查询词典 optimal control

In the second chapter, the problem of the optimal inputting rate control for a class of competitive population dynamics system with age-structure is discussed. By means of characteristic line, Gronwall Lemma, Bellman Lemma, adjoint system and so on, the Lipschitz continuity properties of the system in terms of the control variable is certificated, and the necessary condition of the optimal control is obtained.

第二章讨论了一类具有年龄结构的竞争种群系统最优输入率控制问题，综合应用特征线法，Gronwall引理，Bellman引理，共轭系统等知识，证明了系统解关于控制变量的Lipschitz连续性，给出了控制为最优的必要条件。

State variables at left end of time interval and costate at right end of time interval were taken as independent mixed variables, and the state and costate variables inside the time interval were approximated by Lagrange interpolation. Nonlinear optimal control problems were replaced by nonlinear equations through dual variable principle, and the symplectic algorithm for solving nonlinear optimal control problems can be obtained at the same time.

以时间区段一端状态和另一端协态作为混合独立变量，在时间区段内采用拉格朗日插值近似状态变量与协态变量，然后利用对偶变量变分原理并将非线性最优控制问题转化为非线性方程组的求解，最终得到求解非线性动力学系统最优控制问题的保辛数值方法。

The left ventricular meets the optimal efficiency principle at systolic state,we utilize the differ-ential geometry and differentiable dynamics to analyse the model and inverts it to the linear space for optimal control theory solution of optimal efficiency of ejective blood-flow which meets the physiology of optimal efficiency.

结果 在左心室的收缩最优效率原则时候，可应用微分几何与微分动力学数学分析法，将模型转换为线性空间下最优控制理论求得射血流量。

In the paper, many further discussions about the optimal control problem,the approximate optimal solution to generalized time optimal control problem and stability of the degenerate systems with delay are considered and some important and meaningful results are obtained in it.

而本篇论文则是对具有时滞的退化系统的最优控制问题，广义时间最优控制问题的近似最优解和稳定性问题进行了讨论并且得出了一系列的重要成果。

The method combing harmonic linearization and integral time absolute error optimal control to realize the PWM converters' optimal control is proposed according to the hysteresis current control's characteristics.

根据滞环电流控制的特点，提出了将谐波线性化方法与ITAE优化控制律相结合的方法，以实现对PWM变换器的优化控制。

Firstly, applying spectral factorization to minimize an integral square performance criterion containing tracking error and control energy, an optimal control law for the nominal model is derived on condition of control energy constraint. Then, for model uncertainty, using spectral factorization to minimize the variance of the actual system performance from the nominal performance over all frequency range, a robust controller design method is abtained, which has optimal robustness of the system nominal performance to model errors.

首先针对控制对象的标称模型应用谱分解最小化一个包含跟踪误差和控制能量在内的积分平方性能指标，导出一个控制能量约束条件下的最优控制律；然后再针对模型不确定性应用谱分解最小化实际系统性能和标称性能在整个频段上的方差，得到一个鲁棒控制器的设计方法，可使系统的标称性能对模型误差具有最优的鲁棒性。

The third chapter is about the optimal control for a class of age-dependent competitive population dynamics with diffusion, the continuity properties of the system solution in terms of the control variable is certificated, the Normal cone theory is applied and the necessary conditions of optimal control problem is obtained.

第三章研究了一类年龄相关的具有空间扩散的竞争种群系统最优控制问题，证明了最优解关于控制变量的连续依赖性，应用法锥理论，得到了最优解的必要条件。

Quasi Hamiltonian system; nonlinear stochastic optimal control; robustness; robust control; parametric uncertainty; uncertain disturbance; Bouc-Wen hysteretic system; Preisach hysteretic system; minimax optimal control; stochastic stabilization; stochastic averaging method; stochastic dynamical programming principle; stochastic differential game; maximal Lyapunov exponent

国家自然科学基金；拟Hamilton系统；非线性随机最优控制；鲁棒性；鲁棒控制；参数不确定性；不确定扰动； Bouc-Wen滞迟系统； Preisach滞迟系统；极小极大最优控制；随机稳定化；随机平均法；随机动态规划原理；随机微分对策；最大Lyapunov指数

Focusing on this practical engineering problem and by researching on some relative enterprises, this article intends to describe the dust generation mechanism, diffusion rules, control technology of dust by means of theoretical analysis and numerical simulation in coal washery, and put forward a comprehensive plan of dust control which takes bag filter as main dust removal equipment, and make an optimal design of air delivery and positioning, to realize the optimal control of dust.

针对这一工程实际问题，通过对相关企业的调研，本研究对选煤厂中粉尘产生机理、扩散规律及控制技术进行理论分析和数值模拟；并提出以除尘器为主要设备的粉尘治理综合方案，并对其风量、安装位置等工艺参数进行工程设计，以实现对粉尘的最优化控制。

Combined system simulation with optimal control, selected a typical water cooled primary/secondary chilled water system, used the research achievements of Annex 30 in IEA for the reference, this work firstly presents both the basic component models and the control system component models. Secondly gives the main models for parameter identification and experiment validation. Finally a dynamic digital simulator is set up using TRNSYS as the platform to substitute a real system to test and evaluate some kinds of online optimal supervisory control strategies after giving some essential data file input and finishing all the PID controllers'tuning.

本文将空调系统的仿真模拟与优化控制相结合，首先选择比较典型的水冷式二级泵集中空调系统，在国际能源组织IEA第30子课题Annex 30多年研究成果的基础上，建立了系统各设备的部件模型和控制系统部件模型，对主要模型参数的辨识方法进行分析，同时对其准确性给予验证；在此基础上，建立了以TRNSYS为仿真平台的集中空调水系统数字仿真器；通过必备数据文件的输入和对所有下位机控制回路PID参数的调试，最终完成可用于评估各种上位机优化控制方案的空调水系统数字仿真器。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失