MACROSCOPIC SMA WIRE BUNDLE ACTUATOR/SENSOR SYSTEM: DESIGN, MEASUREMENT, CONTROL APPROACH
نویسندگان
چکیده
منابع مشابه
Macroscopic Sma Wire Bundle Actuator / Sensor System : Design , Measurement , Control Approach
Prestrainend shape memory alloys (SMA) change their length when heated above their transformation temperature. Based on this property this paper presents the design of macroscopic SMA actuators scalable in force and length that keeps up a short cool down time to guarantee a high frequency of contraction/stress cycles and the possibility of arranging the fixings in any direction. A new model of ...
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This research studied the optimal design of Shape Memory Alloy (SMA) muscle wire bundle actuators. Current literature describes the use of multiple muscle wires placed in parallel to increase the lifting capabilities of an SMA actuator, which however, is limited to wires of like-diameter. A constrained optimization problem was formulated, with constraints on the maximum number of wires, voltage...
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In this paper, the design and control of a novel shape memory alloy (SMA) actuator that possesses impressive payload lifting capabilities are presented. The actuator consists of 48 nickel-titanium SMA wires mechanically bundled in parallel forming one powerful artificial muscle. This new linear actuator can apply up to 100 lbf (445 N), which is approximately 300 times its weight, over a maximum...
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In the present work an experimental-numerical approach is used to study the thermo-mechanical behaviour of NiTi wire for defining what parameters are the most important in actuator designing. Tests were carried out heating, by an electrical current, a wire having a diameter of 150 m, under constant stresses of 200 MPa. Data concerning strain, applied current and voltage are acquired during the ...
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ژورنال
عنوان ژورنال: IFAC Proceedings Volumes
سال: 2006
ISSN: 1474-6670
DOI: 10.3182/20060912-3-de-2911.00181