基于形状记忆效应的分布温度阈值执行器的设计  

Designing Distributed Threshold Temperature Actuator Based on Shape Memory Effect

作　　者：魏康林[1] 高小新[1] 张弘 邹建[3] 

机构地区：[1]三峡大学理学院,湖北宜昌443002 [2]振东光电有限公司,浙江宁波315400 [3]重庆大学光电工程学院,重庆400044

出　　处：《电子器件》2007年第4期1269-1274,共6页Chinese Journal of Electron Devices

摘　　要：设计能有效运作的温度阈值执行器是提高准分布光纤温度报警系统稳定性和可靠性的关键技术,为此分析了基于Ni-Ti-Cu合金良好的双程形状记忆效应设计执行器的原理与方法,通过实验测试从样品中选择了回复力大机械性能优良的Ni-Ti-Cu合金,利用该合金实现了执行器的机械设计.通过在线调试,执行器能够高效运作,报警系统能稳定可靠地运行,并且具有接近1.5 m的空间分辨率和低于16 s的响应时间等优良的性能参数.Designing the threshold temperature actuator,which is able to operate efficiently,is key technology that can improve the stability and reliability of the quasi-distributed fiber optical temperature annunciator system. Therefor,the principle and method of devising the actuator based on Ni-Ti-Cu alloy＇s two way shape memory effect has been analyzed. By experiment research such alloy as has much bigger force of restitution and good mechanical property has been chosen from the samples. And so,the actuator＇s mechanic design has been implemented by making use of that Ni-Ti-Cu alloy. After debugging on-line the actuator can work with high efficiency,and in the meantime the annunciator system can not only run steadily, but also has acquired such excellent performance parameter as spatial resolution approaching 1. 5 m and response time under 16 s.

关 键 词：温度阈值执行器 形状记忆效应 测试 回复力 

分 类 号：TP215[自动化与计算机技术—检测技术与自动化装置]