A torsional pendulum braking method and torsional pendulum device for measuring moment of inertia

By applying a fixed frictional force to the measuring platform and gradually reducing the pressure inside the brake cylinder, the problem of traditional braking methods failing to return to their original position is solved, enabling the measuring platform to stop quickly and return in a timely manner, thus improving measurement efficiency and safety.

CN116202689BActive Publication Date: 2026-05-26BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH
Filing Date
2023-01-13
Publication Date
2026-05-26

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Abstract

This invention discloses a torsional pendulum braking method and device for measuring rotational inertia, belonging to the field of rotational inertia measurement technology. The braking method includes step one: applying a fixed braking friction force to the measuring platform in a torsional state via a friction element to stop the platform from oscillating; step two: continuously reducing the braking friction force, causing the amplitude of the measuring platform to gradually decrease until the braking friction force is zero, at which point the measuring platform stops oscillating. This method is simple and convenient, enabling the measuring platform to return to its original position promptly.
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