Adaptive control for light-beam stability in mechanical vibration environment

In adverse mechanical vibration environment, the light-beam stability control becomes the key technique to improve the performance of optical system. Being encountered to the problem of light-beam stability control of two-dimension optical system in vibration environment, the model reference adaptive control system is established based on the theory of matrix optics, vibration mechanics, photoelectric detecting technique and automation theory. A new photoelectric detecting method was proposed, the principle of piezoelectricity actuator was described, and the numerical simulation example was given in details. The results show that the system is of broad bandwidth and fast response, and strong robustness to random initial values. It can improve response characteristic and control precision by choosing variable parameters reasonably. High precision photoelectric displacement detecting and high driving quality of piezoelectricity actuator are the key techniques to realize the light-beam stability control system.