Research progress on dynamics modeling and high-precision form-attitude cooperative control of ultra-large-scale flexible spacecraft

Ultra-large-scale spacecraft are the core of major missions such as space-based remote sensing and space resource development. Ultra-large-scale flexible structures with connecting hinges cause problems in dynamic modeling and control, which directly affects the morphology of flexible structures and the accuracy of spacecraft attitude control, and are related to the success or failure of the missions such as high temporal and spatial resolution observations. Therefore, based on the inherent logic and key scientific problems of ultra-large-scale spacecraft dynamics and control, this paper reviews and analyzes the current research progress in hinge friction characteristics and the low-dimensional nonlinear dynamic modeling methods of the rigid-flexible-thermal coupling under complicated thermal loads; the rigid-flexible coupling mechanisms of large spacecraft under nonlinear temperature changing and viscosity-slip friction; the sensor data reconstruction, sensor layout optimization, and efficient parallel computing methods for massive data, as well as the crosstalk compensation mechanisms of highly robust and dynamic distributed sensor information; the form-attitude cooperative control mechanisms under multi-constraints and the high-precision control methods of ultra-large-scale flexible spacecraft; the lightweight and highly dynamic distributed strain and temperature integrated measurement system. This paper further summarizes the development status of the above research fields and the problems to be solved urgently. Finally, prospects are given for common theories and methods that require further breakthroughs in the field of ultra-large-scale flexible spacecraft dynamics and control in the future.