摘要
为了适应微小卫星百叶窗热控系统的工作要求,提出了用于微热控百叶窗的半导体热电控制形状记忆合金新型驱动元件的构想。用实验和数值软件A nsys对驱动元件温度、变形等特性进行了研究,模拟结果与实验结果基本吻合。结果表明,与直接电加热的控制方式相比,该新型驱动元件的变形量是其2.4倍,动作频率则是其6倍。给定的驱动元件工作性能取决于形状记忆合金的相变温度和输入电流之间的匹配。
A new thermoelectric shape memory alloy （SMA） actuator of micro thermal louvers comprised of thermoelectric elements and a shape memory alloy was developed as a thermal control system for micro-satellites. Experimental and numerical analyses were used to assess the temperature changes and movement of the actuator. The simulation results agree well with the test results. The actuator displacements are 2.4 times that of an actuator controlled by direct electrical heating with the movement frequency actuator 6 times faster. The actuator performance depends on the phase transformation temperature matching the input current.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第8期1478-1480,1484,共4页
Journal of Tsinghua University(Science and Technology)
基金
航天创新基金项目(J03-2005003)
关键词
记忆合金片
热电控制
驱动元件
热控百叶窗
shape memory alloy
thermoelectric control
actuator
thermal louvers
