T-S fuzzy control of high-power switching power supply in underground coal mine

In view of the current inadequacy of traditional control strategy, a fuzzy control method of high-power switching power supply based on T-S fuzzy modeling in underground coal mine was proposed. In T-S fuzzy modeling method, antecedent parameters were obtained by fuzzy C-means clustering algorithm and consequent parameters were identified by least square with forget factor. The output voltage was sampled in real-time, the process of T-S fuzzy was analyzed and control variable was obtained, which was used to adjust the duty cycle to change IGBT on-off time, so as to acquire the stable output DC voltage. MATLAB/Simulink simulation was used to verify its correctness and feasibility. The results show that compared with conventional PI control method, the T-S fuzzy control strategy has good effect on the robustness.