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

Salim Ibrir, Chun-Yi Su, Boon S. Ooi, Mohamed-Slim Alouini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


After modeling a laser beam pointing system actuated by a piezo-electric fast steering mirror (FSM), an observer-based 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.
Original languageEnglish (US)
Title of host publication2017 International Conference on Advanced Mechatronic Systems (ICAMechS)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Print)9781538626023
StatePublished - Mar 15 2018

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KAUST004
Acknowledgements: This work is supported by the Deanship of Scientific Research (DSR) at KFUPM under grant, referenced KAUST004. The authors would like to express their thanks to the DSR for its support and assistance.


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