Abstract: Abstract:Starting from the logic design of coal conveying control system and the electrical control circuit design, the design methods of the faulttolerant coal conveying control system were analyzed. The practical application shows that to adopt these faulttolerance design methods can raise the reliability and the robustness of the coal conveying control system, and then the operation efficiency of the coal handling system can be improved greatly.

Key words: Keywords:coal conveying control system, onoff control system