Please use this identifier to cite or link to this item:
https://doi.org/10.1109/AMC.2008.4516076
Title: | Robust H∞ compensation for external vibration on hard disk drives in mobile applications | Authors: | Du, C. Ge, S.S. Hong, F. Zhang, J. Lewis, F.L. |
Issue Date: | 2008 | Citation: | Du, C.,Ge, S.S.,Hong, F.,Zhang, J.,Lewis, F.L. (2008). Robust H∞ compensation for external vibration on hard disk drives in mobile applications. International Workshop on Advanced Motion Control, AMC 1 : 260-265. ScholarBank@NUS Repository. https://doi.org/10.1109/AMC.2008.4516076 | Abstract: | Compensation for external vibration impact on the positioning accuracy of hard disk drives is considered with the presence of actuator uncertainty in this paper. The low-frequency mode change due to actuator pivot nonlinearity of the voice-coil-motor (VCM) actuator is described as frequency and damping uncertainty. A robust feedforward controller is then designed in continuous time domain by using H∞ method to attenuate the impact with the aid of a sensor to detect external vibrations. The linear matrix inequality (LMI) approach is adopted to solve the robust H∞ feedforward control design problem. The application results in a 1.8-inch disk drive with an accelerometer to measure acceleration signal show that 27% to 91% reduction of the position error signal is achieved with the robust feedforward controller when the frequency changes in 70±50 Hz and damping in 0.4±0.3. The effectiveness of the robust feedforward control is also demonstrated to be better than nominal feedforward control. © 2008 IEEE. | Source Title: | International Workshop on Advanced Motion Control, AMC | URI: | http://scholarbank.nus.edu.sg/handle/10635/84144 | ISBN: | 9781424417032 | DOI: | 10.1109/AMC.2008.4516076 |
Appears in Collections: | Staff Publications |
Show full item record
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.