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基于LabVIEW平台的形状记忆合金温度循环加载控制装置研究
Research on temperature cycle loading control device of shape memory alloy based on LabVIEW platform
投稿时间: 2017-06-24  最后修改时间: 2017-12-02
DOI:
中文关键词:  形状记忆合金,温度控制,PID控制方法,热-力耦合,循环加载
英文关键词:Shape memory alloy, Temperature control, PID control method, Thermo-mechanical coupling, Cyclic loading
基金项目:
作者单位E-mail
康国政 西南交通大学力学与工程学院 guozhengkang@126.com 
赵天行 西南交通大学力学与工程学院  
李建 西南交通大学力学与工程学院  
阚前华 西南交通大学力学与工程学院  
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中文摘要:
      本文根据NiTi形状记忆合金热-力耦合循环变形实验的要求,针对传统加热方法变温速度慢、温度变化非线性、加热不均匀,且无法与其他装置配合使用等缺点,提出了一种新型形状记忆合金温度循环加载控制装置。该装置基于电流加热方法,使用测温仪表进行测温,采用直流电源与降温组件进行变温,同时利用PID等控制方法进行控制,达到精准控温的效果。通过测试及实验,可以看出,该装置具有良好的控温性能、快速的变温速度、自动的程序控制等优点。本装置的成功开发为形状记忆合金热-力耦合循环变形和疲劳失效行为的实验研究提供了坚实的设备基础
英文摘要:
      According to the requirement in the thermo-mechanical coupling cyclic deformation experiment of shape memory alloy, a new control device for the temperature cyclic loading was proposed to overcome the shortcomings of traditional heating methods, such as a slow temperature changing rate, nonlinear temperature variation, uneven heating and not being able to be conjuncted with other devices. The developed device is based on the current heating method and uses the traditional temperature measuring instrument. A DC power supply and cooling components were used to heating and cooling temperature. To achieve the precise temperature control, the current output power was controlled by the PID control method. It can be seen from the tests that the device has the good temperature control performance, fast temperature changing rate and automatic control program. The successful development of the device provides a substantial foundation for the study of thermo-mechanical coupled cyclic deformation and fatigue of shape memory alloys.
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