1-2hit |
Junichi KISHIGAMI Tetsuo MIKAZUKI Yasuhiro KOSHIMOTO
This paper discusses a simplified three-dimensional (3-D) calculation method based on FEM (Finite Element Method) developed for the analysis of film heads. The calculation derived from the method allows for reproductive efficiency computation on film heads taking a 3-D configuration into consideration. As the calculation uses a two-dimensional (2-D) analysis program substituted for the full 3-D treatment, this program is, therefore, fast enough to be used interactively. The calculated results show that the head efficiency dependences of taper and yoke patterns are significant. The method is suitable for film heads with complicated geometries, because any individual length or pattern dependences can be calculated quite readily.
Koji OTANI Junichi KISHIGAMI Yasunaga MITSUYA
A three-dimensional magnetic field analysis method is applied to flat-type magnetic circuits for a head positioning actuator. Calculated results agree well with experimental results. This method also leads a better magnetic circuit structure which realizes a uniform magnetic field distribution.