基于典型二阶惯性系统过载失稳的研究分析及应用

Analysis and application of overload instability based on typical second-order inertial system

通过对典型二阶惯性系统传递函数、结构阻尼、伺服电路力矩反馈网络原理等系统分析,对载体加速度测量过程中,敏感加速度的惯性器件输出出现系统失稳现象进行详细研究分析,在伺服电路调试阶段,减小调整电阻阻值,优化伺服电路电刚度,降低系统的固有频率,从而避免加速度惯性器件因表头结构、装配形成阻尼系数的个体差异,在量程范围内工作过载导致系统失稳的现象。

Through the analysis of the transfer function of the typical second-order inertial system,the structural damping,the principle of the torque feedback network of the servo circuit,etc.,the system instability phenomenon of the acceleration-sensitive inertial device output during the carrier acceleration measurement process is analyzed in detail.And then the servo circuit is debugged.The resistance value of the adjustment resistor is reduced,the electrical stiffness of the servo circuit is optimized,and the natural frequency of the system is reduced,so as to avoid the individual differences in the damping coefficient of the acceleration inertial device caused by the structure and assembly of the meter head,and eliminate the system instability phenomenon caused by work overload within the range.