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工程中有很多复杂结构，由于边界条件模糊，很难用数值方法进行分析，况且数值分析的可靠性需试验数据进行验证。目前，试验方法由于具有诸多优点而被广泛采用。特别是高速度、高容量微型计算机的发展，为动态信号的量化和处理开辟了广阔的前景。为此，我们对信号的采集与处理?
Due to the ambiguous boundary conditions, it is very difficult to analyze by numerical method. In addition, the reliability of numerical analysis needs to be verified by the test data. At present, test methods are widely used due to their many advantages. Especially the development of high-speed and high-capacity microcomputers has opened up a broad prospect for the quantification and processing of dynamic signals. To this end, we signal acquisition and processing?