The strain_stress variation measuring experiments of steel_cable_stayed bridge model under loading condition were done by using fiber optic strain sensing instrument.
采用光纤应变测量仪对桥梁钢索的应力应变在载荷情况下的变化进行了实验研究。
The automatic test has been realized by adopting the proportional throttling valve for loading and by use of the CAT technology based on the virtual instrument.
系统采用比例节流阀加载方法以及基于虚拟仪器的CAT技术，实现了测试过程的自动化。
Simple and reliable control is conducted by PLC in lower level, and by adopting virtual instrument in upper level for complex loading control.
下位机采用PLC进行简单可靠控制，上位机采用虚拟仪器进行复杂的加载控制。
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