The Seek Control Design with Gain-Scheduling in Hard Disk Drives
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 کاملDesign and Dynamics of Flying Height Control Slider With Piezoelectric Nanoactuator in Hard Disk Drives
To achieve the areal density goal in hard disk drives of 1 Tbit/ in.2 the minimum physical spacing or flying height (FH) between the read/write element and disk must be reduced to 2 nm. A brief review of several FH adjustment schemes is first presented and discussed. Previous research showed that the actuation efficiency (defined as the ratio of the FH reduction to the stroke) was low due to th...
متن کاملAn Iterative Learning Control Design for Self-Servowriting in Hard Disk Drives Using L_1 Optimal Control
L Abstract—This paper presents an Iterative Learning Controller (ILC) design for Self-Servowriting (SSW) process in Hard Disk Drives (HDDs). In SSW, the position and timing information are written onto the disk surface by referring to the previously written servo information. This process is repeated until the whole disk is completely written. The main issue in this process is Radial Error Prop...
متن کاملMultiple 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...
متن کاملAn Identification Method of Seek-induced Vibration Modes in Hard Disk Drives
A method to identify the transfer function of HDD head/actuator system modes that have gains that are smaller than the rigid-body mode is presented. Prony’s method is used to identify the frequency and damping of the modes, and the measured actuator current and PES in the time-domain are used to identify the gain of the transfer function of the modes. Overall accuracy is verified by comparing t...
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: International Journal of Fuzzy Logic and Intelligent Systems
سال: 2011
ISSN: 1598-2645
DOI: 10.5391/ijfis.2011.11.1.065