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Enhanced position control for pneumatic system by applying constraints in MPC algorithm

Sulaiman, S. F. and Rahmat, M. F. and Faudz, A. A. M. and Osman, K. and Salim, S. N. S. and Samsudin, S. I. and Azira, A. R. (2017) Enhanced position control for pneumatic system by applying constraints in MPC algorithm. International Journal of Electrical and Computer Engineering, 7 (3). pp. 1633-1642. ISSN 2088-8708

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Abstract

This paper demonstrates the effectiveness of applying constraints in a controller algorithm as a strategy to enhance the pneumatic actuator system's positioning performance. The aim of the present study is to reduce the overshoot in the pneumatic actuator positioning system's response. An autoregressive with exogenous input (ARX) model structure has been used to model the pneumatic system, while a model predictive control (MPC) has been employed as a control strategy. The input constraint has been applied to the control signals (on/off valves signals) to ensure accurate position tracking. Results show that the strategy with constraint effectively reduced overshoot by more than 99.0837 % and 97.0596 % in simulation and real-time experiments, respectively. Moreover, the performance of the proposed strategy in controlling the pneumatic positioning system is considered good enough under various loads. The proposed strategy can be applied in any industry that used pneumatic actuator in their applications, especially in industries that involved with position control such as in manufacturing, automation and robotics. The strategy proved to be capable of controlling the pneumatic system better, especially in the real-time environment.

Item Type:Article
Uncontrolled Keywords:Constraint, Model predictive control, Overshoot, Pneumatic actuator, Positioning control
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:77070
Deposited By: Fazli Masari
Deposited On:30 Apr 2018 14:38
Last Modified:30 Apr 2018 14:38

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