Analysis of air bearing torsion pendulum moment of inertia measurements including nonlinear oscillation and damping

نویسندگان

چکیده

For precise measurement of the moment inertia (MOI) asymmetric objects, using an air bearing torsional pendulum, nonlinearity torsion bar and damping effect caused by interaction between sample need to be included in analysis. The instantaneous undamped natural frequency coefficient motion are obtained from Hilbert transform angular displacement signal used for data fitting calculate MOI. Measurements algorithm verification were made a special with large windvanes increase effect. nonlinear analysis MOI experimental results indicated relative error less than 0.1% compared 0.3% classical linear data.

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ژورنال

عنوان ژورنال: Review of Scientific Instruments

سال: 2023

ISSN: ['1089-7623', '1527-2400', '0034-6748']

DOI: https://doi.org/10.1063/5.0108741