Graphical PID tuning method for uncertain fractional-order multivariable systems

• Main Authors: Minghui Chu, Chi Xu, Jizheng Chu
• Format: Article
• Language: English
• Published: JVE International 2019-12-01
• Series: Journal of Vibroengineering
• Subjects: graphical tuning method; parameter uncertain; fractional-order; multivariable system
• Online Access: https://www.jvejournals.com/article/20500

In this paper, a graphical tuning method for controllers parameters based on the open-loop fractional transfer function (FO-EOTF) method is proposed for fractional-order parameter uncertain multivariable system. The FO-EOTF method is proposed to transform the parameter uncertain fractional-order multivariable system into a set of independent parameter uncertain fractional-order univariate systems and determine the parameters regions of the univariate systems. The gain phase margin tester is used to further guarantee the robust performance of the controlled system. Finally, simulation result from the numerical simulation is presented to demonstrate the effectiveness of this method.