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为验证小卫星大角度姿态快速机动与高精度稳定控制能力,基于单轴气浮台硬件仿真环境,提出了一种利用推力器与飞轮组合的联合控制策略。采用相平面控制技术与有限时间控制理论设计控制器,利用推力器实现无超调的快速机动控制,利用飞轮实现有限时间内的高精度稳定控制,使单轴台在有限时间内快速高精度稳定于目标姿态。物理仿真结果表明:该方法在有限时间内完成单轴台快速稳定控制的同时,可有效避免机动过程中的超调现象,且能有效规避推力器的频繁开关与飞轮的过快饱和等问题。
In order to verify the rapid maneuvering and high precision stability control of small satellite large-angle attitude, a joint control strategy based on the combination of thruster and flywheel is proposed based on hardware simulation environment of single-axis flotation platform. Adopting phase plane control technology and finite time control theory to design controller, using thrusters to achieve rapid maneuvering without overshooting, using flywheel to realize high precision and stable control within a limited time, so that the single-axis stage can be quickly and accurately stabilized in a limited time In the target posture. The physical simulation results show that the method can effectively avoid the overshoot in the maneuvering process and can effectively avoid the frequent switching of the thruster and the over-saturation of the flywheel, etc., while completing the fast and steady control of the uniaxial stage in a limited time.