With the wide application of Permangent Manget Synchronous Motor(PMSM) in many fields, the PMSM servo system have already become the research focus in the field of electric automation.

• 随着永磁同步电机在许多领域得到广泛应用，永磁同步电机伺服系统现已成为电气自动化领域的研究热点。