Iterative Feedback Tuning (IFT) of Head Positioning Servomechanism in Hard Disk Drive
نویسندگان
چکیده
منابع مشابه
Iterative Feedback Tuning (IFT) of Head Positioning Servomechanism in Hard Disk Drive
Actuators used in hard disk drives (HDD) are produced en mass and therefore their dynamic properties vary within a given tolerance bound. A nominal model representing the batch of actuators is used to design the head positioning servomechanism. Equal performance can not be expected for all actuators when such controller is used. Disk drive servomechanism is expected to provide performance with ...
متن کاملHard Disk Drive via LMIs
In this paper, and mixed / controllers are designed for a hard disk drive (HDD) using linear matrix inequalities (LMIs). In the proposed algorithm, the problem of minimizing track misregistration (TMR) in the presence of unmodeled dynamics of voice-coil motor (VCM) is formulated as robust and mixed / problems. Additional stack variables are introduced to characterize and performances. The simul...
متن کاملPerturbed Iterative Feedback Tuning
Optimal performance of process control requires a controller synthesis based on a performance criterion. In order to minimize the criterion, a model for the process is normally required. Iterative Feedback Tuning (IFT) is a data driven methodology to tune controller parameters given a performance criterion, with penalty on the controlled variable deviations from a desired trajectory and with pe...
متن کاملFundamentals of Hard Disk Drive Acoustics
FIGURE 1 Acoustic Intensity Spectrum for a Typical Disk Drive Under Idle and Seek Operation Conditions. INTRODUCTION In the hard drive industry, drive acoustics are becoming more important than ever. With the introduction of hard drives into new emerging markets in which the consumer is more keenly aware of and sensitive to radiated acoustic noise issues, technical professionals are facing enor...
متن کاملITERATIVE FEEDBACK TUNING WITH GUARANTEEDSTABILITYFranky
This paper presents an identiication-based mechanism for introducing guaranteed stability when using a data-driven model-free iterative control design method known as Iterative Feedback Tuning. Also, the use of unbiased estimates of the Hessian is shown to signiicantly improve the user control over the tuning procedure.
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 on Smart Sensing and Intelligent Systems
سال: 2008
ISSN: 1178-5608
DOI: 10.21307/ijssis-2017-290