圧電アクチュエータを用いた一方向ブレーキ機構

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書誌事項

タイトル別名
  • One-way Brake Mechanism Using Piezoelectric Actuator
  • アツデン アクチュエータ オ モチイタ 1ホウコウ ブレーキ キコウ

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抄録

This paper deals with a one-way brake to generate a large braking force using a piezoelectric actuator. In the proposed brake unit, a break plate is pressed on a slider with a small inclination angle perpendicular to the slider. In the case of thrusting the slider, a large braking force in proportion to the thrust is generated between the slider and the brake plate. The braking force does not depend on the generative force of the piezoelectric actuator, which releases the brake plate from the slider. It does not consume the energy to keep the slider position because the piezoelectric actuator is a capacitive load. A prototype was designed based on the preliminary experiments of the inclination angle of the brake plate. The measured inclination angle for braking the slider coincided with the theoretical one by statics and the finite element analysis. The braking force control was demonstrated. After a dither was added to the control signal of the piezoelectric actuator, the braking force became stable.

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