控制理论

Experimental results contrast to PSO on well known and widely used various nonlinear chaos systems indicate that proposed algorithm is robust and efficient for UPO of discrete chaotic system.

第七章对于一般的离散混沌动力系统的控制问题，考虑到控制混沌是混沌理论走向应用的关键，一方面提出基于EA的控制策略：首先采用EA自适应的找到该混沌系统的不稳定周期点。

On the basia of hexagon stator flux trace method with Band-Band control,some improvements are made in the paper on the key sector such as the observation of magnetic field and a new scheme of polygon voltage vector control is presented in order to realize the fast regulation when three-value regulation is used to adjust torque.

使用两点式调节方法对定子磁链进行调节，实现六边形或圆形磁链轨迹方案，并在此基础上对直接转矩控制的关键环节磁通观测提出了改进意见，提出一种基于空间电压矢量调制理论的多边形电压矢量控制方案，以运用三值转矩控制方式实现转矩的快速调节。

In order to obtain a nonlinear dynamic control law which has global stability,the "workless force" is abstracted to simplify the induction motor control using the passivity theory.

为了实现异步电机转速的全局稳定非线性动态控制，应用无源性理论从能量的角度分析异步电机，从中分离出不必抵消的"无功力"，简化了异步电机的控制，并据此导出一个全局稳定的非线性动态输出反馈控制律。

By bination of disaster simulation and evaluation models checked by typical accident cases, disaster prevention software and engineering practice,this paper is established on basis of certain fact and correct theoretical model. KEY WORDS: Vapour cloud explosion, Boiling liquid expanding vapor explosion, Accident mechanism, Model, Simulation and evaluation, Artificial Neural Network, Artificial Intelligence, Decision Support System DSS

将灾害模拟评价理论模型及开发的软件系统与工程实践相结合，用典型事故案例来检验、修正理论模型，再应用于工程实践的灾害定量模拟评价、预防控制及救灾决策支持，使整篇论文建立在确定的事实和正确的理论相结合的基础之上。

The third part of this thesis is reactive simulating calculation In this section, some well-known auxiliaries are selected to compute in density functional theory B3LYP on Gaussian 03, from which the relationship between reaction active energies of transition states and enantiomeric excess of chiral products homoallylic alcohols isobtained based on relative reactive ratio theory. Using this relationship, calculations on the reaction of more than eight auxiliaries with four other aldehydes are carried out in AMI and MNDO, proving that N,N\'-dibenzyl tartamide has higher enantioselectivity than others in this reaction.

第三部分为计算化学部分，运用密度泛函理论B3LYP方法在Gaussian03软件上对已经报道的几种手性配体参与的醛不对称烯丙基化反应过程进行模拟计算，基于相对反应速率理论找出两种构型过渡态间活化能的差异与产物光学收率之间的关系；并以此为基础，用AM1和MNDO方法对上述合成的几种配体控制的反应过程进行量化计算，从而在理论上证实了N-苄基酒石酸二酰胺配体在醛的不对称烯丙基化反应中具有较高的立体选择性。

The invention relates to an electrochemical method for preparing ultra-fine tantalum powder, wherein it uses the mixture slat flux with CaCl2 or CaCl2 as electrolyte; composites Ta2O5 powder/block with metal collector as solid cathode; uses graphite or inertia anode as anode; uses reference polar to control the electrolysis level, under inertia gas to electrolyze at 500-1000Deg. C; and the electrolysis time should make electrolysis electricity reach needed amount; reduces Ta2O5 into ultra-fine metal tantalum powder.

本发明涉及一种超细钽粉的电化学制备方法，以CaCl2或者含有CaCl2的混盐熔体为电解质，将Ta2O5粉末或块与金属集流体复合作为固态阴极，以石墨或惰性阳极作为阳极，用参比电极控制电解电位在惰性气氛保护下进行电解，电解温度控制在500-1000℃，控制电解时间使电解电量到达到理论所需电量及以上，将五氧化二钽电化学还原为超细金属钽粉。

Imitational precision is good, which demonstrate that Visual Structure Expert Systemcan be used to imitate cable-stayed bridge construction control, under the condition that forward-calculation is used and girder cell is used to imitate the cable cell, which is capable of acquire better control precision.

施工控制各项参数实测值与理论计算值较吻合、精度较高，说明采用结构大师用正装法对斜拉桥进行施工控制仿真计算，在斜拉索模拟为梁单元的情况下，能够取得较高的控制精度。

Therefore, based on the research of pathology, aiming at the long-term dissevered between the land use and transportation network system in the urban planning, construction and management fields, and the narrow definition of urban transportation system and matching supply and demand of this contradictions unity, this thesis define the integrated urban land use-transportation system (abbreviation IULTS, urban L-T system or system for short). From the interaction and the spontaneous mutual adjustment phenomena between the land use subsystem and transportation subsystem, this thesis explore the inherent laws and internal mechanism of IULTS evolution behind the phenomena, and proposed system optimization theory and methods from the mechanism of system development and evolution. It is expected that the conclusion can provide a meaningful reference for analyzing and solving traffic problems, and understanding deeply the matter that if IULTS is controllable, how to control and the direction, theory and methods of controlling.

故此，论文立足于对病理的探讨，针对当前城市规划、建设与管理上对土地利用与交通系统长期割裂的状况，及现状城市交通系统的狭义定义，基于供需匹配这一矛盾统一体提出了城市用地-交通综合系统(英文缩写IULTS，简称为城市L-T系统，下文有时直接简称为系统)概念，从系统内用地子系统与交通子系统之间所表现的互馈影响、相互调节现象出发，结合定性分析和定量研究，探究现象背后所隐藏的客观规律，揭示统发展演化所遵循的固有规律与内在机理，从系统发展演化机理上提出系统优化的相关理论与方法，以期研究结论能为从机理上研究、分析、解决交通问题，深入认识系统是否可控、如何可控及控制发展的方向、理论与方法等问题提供了有意义的理论参考。

According to the theory of swaging process, robot...

本文根据已有的旋锻加工理论、机器人理论以及机械理论，认真地研究了旋锻加工过程及其自动化过程的实现型式，提出了利用气动机械手来代替人手进行旋锻加工的实施方案，方案包括：上料、加热、旋锻、调头、再加热、旋锻、移出等工序的自动化系统，并依此设计机械手主体、顶杆机构、换向机构、移送机构等子系统及其控制部分，并通过静力学、动力学分析以及三维建模仿真优化技术论证了方案可行性、可靠性，试图解决钨杆旋锻加工过程的自动化问题。

Firstly, it introduces the present relative research theory of this field in the domestic and foreign countries and their application in state-owned commercial bank, including trust agent theory, motivation theory, controlled by employee theory and management extent and management level, management cost and efficiency.

论文首先阐述了目前国内外相关理论的研究现状及其在国有商业银行中的应用，包括委托代理理论、激励理论、内部人控制、管理幅度与管理层次、管理成本与管理效率。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。