Simulation of Servo Motor Drive Control Based on Improved EMD Threshold
Generally,the servo motor generates noise during movement,affecting control accuracy.Therefore,a method of drive control for servo motors based on improved EMD threshold was proposed.Firstly,a mathematical mod-el of a servo motor integrating drive and control was built,and then the driving performance was analyzed.After that,the given three-phase current value was derived through speed detection and position detection on the servo motor.Moreover,the actual motor current was collected through the Hall current sensor.Meanwhile,the collected current was denoised by the improved EMD threshold wavelet filtering method.Furthermore,the difference between the given three-phase current value and the actual motor current was calculated in the servo motor drive control model.Finally,the integrated drive and control of servo motor was achieved in the input linear amplifier.Simulation results show that the proposed method has high precision,strong anti-interference ability,and good effectiveness in driving and controlling the servo motor,so it is more suitable for practical application.
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