为了减少机械设备的振动力传递到底座上去,通常采用弹性支承的办法进行隔振。在单自由度系统,隔振容易实现,但在实际情况下,弹性支承体的运动,都是多自由度,而且运动的位移和转动都是偶合的,因此运动比较复杂。本文藉用广义坐标使偶合系统的计算简单化,使一些问题,可以用简单的计算方法得出位移近似值。在实际装置中,弹性支承的电传动压缩机组,选用减振座时一般做法是选用较大的干扰振动频率与自振频率比值,这样,弹簧就选择比较软。但是在启动的过渡过程时,瞬时最大位移值往往需 In order to reduce the vibration of mechanical equipment transmitted to the base up, usually by way of flexible support for vibration isolation. In a single-degree-of-freedom system, vibration isolation is easy to achieve. However, in practice, the movement of the elastic support is multi-degree of freedom, and the displacement and rotation of the movement are both coupled. Therefore, the movement is relatively complicated. In this paper, the generalized coordinates are used to simplify the calculation of the coupled system, so that some problems can be solved by simple calculation method. In the actual installation, the elastic support of the electric drive compressor unit, the use of vibration damping seat when the general approach is to use a larger interference frequency of vibration frequency and natural frequency ratio, so that the spring on the choice of relatively soft. However, at the start of the transition process, the instantaneous maximum displacement value is often required