Research on a Modified Smith Control Based on Fuzzy Algorithm
For the first-order integral process with large time delay, by introducing an inertial term which is regarded as a low-pass filter in system’s main feedback loop, a modified smith predictor (MSP) was presented. Further, the MSP controller and fuzzy PID controller are combined to make an intelligent control system to deal with systems with uncertainty and long time delay. By turning the PID parameters and smith predictor’s filter time constant online, the intelligent system has advantages of strong disturbance rejection capability, high steady precision and low dependence on the controlled plant’s precise mathematical model compared with conventional smith predictor and fuzzy PID controller, simulation results demonstrate the effectiveness of the proposed method.
Fuzzy PID control Smith Predictor Fuzzy-smith control Low-pass filter
Qinglan Wang Xuewen Shi
College of Electrical Engineering and Automation, Qufu Normal University, Shandong 276826 China
国际会议
2011 China Control and Decision Conference(2011中国控制与决策会议 CCDC)
四川绵阳
英文
3005-3008
2011-05-23（万方平台首次上网日期，不代表论文的发表时间）