Modified Relay Feedback Approach for Controller Tuning Based on Assessment of Gain and Phase Margins | Zendy

JyhCheng Jeng | Zendy; HsiaoPing Huang | Zendy; Fengyi Lin | Zendy

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Modified Relay Feedback Approach for Controller Tuning Based on Assessment of Gain and Phase Margins

Author(s) -

JyhCheng Jeng,

HsiaoPing Huang,

Fengyi Lin

Publication year - 2006

Publication title -

industrial and engineering chemistry research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.878

H-Index - 221

eISSN - 1520-5045

pISSN - 0888-5885

DOI - 10.1021/ie051310z

Subject(s) - relay , phase margin , pid controller , control theory (sociology) , controller (irrigation) , computer science , margin (machine learning) , phase (matter) , control engineering , control (management) , engineering , bandwidth (computing) , power (physics) , physics , telecommunications , temperature control , quantum mechanics , machine learning , amplifier , agronomy , operational amplifier , artificial intelligence , biology

A relay feedback based method for tuning a PI/PID (proportional−integral−derivative) controller with an assessment of gain and phase margins is proposed. The proposed method estimates the gain and phase margins of an existing control system by a modified relay feedback scheme, where a delay element is embedded between the relay and controller. The gain and phase margins of a control system are used to assess the control performance. When the controller is found not in good performance, the proposed method is then applied to retune the PI/PID controller based on gain- and phase-margin specifications. Simulation results have shown that the proposed method is effective for processes with different kinds of dynamics and for multiloop systems.

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