Dynamic response-based characterization of ring-based vibratory angular rate sensors |
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Authors: | Samuel F Asokanthan Jihyun Cho |
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Affiliation: | (1) The University of Western Ontario, London, Ontario, Canada |
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Abstract: | Dynamic response behaviour of a rotating ring is investigated in order to better understand the achievable performance improvements
as well as system limitations. For this purpose, the governing equations that represent the transverse as well as the tangential
in-plane motion of a rotating ring are derived via the Hamilton’s principle. These equations are then discretized to represent
a two-degree-of-freedom time-varying gyroscopic system. The asymmetry effects are considered important and are included by
considering mass mismatch in the system mass matrix. In order to predict dynamic behaviour of a ring system subjected to external
excitation and body rotation, time and frequency response analyses are performed. The natural frequency variations due to
the gyroscopic coupling presented in the system are first characterized for varying input angular rates. The effects of system
parameters such as damping and mass mismatch on the sensor sensitivity and operating range are quantified via suitable time
and frequency response analyses. |
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Keywords: | Rotating ring Vibratory angular rate sensor |
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