Research on the Control Method of Space Motor Considering Compensation of Parameter Perturbation

Space environment refers to the complex environment including vacuum, heat, electromagnetic radiation and other factors. When motor works in the space environment, the influence of these above environmental factors will cause the parameters of the motor to perturb ,which affects the control performance of the system. Therefore, in order to ensure that the motor system has good control performance in the space environment, it is necessary to realize the online identification of the motor parameters and the online self-tuning of PI controllers. In this paper, the effect of temperature is mainly considered. The parameter identification method based on recursive least square method is used to identify the motor parameters. Based on the mathematical models of control system, the calculation formula of PI parameters is derived. Finally, the proposed methods are verified by simulation and experiments.