Design and fabrication of a piezoelectric instrumented suspension for hard disk drives

Stanley Kon; Kenn Oldham; Ryan Ruzicka; Roberto Horowitz

doi:10.1117/12.658589

11 April 2006 Design and fabrication of a piezoelectric instrumented suspension for hard disk drives

Stanley Kon, Kenn Oldham, Ryan Ruzicka, Roberto Horowitz

Proceedings Volume 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems; 617430 (2006) https://doi.org/10.1117/12.658589
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2006, San Diego, California, United States

Abstract

As data densities in computer hard disk drives increase, airflow-induced vibration of the disk drive suspension becomes a major barrier to positioning the read-write head with sufficient precision. One component in reducing these vibrations is a dedicated sensor system for detecting vibration on the sensor arm directly, which enables high-frequency sampling and modal selectivity. In this paper, an efficient method for identifying optimal position and shape of piezoelectric strain gages on a flexible structure is presented, and applied to the steel suspension of a hard disk drive. Zinc oxide deposition processes are adapted to steel substrates, and used to fabricate miniature zinc oxide strain gages at the optimal strain gage location. Substrates with sensors installed were assembled into full disk drive suspensions and tested in a commercial disk drive.

Citation Download Citation

Stanley Kon, Kenn Oldham, Ryan Ruzicka, and Roberto Horowitz "Design and fabrication of a piezoelectric instrumented suspension for hard disk drives", Proc. SPIE 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, 617430 (11 April 2006); https://doi.org/10.1117/12.658589

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