3P8-24 縦1次屈曲1次多重モード利用矩形板型超音波モータ(ポスターセッション)
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概要
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An ultrasonic motor using the L1-F1 mode with the rectangular plate is fabricated. Using a piezo-ceramic vibrator of 20 x 18 x 3 mm, the maximum speed of 130 mm/s at the input voltage of 90 Vrms, maximum force of 2.8N at the input voltage of 110 Vrms gaining the maximum efficiency of 1.8% are obtained. To improve efficiency, a newer electrode structure shall be advised and tested in the future. Characteristics of the efficiency in this fabricated motor is not so high. Therefore, it is necessary to consider another type of electrode configuration that enables the longitudinal movement and improve the efficiency. The ultrasonic motor of this type is characterized by a simple electrode structure and a relatively low driving frequency, and will find applications by making use of an easily realizable small size. Therefore, it is expected that the USM with a rectangular piezo-ceramic vibrator and the L1-F1 multiplex driving mode will have a promising future.
- 2008-11-11
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