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一、设备周围的机械环境无线电电子设备在运输和工作中,可能受到各种机械力的作用.这些机械力按其作用的性质可分三种.(一)周期性振动这是指设备在外界作用力作用下产生一定节拍的位移现象.产生振动的主要来源是运载工具发动机的机械振动.振动危害性很大,特别是共振时破坏性更大.因此设计时应考虑避免共振.表5-1为各种运载工具振动参数的大致范围.表5-1 运载工具振动参数大致范围
First, the mechanical environment around the equipment Radio and electronic equipment in transport and work, may be subject to a variety of mechanical force These mechanical forces according to the nature of their role can be divided into three types: (a) periodic vibration This refers to equipment in the outside world The force generated by a certain beat displacement phenomenon.The main source of vibration is generated by the mechanical vibration of the vehicle engine.Vibrational hazards, especially in the destructive resonance is more.So the design should be considered to avoid resonance.Table 5- 1 for a variety of vehicle vibration parameters of the approximate range of Table 5-1 vehicle vibration parameters approximate range