Jin QB, Liu Q. IMC-PID design based on model matching approach and closed-loop shaping.
ISA TRANSACTIONS 2014;
53:462-473. [PMID:
24280534 DOI:
10.1016/j.isatra.2013.11.005]
[Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 10/13/2013] [Accepted: 11/03/2013] [Indexed: 06/02/2023]
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.
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