713 光ディスク装置における光ピックアップ構造の動解析と最適化

概要

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A broad servo-bandwidth is required in optical servo systems for realizing higher storage density and servo performance. The aim of this research is to establish design method of an optical pick-up installed in the optical servosystem. A mechanical design of the optical pick-up is presented, which is suitable for achieving higher performance. The optical pick-up is modeled by finite element analysis and the generalized eigenvalue problem is solved to get the natural frequencies of the optical pick-up. Then, the topology/shape optimization is applied to the optical pick-up to achieve the broad servo-bandwidth. The density of each finite element is adopted as design variable in the topology/shape optimization. The effectiveness of the proposed method is verified by some simulation results.
社団法人日本機械学会の論文
2002-09-13