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约束

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This paper gives the time domain integral constraints of the feedback control systems tracking error that arise from the presence of stable zeros on or near the jω-axis, which shows that for a linear time invariant system, in order to guarantee the stability of the closed-loop system, the time domain integral constraints must be satisfied by the tracking error.

本文给出了反馈控制系统接近虚轴或虚轴上的稳定零点对跟踪误差的时间域积分约束。这一时间域积分约束是任何一个线性时不变系统为保证其闭环系统的稳定性,其跟踪误差必须满足的。

This paper proposes a model for reactive power optimization considering UPFC based on the interior point algorithm .

基于内点优化方法,提出了计及UPFC的无功优化模型,以系统网损最小为目标函数,采用UPFC电压源模型,将其作用等效为一系列电压和功率的约束,直接放到内点法的约束中,在不同的负荷运行方式下进行了优化分析。

Some conclusions of their research were tested.In their study,only intrapersonal constraints and intrinsic motivation had significant relationship,while the extrinsic motivation and constraints had no significant relationship.

Alexandris和Tsorbatzoudis的研究认为,只有内部约束与内在动机有显著的关系;外在动机与约束因素之间没有显著的关系;内在动机与体育参与频率之间是显著的正向关系。

The research result showed that intrapersonal and structural constrains affected the extrinsic motivation.There had no significant relationship between intrinsic motivation and frequen...

但研究发现,内在动机同时还受到结构约束的影响;内在和结构性约束都有可能影响到外在动机;内在动机与体育参与频率之间并没有显著的关系存在。

According to invalidate transform between non-linear constraining function and linear constraining function, and the disable partial differential coefficient of first order for objective function, GA has been chosen for the built mathematic mode, also, the conception of GA, its computing process, features, and operating parameters are introduced irrespectively in this article, meantime, a managerial software for oil pipeline's optimization is programmed.

根据优化模型中的非线性约束函数无法化为线性约束函数,目标函数无法求一阶偏导数的特点,本文从众多优化方法中选择遗传算法对所建立的数学模型进行求解,并对遗传算法的概念、计算步骤、特点、运行参数等逐一进行介绍,并编写了输油管道优化运行管理的软件。

Products obtained include ethane; liquefied petroleum gases (propane, butanes, propane-butane mixtures, ethane-propane mixtures); isopentane; and other small quantities of finished products, such as motor gasoline, special naphthas, jet fuel, kerosene, and distillate fuel oil.

为什么是平台期呢?石油生产被一系列的条件(经济衰退,石油需求的下降)所约束,其还被政治事件所约束,如战争和革命。

An augmented computational model for the forward dynamics is developed by using the Jourdain principle and the vector of Lagrange multipliers.

利用Jourdain原理来消除约束反力,并通过引入Lagrange乘子释放约束,得到了机械臂正动力学非递推形式的计算模型。

Through this model, which could make full use of the given prior information as the constraints of maximum likelihood estimation and based on Lagrange function, the calculation problem of fault prior probabilities was transformed to non-constrained optimization problem.

该模型以相关的先验信息作为最大概率估计的约束条件,并通过拉格朗日函数,将故障先验概率估算问题转化成无约束优化问题。

The problem of sub-Riemannian geodesics is a Lagrange problem with constraint. How to describe the constraint condition "γ'∈ D, a. e." is a difficult problem.

次黎曼测地线问题是变分学中的一个有约束的Lagrange问题,但在变分的过程中有个难点―如何推出约束条件"γ'∈D,在上几乎处处成立"的解析式。

First,this problem is converted into the problem of H_2 opmization constrainedby H_∞performance and pole location,then an auxiliary perfomance function is introduced,andthe former problem can be converted into the optimal problem of minimization of the auxiliaryperformance function with constraints described by a matrix equation,at Jast this problem issolved by lagrange multipliers,and the static output feedback controllers are designed.

首先将文题转化为一个具有H_∞性能和系统闭环极点位置约束的系统H_2性能优化问题。进而通过引入一个辅助性能函数,将其转化成有一个矩阵方程约束的辅助性能函数的最小化优化问题,并给出这个问题静态输出反馈控制器的解。

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