核磁共振仪受环境随机激励的非线性隔离与参数优化

Nonlinear Isolation and Its Parameter Optimization of Nuclear Magnetoresonator Excited by Random Surrounding Forces

本文针对核磁共振仪的隔离问题,提取非线性随机振动理论模型,在FPK方程中对系统的参数进行了优化,用统计线性化方法计算响应;用非线性隔离系统传递率的定义计算隔振效果,最后对隔离装置进行了实验分析和信号处理,并对理论计算与实验结果进行了对比.

To aim at the vibration isolation of nuclear magnetoresonator, we set up a theoretical model of nonlinear random vibration of this system. By FPK equation, the system parameters are optimized. By statistical linearization method, its responses are got. According to the definition of its transmit radio , its isolation results are calculated. At last, the signal processing and experimental analysis of the isolating devices are made, and the theoratical computations are compared with theexperimental results.