixed forgetting factors was also used in the parameter estimation. Experimental results show that the steady state error of the pneumatic rotary position system is within 3% and the identified system parameters can be converged in 5 s. Under different loads, the controlled system has an excellent tracking performance and robustness of anti-disturbance.The pneumatic rotary position system, in which an electro-pneumatic proportional flow valve controled a rotary cylinder, was studied, and its mathematical model was built. The model indicated that the controlled pneumatic system had disadvantages such as inherent non-linearity and variations of system parameters with working points. In order to improve the dynamic performance of the system, feed forward compensation self-tuning pole-placement strategy was adopted to place the poles of the system in a desired position in real time, and a recursive least square method with fixed forgetting factors was also used in the parameter estimation. Experimental results show that the steady state error of the pneumatic rotary position system is within 3% and the identified system parameters can be converged in 5 s. Under different loads, the controlled system has an excellent tracking performance and robustness of anti-disturbance.

关 键 词：pneumatic servo system adaptive control parameter identification POLE-PLACEMENT 

分 类 号：TM921.541[电气工程—电力电子与电力传动]