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This article presents the design and experimental implementation of an observer-based model predictive control (OMPC) scheme with a notch filter which aims to compensate for the effects of creep, hysteresis, cross-coupling, and vibration in piezoactuators in order to improve the nanopositioning of an atomic force microscope (AFM). The controller design is based on an identified model of the piezoelectric...
This paper presents the design and experimental implementation of an observer-based model predictive control scheme with a notch filter to achieve accurate tracking and fast scanning for an atomic force microscope (AFM). The proposed controller reduces the tracking error by improving the damping of the resonant modes of the AFM piezoelectric tube scanner (PTS). The design of this controller is based...
This paper demonstrates the design and experimental implementation of an observer based model predictive control (OMPC) with a notch filter for the positioning of the piezoelectric tube (PZT) scanner of an atomic force microscope (AFM). This control scheme achieves active damping of the resonant mode of the PZT scanner and accurate tracking of a reference triangular signal. Kalman filter is used to...
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