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PRECISION MASS PROPERTY MEASUREMENTS USING A FIVE-WIRE TORSION PENDULUM

机译:使用五线扭摆的精密质量测量

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The five-wire pendulum is capable of determining moment of inertia properties to better than a part in 10~4. The prototype five-wire measurement apparatus shows the prospect of further improving on current state of the art precision. The apparatus is also capable of mass center offset measurements to better than ~0.8 μm. Further work is necessary to completely characterize the error associated with the mass center measurements. For mass center measurements, an apparatus with a similar five-wire design shows the prospect of achieving state of the art. For the mo- TABLE 2. Comparison of measurement results for the fixed mass center offset sphere. Measurement sources: (a) Design value, (b) Estimate from geometry, (c) Velocity modulation, (measured), (d) Torsion pendulum, (Single Plane, measured, two-configuration estimate). (e) Torsion pendulum, (Single Plane, measured).
机译:五线摆能够确定惯性矩特性好于10〜4的一部分。原型五线测量设备显示了进一步提高当前技术水平精度的前景。该设备还能够进行质心偏移测量,精度优于〜0.8μm。为了完全表征与质心测量相关的误差,需要做进一步的工作。对于质心测量,具有类似五线设计的设备显示出实现最新技术的前景。对于表2.比较固定质量中心偏心球的测量结果。测量源:(a)设计值,(b)根据几何形状的估计,(c)速度调制,(测量的),(d)扭摆,(单平面,测量的,两种配置的估计)。 (e)扭转摆(单平面,已测量)。

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