title: IMC-PID design based on model matching approach and closed-loop shaping.
abstract: Motivated by the limitations of the conventional internal model control (IMC), this communication addresses the design of IMC-based PID in terms of the robust performance of the control system. The IMC controller form is obtained by solving an H-infinity problem based on the model matching approach, and the parameters are determined by closed-loop shaping. The shaping of the closed-loop transfer function is considered both for the set-point tracking and for the load disturbance rejection. The design procedure is formulated as a multi-objective optimization problem which is solved by a specific optimization algorithm. A nice feature of this design method is that it permits a clear tradeoff between robustness and performance. Simulation examples show that the proposed method is effective and has a wide applicability.
authors.affiliation: Institute of Automation, Beijing University of Chemical Technology, Beisanhuan East Road 15, Chaoyang District, Beijing 100029, PR China.
authors.forename: Qi B
authors.initials: QB
authors.lastname: Jin
authors.affiliation: Institute of Automation, Beijing University of Chemical Technology, Beisanhuan East Road 15, Chaoyang District, Beijing 100029, PR China. Electronic address: liuqiebuct@gmail.com.
authors.forename: Q
authors.initials: Q
authors.lastname: Liu
keywords: Closed-loop shaping; IMC-PID; Model matching; Multi-objective optimization