摘要
本文叙述了一般三线摆的结构原理,并根据动量矩原理推导了其微角及大角摆动的周期近似表达式。同时还说明了一般三线摆的重要性质及优点。利用此摆可测量不规则小型物体绕指定轴的惯矩,而且不需要任何专用夹具。当L_(min)>20R_(max)及Φ_o<40°时,测量精度优于5％。
This paper described the constitution and principle of a trilinear torsion pendulum in its general (namely unsymmetrical) form. Approximate expressions of the oscillating period were derived from the theory of moments of momentum, in small and large angle oscillation for the general trilinear torsion pendulum. Some important oscillating Properties and advantages for the general trilinear torsion Pendulum were presented in the meantime. The moment of inertia of the irregular small-sized object can be measured reliably by using this Pendulum without any special fixtures. When Lmin>20max and φ0<40°, the accuracy of measurement with such means can be better than 5 %.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
1990年第4期38-47,共10页
Journal of Astronautics
关键词
三线摆
振动
惯矩测量
摆动周期
Tril near torsion pendulum, Torgue measurement, Oscillating period
