控制理论

The book is divided into 14 chapters, including Introduction, continuous control system theory, process and discrete sampling, Z transform, sampled-data systems, discrete approximation of continuous system the equivalent, based on mathematical transform the classical design method, based on state space pole placement design methodology, multi-variable system of quadratic optimal control, quantitative effects, the choice of sampling period, the digital control system modeling, digital control system for a variety of design methods, variables quadratic optimal control systems, sampling cycle of selection, non-linear control of the problem, as well as digital control system, a typical application - Disk drive servo control design.

全书共分14章，内容包括概论、连续控制系统理论、采样过程和离散化、Z变换、采样数据系统、连续系统的近似离散等效、基于数学变换的经典设计方法、基于状态空间的极点配置设计方法、多变量系统的二次型最优控制、量化效应、采样周期的选择、数字控制系统的建模问题、数字控制系统的各种设计方法、变量系统的二次型最优控制、采样周期的选择、非线性控制的有关问题，以及数字控制系统的一个典型应用——磁盘驱动器的伺服控制设计等。

To accelerate the widespread of Synchronous Chip Seal and improve the operation quality of Synchronous Chipsealer, key techniques which influence the operation quality is studied detailedly, including the control of distributing quality, the dynamics characteristics of hydraulic system and the spray characteristics of asphalt nozzle of Synchronous Chipsealer.1 The factors which influence Synchronous Chip Seal quality are studied. Fiducial probability of simultaneous distribution density is advised to be used in evaluating the distribution bias and standard deviation of asphalt and aggregates simultaneously, which is more advanced than the single index evaluation method used before.2 The volume efficiency formula of asphalt pump is revised after analyzing the data of volume efficiency with mathematical statistics, which is helpful to match the asphalt spray system and control the flow out of asphalt pump accurately. With equation deduction and experiment, dynamic of hydraulic system used in Synchronous Chipsealer is studied, which lay the theory foundation on improving the stability and efficiency from design and controlling.4 Simulation on hydraulic system used in Synchronous Chipsealer is done with AMESim; the results indicate that multi-circle parallel connected hydraulic system with constant pressure power is better than that with load-sensing pressure power at present, because the latter will oscillate when the multi circles work at the same time. This conclusion has been proved during the debug of Synchronous Chipsealer.5 Asphalt nozzle characteristics, such as flat jet shape, flow distribution, are studied with experiment, the results indicate that cross quality of asphalt distributing is not increased linearly follow the increase of fan overlap level, the best point usually exists between two whole overlap level, asphalt distributing quality is better than±4% at the 2.5 overlap level, meets the superior specified in standard; The distribution quality of Synchronous Chipsealer can be increased by spray asphalt of different flow rang with nozzle of different diameter

为了加快同步碎石封层技术的推广，提高同步碎石封层设备的作业质量，本文对同步碎石封层设备作业质量的影响因素与控制方法、液压系统的动力学特性和沥青喷嘴的喷洒特性等关键技术进行了深入细致的研究：1研究了影响同步碎石封层作业质量的因素，提出了采用联合密度分布置信概率对同步碎石封层中沥青洒布量和碎石撒布量的系统偏差和标准差指标进行综合评价的方法，克服了传统评价方法只能对单一指标进行评价的缺陷；2采用数理统计的方法，研究了沥青泵的容积效率特性，修正了沥青泵容积效率公式，为沥青喷洒系统的匹配和沥青泵出口流量的精确控制提供了依据；采用数理方程推导与试验相结合的方法，研究了同步碎石封层设备液压系统的动力学特性，为从设计和控制的角度提高同步碎石封层设备液压系统的稳定性和效率奠定了理论基础；3运用AMESim软件对采用负载敏感控制和恒压控制的两种同步碎石封层设备液压系统进行仿真，结果表明：负载敏感控制的并联液压系统在多回路同时工作时，由于液压泵排量控制参考压力不稳定，容易引发液压系统振荡，恒压控制的并联液压系统是目前技术条件下比较理想的同步碎石封层设备工作装置驱动方案；该结论亦通过同步碎石封层设备装机试验得到了验证。4采用试验的方法对沥青喷嘴的喷洒特性进行了研究，结果表明：沥青洒布的横向精度并不是随着喷洒扇面重叠度的增加线性增加，其最高点通常出现在二个重叠度之间的"半重叠位置"，"2.5重叠"洒布时，沥青的横向洒布精度≤±4%，可以达到国家相关标准中的优级标准；同步碎石封层设备还可以根据不同洒布量情况下的流量需求，采用不同通径的喷嘴进行喷洒，提高沥青洒布精度。

According to analyzing for the existing three- impulse control system, using the theory of information cluster and syzygium, and according to the characteristic of neural network kind fuses, we have established a theoretical model of syzygium and clustering control of three-impulse water level movement course.

