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.
Results
Showing 1 to 8 of 8 for “"Rotary Actuator"”.
-
Shape memory alloy rotary actuator for CubeSat deployable structures
… been achievable only through low SWaP single-use actuators or motor-driven, high SWaP multiple-use actuators. The Folded Lightweight Actuated Positioning System has the potential to provide an ultra-lightweight multiple-use actuator by using a Joule-heated shape memory alloy-based hinge. The hinge …
-
Modeling, Design, Identification, Drive, and Control of a Rotary Actuator with Magnetic Restoration
Rotary actuators have been widely used in the industry. This thesis investigates the design, modeling, identification, drive, and control of an actuator with magnetic restoration. The design considerations are explained, FEM is used in the analysis, and a prototype is built for lab experiments. A …
-
Design and Control of a Cable-Driven Sectorial Rotary Actuator for Open-Loop Force Control
… and testing of a unique high performance rotary actuator for use in a custom haptic force feedback device. This six degree of freedom (DoF) position input and three DoF force output haptic device is specifically designed to recreate force sensations with the goal of improving operator …
-
Design, analysis, and control of a nitinol shape memory alloy rotary actuator for spacecraft deployable structures
… Shape memory alloys have been used to create rotary mechanisms in the past but closed loop control of shape memory alloys in a bending architecture is relatively novel. A rotary shape memory alloy actuator was designed with the use case of precisely pointing solar panels to maximize energy …
-
Position control and vibration suppression of a flexible beam-like structure cantilevered from a rotary actuator within a gravitational field
… A DC servo motor served as the control actuator. Gains were computed for a continuous controller rather than for one having a sampled-data nature. Both simulation and experimental response were good, and were seen to correspond well with computed system-eigenvalues. If gains were chosen …
-
Synthesis and Design of a Bimodal Rotary Series Elastic Actuator
A novel rotary series elastic actuator (RSEA) with a two-mode, or bimodal, elastic element was designed and tested. This device was developed to eliminate the compromise between human safety and robot performance. Rigid actuators can be dangerous to humans within a robot's workspace due to impacts …
-
The design and control of active ankle-foot orthoses
… torque assistance via a bi-directional pneumatic rotary actuator. The system uses a portable pneumatic power source (compressed CO2 bottle) and embedded electronics to control the motion of the foot. Experimental data from two impaired and five healthy subjects were collected to demonstrate design …
-
Creating Human-Like Facial Expressions Utilizing Artificial Muscles and Skin
… deformation vector of facial control points and actuator parameter, skin elasticity and angular position of actuator was derived. The developed analysis method is applicable to any rotary actuator technology utilized for facial expressions and takes into account the skin stiffness. The artificial …