Short Span Seeking Control System of Hard Disk Drives Based on Pivot Friction Compensation

This paper describes a head positioning controller in HDDs based on a dynamic characteristic of rolling friction. In the control system in HDDs, the head assembly was influenced the effect of several disturbances, e.g., RRO, flutter vibration, force disturbance, and so on. At the force disturbance, it caused by wind force, external shock, tension force of Flexible Printed Circuit, and rolling friction around pivot bearing. In these force disturbances, the influence of the rolling friction is large at positioning in minute area. Therefore, controlling the rolling friction is important at short span seeking for the high performance trajectory. In the past research, we proposed the friction model that considered about the dynamic characteristics of rolling friction. However, this model expressed only the friction motion of short span seeking operation, and was not able to express the friction characteristic of various operations. Therefore, we present a new friction model that considered a velocity characteristic based on Koizumi's model. And we propose a 2 DOF control system to suppress the effect of the rolling friction with dynamic characteristic. The effects of the proposed friction model and controller performance are verified by experimental results of short span seeking operation.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Short Span Seeking Control System of Hard Disk Drives Based on Pivot Friction Compensation

Cited by 2 publications

References 4 publications

Head positioning control system design based on dynamic characteristic of rolling friction in HDDs

Head positioning control system design based on dynamic characteristic of rolling friction in HDDs

High accuracy tracking control using friction model with velocity characteristic in short span seeking operation

Contact Info

Product

Resources

About