不变线性系统 meaning in Chinese

invariable linear system

Reconstruction of - shift invariance linear system
平移不变线性系统的结构重建问题
When awg regarded as space unchanged linear system , an analytical solution of out - waveguide field is obtained by using the impulse response function . the crosstalk transformation on account of apertometer and waveguide spacing is also obtained by numerical calculation
本文还将awg视为空间不变线性系统，使用点扩展函数的方法，求出awg系统输出分布的解析式，通过数值计算得到串扰与数值孔径及其波导间距的关系。
The current control approaches are based on frequency domain methods such as pid control which assumes linear time invariant system dynamics . the advantages of these approaches are simplicity and ease of stability and robustness analysis . however , the decrease in performanc e and poor efficiency translates to additional payload and cannot meet the demand of current spacecraft control
当前飞行器主要的控制方法是基于近似时不变线性系统的频域分析法(如pid控制) ，这种方法的优点是简单且易于稳定性和鲁棒性分析，但它所达到的低性能和低效率却转化成了飞行器控制过程的附加载荷，还远不够满足当前飞行器控制的要求。