用于整星隔振效果评价的隔振器影响系数指标研究

对整星隔振系统的隔振效果评价指标（振动传递率、隔振器振级落差、功率流等）进行分析，通过实例证明采用隔振器底端到顶端的传递率来评价隔振效果是不充分的，而采用隔振器振级落差、功率流等指标也在实际应用中存在各自的局限性。在分析隔振器影响系数的基础上，提出一种改进的隔振器影响系数指标，并采用位移导纳表达改进的隔振器影响系数。以自行设计的新型整星隔振平台为例，采用改进的隔振器影响系数指标进行隔振效果预测，结果表明：改进的隔振器影响系数指标可以更加简单直观地表现出整星隔振平台的隔振性能。

Evaluating indicator of whole-satellite vibration isolation

Assessment over performance of isolation in Whole-Satellite Vibration Isolation system is evaluated on the basis of such sets of indexes as transmission ratio of vibration、vibration level difference and power flow. However, it is inadequate to assess the isolation performance at the presence of sole transmissibility ratio from the bottom of isolator to the corresponding part at the top, while different limitations also exist in vibration level difference and power flow applied to evaluate practical system. A modified version as function of displacement admittance was proposed as a result of analysis of impact ratio of isolator. Then it was introduced to the evaluation of the self-designed newly Whole-Satellite Vibration Isolation platform. The results indicated that the proposed appraisal method had the advantage of featuring the isolation performance intuitive and simple in this system.