A method for two-axis decoupling of a fast mirror with adaptive active compensation
By using an adaptive sliding mode control method to estimate and compensate for the coupling and uncertainty of the voice coil motor fast reflector online, the inter-axis coupling problem was solved, achieving high-precision, low-jitter beam pointing control and improving the stability and control performance of the space laser communication system.
Patent Information
- Application Number
- CN202610847296.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-12
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies for space laser communication, voice coil motor fast reflectors suffer from inter-axis coupling problems due to installation errors, flexible support dynamics, and manufacturing errors. Furthermore, existing decoupling control methods are highly dependent on model accuracy, leading to unstable control performance and frequent chattering phenomena.
An adaptive sliding mode control method is adopted. By estimating and compensating for coupling and uncertainties online, an adaptive sliding mode control law and an H∞ state observer are designed to reduce the dependence on the accuracy of the system model, suppress chattering, and achieve high-precision beam pointing control.
It effectively suppressed the influence of inter-axis coupling, reduced the parameter tuning complexity after the control algorithm was ported, ensured the high dynamic performance and robustness of the system, avoided chattering, and achieved high-precision beam pointing control.
Smart Images
Figure CN122411070A_ABST