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Title: Particle swarm optimization based PID control for minimizing integral square error
Authors: Zhang, H
Liu, J
Keywords: Continuous stirred tank reactor
Fuzzy logic
Gain scheduling
Particle swarm optimization
Issue Date: 2014
Publisher: Revista Tecnica de la Facultad de Ingeniera
Source: Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia, 2014, v. 37, no. 1, p. 1-10 How to cite?
Journal: Revista Tecnica de la Facultad de Ingenieria Universidad del Zulia 
Abstract: In this paper, a new control scheme, the gain scheduled Particle Swarm Optimization (PSO) based PID is proposed for continuous stirred tank reactor(CSTR). CSTR is a highly nonlinear process that exhibits stability in certain region and instability in some regions. Generally, PID controllers are used in these processes. Tuning of PID controller is required for guaranteeing the best performance of the CSTR. The proposed scheme implements the characteristics of the PSO's global optimization to tune the PID's control parameters: kp, ki, kd, to obtain the best control effect by minimizing Integral Square Error online. The PID controller parameters tuned for each region using PSO are gain scheduled using fuzzy. Fuzzy gain-scheduling is a special form of fuzzy control that uses linguistic rules and fuzzy reasoning to determine the controller parameter transition policy for the dynamic plant subject to large changes in its operating state. Simulation result shows the feasibility of using the proposed controller for the control of the dynamical nonlinear CSTR.
ISSN: 0254-0770
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