Research on adaptive control algorithm of jitter in laser beam pointing and tracking system

This paper presents the Lyapunov-based decentralized adaptive control scheme for a laser beam steering system with a piezo-electric mirror. This controller which this paper designs effectively solves the problem that the piezoelectric steering system is complex dynamics and can not know state of controlled plant. The system uses a decentralized control technology which decouples the interaction of channels. Meanwhile, it introduces the nonlinear and the errors of parameters drift and adds the adaptive feedback and feedforward, which effectively improves the tracking precision and suppress the strong coupling of the azimuth and elevation channel, noise disturbance and satellite platform vibration. And the stability is analysed by deciding the adaptive parameters with Lyapunov function. Finally, the simulation results indicate that the control scheme is proved to be valid and reliable.