Chapter three: the absolute stability of the general non-linear control system with delay.

第三章：一般非线性时滞控制系统的绝对稳定性。

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Because the delayed effects exist in any closed - loop control system, it is more important and significant to study the stability of the control system with delay.

由于任何闭环控制系统都存在滞后效应，所以研究滞后型控制系统的绝对稳定性意义尤为重要。

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Atlantic Southeast, which was sold to Skywest Airlines by Delta in 2005 but continues as Delta's connector partner, tends to get short shrift during weather delays by an Air Traffic Control system that would always rather delay flights with relatively fewer people on them.

FORBES: America's Worst Airlines