一、前言在工程实际中,多数设备或结构所承受的载荷都带有随机性,这样就不能用确定的函数来描述。尽管从表面上来看似乎是杂乱无章的,但从总体记录来看,它们有一定的规律性。本文通过对我厂设计生产的φ2000×2000锤式破碎机及联邦德国同类型产品的现场测试,阐述了对机械设备进行随机振动的测试方法。并且应用快速傅里叶分析仪(FFT)对所获得的随机振动信号进行了振幅分析、频率 I. INTRODUCTION In engineering practice, most equipment or structures are loaded with randomness so that they can not be described with a definite function. Although superficially seemingly disorganized, they have some regularity in the overall record. In this paper, I designed and manufactured factory φ2000 × 2000 hammer crusher and the Federal Republic of Germany on the same type of field test, described the mechanical equipment for random vibration test method. And the amplitude of the random vibration signal obtained was analyzed by Fast Fourier Transform (FFT). The frequency