有刷直流电机振动转矩测试及其抑制方法

摘要

对有刷直流电机的振动转矩进行了实际的测试，并从换向过程和气隙磁场分布情况进行推导，表明有刷直流电机振动转矩的客观存在。并在此基础上，提出了一种抑制振动转矩的方法。通过调节换向片的空间相对位置，使得转子在换向过程中产生的振动转矩分量错开一定的电角度，相互叠加后可有效地减小电磁转矩中的振动分量，最后通过实验证明了该方法的有效性。%Seen from the air-gap magnetic field distribution of the commutation process,vibration torque of brush DC motor exists. Aiming at the DC motor shaft vibration torque,specifically analyzed from the cause to the theoretical analysis and experimental measurements,a theoretical analytic method and an experimental measurement method are proposed. At the same time,based on the theoretical analysis and experimental measurements,a supression method of vibration torque is proposed. Through the experiment,it is found that the analytical results consistent with the experimental results. This proves the effectiveness of the method.