Vibration test apparatus with an actuator coupled to a reaction mass movable along a linear axis

US8100017B1 · kind B1 · utility

Assignee

• Western Digital Technologies, Inc. · US

Inventors

• Daniel Blick · San Francisco, US
• Michael Herrmann · Mindelheim, DE

Key dates

• Filing date: Jun 15, 2009
• Grant date: Jan 24, 2012
• Expiry date: Jul 28, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49002
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A testing apparatus, for subjecting a device-under-test to oscillating acceleration, includes a stage having a mounting surface attachable to the device-under-test. An actuator is coupled to the stage, and also coupled to a reaction mass movable along a linear axis. A first flexure plate has a first flexure plate middle and a first flexure plate periphery, with the first flexure plate middle attached to the stage at a first stage end. A second flexure plate has a second flexure plate middle and a second flexure plate periphery, with the second flexure plate middle attached to the stage at a second stage end that opposes the first stage end. The first flexure plate periphery and the second flexure plate periphery are attached to the frame. The first and second flexure plates define major surfaces that are substantially perpendicular to the linear axis.