High-Precision Control for a Single-Gimbal Magnetically Suspended Control Moment Gyro Based on Inverse System Method

To effectively reject the influence of gyroscopic effects and gimbal movement on system stability and precision for a single-gimbal magnetically suspended control moment gyro (SGMSCMG), this paper proposes a new control strategy combining an inverse system method and internal model control. The SGMSCMG is modeled using both analytic relationships and experimental data, and its inversion is implemented in a current-mode approach. The common problems associated with the current-mode linearization are successfully handled via compensation filters and internal model controllers. The effectiveness and superiority of this proposed strategy have been demonstrated by both simulation and experimental results.