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Title: Sensing of the time-varying angular rate for MEMS Z-axis gyroscopes
Authors: Salah, M. H.
McIntyre, M. L.
Dawson, Darren M.
Wagner, John R.
Tatlıcıoğlu, Enver
Keywords: Time varying control systems
Adaptive controller
Adaptive observer
Least-squares estimation
MEMS Z-axis gyroscope
Issue Date: Sep-2010
Publisher: Elsevier Ltd.
Source: Salah, M. H., McIntyre, M. L., Dawson, D. M., Wagner, J. R., and Tatlıcıoğlu, E. (2010). Sensing of the time-varying angular rate for MEMS Z-axis gyroscopes. Mechatronics, 20(6), 720-727. doi:10.1016/j.mechatronics.2010.07.001
Abstract: In this paper, a nonlinear estimation strategy for sensing the time-varying angular rate of a Z-axis MEMS gyroscope is presented. An off-line adaptive least-squares estimation strategy is first developed to accurately estimate the unknown model parameters. Both axes of a Z-axis MEMS gyroscope are then actively controlled utilizing an on-line controller/observer to facilitate time-varying angular rate sensing. The proposed nonlinear estimation strategy is developed based on a Lyapunov-based analysis, which proves that the time-varying angular rate experienced by the device can be estimated accurately. Two cases for angular rate are investigated which are time-varying and constant magnitudes. An adaptive controller/observer was also utilized for sensing the angular rate to investigate the performance of the proposed controller/observer. Representative numerical results are discussed to demonstrate the performance of the proposed nonlinear strategy in accurately sensing the applied angular rate. Overall, the proposed nonlinear controller/observer improves sensing the constant angular rate by 50% and the time-varying angular rate by 90% when compared with an adaptive controller/observer. © 2010 Elsevier B.V. All rights reserved.
ISSN: 0957-4158
Appears in Collections:Electrical - Electronic Engineering / Elektrik - Elektronik Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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