基于并联平台的航天器载荷敏捷控制方法OA

To achieve agile attitude pointing of spacecraft payloads,this paper proposes a composite control method for spacecraft optical payloads based on a three-degree-of-freedom pointing platform.First,a dynamic model of the spacecraft system is established using the Kane equation and constraint equations.Second,a strong tracking unscented Kalman filter algorithm is designed by employing multi-source information fusion technology to improve the attitude determination accuracy of both the spacecraft bus and the pointing platform.For the composite control system consisting of the strut length control subsystem and the spacecraft bus attitude control subsystem,a control law incorporating planning,compensation,and feedback is developed to achieve high-precision cooperative control of the pointing platform and the spacecraft bus.Finally,the proposed method is validated through numerical examples.Simulation results demonstrate that the method can effectively accomplish tasks such as large-angle maneuvering and periodic scanning,satisfying the requirements for attitude pointing stability and overall spacecraft maneuvering performance,thereby verifying the effectiveness of the proposed method.