反馈控制系统

absolute term can substitute for square term for nonlinear action, when the square term in lorenz-like system proposed by liu is replaced by absolute term, a new hyperchaotic system containing absolute term can be constructed by using proper feedback control method.

绝对值项的非线性化作用往往可以代替平方项，liu等人提出的类lorenz系统中平方项用绝对值代替，并利用合适的反馈控制手段，可以构造一种新的含有绝对值项的超混沌系统。

An increment feedback control law is then developed and proved to balance the pendulum-angle and drive the cart to track an arbitrary position without estimating the parameter uncertainties .

通过对系统输出的递归分解迭代设计，构成了扩展状态空间上的复杂非线性滑模，结合增量反馈控制，无需对系统不确定性的估计，可以稳定摆的倒立并将小车驱动到任意的距离。

In this paper,by using the comparison theorems and constructing suitable Lyapunov function, the sufficient conditions are obtained for the permanence and existence of globally asymptotically stable positive periodic solution of the system.

研究了具有反馈控制的n种群非自治周期竞争系统的持续性，利用微分不等式并构造适当的Lyapunov函数得到系统存在惟一、全局吸引的正周期解的充分条

Topics covered include: nonlinear ordinary differential equations; planar autonomous systems; fundamental theory: Picard iteration, contraction mapping theorem, and Bellman-Gronwall lemma; stability of equilibria by Lyapunov's first and second methods; feedback linearization; and application to nonlinear circuits and control systems.

课程的主题包括：非线性常微分方程组；二维自治系统；与课程相关的基本理论，如比卡迭代法，压缩映射定理，Bellman-Gronwall引理，平衡点稳定性分析的李雅普诺夫第一种方法和第二种方法，反馈的线性化；以及非线性电路和控制系统的实际应用。

The research on the precision of synchronizing control system of hydraulic 4-roller crimper that combines common electromagnetic value with mechanical reacting amplification mechanism and the methods to solve the problems of cylinder synchronous running havebeen performed.

论述了W12—25×2000型液压四辊卷板机的同步控制系统改进过程中遇到的问题及研究解决方法，介绍了采用普通电磁换向阀配以机械反馈放大机构解决液压四辊卷板机同步运动的控制精度问题。

And, it establishes the computer model with the Scott·Henseleit method, which analyses and optimizes the ventilation network and auto-creates the figures of the evading disaster and succoring disaster with the computer. The paper establishes the GM(1,1) gray forecast model, and forecasts the amount of gasemission of the laneway based on the history data, and then compartmentalizes the danger grade for the laneway. Utilizing the principle and method of cybernetics, the paper brings the feed-forward and feedback. controlling method on the hidden risk in the mine, namely, the double-loop model of forecasting and early- warning. Especially in the feed-forward forecasting, the paper adopts the one unit non-linear regression analysis and forecast method, and forecasts the hidden risk amount in the mine during some time, and compartmentalizes the hidden risk grade based on the history data.

论文中，利用斯考特·亨斯雷法建立计算机模型，对矿井通风系统进行解算和优化调节，并通过计算机自动生成避灾、救灾路线图；建立灰色GM(1，1)预测模型，对巷道瓦斯涌出量进行预测，进而对巷道中的瓦斯事故危险性进行危险等级划分；利用控制论的原理和方法，提出了煤矿通防隐患前馈——反馈控制方法，即预测、预警双环模型，采用一元非线性回归分析预测方法，对煤矿某一段时间内的隐患数量进行预测，并结合历史数据，对当前煤矿隐患排查处理状况划分等级，分别予以管理和控制。

Surface temperature control of paper machine driers used to produce 6μ capacitor paper is discussed in this paper. Mathematical model of the controlled plant is obtained by means of dynamic measurement and theoretical analysis.

对于生产高级电容器纸的烘缸表面温度的最佳分布和最优控制的问题，本文用机理分析和动态测试相结合的方法求得了数学模型；设计了前馈-反馈最优控制系统。

Time aeration control mode and time-temperature feedback aeration control mode are suitable for composting systems in China.

堆肥系统采用时间控制和时间—温度反馈控制的通风方式较为适合我国国情。

Then confirm the validity of the controller through simulation algorithm.Here we realized the stable control of chaos system through the mutual effect of state variable which is extremely simple and easy to realize.

本文结合反馈控制方法，提出了一种基于系统状态变量的错位线性控制器设计策略，用李雅普诺夫稳定性方法证明了该控制策略的稳定性，并设计了数值仿真算法验证了控制器的有效性。

The aerodynamics subsystem is designed employing classical control methodology, including the inner loop which adopt angular rate feedback to stabilizing the attitude, and the outer loop which track the guidance command, and the proper emendation nets are designed for each loop.

采用古典控制理论来设计气动力控制系统，包括具有角速度反馈的稳定内回路、跟踪制导指令的外回路以及各校正环节的设计。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。