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Experimental implementation of extended multivariable PPF control on an active structure

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3 Author(s)
S. O. R. Moheimani ; Sch. of Electr. Eng. & Comput. Sci., Univ. of Newcastle, NSW, Australia ; B. J. G. Vautier ; B. Bhikkaji

This paper reports experimental implementation of an extended positive position feedback (PPF) controller on an active structure consisting of a cantilevered beam with bonded collocated piezoelectric actuators and sensors. Stability conditions for PPF control are rederived to allow for a feed-through term in the model of the structure. This feed-through term is needed to ensure that the system's in-bandwidth zeros are captured with reasonable accuracy. The set of stabilizing PPF controllers is shown to be a convex set characterized by a set of linear matrix inequalities. A number of multivariable PPF controllers are designed and successfully implemented on the structure.

Published in:

IEEE Transactions on Control Systems Technology  (Volume:14 ,  Issue: 3 )