Topic
Active vibration control
About: Active vibration control is a research topic. Over the lifetime, 6770 publications have been published within this topic receiving 76599 citations. The topic is also known as: active vibration damping.
Papers published on a yearly basis
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TL;DR: High accuracy, high speed, and high power microrobot, swine oocyte manipulations are presented in a microfluidic chip and the output force is increased twice as much by the ultrasonic vibration.
Abstract: This paper presents an innovative driving method for an on-chip robot actuated by permanent magnets in a microfluidic chip. A piezoelectric ceramic is applied to induce ultrasonic vibration to the microfluidic chip and the high-frequency vibration reduces the effective friction on the MMT significantly. As a result, we achieved 1.1 micrometre positioning accuracy of the microrobot, which is 100 times higher accuracy than without vibration. The response speed is also improved and the microrobot can be actuated with a speed of 5.5 mm s−1 in 3 degrees of freedom. The novelty of the ultrasonic vibration appears in the output force as well. Contrary to the reduction of friction on the microrobot, the output force increased twice as much by the ultrasonic vibration. Using this high accuracy, high speed, and high power microrobot, swine oocyte manipulations are presented in a microfluidic chip.
165 citations
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TL;DR: In this paper, an adaptive-passive vibration absorber using shape memory alloys (SMA) was constructed and tested using spring elements composed of three pairs of SMA wires and one pair of steel wires.
160 citations
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159 citations
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TL;DR: In this paper, the authors investigated the vibration suppression capabilities of magnetorheological (MR) materials in adaptive structures by varying the externally applied magnetic field level over the MR layer, the stiffness and damping properties of the adaptive beam can be varied.
Abstract: This paper discusses the investigation of vibration suppression capabilities of magnetorheological (MR) materials in adaptive structures. Homogeneous three-layered adaptive beams with MR materials sandwiched between two elastic layers were considered. By varying the externally applied magnetic field level over the MR layer, the stiffness and damping properties of the adaptive beam can be varied. These variations in the damping and stiffness properties can be used to tune the vibration characteristics of the adaptive beams such as natural frequencies, vibration amplitudes, mode shapes and loss factors. In this study, theoretical investigation of the MR adaptive beams vibration behavior based on the energy approach is accomplished. Experiments were performed to observe the theoretically predicted vibration responses in real time. From both studies, vibration suppression capabilities of MR adaptive beams were observed in the forms of shifts in natural frequency values, variations in loss factors, and vibration amplitudes.
159 citations
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TL;DR: In this paper, the authors present a theory and experimentation for distributed sensors and actuators for smart-structures, including active control of Nitinol-Reinforced Composite Beams and active piezoelectric shell.
Abstract: Editor's Preface. Introduction to Smart Structures G.L. Anderson, A. Crowson, J. Chandra. Active Piezoelectric Shell Continua H.S. Tzou. Piezoelectric Laminate: Theory and Experimentations for Distributed Sensors and Actuators C.-K. Lee. Active Control of Nitinol-Reinforced Composite Beams A. Baz, S. Poh, J. Ro, M. Mutua, J. Gilheany. Electrorheological Fluids -- Materials and Applications T.G. Duclos, J.D. Carlson, M.J. Chrzan, J.P. Coulter. Piezoelectric Wafers for Reducing the Structure Vibrations P. Destuynder, I. Legrain, L. Castel, N. Richard. Intelligent Sensor Systems for Underwater Acoustic Applications T.R. Howarth, V.K. Varadan, V.V. Varadan. Distributed Transducer Design for Intelligent Structural Components J.E. Hubbard, Jr, S.E. Burke. Optimal Actuator Placement in Adaptive Precision Trusses S.K. Das, S. Utku, G.S. Chen, B.K. Wada. Active Vibration Control of Axially Moving Continua B. Yang, C.D. Mote, Jr. Model Refinement and Damage Location for Intelligent Structures D.C. Zimmerman, S.W. Smith. Subject Index.
154 citations