Open-Loop Control Design of Shape Memory Alloys and Polymers through Tapping Motion

Oguntosin, V. (2020) Open-Loop Control Design of Shape Memory Alloys and Polymers through Tapping Motion. Proceedings, 64 (3).

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Abstract

Shape memory alloys and polymers are a class of smart materials that remember a pretrained shape or form when exposed to an appropriate temperature. In this work, shape memory alloys consisting of wires, 1-way springs, and 2-way springs are described; an open-loop control of shape memory alloys and polymers is also implemented. Since the amount of electric current that flows through a wire is directly proportional to temperature, control of the electric circuit is used for open-loop temperature control. The designed smart control is applied to rotate a lever mechanism through the conversion of the linear motion of the shape memory alloy (SMA) into the rotational motion of the lever through the tapping of a piezoelectric transducer to deliver the openloop control. When the piezo transducer is deformed by mechanical stress via tapping, striking, or any other mechanical stimulus, it produces an electrical signal, which when sent to the microelectronic circuit activates the SMA. The implemented system can be applied in robotic systems and autonomous applications.

Item Type:	Article
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science
Depositing User:	Patricia Nwokealisi
Date Deposited:	16 Dec 2024 13:15
Last Modified:	16 Dec 2024 13:15
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/18655

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