【摘要】 工作状态中的冲击力是地震检波器模态滑动的主要因素之一,且无法回避。为了揭示有关规律,准确地测量了地震检波器对不同大小冲击力的响应,应用非线性最小二乘法分析得出了有关模态及其变化规律。结论是在模态对模型下,冲击力增大时,模态距离呈增大趋势,而地震检波器的阻尼趋于稳定。更多还原

【Abstract】 It is known that the mode parameter variations of a geophone are not only complex but also slide. Among these factors, the impact force in the working state is the main one. In order to find out the variation rules of the mode, the responses under various impact forces are measured with high accuracy, and the concerned data are acquired through nonlinearity least square analysis. It is demonstrated with mode-pair model that as the impact force become larger, the mode distance tend to increase, and the damping tend to stability.更多还原