Title :
Multivariable controller auto-tuning with its application in HVAC systems
Author :
Wang, Qing-Guo ; Hang, Chang-Chieh ; Zhang, Yong ; Bi, Qiang
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
In this paper, an advanced PID auto-tuner for both single- and multivariable processes is developed and its application to HVAC systems presented. The auto-tuner exploits relay plus step test identification method to suit a wide range of processes including not only linear but also some nonlinear processes. It incorporates two latest PID design rules to achieve high control performance for processes with different dynamic characteristics. Decoupling control is used for multivariable processes. The auto-tuner was implemented on a distributed control system and practically used in industry. Experimental results exhibit the effectiveness and superior performance of the implemented auto-tuner over the manually tuned PID controller and the standard relay auto-tuner
Keywords :
HVAC; distributed control; feedback; identification; multivariable control systems; self-adjusting systems; step response; three-term control; tuning; HVAC systems; PID controller; decoupling control; distributed control; identification; multivariable control system; relay feedback; self tuning; step response; Automatic control; Control systems; Distributed control; Electrical equipment industry; Open loop systems; Process control; Relays; Testing; Three-term control; Tuning;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786390