Patent ID: 6708082
Filing Date: 2004-03-16
Classification: G02B

Abstract:
A method of calibrating a micro-electro-mechanical (MEM) mirror control system, the method comprising the steps of:providing a MEM mirror and a MEM mirror control system comprising a PID controller comprising proportional, integral, and derivative gain elements, a state estimator element, and a feed-forward control element defined in association with look-up table parameters; measuring the resonant frequency and gain associated with the MEM mirror; adjusting the PID controller gain elements such that each gain element has a desired gain which is a first function of the MEM mirror gain and resonant frequency; adjusting the state estimator element such that predetermined state estimator parameters are second functions of the MEM mirror gain and resonant frequency; and scaling the feed-forward look-up table parameters such that the look-up table parameters are third functions the MEM mirror gain and resonant frequency.