最优控制

With the help of L〓 gain constraint condition in the H〓 control theory, the thesis studies the robustness analysis of optimal control in chaotic Lur'e systems.

本文还利用H〓控制理论中的L〓增益约束条件对Lur'e混沌系统最优控制进行了鲁棒性分析。

The maximum principle and the feedback control law are obtained.

通过系统地应用法锥性质和变分原理，获得了外界对种群的影响率为控制变量的最优控制的极大值原理。

Second, the conventional linear optimal control can make system stabilize at neighborhood of balance point only. In this paper, we introduced a method of control by Artificial Neural Network. And also, identified variable on line. This method enhanced the adaptability of the control.

其次，由于常规的线性最优控制只能在平衡点附近稳定，这里利用人工神经网络在线识别不同运行状况下的各个参数值，离线训练网络，最后用训练成功的网络进行在线控制，实现了系统的大范围稳定。

Stochastic optimal control is an important branch of control theory.

随机最优控制是现代控制理论的一个重要分支。

This paper discusses the application of linear quadratic optimal control theory in network PID control system.

讨论了线性二次型最优控制理论在神经网络PID控制系统中的应用。

This paper has investigated optimal control for time-delay systems in the case that control energy is to be considered.

文中对时滞系统在控制能量存在约束时的最优控制问题进行了探讨。

In solving problems of optimal control system s, we may have the goal of finding a rule

在解决最优控制系统的问题时，我们有可能找到一个确定现有控制策略的规则，在某

Dual model;Asset control;Dividend payment;Equity issuance;Optimal control strategy;Value function

对偶模型；资产控制；分红；发行股票；最优控制策略；值函数

It also features an all-new active decent control that works together with the braking system for optimum control when moving down hills and steep inclines.

此外，它还采用一个全新的积极体面的控制工程，连同制动系统最优控制时，向下移动的山丘和陡峭的倾向。

ABSTRACT The researches of this thesis are carried out around the development of high performance machine tool spindle permanent magnet synchronous motor and its drive system. Five parts are included: First of all, concerning the operating characteristics of the machine tool spindle drive system, the optimum current control strategies of spindle PMSM are determined; The design rules of spindle PMSM's key parameters are summarized, based on the study on the influences of the design parameters on the performances of the PMSM operating at different current control strategies; The practical methods to improve the flux-weakening ability of the PMSM are presented; Based on the analysis and comparison of the operating performances of PMSM with different rotor structures, a novel PMSM rotor structure, which is of excellent mechanical performance, suitable for fluxweakening operation and can improve the torque output capacity in the same time, is presented.

本文围绕高性能机床主轴永磁同步电动机及其传动系统的设计研究展开，所做工作主要包括五部分：首先，确定了主轴永磁同步电动机定子电流的最优控制策略；通过对不同控制策略下主要设计参数对主轴永磁同步电动机性能影响的计算研究，总结了参数设计规律；提出了永磁同步电动机弱磁扩速的实用措施；在分析比较不同转子磁路结构电机的性能，尤其是弱磁扩速能力的基础上，提出了一种机械性能优越，易于弱磁扩速，同时能保证电机恒转矩运行时的转矩输出能力的新型转子磁路结构。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。