Introducing a Novel Method for Measurement of Stationary and Dynamic Torsion in Shafts - With Application to Monitoring of Torsional Vibration
Author(s):
Abstract:
Strain gage mounted on the surface of the shafts with specified directions are one of the common methods for measurement of the torsion in shafts. The most critical problem in utilization of this method, particularly in the online monitoring of torsional vibration and instantaneous torque in rotary systems, is due to its signal transfer process. In this paper, a simple, practical and feasible method is introduced based on the usage of an ::union::ized fluid medium with adequate electrical conductivity, encapsulated in a cylindrical connector aligned along the shaft, with a rotating chamber (rotor part) and a stationary one (stator part). In this method, there is no need for installation of the power supply on the shaft and both of the supply voltage and the generated electrical signals are transferred via the ::union::ized fluid. Simplicity in design and high signal to noise ratio, may candidate this method for torsional vibration measurement. The efficiency of the measurement system is examined on a test setup, for static and dynamic (transient) torsions. Moreover, the applicability of the device is observed on a rotating shaft.
Keywords:
Language:
Persian
Published:
Journal of Marine Engineering, Volume:12 Issue: 23, 2016
Pages:
105 to 114
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