弾性ヒンジを用いたリニア形超音波アクチュエータの開発 : 有限要素法による弾性ヒンジ構造の評価(機械力学,計測,自動制御)

概要

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An ultrasonic linear actuator with high precision and high thrust has been intensively investigated. As a result, we proposed the actuator with elastic hinge structure between a vibrator and a piezoelectric element. The proposed actuator was compared with conventional linear actuators without elastic hinge by using a finite-element analysis considering piezoelectric effect. Results of analysis show that the proposed actuator could use the resonance phenomenon more effectively and the output power of the proposed actuator was larger than that for conventional linear actuators with not elastic hinge because the ideal vibration modes are generable. Moreover, from the analytical result, it is confirmed that the proposed actuator can be generated elliptic motion of arbitrary form.
2006-09-25