文章基本信息

标题：Natural Heat-Sinking Control Method for High-Speed Actuation of the SMA
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作者：Chee Siong Loh ; Hiroshi Yokoi ; Tamio Arai 等
期刊名称：International Journal of Advanced Robotic Systems
印刷版ISSN：1729-8806
电子版ISSN：1729-8814
出版年度：2006
卷号：3
期号：4
DOI：10.5772/5725
出版社：SAGE Publications
摘要：This paper describes two methodologies for increasing the actuation speed of the shape memory alloy (SMA) actuator in ambient environment. The first method involves the implementation of a simple, light-weight heat sink, which consists only of a combination of an outer metal tube with the silicone grease, but able to cool the heated alloy effectively. The second method describes a high current pulse actuation that actuates the alloy fastly using pulses in the milliseconds order. We hypothesize that a fast actuation of the SMA results in small increase in temperature, due to energy transformation from heat energy to the kinetic energy in the SMA. This new heating method revolutionizes the actuation of the alloy for a significantly faster response.
关键词：Shape memory alloy (SMA) ; simple light-weight heat sink ; high current pulse actuation