stable loop

Then, a global asymptotic stable adaptive control law is derived based on constructed Lyapunov function, and strict theoretical analysis is carried out for tracking performance of closed-loop system.

然后，基于构造的Lyapunov函数设计全局渐近稳定自适应控制律，并对闭环系统的跟踪性能进行了严格的理论分析。

The designed DCXO adopts Pierce architecture. The frequency drift correction is done by using a 6-bit automatic frequency control ( AFC) signal generated by the feedback correction loop between the oscillator and the base band. The long term stable frequency output has been obtained.

所设计的数控晶体振荡器采用Pierce结构，利用基带与振荡器的反馈环路产生的6位自动频率控制信号，对振荡器的频率漂移进行校准，能得到长期稳定的频率输出。

By a nonlinear feedback controller of the state and the delay state with the gain variations, our result guarantees that the closed-loop system is robustly stable and has an H ∞ disturbance attenuation bound.

文中设计一个具有状态增益变化和时滞状态增益变化的非线性反馈控制器，并且保证闭环系统是鲁棒稳定的同时具有H∞扰动衰减度。

In this paper, the design method of robust observer-controller for multivariable systems with nonlinear time-varying parameter perturbations is introduced, and the robust stable condition of the closed-loop systems with observer-controller are derived.

本文讨论了多变量系统参数摄动下鲁棒观测器-控制器的设计方法，并给出了带观测器-控制器闭环系统的鲁棒稳定条件。

For the tumbling loop, the servo actuator adopts three-position relay control fashion to make the loop be stable by using the relay control circuit, the three-position and five-passage valve and the gas amplification device.

对于滚转稳定回路，采用三位置继电控制舵，通过继电放大器、三位五通阀和气动放大器来控制舵面的偏转，以此来实现滚转稳定。

Then a stable loop theory from the research result is brought forward, on this ground, we design automated control system from hardware and software.

从而提出了定气圈式纺纱理论，并在这个基础上对细纱机的自动控制从硬件和软件上进行了设计。

Study of seeker Semi-Strapdown stable system hardware-in-the-loop simulation based on tracking differentiator

基于跟踪微分器的导引头半捷联稳定系统半实物仿真研究

The system consists of a stable linear time invariant system in its forward loop and dynamic uncertainties in the feedback loop, which can be described by an uncertain operator with its input time derivative satisfies integral quadratic constraints.

所考虑的系统由正向通道的线性时不变稳定系统与反馈通道的不确定动态特性所构成的闭环系统。反馈通道的不确定性由输入导数满足积分二次约束（IQC）的非线性算子描述。

Main steam temperature system is a typical open loop stable system with large time delay, its model can be described by an equivalent First Order plus Pure Dead Time ( FOPDT) type.

火电厂主汽温系统是典型的大滞后开环稳定系统，其过程模型可以等效为常用的一阶加纯滞后形式（FOPDT）。