Global ETD Search
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Showing 1 to 7 of 7 for “"piezoelectric sensors and actuators"”.
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Structural Health Monitoring Using Multiple Piezoelectric Sensors and Actuators
A piezoelectric impedance-based structural health monitoring technique was developed at the Center for Intelligent Material Systems and Structures. It has been successfully implemented on several complex structures to detect incipient-type damage such as small cracks or loose connections. However, …
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Broadband active structural control using collocated piezoelectric sensors and actuators
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Design and Fabrication of Piezoelectric Sensors and Actuators for Characterization of Soft Materials
… supports the overall goal of creating piezoelectric measurement technology for the analysis and characterization of soft materials that serve as feedstocks (inputs) and products (outputs) of emerging biomanufacturing processes, including cell and additive biomanufacturing processes. The …
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Design of, and initial experiments with, a MIMO plate control testbed
This work discusses the design of, and initial experiments with, a MIMO plate control testbed. This structure will be used as a development and standard comparison site for AVC and ASAC and is an extension of previous SIMO control investigations which used accelerometers and shakers. This portion …
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Vibration Attenuation of Composite Moving Beams using Active Vibration Control Techniques
… vibration control technique that employs the piezoelectric effect. Piezoelectric sensors and actuators are added to the beam to sense and control the vibrational response of the moving beam. The sensors and actuators are made to communicate with each other using negative velocity feedback …
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Active control of sound transmission through plates in a reverberant environment
… Active acoustic control is performed using piezoelectric sensors and actuators bonded to the plate. The control technique uses an adaptive control algorithm. Results are presented for harmonic excitation provided by a speaker in the source chamber at two resonant frequencies of the plate. …
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Assessing Structural Integrity using Mechatronic Impedance Transducers with Applications in Extreme Environments
This research reviews and extends the impedance-based structural health monitoring technique in order to detect and identify structural damage on various complex structures. The basic principle behind this technique is to apply high frequency structural excitations (typically higher than 30 kHz) …