Research on operation smoothness and noise of stepping motor based on new type acceleration/deceleration curve and real-time control scheme

Abstract

Based on acceleration/deceleration curves and control scheme, the operation smoothness and noise of stepping motor were analyzed and studied. According to the relation between angular acceleration and angular velocity (a-ω equation), the S-type, e/e-type and Cos-type acceleration/deceleration curves were constructed respectively, in which the flexible impact can be avoided. Then, the control scheme of stepping motor was optimized, including that the smoothness of stepping motor's speed transition was improved, that the controller's calculation speed was enhanced because of calculation's simplification by iterative algorithm, and that storage resources were saved through real-time calculation. The noise experimental results show that compared with the traditional drive scheme, the stepping motor system, which adopts Cos-type acceleration/deceleration curve and real-time control scheme, operates smoothly and has lesser noise during startup process.