tailieunhanh - Tuning pid controller bases on chemical reaction optimization algorithm

In this paper, we describe the application of CRO algorithm to search optimal parameters for PID controller because CRO combines both features of local and global searching techniques to increase the chance of finding global solution. The comparison of tuning PID controller by CRO and traditional Ziegler-Nichols method is also presented. The simulated results show the advantages of tuning PID using CRO compared to traditional methods in terms of performance indices and transient responses. | HNUE JOURNAL OF SCIENCE DOI Natural Sciences 2019 Volume 64 Issue 6 pp. 161-172 This paper is available online at http TUNING PID CONTROLLER BASES ON CHEMICAL REACTION OPTIMIZATION ALGORITHM Nguyen Ba Nghien and Nguyen Van Tinh Department of Information Technology Hanoi University of Industry Abstract. Chemical Reaction Optimization CRO algorithm plays an important role to determine optimal parameters of PID controller in which the model of DC motor is used as a plant. Tuning PID controller using the traditional Ziegler- Nichols ZN method usually produces large overshoot and Integral time absolute error Integral absolute error and Integral square error performance indices. Therefore recently researchers have applied random search approaches such as Genetic algorithm GA Particle Swarm Optimization PSO and Grey Wolf Optimizer GWO to find optimal parameters for PID controller. Among modern heuristic algorithms CRO was introduced in 2010 it combined advantage features of both GA and Simulated Annealing SA to find global minimum in search space. In this paper we describe the application of CRO algorithm to search optimal parameters for PID controller because CRO combines both features of local and global searching techniques to increase the chance of finding global solution. The comparison of tuning PID controller by CRO and traditional Ziegler-Nichols method is also presented. The simulated results show the advantages of tuning PID using CRO compared to traditional methods in terms of performance indices and transient responses. Keywords Tuning PID CRO algorithm Ziegler-Nichols method performance index optimization. 1. Introduction Proportional Integral and Derivative PID controllers have been used in industrial control applications for a long time. This is due to its simplicity low-cost design and robust performance in a wide range of operating conditions. According to a survey in 1998 nearly 90 of the controllers used in