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Title: Normal-mode-inaction adaptive PID controller
Authors: Hang, Chang Chieh 
He, Shi-Zhong
Lee, Tong Heng 
Issue Date: 1993
Source: Hang, Chang Chieh,He, Shi-Zhong,Lee, Tong Heng (1993). Normal-mode-inaction adaptive PID controller. IFAC Symposia Series (8) : 383-388. ScholarBank@NUS Repository.
Abstract: This paper presents a new adaptive PID controller that we call the normal-mode-inaction (NMI) adaptive PID controller. Unlike the conventional adaptive PID controller, its control parameters are normally fixed, and adaptation only occurs when there is a significant change in the magnitude or phase of certain point on the Nyquist plot that is being tracked continuously. In the proposed NMI adaptive PID controller, a relay tuning procedure is used to initialize the adaptive controller. The adjustment of the PID controller parameters is based on the refined Ziegler-Nichols tuning formula. Simulation results and analysis have confirmed that the NMI adaptive PID controller has improved robustness properties.
Source Title: IFAC Symposia Series
ISBN: 0080417175
ISSN: 09629505
Appears in Collections:Staff Publications

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