水质稳定性判断综合性实验的开设与探索

将水分析化学和给水处理原理结舍起来.开发了水质稳定性判断综合性实验.综合实验涉及水的碳酸平衡原理、水质稳定概念及多种水质分析方法.应用于水质检测实验教学,取得了良好的实验效果.     

2种制造/安装偏差对高速车辆方向稳定性的影响

为改善高速车辆的方向稳定性,研究了左右轴距不等及车身纵轴线与前后车轴中点连线不重合的2种制造/安装偏差,及其导致车辆高速行驶时出现跑偏现象的机理及相关影响.建立了这2种制造/安装偏差导致高速车辆发生跑偏运动的动力学模型,推导出其状态方程,并通过数值仿真定量解析了这2种制造/安装偏差对车辆高速方向稳定性的影响.研究结果表...     

一个三阶非线性微分方程的超全局渐近稳定性

以非标准分析为工具，讨论了一种三阶非线性微分方程的超全局渐近稳定性，大大削弱了经典理论中的条件，并将该方程的吸引域扩展为超实数域R^*。     

一般Lurie型直接控制系统绝对稳定的充分条件

本文利用大系统的分解方法，给出一般Ｌｕｒｉｅ型直接系统绝对稳定的几个充分条件。     

A Class of Fast Algorithms in Real-Time Simulation

1.INTRODUCTIONThepartofthesystemisoftenreplacedbyamathematicalmodelinareal-timesimulationsystem.Inordertoimplementtheclassofsimulation,everystepofthesimulationproceduremustbedonequicklysothatitsatisfiesphysicalsubsystems'sexecution11].Withrequestsofthedevelopmentofscienceresearchandlargeprojects'design,real-timesimulationhasbeenappliedextensivelyinaviation,aerospace,nuclearindustry,electronicindustry,andsoon,suchasreal-timesimulationofthecontrolsystemofaircrafts,real--timesimulationofmissi…     

关于单变量系统模型参考自适应控制的稳定性和最优性的证明（Ⅱ）

解学军（2000）给出了一种模型参考自适应控制的设计方案，该文给出了其稳定性及最优性的详细证明。     

具定量输入毒素的广义Logistic模型的性态

讨论了受定量输入毒素污染的种群生长广义Ｌｏｇｉｓｔｉｃ 模型的动力学性态． 通过研究模型解的渐近性质， 从而得到生物种群受不同程度的环境毒素影响而产生不同结局（ 灭种或持续生存） 的条件     

Stochastic stability of quasi-integrable Hamiltonian systems with time delay by using Lyapunov function method

The asymptotic Lyapunov stability of one quasi-integrable Hamiltonian system with time-delayed feedback control is studied by using Lyapunov functions and stochastic averaging method. First, a quasi-integrable Hamiltonian system with time-delayed feedback control subjected to Gaussian white noise excitation is approximated by a quasi-integrable Hamiltonian system without time delay. Then, stochastic averaging method for quasi-integrable Hamiltonian system is used to reduce the dimension of the original syst...     

高压水电阻起动柜在矿井主通风机方面的技术应用

首先,介绍GSDQ-1000型高压水电阻起动柜的原理、结构组成和控制方式;然后,结合现场条件,分析它在鹤煤八矿广场抽风机房电控方面的技术应用。经过实践证明,高压水电阻起动柜在矿井通风机领域内具有显著的安全效益。     

In-plane elastic stability of fixed parabolic shallow arches

The nonlinear behavior of fixed parabolic shallow arches subjected to a vertical uniform load is investigated to evaluate the in-plane buckling load.The virtual work principle method is used to establish the non-linear equilibrium and buckling equations.Analytical solutions for the non-linear in-plane symmetric snap-through and antisymmetric bifurcation buckling loads are obtained.Based on the least square method,an approximation for the symmetric buckling load of fixed parabolic arch is proposed to simplif...