The thermal distortion test of 5x8 sub - array panel was done in high temperature and normal pressure environment . the methodology , procedure and results of thermal distortion test are explained in detail . the test shows the differences between measuring results and fea analyzing results are quite limited 介绍浙江大学博士学位论文空间4 10米可展开天线的动力耦合分析及实验技术研究韦娟芳了常温高温下的5x8子阵板的热变形试验，包括试验方法、试验步骤以及数据采集设备。
Timely monitor of their stress in each working conditions can ensure the safe of support and main arch circle with full - automatic data acquisition system . the results of dynamic - load and dead - load test of the bridge indicate that the main arch has enough strength and rigidity and reachs design requirements 使用全自动数据采集设备和处理系统，对每一工况下的支架、拱圈应力进行适时监控，确保了施工过程中支架和主拱圈的安全。成桥静动载试验表明许沟大桥主拱结构具有足够的强度和刚度，达到了设计要求。
The system is compatible with the various different types a / d converters , carry out the functions of the vibration signal sampling , the saving of data file , the timely wave showing , the configuration table edit , the former data return and data analysis etc . the functions of signal analysis include the time field statistics analysis , the time field mutual analyzing , the frequency spectrum analyzing , the relevant analysis , the transmission function analysis , the demodulating analysis , and the short fourier transformation of the time and frequency field etc . experiments verify that the system carry out stably and credibility , various functions is achieved , has precise analyzing results , high calculating speed and high precision , the expected targets have been reached 该系统可以兼容多种不同型号的数据采集设备,实现了振动信号的采集、数据文件的存储、波形的实时显示、组态表编辑、历史数据回放与数据分析等功能。系统的信号分析功能包括时域统计分析、时域相关分析、频谱分析、相干分析、传递函数分析、解调分析以及时频分析中的短时傅立叶变换等。经试验验证表明,系统运行稳定可靠,各项功能工作正常,数据分析结果准确、运算速度快、精度高,达到了预期设计目的。
