查询词典 stochastic control

Linkage mechanism of study. Forepart all gather be linkage mechanism structural analysis and agency designer. In recent years so emphasize in kinetic synthesis dynamic and motility analysis. So text needle towards inquire into slider four-bar linkage mechanism agency positioning control.Research emphases are as PID control, fuzzy control, Fuzzy sliding mode control three kinds of controllers for control core. Permeate practical mechanism to positioning control to function. Simple exertion market vends signal extract card (PCL-833) and multi-function card (PCI-1711). Make it make signal extract and bring forth exportation control voltage. Will AC servo motor turn signal, as positioning system point of angle sensor. Reach to slider four-bar linkage mechanism servo positional control research.

连杆机构的研究，早期都集中在连杆机构的结构分析和机构设计，近年来也多著重於运动及动力分析上，因此本文就是针对於探讨滑块四连杆机构的定位控制，研究重点是以PID控制、模糊控制、模糊顺滑模式控制三种控制器为控制核心，透过实际的机构达到控制定位的功能，运用市面上贩卖的讯号撷取卡(PCL-833)和多功能卡(PCI-1711)，使其对讯号做撷取和产生输出控制电压，将AC伺服马达的转动讯号，作为定位系统的角度感测器，达到滑块四连杆机构伺服定位控制的研究。

The invention discloses an integral air conditioner control box connection structure, which is characterized by the following: the control box controls the operation condition of integral air conditioner; the air guide device forms a control box setting panel in connection with the control box; the control box comprises the following parts: front panel with operation part in front of the control box; the cable guide groove connects the top side of front panel and several back boxes are formed on the back of control box for setting component, wherein the air guide device contains control box setting panel which is formed near the position of through-hole to set motor.

一种一体式空调器的控制箱连接结构，其特征在于，它包括如下几个部分：控制一体式空调器的运行状态的控制箱；形成有连接控制箱的控制箱安装面板的空气导向装置；控制箱由以下几个部分构成：前面设置有操作部的前面面板；结合于前面面板，并且上侧面形成有电缆导向槽，后面形成有多个安装构件的后箱；空气导向装置包含有控制箱安装面板，控制箱安装面板形成在安装电机的通孔的相邻位置。

Secondly, we consider stochastic LQ optimal control problem driven by Lévy processes and Brownian motion. By applying the -Lévy formula, Gronwall's inequality, Young's inequality and Cauchy-Schwarz inequality, we obtain the closeness property of the solution of multi-dimensional backward stochastic Riccati differential equations.

第二部分首先研究由布朗运动和Lévy过程共同驱动的随机LQ最优控制问题，接着利用-Lévy公式、Gronwall不等式、Young不等式及Cauchy-Schwarz不等式证明多维倒向随机Riccati微分方程适应解的闭性质，并利用此性质证明一维BSRDE解的存在唯一性。

A class of affine nonlinear system of single input-single output is investigated. Firstly, the nonlinear system is transformed into an equivalent linear system through a diffeomorphism transformation. The networked control problems for the delays are constant, stochastic and shorter than a sampling period, and long and stochastic are investigated respectively.

针对一类单输入-单输出仿射非线性系统，首先通过微分同胚变换实现了仿射非线性系统的无反馈精确线性化；然后基于精确化线性模型，分别讨论网络延时为常时滞，随机时滞小于一个采样周期和随机长时滞情况的控制问题。

CBFEC emphasizes direct correspondence of concepts in EC with its software architecture for ease of understanding and using; minimal coupling with specific problem structure for easy adaptation it to solve a large number of wholly different problems; interface-centered design for extendibility. To achieve those objects, the problem-solving method of EC is analyzed and the problem-solving procedure of EC is divided into three interactive aspects: population-based stochastic searching mechanism, problem specific information to implicitly guide the stochastic searching, and the observation and control of the computation procedure of EC. Then the key concepts of EC are identified in those three aspects; the normal implementations of those concepts are summarized; the interfaces represents those concepts in software are abstracted; the collaborations of components through those interfaces are designed. CBFEC is implemented on mainstream component software platform COM/DCOM (Component Object Model/Distributed COM from Microsoft), which includes interfaces definitions, commonly using EC components implemented those interfaces, such as Simply EA component, Steady State EA component, EA component, EA component, Population component, Tournament Selection component, Linear Ranking Selection component, Nonlinear Ranking Selection component, Random Number Generator component, etc, and the collaborations of those components through those interfaces.

具体的做法是把演化计算看作是基于组件的软件工程的一个应用领域：首先分析了演化计算求解问题的一般思路和方法，把演化计算问题求解过程分为："设计基于群体的随机搜索机制"、"研究问题的性质并以此隐含地定义算法的搜索方向"和"求解过程的观察与控制"三个部分；然后分别找出各个部分中的关键概念，总结这些概念现有的一般实现方法，抽取其本质，以此结合设计模式来定义组件软件的接口；通过分析演化计算各个概念之间的相互联系来设计组件软件间通过接口的进行交互的方式；最后还在目前一种主流组件软件开发平台COM／DCOM（微软提出的组件对象模型）的基础上实现了常用的演化计算组件，如简单演化算法组件、稳态演化算法组件、演化算法组件、演化算法组件、种群组件、锦标赛选择策略组件、线性排名选择策略组件、非线性排名选择策略组件、随机数发生器组件等等。

In 1978, Bismut first introduced a linear backward stochastic differential equation when he studied the stochastic optimal control.

1978年，法国数学家Bismut在研究随机最优控制时首次提出了线性倒向随机微分方程。

Optimal consumption and investment ; stochastic volatility ; stochastic optimal control ; value function

最优消费和投资；随机方差；随机最优控制；值函数

Based on Bellman stochastic nonlinear dynamic programming, we develop an optimal control algorithm for the discrete stochastic system with conditional Markov structure.

基于Bellman随机非线性动态规划法，提出了具有条件马尔科夫跳变结构的离散随机系统的最优控制方法，应用随机变结构系统的性质对最优控制算法进行了简化处理，并将后验概率密度函数用条件高斯函数来逼近，针对一类具有条件马尔科夫跳变结构的线性离散随机系统，给出了其逼近最优控制算法。

With the rapid development of the mathematical tools, such as stochastic control and stochastic integral, and computer technology, the portfolio under the continuous-time condition has become the research hotspot.

随着随机控制理论、随机微积分等数学工具以及计算机技术的迅猛发展，连续时间条件下的投资组合问题已成为研究的热点。

Suppose that the local source of traffic demand of the intersection is a stochastic variable of known parameter. An optimal control assignment model of the link of the dynamical transportation network flows of stochastic system is founded. Allowing for the construct of the model, based on the objective function of the link is transformed to based on the objective function of the intersection in order to solve it.

假设交叉点的局外入流是某已知参数的随机变量的情况下，建立了目标函数基于路段的随机系统最优的动态交通网络流分配的最优控制模型，充分分析该模型的结构，将该模型的目标函数转化为基于交叉点的目标函数，以便于求解该问题。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。