一种高稳定度帆板驱动系统的T-S模糊复合控制器

为减少帆板驱动机构（SADA）对太阳帆板挠性模态的激励作用，以扰动力矩较小的永磁同步电机(PMSM)作为驱动源，提出一种T-S模糊控制与校正网络相结合的控制方法。利用校正网络增加系统的相位裕度和增益，并通过T-S模糊控制器降低系统的超调和非线性摩擦的影响，从而有效抑制太阳帆板的振动。通过圆判据对带有此控制器的驱动系统进行了稳定性证明，很好地解决了模糊控制系统在摩擦扰动下难以进行频域理论分析的缺陷。仿真结果表明，在非线性摩擦等扰动的影响下，该控制方法能够很好地抑制太阳帆板引起的挠性振动，提高系统的速度精度和稳定度，具有较好的动态性能。

T-S Fuzzy Composite Controller for High Stability SADA

In order to suppress the flexible vibration resulted from solar array, the permanent magnet synchronous motor (PMSM) is chosen as a drive source. A composite controller composed of a T-S fuzzy controller and a new lead-lag network is proposed. The lead-lag corrective network is used to increase phase margin of solar array drive assembly (SADA) system, and the T-S fuzzy controller is used to reduce the overshoot of system and the effect of the nonlinear friction, thus effectively suppressing the vibration caused by SADA.The stability of the system with the composite controller is proved by using circle criterion. The defect that fuzzy control system with friction disturbance is difficult to prove the stability is overcome.Simulation results indicate that this method can suppress the flexible vibration caused by SADA system under the effect of the nonlinear friction, improve the velocity stability of the system and has better dynamic performance.