系统自振对绝对重力仪的影响模式分析
Influence Mode Analysis of Self Vibration on Absolute Gravimeter
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摘要: 隔振问题是绝对重力仪研制中的关键技术难题之一。在自主研制“小型mGal级绝对重力仪”过程中发现,除了需要克服地面振动的影响之外,系统自振的影响也不容忽视,最大能达到mGal量级。通过对研制样机实验观测结果的分析,研究了系统自振产生的原因以及对系统偏差与观测内符合精度的影响模式,并给出了改进方案,以消除“系统自振”的影响,提高研制仪器的观测精度。Abstract: Vibration isolation is one of key problems for absolute gravimeter development.We find out that the measurement error caused by self vibration is up to about mGal,which cannot be neglected.We analyze the experimental data,and try to find the reason and influence model of self vibration.Thus a new technique to improve the measurement accuracy of absolute gravimeter is provided.
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