Title :
Modeling and experiment of pneumatic position system with spring-and-diaphragm actuator
Author :
Qunli, Shang ; Yu Shan´en ; Haiyan, Wu
Author_Institution :
Hang Zhou Dianzi Univ., Hangzhou
Abstract :
In this paper a nonlinear and continuous model of pulse width modulation (PWM)-based pneumatic position system with diaphragm-and-spring actuator is presented via theoretical analysis; against experimental data, the unknown parameters are identified by particle swarm optimization (PSO). Using open-loop tests, the experimental data are obtained by controlling the on/off valves with three different duty ratios: 50, 80, and 100% over a period of 100 ms. The analytical-experimental comparisons show the validity of the model. The modeling is useful for intelligent valve positioner algorithm design, control valve optimization design and actuators fault diagnosis.
Keywords :
control system synthesis; particle swarm optimisation; pneumatic actuators; position control; pulse width modulation; valves; actuators fault diagnosis; continuous model; control valve optimization design; intelligent valve positioner algorithm design; nonlinear model; open-loop tests; particle swarm optimization; pneumatic position system modeling; pulse width modulation; spring-and-diaphragm actuator; Algorithm design and analysis; Data analysis; Intelligent actuators; Open loop systems; Particle swarm optimization; Pneumatic actuators; Pulse width modulation; Space vector pulse width modulation; Testing; Valves; Analytical model; Experiment investigation; Spring-and-Diaphragm actuator;
Conference_Titel :
Control Conference, 2008. CCC 2008. 27th Chinese
Conference_Location :
Kunming
Print_ISBN :
978-7-900719-70-6
Electronic_ISBN :
978-7-900719-70-6
DOI :
10.1109/CHICC.2008.4605715
