Application of Immune Genetic Algorithm Based Fuzzy RBF Neural Network in High-speed Motorized Spindles

Abstract

To satisfy the control requirements of fast, stable, accurate in the high speed and high performance motorized spindle system, a global optimization control strategy of high-speed motorized spindle which is the organic combination of fuzzy logic control, radial basis function(RBF) neural network and immune genetic algorithm is proposed. The control strategy combines the advantages of fast searching optimization of immune genetic algorithm and independence on spindle system model of fuzzy neural network, and this intelligent control strategy is successfully applied to the speed controller of double closed-loop vector control system for high-speed motorized spindle. The simultaneous optimization of the three types parameters of the intelligent controller can achieve optimal control effect through using IGA, and successfully implement the accurate speed control process. This strategy can accurately control spindle speed and perform quite good anti-interference ability and strong robustness when spindle bears instant impact load, which is verified through experimental and simulation results, and both dynamic and steady performance are improved evidently. The spindle system can achieve high-quality drive finally.