| 摘要 |
A resonant rotationally oscillating mechanical system has masses supported by a resilient structure held at both ends on a stationary base to define a natural resonance frequency of intended rotational motion about an axis relative to the base. The resilient structure is asymmetrical along the axis. The masses are subject to additional motion relative to the base in directions different from the direction of intended motion. For a selected mode of motion, the masses and the asymmetrical resilient structure are mutually configured, in accordance with equations of motion, to substantially preclude angular motion of one of the masses relative to the base about an axis other than the axis of the intended rotational motion. In another aspect, the resilient structure has one end attached to the base by a coupler that permits that end to move relative to the base, but only at frequencies different from the natural resonance frequency of motion.
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