【摘要】 为进一步理解系统的性能与系统零极点分布的关系,在已有系统函数的基础上,增加零极点并绘制零极点改变前后的系统根轨迹曲线、系统阶跃响应曲线,观察系统根轨迹曲线的变化趋势和系统阶跃响应的变化速度、振荡波动幅度,得出零极点分布对系统性能、根轨迹曲线变化趋势的影响的结论.理解零极点分布和系统根轨迹曲线的变化趋势以及系统性能之间的联系,可以为系统设计和分析提供理论支撑.更多还原

【Abstract】 The performance index of the control system is closely related to the distribution of the system’s poles and zeros. By drawing the root locus curve of the system,the influence of the zero pole distribution on the change trend of the root locus curve is analyzed. Adding zero and pole on the known system transfer function,the change of root locus curve and system step response are observed. The influence on system performance that the change of system zero and pole is concluded,which provides theoretical support for improving system performance or adjusting system performance.更多还原