Title :
PI tuning for processes with large dead time
Author :
Wang, Ya-gang ; Shao, Hui-he ; Wang, Jmgcheng
Author_Institution :
Res. Inst. of Autom., Shanghai Jiaotong Univ., China
Abstract :
In this paper, a simple PI controller tuning method for processes with large dead time is proposed. Firstly, a first-order plus dead time model is identified based on relay feedback experiment, which Nyquist plot is extremely close to that of the real processes with large dead time over the frequency range of ω0~ωc. Then PI controller are designed based on sensitivity specification. Simulation examples show the effectiveness and feasibility of the proposed PI tuning method in handling processes with large dead time
Keywords :
Nyquist diagrams; control system synthesis; feedback; relay control; two-term control; Nyquist plot; PI controller tuning method; first-order-plus-dead-time model; relay feedback experiment; Automatic control; Automation; Delay effects; Design methodology; Frequency; Industrial control; Process control; Relays; Robust control; Tuning;
Conference_Titel :
American Control Conference, 2000. Proceedings of the 2000
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-5519-9
DOI :
10.1109/ACC.2000.877027
