The Proceedings of the Symposium on the Motion and Vibration Control
Online ISSN : 2424-3000
2010
Session ID : 1B25
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1B25 Mixed Sensitivity Problem in Sampled-Data Positioning Control System
Takenori ATSUMIWilliam C. MESSNER
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
In this paper, we have developed an analysis and synthesis method for mixed-sensitivity problems in sampled-data positioning control systems. To avoid complicated calculations, this method uses frequency responses of the controlled object and the digital controller for calculating the characteristics of the control system. This paper shows relationships between the sensitivity function and complementary sensitivity function for the mixed sensitivity problem in a sampled-data positioning control system. This paper also addresses the mixed sensitivity for multi-rate control systems that include an interpolator, a multi-rate filter, and a multi-rate hold. Simulations and experiments conducted on the sampled-data positioning control system of a head-positioning control system in a hard disk drive verify the validity of the proposed method.
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© 2010 The Japan Society of Mechanical Engineers
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