VARIABLE STRUCTURE CONTROL OF BRUSHLESS DC MOTOR SPEED REGULATING SYSTEM

摘要

This paper presents a brushless DC (BLDC) motor speed regulating system with variable structure control. In this paper the performance characteristics of BLDC motor are researched, while the system's performance and control characteristics are analyzed after speed feedback being used. According to the system's different operation states, the two models (variable speed and steady speed) control strategy is put forward to develop the system' s response and steady state accuracy. At last, the experimental results of the system are supplied, and the feasibility of the control strategy is verified by the results.