Design of Fractional-order QFT Controllers for Unstable Plants Based on Automatic Loop Shaping

摘要：

This paper introduces a quantitative robust fractional order controller designing applicable to the unstable plant. The plant is with only one unstable pole. In this work, the main idea consists in the study of the fractional-order compensator, which gives singular properties to automatically shape the open loop gain function in Nichols by using a minimum set of parameters. The fractional order controller is designed for not only minimum phase system but also uncertain non-minimum phase and unstable plants in QFT. It has been demonstrated that the fractional order controller can provide smaller high frequency gain than the integer order controller due to its extra tunable parameters. An automatic loop-shaping based on Particle Swarm Optimization (PSO) is developed and employed in quantitative feedback theory (QFT).

关键词： Fractional Order Control Quantitative Feedback Theory Non-minimum Phase Plant Automatic Loop Shaping

作者: Li Meng Dingyü Xue

作者单位: Information Science and Engineering Department, Northeastern University, Shenyang 110004, P R China Information Science and Engineering Department, Northeastern University, Shenyang 110004, P R China

会议类型: 国际会议

会议名称: The 24th Chinese Control and Decision Conference (第24届中国控制与决策学术年会 2012 CCDC)

会议地点: 太原

会议语种:英文

页码: 389-394

在线出版日期: 2012-05-23（万方平台首次上网日期，不代表论文的发表时间）