Title :
A multivariable laboratory process with an adjustable zero
Author :
Johansson, Karl Henrik ; Nunes, José Luís Rocha
Author_Institution :
Dept. of Autom. Control, Lund Inst. of Technol., Sweden
Abstract :
A novel multivariable laboratory process that consists of four interconnected water tanks is presented. The linearized dynamics of the system have a multivariable zero that is possible to move along the real axis by changing a valve. The zero can be placed in both the left and the right half-plane. In this way the quadruple-tank process is ideal for illustrating many concepts in multivariable control, particularly performance limitations due to multivariable right half-plane zeros. Accurate models are derived from both physical and experimental data and multi-loop control is illustrated
Keywords :
closed loop systems; dynamics; identification; interconnected systems; laboratory techniques; linearisation techniques; multivariable control systems; nonlinear systems; poles and zeros; adjustable zero; closed loop systems; identification; interconnected water tanks; laboratory process; linearized dynamics; multiple loop control; multivariable control systems; nonlinear systems; Automatic control; Helicopters; Industrial control; Informatics; Laboratories; Magnetic levitation; Mathematical model; Mechanical systems; Valves; Voltage;
Conference_Titel :
American Control Conference, 1998. Proceedings of the 1998
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-4530-4
DOI :
10.1109/ACC.1998.702986
