Guidance Law of Maneuvering Reentry Warhead Based on Stochastic Variable Structure Control Theory 基于随机变结构控制理论的再入弹头制导律
In order to disassembly parts from used products, usually many steps are needed, and disassembling time in each step is stochastic variable. 对废旧产品中的零件进行拆卸通常需要多个步骤才能完成,而每个步骤所需要的拆卸时间都是随机变化的。
This paper introduces the problems of some identical equation solved by the numerical characters of the classic probability and stochastic variable. 介绍了用古典概率和随机变量的数字特征来解决数学分析中的一些恒等式问题。
It has three important properties: it has stationary and independent increments, and every increment is a normally distributed stochastic variable. 布朗运动具有三个基本性质:第一是独立增,第二是稳态增,第三是增量是服从正态分布的随机变量。
As it actually has fluctuation, the demand is treated as stochastic variable. 由于实际中需求具有波动性,将需求作为随机变量来处理。
For the uncertain character of material function, the intensity of spray concrete and concrete lining is uncertain too. It can describe quality character better by probability model and statistic parameter of stochastic variable. 由于材料性能具有不确定性,喷混凝土和二次衬砌的强度亦同样具有不确定性,一般用随机变量的概率模型和统计参数来描述,能更好地描述其质量特征。
The probability theory and fuzzy theory are adopted in the quantification of the uncertainty of the parameters to deduce a unified function to consider the effect of strengthening and embody the effect of load in the fuzzy stochastic variable coefficient. 利用概率理论和模糊理论来具体定量分析这一系列参数的不确定性,推导了统一的可以考虑加固等处理措施的统一功能函数,并将各种荷载作用体现在模糊随机变量系数中。
Linear potential structure equation is limit to study the continuous stochastic variable yet. 线性潜在结构方程式模型还仅限于研究连续型随机变量,对于各领域大量出现的离散型随机变量,还没有适用的线性结构方程式模型。
Market demand is a stochastic variable which brings difficulty for most profit by ordering right goods. 市场需求量是一个随机变量,它给订货者追求最大利润,确定最优订货量带来了困难。
Secondly, the output control model is offered, which is based on the idea that the ultimate requirement is an index stochastic variable. 二是提出了基于最终需求为指数型随机变量的产出量的控制模型。
A discrete method for stochastic variable ( features) space of class-conditional-probability density and estimation method for class-conditional-probability distribution is proposed. 本文提出了类条件概率密度随机变量(特征)空间离散化及类条件概率分布估计方法。
The 2-stage production-distribution global supply chain tactical planning model based on fuzzy stochastic expected value programming is presented, whose biggest difference from the previous models is that the market demand is regarded as fuzzy stochastic variable; 提出了基于模糊随机期望规划的生产-分销二级跨国供应链战术计划模型,它与以往供应链计划模型最大的不同之处在于将市场需求看作模糊随机变量;
This paper analyses also the probability estimate problems under the conditions that return series is correlated and return is multivariate stochastic variable. 本文对收益率序列存在相关性、收益率是多元随机变量情况下的尾概率估计问题也进行了分析。
Fuzzy Stochastic Variable and Variational Principle 模糊随机变量及其变分原理
By means of the examples and with the help of pictures, this paper shows detailedly and visually several ways to work out sum distribution density of a stochastic variable. 本文通过对例题的解答,借助图象,详细而又直观地给出了求随机变量和的分布密度的几种方法。
After confirming the failure models of the structure and the probability distributing of the stochastic variable, we could use Monte Carlo Method and Response Surface Method doing reliability analysis of the bridge. 在确定结构的失效模式和随机变量的概率分布后,分别采用蒙特卡罗法和响应面法对桥梁进行可靠性分析,比较两种计算方法的计算结果,表明两者比较接近,都取得较好的计算效果。
An expectation model placing orders with multi-suppliers with capacity constraint is established, in which the demand is stochastic variable. 建立了一个向多个有能力约束的供应商采购的库存模型;
Load uncertainty in power system is regarded as stochastic variable or fuzzy number in this paper. 同时采用随机变量及模糊数计及电力系统运行中负荷的不确定性。
Then through series expansion of the nonlinear transformation function, expressions of the true mean and covariance of the stochastic variable that results from nonlinear transformation are obtained, which also result in the form of first-order linearization. 文中通过对非线性变换的函数进行级数展开,获得了非线性变换后随机变量的真实均值和协方差的表达式,并得到一阶线性化的形式;
If either of strength and stress is stochastic variable and another is fuzzy variable, the. 当强度和应力之一为随机变量,另一个为模糊变量时,提出将模糊变量通过模糊集合截集转换为区间数,并假定模糊变量在此区间取值的可能性与相应的隶属函数值成正比。
The extremum distribution of stochastic variable can be obtained by spectral analysis. 随机变量的极值分布可以通过对水位监测数据进行频谱分析获得。
The Fuzzy reliability design making up of fuzzy variable with the stochastic variable 随机变量和模糊变量组合时的模糊可靠性设计
In this paper, the principle of geometrically based single bounce elliptical model ( GBSBEM) was researched. On the basis of stochastic variable function transform theory we deduced the TOA and DOA simulation principle from a uniform distribution stochastic variable. 研究了基于单反射椭圆模型的多径信道模型原理,根据随机变量函数的变换原理,推导了由均匀分布的随机变量样本得到TOA、DOA样本的仿真原理。
A geometrically based single bounce elliptical ( GBSBE) multiple channel model is analyzed in this dissertation, based on probability distribution theory of stochastic variable function, a simulative method of this channel model is designed. 分析了一种基于单反射的椭圆模型的多径信道,根据随机变量函数的概率分布理论设计了一种这种信道模型的仿真方法。
The risk analysis of the flood control capacity for river levee is conducted by a stochastic variable method. The definition of reliability and the risk for flood control capacity, the model and computation method of risk analysis are given. 采用随机变量的分析方法,对河道堤防的防洪能力进行风险分析,给出了河道防洪能力的可靠度和风险度的定义、风险计算模式和计算方法。
So it is the important subject in probability to study the independence of stochastic variable. 因而,关于随机变量的独立性的研究构成了概率的重要课题。
The equivalent dynamic load, a major parameter influencing the bearing life, being taken as a stochastic variable, and the factors influencing equivalent dynamic load as fuzzy variables, the service life of bearing was checked with the fuzzy reliability method. 将影响轴承寿命的主要参数当量动载荷当成随机变量处理,而影响当量动载荷的因素视为模糊变量,用模糊可靠性方法校核轴承的寿命。
In fact many with the volume of traffic correlation factor is mostly the stochastic variable. 实际上许多跟交通量相关的因素大多是随机的变量。
The stochastic variable model of construction timing selection of rail transit projects based on real option was built up. 建立城市轨道交通项目建设时机选择的实物期权随机变量模型。
A stochastic variable satisfying Bernoulli random binary distribution is introduced and a new system model is established. 通过引入一个满足贝努力分布的随机变量,建立了一个新的系统模型。