Performance of hard disk drives in high noise environments
نویسندگان
چکیده
منابع مشابه
Hard Disk Drives Control in Mobile Applications
In this paper, control design is investigated for hard disk drives in mobile applications with unknown external arbitrarily fast time-varying disturbances. The disturbances can be estimated with exponential accuracy using the proposed disturbance observer based on a series of integral filters. The position error signal will converge to zero with the proposed control technique for systems subjec...
متن کاملA Stochastic Analysis of Hard Disk Drives
We provide a stochastic analysis of hard disk performance, including a closed form solution for the average access time of a memory request. The model we use covers a wide range of types and applications of disks, and in particular it captures modern innovations like zone bit recording. The derivation is based on an analytical technique we call “shuffling”, which greatly simplifies the analysis...
متن کاملModeling and Cancellation of Pivot Nonlinearity in Hard Disk Drives
This paper considers the issue of modeling the pivot nonlinearity in a typical hard disk drive, taking into account viscous friction, Coulomb friction and hysteresis effects. It presents a nonlinear compensator design, based on a proposed model, to make the compensated system behave like a double integrator regardless of the magnitude of the input current. It describes extensive experiments, ca...
متن کاملDisturbance Suppression beyond Nyquist Frequency in Hard Disk Drives
In conventional hard disk drives, a control system compensates for vibration in which the frequency is higher than the Nyquist frequency by using a multi-rate filter that decreases the gain above the Nyquist frequency. However, such a control system can only avoid instability and cannot suppress disturbances above the Nyquist frequency. In response to this problem, a control system design metho...
متن کاملNonlinear Mid-frequency Disturbance Compensation in Hard Disk Drives
In single-stage hard disk drives (HDDs), it is difficult to suppress midfrequency narrow band disturbances caused by disk flutter or windage effectively. This article presents a nonlinear compensation scheme to deal with narrow band disturbance around 1 kHz. The nonlinear compensator that provides additional phase lead without degrading the magnitude characteristic is proposed. This scheme is u...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Noise Control Engineering Journal
سال: 2017
ISSN: 0736-2501
DOI: 10.3397/1/376555