Non-Contact Vibration Monitoring of Power Transmission Belts Through Electrostatic Sensing

Abstract

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A Smart Electrostatic Sensor for Online Condition Monitoring of Power Transmission Belts

“…In most previous research involving electrostatic sensors, transresistance amplifiers (i.e., current-to-voltage converters) were used for signal conditioning. By measuring the rate of variation in the induced charge (i.e., the induced current), the transverse velocity of the belt vibration was characterized [10,11]. By contrast, charge amplifiers can deliver displacement response, which will be verified through numerical simulation and comparative experiments.…”

“…Therefore, the belt axial speed can be measured by exploiting the similarity and time delay between the signals. Cross-correlation is a common signal processing technique that measures the similarity of two signals as a function of time shift [1,2,3,10,11,14,27,28]. It involves progressively sliding of one signal past the other and summing the cross-multiplication products over the common time interval.…”

“…Recently, preliminary studies have been carried out on speed and vibration measurement of power transmission belts using electrostatic sensors [10,11]. Belt drives are extensively used in many industries to transmit torque between rotating shafts.…”

Performance Evaluation of Mechanical Power Amplifier for Various Belt Materials

“…Gambhire et al [10] designed and developed a mechanical power amplifier, which is structurally much simpler as compared to the prior amplifier. Hu et al [11] developed a displacement amplifier to integrate into an extensometer to improve precision and resolution of the extensometer, whereas the outcomes of Hu et al [12] show that the belt vibrates at well-separated modal frequencies that increase with the axial speed. Shahosseini et al [13] report the design optimization, of a mechanical amplifier to generate power from low amplitude and low-frequency vibrations in the manifestation of hefty static displacements, whereas Mushiri et al [14] designed a power saving conveyor system which involves sizing, selection and cost benefit analysis of its installation result in high starting torque and more operating hours.…”

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

“…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.…”