A New PID-Link Fuzzy Controller Design

• Main Authors: Chuan-Hsien Kuo, 郭全賢
• Other Authors: Rey-Chue Hwang
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/93085478763541135471

碩士 === 義守大學 === 電機工程學系 === 91 === As we know, steady-state error is one of the problems existing in a traditional fuzzy controller design. Usually, the system error and error change are two only parameters considered in the construction of fuzzy mechanism. Such a traditional fuzzy controller is very similar to a PD controller. Therefore, the steady-state error will exist in the system performance. In this research, a PID-like fuzzy controller is developed based on three parameters, i.e., the system error, error change and the acceleration of system error. The viewpoints of kinematics are used in the construction of fuzzy control mechanism. Such a fuzzy controller is expected to have much better performance than the traditional fuzzy controller. For demonstrating the controller we design, several different types of control system are experimented. In addition, each system is also performed by using traditional fuzzy controller as a comparison. From the simulation results, we can find that not only the steady-state error can be solved, but also the entire control performance is much better by the controller we designed.