| 温变环境中测试信号传输的仿真及试验 |
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| 引用本文： | 门秀花,李舜酩,杨东.温变环境中测试信号传输的仿真及试验[J].航空动力学报,2011,26(7):1543-1550. |
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| 作者姓名： | 门秀花 李舜酩 杨东 |
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| 作者单位： | 1.济南大学 机械工程学院, 济南 25002 |
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| 基金项目： | 济南大学校博士基金(XBS1003) |
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| 摘 要： | 信号传输理论应用于电路网络中,由基尔霍夫定律推导了离散的温度-时间信号传输模型.给出了一种基于电压和电流的迭代算法,分别实现了导线升温、降温过程的信号传输仿真分析.研究表明:测试信号幅值随温度升高而逐渐衰减,在300℃时,幅值衰减了10%左右,而在升、降温并存环境中幅值衰减更加明显.在此基础上,设计了温变环境下的振动测试试验,所得结果与仿真分析结果一致.该研究为提高振动测试信号的精度提供了一种新方法.
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| 关 键 词： | 振动测试 信号传输 温变环境 渐变温模型 信号幅值 |
| 收稿时间： | 6/3/2010 12:00:00 AM |
| 修稿时间： | 2010/12/12 0:00:00 |
Simulation and experimental investigation of test signal transmission on temperature changing environment |
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| MEN Xiu-hu,LI Shun-ming and YANG Dong.Simulation and experimental investigation of test signal transmission on temperature changing environment[J].Journal of Aerospace Power,2011,26(7):1543-1550. |
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| Authors: | MEN Xiu-hu LI Shun-ming and YANG Dong |
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| Institution: | 1.School of Mechanical Engineering,University of Jinan,Jinan 250022.College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China |
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| Abstract: | The signal transmission theory was applied to circuit network to obtain discrete temperature-time signal transmission model derived by Kirchhoff's law.And then,an iterative algorithm based on voltage and current was proposed,realizing the signal transmission with different temperature change processes.It shows that the amplitude of output signal gradually attenuates with the rise of conductor temperature,by 10% at 300℃.And the amplitude attenuation is more evident due to the coexistence of conductor temperature rise and drop.The corresponding experiment has been conducted,and the results can meet that of proposed model.It provides a new method for improving the accuracy of vibration test signal. |
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| Keywords: | vibration test signal transmission temperature changing environment temperature gradient model signal amplitude |
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