非线性系统

A nerve net controller have been designed on the basis of the hardware design of the AC servo system and system model. The controller include two forward nerve net with three layers . One is designed to identify the AC servo system model and another is to control. The controller use special learning algorithm which to control system at the same time and improve its constringency pace through introducing new MFBP algorithm. The intelligent control algorithmic is programmed using C++ language after the controller have been designed .

在该交流伺服系统硬件设计和系统数学建模的基础上，设计了神经网络自适应控制器，这个控制器包括两个三层的前馈神经网络，一个神经网络用于非线性系统的辨识，另一个神经网络作为控制器，此控制器采取边学习边控制的工作方式，并采用一种新型的MFBP算法实现了控制算法的快速性，在控制器设计完成的基础上，利用C++语言具体实现智能控制算法的编写。

An improved nonlinear predictive control algorithm is proposed for a class of nonlinear systems which are described by Wiener model.

针对一类Wiener模型描述的非线性系统，提出了一种改进的非线性预测控制算法。

A unified chaos synthesis method based on tracking control is proposed for n-dimensional continuous time affined systems.

针对连续仿射非线性系统，提出一种基于非线性跟踪的混沌反控制统一方法。

The Volterra series expansion has altitudinal nonlinearly ,most nonlinear system can be expressed by the Volterra series expansion.

而Volterra级数展开式具有高度非线性，大量的非线性系统可以由Volterra级数表征。

Aiming at the major influencing factor of the logistics cost of coal enterprise as well as the non-linear characteristic of the coal enterprise logistics cost and the superiority that the neural network has in the solution of complex nonlinear system question, propos to use the BP neural network to do the forecasting of the logistics cost, establishs the forecast model of the logistics cost and do simulation and forecasting by frondose dates, the result indicates the precision of this forecast method is high, the convergent rate is quick, is one feasible forecast method.

重点针对影响煤炭企业物流成本的因素以及煤炭企业物流成本所具有的非线性特点和神经网络在解决复杂非线性系统问题方面所具有的优势，提出了采用BP神经网络来进行物流成本预测的方法。建立了基于BP神经网络的物流成本预测模型并应用具体数据对模型进行了模拟和预测，结果表明该方法预测精度高，是一种实际可行的预测方法。

With introducing of nonlinear dynamics and chaos theory, several nonlinear models of single species population, such as discrete time logistic model, Ricker model and Hassell model, were simulated.

本文在介绍混沌与非线性系统理论的基础上，对离散时间的Logistic模型，Ricker模型，Hassell模型的非线性动力学行为进行了模拟，并给出了相应的分形表达。

Discrete breathers, which are spatial localized and time periodic, are very common nonlinear excited modes in discrete nonlinear systems.

北京师范大学，凝聚态物理，2009年，博士离散呼吸子是广泛存在于离散非线性系统中的空间局域、时间周期的非线性激发模式。

Three-axis hydraulic simulator is a complex multiple-input-multiple-out nonlinear system. Its inner and outer gimbals are directly driven by a set of hydraulic servo system respectively, and its middle gimbal is directly driven by dual hydraulic motors servo system. The performance of hydraulic control system is very important to the simulator's.

液压三轴仿真转台是一个多输入多输出的复杂非线性系统，其内框和外框各由一套电液位置伺服系统直接驱动，中框由双液压马达伺服系统直接同步驱动，相应的液压控制系统的性能对转台的性能有着十分重要的影响。

Vacuum booster with brake master cylinder is a key part of automobile braking system. Its pneumatic fatigue test system consists of pneumatic subsystem, hydraulic subsystem, electronic control subsystem, etc. It is one kind of complex nonlinear systems.

真空助力器带主缸总成是汽车制动系统的关键增力部件，其气动疲劳试验系统由气动子系统、液压子系统、电控子系统等多个子系统构成，属于复杂的非线性系统。

Complex System Theory is the development of Modern System Theory and Non-linear Theory, which focuses on intelligence, adaptivity and abstract.

复杂系统理论是现代系统理论与非线性系统理论进一步结合与发展的产物，是系统科学的重要组成部分。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。