High-speed position control of SPMSM using rapid current profiling technique based on angular impulse

Recently, stepping motors have been widely used in the field of industrial manufacturing for high-speed position control over minute distances. Furthermore, fast and precise position control at finer angles is strongly required. However, a few problems hinder the satisfaction of these requirements when using a stepping motor. For example, the motor becomes expensive and its size increases, and the number of poles increases structurally. To overcome these problems, a surface permanent magnet synchronous motor (SPMSM) is commonly employed for high-speed position control. In this paper, a rapid current profile is designed by using a new current profiling method based on the angular impulse of acceleration and deceleration, and the SPMSM is operated by proposed current profile. In the experimental results, it is confirmed that faster and more precise and stable position control is achieved by the proposed method.