The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Dual-stage actuation consisting of a PZT Microactuator (MA) and a Voice Coil Motor (VCM) has been used to improve the servo bandwidth and the disturbance rejections of Hard Disk Drivers (HDDs). However, the hysteresis in PZT MA limits the performance that can be achieved. In this paper, a Hammerstein model structure consisting of static hysteresis nonlinear block and dynamic linear block is used to...
This paper proposes filtering methods to cancel the impulsive disturbance contained in position error signal (PES) in hard disk drives (HDDs). The impulsive disturbances may be observed as a few single sudden changes or some consecutive changes in PES. The filtering includes impulsive disturbance identification and estimation. A recursive method is used to determine the dynamic boundaries for identification...
This paper investigates a factorization approach to sensitivity loop shaping for disturbance rejection in hard disk drives (HDDs). The advantage of the factorization approach is that the system sensitivity function can be expressed explicitly in terms of a unique design parameter. This greatly simplifies the control design process to make the system sensitivity function match a chosen target sensitivity...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.