The Light-beam Pointing Stability Techniques Based On FSM

With the extension of application fields of optical systems, optical equipments that combine numerous research achievements, such as high-energy laser systems for long-distance propagating, space optical communication systems, high-precision laser processing equipments and high-precision measuring instruments, have'walked'from laboratories to engineering environments. However, all kinds of dynamic disturbances, such as surrounding temperature changes, atmosphere turbulence, fog and dust, and mechanical vibration caused by various sources, may influence the performance of the systems, which prevent the optical techniques from going into practice. Based on the Opto-mechatronics technique, this dissertation investigates the light–beam tracking and pointing direction stability techniques. The main works include:The Opto-mechatronics technology and the state-of-the-art of the light-beam tracking, pointing direction stability techniques are introduced. A precise tracking system mainly composed of a Fast Steering Mirror and Position Sensitive Detector is established. In order to solve the problem of pointing direction instability of light-beam transmission, a control scheme of pointing direction stabilizing is presented. The electromechanical dynamic model of the Fast Steering Mirror is built. The light-beam precise tracking system based on Fast Steering Mirror is simulated, and reasonable results are obtained. The experimental setup is established. The experimental results indicate that the schemes of the precise tracking system and pointing direction stabilizing are feasible. The circuits and the arithmetic are introduced in detail.