Multiple robust track-following controller design in hard disk drives
نویسندگان
چکیده
منابع مشابه
Multiple robust track-following controller design in hard disk drives
This paper presents a new technique for track-following control in hard disk drives, in order to achieve high tracking precision of magnetic read–write heads uniformly for a huge number of disk drives. The basic idea in this technique is to classify the disk drives into several sets depending on dynamics properties, and to apply a robust controller to each set. The problem of designing the opti...
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This paper addresses the design of robust track-following dynamic output feedback controller for hard disk drives (HDDs) in face of parameter uncertainties which can enter into problem description in a possibly non-linear way. The design is performed in a probabilistic framework where the uncertain parameters are treated as random variables and the design specification is met with a given proba...
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This paper proposes controller design methods, specially for track-following control of the magnetic read/write head in a hard disk drive (HDD). The servo system to be considered is a general dual-stage multisensing system, which encompasses most of the track-following configurations encountered in the HDD industry, including the traditional single-stage system. For the general system, a robust...
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Contrary to the conventional method of disturbance observers (DOB) where Q-filter is designed to be a low-pass filter with unity DC gain, the optimal H1 method has been proposed to design the Q-filter and applied in the servo control system of hard disk drives in track following. Simulation and implementation results have shown that the resultant H1 DOB improves low-frequency disturbance attenu...
متن کاملDesign and Implementation of Dual-stage Track-following Control for Hard Disk Drives
This paper discusses the design and implementation of two track-following controllers for dual-stage hard disk drive servo systems. The first controller is designed by combining an outer loop sensitivity-decoupling (SD) controller with an inner loop disturbance observer (DOB). The second is designed by combining mixed H2/H∞ synthesis techniques with an add-on integral action. The designed contr...
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ژورنال
عنوان ژورنال: International Journal of Adaptive Control and Signal Processing
سال: 2008
ISSN: 0890-6327,1099-1115
DOI: 10.1002/acs.994