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Title: Partial internal model control
Authors: Wang, Q.-G. 
Bi, Q.
Zhang, Y.
Keywords: Internal model control
Partial internal model control
Robust stability
Unstable process
Issue Date: Oct-2001
Citation: Wang, Q.-G., Bi, Q., Zhang, Y. (2001-10). Partial internal model control. IEEE Transactions on Industrial Electronics 48 (5) : 976-982. ScholarBank@NUS Repository.
Abstract: Internal model control (IMC) is a well-known and effective control scheme. However, when unstable processes are concerned, the original IMC structure cannot be directly used for control system implementation. In this paper, a new scheme called partial internal model control (PIMC) is proposed, which is capable of controlling both stable and unstable processes. In PIMC, a process model is expressed as the sum of the stable and antistable parts and only the stable part of the process model is used as the internal model. The process stable part is canceled by the internal model and the remaining antistable part is stabilized and controlled with a primary controller, which is usually a PID-type regulator when the antistable part is of a low order. Various properties of a PIMC system such as internal stability and robust stability are analyzed. The design of PIMC is discussed in detail. Various simulation examples are included for illustration and a real-time implementation on a motor system is presented.
Source Title: IEEE Transactions on Industrial Electronics
ISSN: 02780046
DOI: 10.1109/41.954562
Appears in Collections:Staff Publications

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