Rod-Type Ultrasonic Motor Using Two Degenerate Second Flexural Vibration Modes and Characteristic Consideration Using Its Equivalent Circuit Expression

概要

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This paper deals with a simplified equivalent circuit of an ultrasonic motor and its application to the estimation of motor characteristics. Investigation of this equivalent circuit is conducted from the viewpoint of systematization of research on ultrasonic motors. The equivalent circuit must follow the principle of motor operation and must be expressed simply. We have considered the characteristics of an ultrasonic motor using its equivalent circuit expression. We propose simplified equivalent circuits of a rod-type ultrasonic motor using the two degenerate second flexural vibration modes; moreover, we show that the maximum torque, the suitable load, and power transmission can be easily estimated. As a result, we found that the estimated maximum torque was sufficiently close to the measured one and that the power transmission could be estimated by correction of the measuredvalue of internal resistance.
社団法人応用物理学会の論文
1995-09-30