动力系统

The results confirm that if the dynamic system has stable equilibrium s...

结果证明：( 1)若动力系统在整个相空间内存在稳定的平衡态，在稳定的平衡态附近，系统随时间长期演化行为是可预测的。

Complicated system ; fractal ; nonlinear dynamics ; Mandelbrot set ; Julia set ; extension factor ; ternary number ; period-checking algorithm ; volume rendering algorithm ; equivariant map ; chaotic dynamic system ; synthesis of mechanism

国家自然科学基金；国家重点基础研究发展计划(973计划)复杂系统；分形；非线性动力学；可视化； Mandelbrot集； Julia集；变形伸缩因子；三元数；周期检测法；体绘制算法；等变映射；混沌动力系统；机构综合

A dynamical system is just a finite dimensional representation of the system quiver Q with dimension vector .

一个动力系统就是系统箭图Q的一个维数向量为的有限维表示。

The main purpose of this dissertation is to study the problems of symmetries and conserved quantities of controllable nonholonomic systems and mechanico-electrical dynamical systems, based on the invariance of the Hamilton action under the infinitesimal Lie group transformation.

本文基于Hamilton作用量在无限小Lie群变换下的不变性，研究可控非完整系统与机电动力系统的对称性和守恒量问题。

Liquid propellant missile ; power system ; dynamic process ; system modeling

液体推进剂导弹；动力系统；动态过程；系统建模

This method constituted a discrete dynamic moving average model in state space and further adopted 2 algorithm to precisely compute Markov parameter matrix in the identification model.

基于状态空间描述建立了离散动力系统滑动平均模型，并应用2算法精细计算了系统模型的马尔科夫参数矩阵，给出了全局时间域内多点分布动态载荷识别问题的精细识别模型。

Introducing the fundamental knowledge of modern differential geometry, we present the geometric descriptions of Lie symmetry of the system.

将现代微分几何知识引入机电动力系统，给出该系统Lie对称性的几何描述。

The properties of the general linear multistep method for piecewise smooth dynamics of mechanical systems are analyzed and a picewise smooth vibration model is introduced. Some numerical experiments on the vibration model are made and several improved integration methods are presented.

采用Taylor级数展开方法，分析了常用的线性多步法在非光滑机械动力系统中的计算精度特性，建立了一个非光滑的机械振动系统检验模型，给出了典型的计算实例，并提出了几种改善计算精度的措施。

In this dissertation we use adjointoperator method to compute normal forms of order 2,order 3 and order 4 for nonlineardynamical system with nilpotent linear part and Z2—asymmetry.

2当研究平均系统的非零解的高余维退化分岔时，需要利用不具有Z2—对称性的非线性动力系统的高阶规范形。

Our focus is on regimes away from the complete synchronization state, when the coupling is not strong enough, when the oscillators are under the influence of noise or when the oscillators are nonidentical.

所以是否可以将我们研究的对象分为这么两层次：复杂系统是第一层、复杂网络与动力系统是第二层，这一层是拓扑结构与单一结点动力学。

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。