Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"embedded actuators"”.
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Estimation and control of flexible space structures for autonomous on-orbit assembly
… Since these elements are often flexible and lack embedded actuators and sensors, the assembly robot must use its own actuators and onboard measurements to suppress vibrations during transportation maneuvers. This thesis will examine the dynamic modeling of a free-flying robot attached to a …
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Enhanced induced strain actuator performance through discrete attachment to structural elements
… strain actuator to the structure. With bonded or embedded actuators used for inducing flexure, the developed in-plane force contributes indirectly through a locally-generated moment. Control authority in this configuration is thus limited by actuator offset distance. The focus of this research was …
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Improvement In Acoustic Liner Attenuation In Turbofan Engines By Means Of Plasma Synthetic Jet Actuator
… efficient attenuators of engine noise. Plasma actuators have been used as flow control devices in other settings and will now be studied as an enhancement for acoustic liners. A plasma actuator can excite oscillatory flow or a single direction (bias flow). Both flow types are studied as …
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Integrated modeling and design of lightweight, active mirrors for launch survival and on-orbit performance
… performance, which tend to have many ribs and actuators. Additionally, a dynamic state-space model of the launch environment is developed. The designs that are most likely to survive launch have few ribs and actuators, directly in conflict with the best on-orbit designs. Launch load alleviation …
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Prediction & Active Control of Multi-Rotor Noise
… signal produced by the on-blade distribution of embedded actuators on the two rotors. For the specific geometry considered here, this produced about 9 dB reduction in the in-plane thickness noise during forward flight of the two rotors. We further developed a technology that replaces using a …
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RoSE Enhancement for In Vitro Simulations of Human Swallowing
… are replicated in RoSE. Still, it lacks embedded sensors mimicking the mechanoreceptors in an esophageal lumen. Exploring the opportunities in improving the RoSE as an analytical tool for in-vitro swallowing studies has been the focus of this research. The components of this research were …
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Design, fabrication, and control of soft robots with fluidic elastomer actuators
… The robot employs a compliant body with embedded actuators emulating the slender anatomical form of a fish. In addition, the robot has a novel fluidic actuation system that drives body motion and has all the subsystems of a traditional robot on-board: power, actuation, processing, and …
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Thermomechanical Response of Shape Memory Alloy Hybrid Composites
This study examines the use of embedded shape memory alloy (SMA)actuators for adaptive control of the themomechanical response of composite structures. Control of static and dynamic responses are demonstrated including thermal buckling, thermal post-buckling, vibration, sonic fatigue, and acoustic …