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介绍载荷识别的基本概念和方法；通过测量一台１１ＺＡ—１５／８型往复式压缩机缸盖的频响函数，以及工作状态下的缸盖振动信号，识别求得缸内气体压力，其结果与压力实测值较好吻合．这一方法的研究成功．为缸内压力的测量开辟了新的途径．为往复压缩机的故障诊断奠定了基础．
The basic concepts and methods of load identification are introduced. By measuring the frequency response function of a 11ZA-15/8 reciprocating compressor cylinder head and the vibration signal of cylinder head under working condition, the gas pressure in the cylinder is obtained and the result is obtained Better agreement with the measured pressure. The research of this method is successful. For the measurement of pressure in the cylinder opened up a new way. For the reciprocating compressor fault diagnosis laid the foundation.