微小电流间接热驱动Ni-Ti形状记忆合金片的研究  

Study of Ni-Ti Shape Memory Alloy Thermally Driven Indirectly by Micro Current

作　　者：卢莉蓉[1] 王利[2] 牛晓东[3] 石春花[1] 

机构地区：[1]长治医学院生物医学工程系,山西长治046000 [2]中北大学机电工程学院,山西太原030051 [3]长治医学院基础医学院,山西长治046000

出　　处：《中北大学学报（自然科学版）》2016年第2期187-192,197,共7页Journal of North University of China(Natural Science Edition)

基　　金：山西省高校科技研究开发项目基金(20091025)

摘　　要：形状记忆合金片状驱动器具有电阻小,电流热驱动有效功率低,能源浪费大,驱动时间长等缺点,尤其是微小电流热驱动时,驱动器甚至不能动作.为了克服这些缺点,通过传热学理论分析、相关实验验证和计算机ANSYS仿真,提出了一种利用锂电池构造恒流源来提供毫安级微电流,驱动加热丝间接导热,快速驱动形状记忆合金片的方法.结果表明,利用毫安级小电流可以间接使得片状驱动器在6s左右动作,实现了微小电流控制驱动形状记忆合金片状驱动器.The shape memory alloy tablet driver has the shortcomings of small resistance,effective power of current driving low,energy waste big,driving time long and little current driving difficulty,even impossible.In order to overcome those shortcomings,by the relevant experience and heat transfer theory analysis and ANSYS simulation,we propose a method of little current driving SMA indirectly and rapidly.The mill amperes current is provided by constant current source using of lithium battery constructing.The result illustrate that mill amperes current can drive the SMA tablet driver about 6minutes indirectly,so the little current control SMA tablet driver is realized.

关 键 词：微小电流 热驱动 Ni-Ti形状记忆合金片 

分 类 号：TG139.6[一般工业技术—材料科学与工程]