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http://dx.doi.org/10.5916/jkosme.2014.38.6.716

GA-based parameter identification of DC motors  

Lee, Yun-Hyung (Education & Research Team, Korea Institute of Maritime and fisheries Technology)
So, Myung-Ok (Division of Marine Engineering, Korea Maritime and Ocean University)
Abstract
In order to design the speed controller of the DC motor system, firstly, parameters estimation of the system must be preceded. In this paper, we proposed the application of genetic algorithm(GA) optimization in estimating the parameters of DC motor. Estimated models are considered both first and second order models, and each estimated model is optimized by minimizing three different types of the evaluation function of GA. Also, GA is imported in comparison with estimation result of numerical analysis method because of its power in searching entire solution space with more probability of finding the global optimum. Data for parameter estimation is acquired from input and output signals of the actual experiment device and the butterworth filter also designs for removing noise in the signals. Finally comparison between real data of the actual device and estimated models is presented to indicate effectiveness and resolution of proposed identification method.
Keywords
DC motor system; Genetic algorithm; Model adjustment technique; Fitness function; Butterworth filter;
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