According to the operation state of the system, BP nerve network is employed to regulate the parameter of PID controller to reach the optimization in the nonlinear and sluggish time-lag dry system.

In this controller wide area signals are adopted as its feedback input; in terms of stability theorem of time-lag system, a reference state feedback control system is designed and based on projective control principle the low-order output feedback control is obtained.

该控制器以广域信号为反馈输入，根据时滞系统稳定性定理形成参考状态反馈控制系统，基于射影控制原理获得低阶输出反馈控制。

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Based on the Q2 algorithm, past constraints are added to represent the latency. By propagating quantitative information in the system with past constraints and current constraints, qualitative simulation of fixed time-lag system can be realized.

并改进了定性与定量相集成的仿真方法&Q2算法，增加了反映延迟性质的过去约束，通过当前约束和过去约束在系统中传播定量信息，从而完成固定迟滞问题的定性仿真。

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Based on the summarization of traditional control methods in dealing with time-lag system, in this dissertation, we bring out that predictive control has good prospect for dealing with time-lag system.

本文在对用传统方法控制时滞系统进行综述的基础上，指出近年来发展起来的预测控制在时滞系统的控制上有良好的前景。

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A sensor failure detecting method of time-lag system based on time series neural network is proposed. Neural network is trained with Powell method, which is rapid and stable.

针对热力系统这类时滞系统，提出一种基于时间序列神经网络的故障检测新方法，神经网络的训练采用Powell方法，其收敛速度快、过程稳定。

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Inverse Problem of the Optimum Regulator for a Time-Invariant Linear System

关于定常线性系统最优调节器的逆问题

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Design of Variable Structure Control for Linear Time-Invariant Singular System with Time-Delay

滞后线性定常广义不确定系统的变结构控制设计

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In time domain, the harmonic wave does not change frequency when passing through the reflection coefficients system, coinciding with the condition of linear time-invariant system, so, the synthetic seismograph in time domain can be computed by convolution of wavelet with reflection coefficients sequence.

在时间域中，谐波经过反射系数系统后不改变频率，符合线性时不变系统的条件，因此在时间域中可以用子波与反射系数序列褶积的方法计算时间域合成地震记录。

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The key to judge whether a control system is stable or not is to find the stability condition of the system according to the stability definition, namely the condition on which the impulse response of the linear time-invariant system attenuates gradually and inclines to zero.

判断一个控制系统稳定与否的关键是基于稳定性定义找出系统稳定的条件，即线性定常系统的单位冲激响在何种情况下会随着的推移逐渐衰减并趋向于零。

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When the state and input matrices of a multivariable linear time-invariant system are perturbed, the problem of the estimation of pole perturbance of closed-loop system is considered by making use of the theory of branching of solutions of nonlinear equations.

本文利用非线性方程小分枝解的理论，研究多变量定常线性控制系统的状态矩阵与控制矩阵受到摄动时，闭环系统的极点所受到的摄动量的估计问题。

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The concept of the whitening of the grey system is given by referring to [ 1]. The "weak controllability" and "strong controllability" of linear time-invariant system are defined and discussed, and criteria are given.

在文献[1]的启发下，本文提出灰色系统白化的概念，就此意义定义了灰色线性定常系统的强可控性和弱可控性，并加以讨论，给出检验判据。

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A time-invariant system is used to describe the movement of the target during a short time sequences, and through Kalman filter we identify this system so as to make it have ability estimate the coming states while occlusions taken place.

该论文将目标的运动在较短时间内看作一时不变系统，通过引入Kalman滤波进行参数辨识而使发生遮挡后的跟踪系统具有后续状态预测的能力。

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Control effect of PID regulator is satisfactory for linear time-invariant system. But, in some complex control loops, such as nonlinear, large scale time delays, time varying and strong coupling systems, control effect is no satisfactory.

这种算法对于线性非时变系统，控制效果良好，但对于某些复杂环节，诸如非线性、大时滞、时变、强耦合系统，控制起来很难。

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The characteristics of random and time-varying of the closed-loop NCS is derived by the random and time-varying delays. Thus, it is difficult to use conventional linear time-invariant system theory to analysis and design NCS.

网络诱导时延的随机性和时变性使得闭环NCS也具有了随机性和时变性，从而难以利用常规线性时不变系统的理论和方法进行系统的分析和设计。

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For the case of two subsystems with unstable focus equilibrium, the most stabilizing control law of the linear time-invariant system is designed, and a necessary and sufficient condition for asymptotic stabilization is presented.

针对每个子系统的平衡点为不稳定的焦点类型，设计了时不变系统的最镇定控制，并给出了保证闭环系统渐近镇定的充分和必要条件。

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The Hopfield network was used to identify the three-order model of the hydraulic servo system for ship-gun, simulation results show the feasibility of using this system to identify the time-varying and time-invariant system.

使用Hopfield神经网络辨识舰炮液压伺服系统的三阶模型，仿真结果表明用这种系统辨识方法辨识时变和时不变系统是可行的。

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Then, using the tool of two steps transformation and the approaches of Lyapunov, the finite horizon state feedback controller is proposed for short time delay NCSs based on the linear time-invariant system.

接下来，应用两步变换和Lyapunov方法，对于线性时不变系统设计短时延NCSs有限时间的状态反馈控制器。

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In this paper, concepts of a linear time-invariant system are presented, including quasi-sliding mode ( ideal and nonideal quasi-sliding modes) and quasi-sliding sector.

研究了滞后离散线性定常系统的准滑模变结构控制问题，给出了滞后离散线性定常系统的准滑模，理想准滑模，非理想准滑模与准滑模带的概念；

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Aiming at continuous linear time-invariant system with network-induced delay, its network-based sliding-mode controller is designed and the corresponding closed loop form of the networked control system is established.

针对一类具有网络诱导时延的连续线性时不变被控对象模型，设计其网络滑模控制器，建立基于网络滑模控制器的闭环控制系统模型。

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In this paper a novel gated integrating method for IR-UWB correlation receiver is proposed, which uses linear time-invariant system to approximate integrator with discharging.

提出一种应用于脉冲超宽带相关接收机的新型门控积分方法，它利用简单的线性时不变系统实现带清除的积分。

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Both the Lyapunov stability and Popov's hyperstability of discrete linear time-invariant system in case of system parameter disturbance are discussed in this paper.

本文讨论了离散型线性定常系统在系统参数发生扰动时的李亚普诺夫稳定性与波波夫超稳定性。

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