With consideration of skin depth and demagnetizing effect, the method calculated the brake torque under different air space.Through comparing, we find the theoretical data accords with test data.

• 该方法考虑了集肤深度,对涡流去磁效应运用了折算的计算方法,编程计算了在不同气隙情况下的制动力矩,并与实际情况进行了比较,理论计算值与试验值基本吻合,说明该方法可行。