MNS-13 ACTIVE DAMPING OF MICRO-ACTUATOR FOR HDD TRACKING SERVO(Micro/Nanosystem Science and Technology III,Technical Program of Oral Presentations)
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概要
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One of the potential problems of a microactuator for HDD tracking servo is its resonant motion excited by external disturbances such as air-flow. For a microactuator that uses PZT ceramic as a driving source, one can use the same PZT device as an actuation source as well as a force sensor. By using the sensed force, one can properly design a feed-back system and control the resonant behavior of the system (called active damping). The mechanical system was analyzed, and sensing circuit was designed. Feed-back controller was designed properly such that the resonant motion is damped. Experiment was carried out by using an HDD prototype, and it was demonstrated that the resonant motion caused by airflow was successfully damped, resulting in higher position accuracy of the read/write element
- 一般社団法人日本機械学会の論文
- 2009-06-17