Research on Parameter Identification of Closed Loop Control System of Electromagnetic Speed Regulation Coal Cutter

Electromagnetic speed regulation coal cutter has simple structure and high performance cost ratio, and the PID or improved PID controller can enable stable and high efficiency operation of coal cutter. Since the underground coal mine has complex and uncertain operation condition, the coal cutter during actual operation may not reach the predicted performance requirement, controller parameter shall be adjusted. Electromagnetic speed regulation coal cutter system parameter identification method, on the basis of relay feedback self-tuning, is proposed, and relay cascade feedback control is introduced to respectively online optimize control parameter of speed loop and current loop, update controller parameter, and evaluate system response performance. The simulation and test result verifies the effectiveness of parameter identification result of the method, and improves the anti-jamming capability of the control system.