Abstract
There have many problems such as multi-interference factors, large delay and difficult to establish accurate mathematical model in temperature control system of water-coal-mixture gasifier. The gasifier temperature control is general realized by fuzzy controller in traditional method, however, the temperature control effect is not very good because the performance of fuzzy controller is affected by many factors. Considering that particle swarm optimization (PSO) algorithm has simple operation and fast convergence, the coding of fuzzy rules are completed by defining an equivalent probability matrix, the appropriate objective function is selected as particle fitness function. Particles with higher fitness degree are obtained by iterative optimization, as the fuzzy control rule, which is applied to the gasifier temperature control. The results of application show the optimized control effect is much better than the original fuzzy controller in the rapidity despite the loss in the stability, to achieve optimal control.
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