Development of an MRE adaptive tuned vibration absorber with self-sensing capability

Abstract

In this paper, self-sensing technology was introduced into an adaptive tuned vibration absorber, incorporating a laminated magnetorheological elastomer (MRE) structure, a hybrid magnetic system and a self-sensing component. The adoption of the laminated MRE structure and the hybrid magnetic system enables the absorber to have higher lateral flexibility and a wider effective frequency range. The integration of the selfsensing capability allows the absorber to operate without sensors and, at the same time, greatly reduces costs, required space and maintenance. A series of experiments were conducted to measure the frequency shift property, to verify the self-sensing capability and to evaluate its effectiveness on vibration reduction. The experimental results show that the natural frequency of the proposed absorber can be changed to 4.8 Hz at -3 A and 11.3 Hz at 3 A from 8.5 Hz at 0 A, the frequency of the self-sensed voltage equals the excitation frequency and, more importantly, the vibration control effectiveness of the self-sensing MRE absorber is experimentally verified and it is more effective on vibration reduction than a passive absorber. AbstractIn this paper, the self-sensing technology was introduced to an adaptive tuned vibration absorber which incorporates the laminated MRE structure, the hybrid magnetic system, and the self-sensing component. The adoption of the laminated MRE structure and the hybrid magnetic system enables the absorber to have a higher lateral flexibility and wider effective frequency range. The integration of the self-sensing capability makes the absorber leave out the usage of sensors and at the same time is a big relief on the cost, space, and maintenance.A series of experiments were conducted to measure the frequency-shift property, to verify the self-sensing capability, and to evaluate its effectiveness on vibration reduction. The experimental results shows that the natural frequency of the proposed absorber can be changed to 4.8Hz at -3A and 11.3Hz at 3A from 8.5Hz at 0A, that the frequency of the selfsensed voltage equals the excitation frequency, and that, more importantly, the vibration control effectiveness of the self-sensing MRE absorber is experimentally verified and it is more effective on vibration reduction than the passive absorber.

Sensing and Self-Sensing Actuation Methods for Ionic Polymer–Metal Composite (IPMC): A Review

“…Advantages of SSA methods include eliminating additional sensor weight, volume, integration and cost challenges [163,164,165,166,167]. SSA methods have been reported for a multitude of smart materials, such as piezoelectric cantilevers [168], -stacks [169] and -fibers [164], dielectric elastomers (DEA) [170], magnetorheological elastomers (MRE) [171], and carbon nanofibers (CNF) [172]. SSA methods for a wide scope of ionic electromechanically active polymers were reviewed in 2015 by Kruusamae et al [163].…”

Comparative Investigation of Phenomenological Modeling for Hysteresis Responses of Magnetorheological Elastomer Devices

“…Additionally, MRE also expresses variable damping [9,10,11]. These unique features indicate that MRE can be adopted for designing controllable devices such as adaptively tuned vibration absorbers [12,13,14,15,16,17] and isolators [18,19,20,21,22,23,24], stiffness tunable mounts and suspensions [25], and variable impedance surfaces [26].…”

Analysis of Electrical Resistance and Impedance Change of Magnetorheological Gels with DC and AC Voltage for Magnetometer Application

“…Using this phenomenon, the external disturbance frequency was estimated from the MRE resistance without using an external sensor. Sun et al [17] designed another TVA with a MRE sensor. A laminated steel MRE structure is designed and the frequency of the vibration is estimated from the detected induced voltage in the coils that are wound around the MRE sample.…”