Title :
Identification and self-tuning control of electro-pneumatic actuator system with control valve
Author :
Sunar, N.H. ; Rahmat, M.F. ; Faudzi, A.M. ; Ismail, Z.H. ; Salim, S.N.S.
Author_Institution :
Dept. of Mechatron. & Control Eng., Univ. Teknol. Malaysia, Skudai, Malaysia
Abstract :
In this paper, a mathematical modeling of pneumatic actuator system is developed by using RLS algorithm. An ARX model is chosen for the model structure. In order to cater the time-varying parameter of pneumatic system, a self-tuning controller is implemented based on the pole-assignment controller. An online RLS algorithm update the parameter estimation at every sample interval. The pole-assignment control parameter is then updated accordingly to the changes of the system parameters. Result of the system performance is compared with the conventional PID controller optimized by PSO algorithm. It is observed that the self-tuning controller performed well with almost zero error at steady state condition and overshoot less than 1%.
Keywords :
adaptive control; autoregressive processes; electric actuators; least squares approximations; pneumatic actuators; pole assignment; recursive estimation; self-adjusting systems; time-varying systems; valves; ARX model; autoregressive with external input model; control valve; electropneumatic actuator system identification; mathematical modeling; model structure; online RLS algorithm; overshoot; parameter estimation; pole assignment control parameter; recursive least square algorithm; sample interval; self-tuning controller; steady state condition; system parameters; system performance; time-varying parameter; zero error; Conferences; Data models; Mathematical model; Pneumatic systems; System identification; ARX; RLS; pneumatic; pole-assignment; self-tuning;
Conference_Titel :
System Engineering and Technology (ICSET), 2013 IEEE 3rd International Conference on
Conference_Location :
Shah Alam
Print_ISBN :
978-1-4799-1028-1
DOI :
10.1109/ICSEngT.2013.6650155