Robust tracking control of piezoelectric fast steering mirror with hysteresis and disturbances correction

Geng, Wang; Bai, Fuzhong

doi:10.1109/chicc.2015.7259669

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…Even when the transmitter and the receiver are fixed, the laser beam that contains the modulated signals is in need for a precise alignment and correction to ensure a good demodulation of the transmitted signal at the receiver side. Referring to the existing literature, a great deal of interest has been devoted to the control of fast steering mirrors that have been used as key tools for laser beam alignment and correction, see e.g., [1], [2], [3], [4], [5]. Laser-tracking measurement systems based on a vision-guiding device has been proposed in [6].…”

Section: Introductionmentioning

confidence: 99%

Fast and reliable control of steering mirrors with application to free-space communication

Ibrir

Ooi

et al. 2017

2017 International Conference on Advanced Mechatronic Systems (ICAMechS)

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After modeling a laser beam pointing system actuated by a piezo-electric fast steering mirror (FSM), an observerbased linear feedback controller is developed to correct the position of the laser spot communicated by the position sensing detector (PSD). The modeling and the control actions have been considered with and without the hysteresis effect induced by the piezoelectric actuators of the FSM. The design of the feedback is given through the solution of parametric matrix inequalities. It was found that the integral feedback design is very efficient in handling input and system uncertainty. The linearity of the observer-based feedback has facilitated both the real-time implementation of the control strategy and the proof of stability using dynamic-output feedbacks.

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