New Methods for High-speed/High-accuracy Pneumatic Position Controls
High-speed/high-accuracy pneumatic position control is very difficult to be realized. This paper presents some effective new methods to realize robust high-speed/high-accuracy pneumatic position controls without overshoots. The effective new methods include the method arranging the transient process and using nonlinear controllers. If the transient process of a pneumatic position control system is arranged by using some proper rules to replace the traditional square response in the position control process, the initiative error of the system can be reduced largely and a larger gain of the controller can be used to improve the responding speed of the system at the same damping ratio. Therefore a compromise can be made among the responding speed, overshoot, robustness adaptability and stability. In addition, a dynamic output feedback controller, including position velocity and acceleration (PVA) feedback, is designed to improve the performance of the system. And a nonlinear controller is reconstructed by some nonlinear methods based on the linear output feedback controller in order to get a compromise between the stability and high-speed/high-accuracy, and at the same time to decrease noises and disturbances. In this paper, the principles of the new methods are introduced. The dynamic responses of a pneumatic system using the new control methods are simulated and tested. Simulation and experimental results are given to demonstrate the improvement obtained by arranging the transient process and using the proposed nonlinear controller in the pneumatic control system. The high-speed, high-accuracy, smooth and no overshoot transient responses are achieved.
pneumatic position control system arranging transient process nonlinear controls.
Wang Yanbo Bao Gang Zhang Wenhai Wang Zuwen
School of Mechatronics, Harbin Institute of Technology, Harbin, 150001, China The Eighteenth institute, China Academy of Launch Vehicle Technology, Beijing, 100076, China Electromechanics and Materials Engineering College, Dalian Maritime University, Dalian, 116026, Chin
国际会议
北戴河
英文
652-657
2007-06-06（万方平台首次上网日期，不代表论文的发表时间）