【摘要】 为了测量微振动环境条件下反射镜的微小转角,根据结构随机振动加速度的频域数据与转角均方根响应的数学关系,提出了一种经济且简单易行的间接测量结构微转角的方法。并且以一个大型反射镜架为例,通过实验分析得到了其在大厅空调运行与关闭微振动环境下镜片的相对转角响应。实验表明,此方法操作简单、测量精度高,具有广阔的应用前景。更多还原

【Abstract】 In order to test the micro-rotation of reflectors subjected to micro-vibration,an economical,simple,convenient and indirect method has been introduced to measure the micro-rotation according to the mathematic relation between the frequency domain data of the vibration acceleration and the mean square root response of micro-rotations.As an example,the testing on a great reflector support has been done,and the relative rotation response of the reflector subject to micro-vibration has been obtained through opening and closing the air-conditioner in hall.The testing results show that this simple method is with high measurement accuracy and with wide application prospect.更多还原