On-line continuous measurement of the operating deflection shape of power transmission belts through electrostatic sensing

Abstract

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Online Continuous Measurement of the Operating Deflection Shape of Power Transmission Belts Through Electrostatic Charge Sensing

“…It is also noticeable that the signals share almost the same relative magnitudes of the spectral peaks. In comparison with the velocity response measured using electrostatic sensors with transresistance amplifiers [15], there are fewer spectral peaks at higher frequencies and the fundamental vibration mode has the largest magnitude. Note that the small spectral peaks at 50 Hz in Fig.…”

“…In previous studies [12][13][14][15], it was found that a dielectric belt running on earthed metal rollers carries electrostatic charge due to contact and frictional electrification. Information about the motion of the belt can be derived using electrostatic sensors placed adjacent to the belt.…”

“…Specifically, the transverse velocity of the belt can be reflected by the electrostatic signal obtained using a transresistance amplifier (i.e., a current-to-voltage converter) [14,15]. The electrostatic sensor is simple, non-contact, inexpensive and suitable for hostile environments, thus representing an appealing solution to the belt vibration measurement problem in industry.…”

“…The electrostatic sensor is simple, non-contact, inexpensive and suitable for hostile environments, thus representing an appealing solution to the belt vibration measurement problem in industry. The basic concept of belt ODS measurement using an electrostatic sensor array along with preliminary experimental results was first reported in 2016 at the IEEE International Instrumentation and Measurement Technology Conference [15]. This paper presents in detail the fundamental principle, finite element modelling, practical design, implementation and experimental assessment of the measurement system.…”

“…This paper presents in detail the fundamental principle, finite element modelling, practical design, implementation and experimental assessment of the measurement system. In particular, the signal from the electrode is conditioned by a charge amplifier instead of the transresistance amplifier used in [15], which permits the characterization of vibration displacement and the construction of the belt ODS from displacement responses.…”