This paper investigates the permanent magnet synchronous motor(PMSM) speed regulation system using terminal sl...
LI Shihua~1,ZHOU Mingming~1,YU Xinghuo~2 1.School of Automation,Southeast University,Key Laboratory of Measurement and Control of CSE,Ministry of Education,Nanjing 210096,P.R.China 2.Platform Technologies Research Institute,RMIT University,VIC 3001,Australia
In this paper, the attitude stabilization problem of a rigid spacecraft described by Rodrigues parameters is investigated via a composite control strategy, which combines a feedback control law designed by a finite time control technique with a feedforward compensator based on a linear disturbance observer （DOB） method. By choosing a suitable coordinate transformation, the spacecraft dynamics can be divided into three second-order subsystems. Each subsystem includes a certain part and an uncertain part. By using the finite time control technique, a continuous finite time controller is designed for the certain part. The uncertain part is considered to be a lumped disturbance, which is estimated by a DOB, and a corresponding feedforward design is then implemented to compensate the disturbance. Simulation results are employed to confirm the effectiveness of the proposed approach.
