ループ形状フレキシブルプリントサーキットの動的設計解析

概要

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A new design process is developed for a flexible printed circuit (FPC) that picks up the head signals of a magnetic disk unit, and can optimize the FPC loop shape. The head can be positioned by consideration of dynamic reaction force of FPC. In the process the dynamic treatment of a FPC is regarded as a vibration structure. A calculation method is proposed equivalent bending rigidity (EI) of a complex FPC. The evaluated EI is further used to determine the influence of the dynamic reaction force. A dynamic FEM model and the servo model are used to determine the residual vibration force just after bang-bang seek. Evaluated dynamic reaction force agrees very well with the experimental data. It is clear that the dynamic reaction force is very similar to the shock spectrum of a single degree of freedom. The optimization of FPC jointed to carriage and base for both ends is achieved. The optimum shape is very close to semicircular.
一般社団法人日本機械学会の論文
1996-02-25