本项研究就是根据锅炉水位控制综合、复杂、困难的特点，并通过对现有的锅炉三冲量水位控制系统进行分析，采用信息聚类融合理论，依照神经网络自身的特点，建立了一个锅炉三冲量水位变动过程的聚类控制的理论模型。

Based on an analvsis of the aerodvnamicnoise source and its theoretical moddf of thelow pressure axial flow fan,and with the theory of the boundary layer and the aerodynamictheory of peripheral control inside the turbomachine blade,a new peripheral control methodwith additional guide vanes fitted on the blade surface is preposed.

在分析轴流式风机噪声源及其理论模型的基础上，应用叶轮机械叶片内部绕流控制的气动理论与边界层理论，提出了设置在工作轮叶尖与沿叶高上、中、下后缘处的附加导叶装置，以控制叶尖间隙噪声与沿叶高出口尾迹涡流噪声。

This concept implements scientifically from the ex-training theory inbreathed to the psychological guidance psychological consultation psychological control and psychological training during the training to the feedback measured and transferred.

认知调节训练理论&的实施结构科学合理，从训练前的理论灌输到训练过程中的心理指导、心理咨询、心理控制、心理训练，到训练结束后的心理反馈调节与迁移，&认知调节训练理论与整个运动队训练过程紧密相关，对训练过程中焦虑的控制克服呈现系统化的特点。

Through theoretic reckoning and simulating analyzing, several control strategies for shunt APF were compared and chose ip-iq arithmetic ofthe instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. Based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. Two topologies of main circuit were compared and chose the three-phase voltage-source converter with a split-capacitor as its main circuit structure. The numerical scales of the dc side capacitor and inductance of reactors were calculated. The high-pass filters were designed to eliminate effectively the highfrequency harmonics produced by APF.

通过理论计算和仿真分析，比较了并联型APF的几种控制策略的优点和缺点，从中选择瞬时无功理论控制策略i_p-i_q计算方式为指令电流产生的算法，并在此基础上增加了抑制系统谐振和平衡直流侧电容电压的控制；比较了并联型APF主电路的两种常见形式，从中选择了三相电压型变流器的主电路形式；算出适合该APF的直流侧电容和出线电感的参数；设计出能有效消除APF产生的高次谐波的高通滤波器。

The conclusion established some ways to improve the credit risk management such as optimize the national-owned enterprises and commercial banks operation structure; establish new relationship between banks and corporations; optimize bank's internal control system; balancing corporate financing ways, eliminate corporate over-dependency on bank's credit assets, and remove information asymmetric contributed by credit sales.

本文在分析和评述国内外银行信贷资产安全性相关理论的基础上，对银行信贷资产安全性与流动性、盈利性之间的关系、信贷资产安全性的概念、分类进行了界定和分析，在对影响商业银行信贷资产安全性共性因素和我国信贷资产安全性现状进行深入剖析的基础上，紧密结合中国银行业的实际，结合信息经济学、行为金融学的有关理论从产权制度、公司治理结构、融资行为、投资行为、内部控制等方面深入分析了借款企业行为、商业银行行为、政府行为及社会信用环境对信贷资产安全性的影响机理，特别是重点分析了信息不对称条件下商业银行信贷资产安全性生成机理，较系统、全面地论述了影响我国商业银行信贷资产安全性的特殊因素，并运用logistic等统计方法进行信贷资产安全性判别进行了实证研究，构建了我国商业银行信贷资产安全性判别模型，最后在此基础上提出了不断健全完善公司治理结构，树立市场化的新型银企关系；完善商业银行内部控制制度，强化内控执行机制；优化企业融资模式，降低企业对商业银行信贷资金的过度依赖；有效缓解商业银行信贷经营活动中面临的信息不对称程度等加强商业银行信贷资产安全性管理和控制的措施与建议。

Pure stimulus-driven capture and contingent capture are two main theories on attentional capture by now, in which, theory of pure capture more emphasize bottom-up control, while theory of contingent capture more emphasize top-down control.

在已有的注意捕获理论中，有条件注意捕获理论更强调自上而下的加工控制，而纯粹注意捕获理论更强调自下而上的加工控制。

It analyzes the Internet opinion and its control thoroughly and systematically using the technical routine from generalities to peculiars, from theory to practice, from periphery to crux, from current situation to question, again to solution in the hope of making up for the omissions and deficiencies of present relative research achievements on the Internet opinion and its control, of adding to, developing, making perfect it on the basis of succession, and trying to design a train of thought combining generality and personality and operated easily for the social control on the Internet opinion.

即采用从一般到具体、从理论到实践、从外围到内核，从现状到问题再到解决方案的技术路线，对网络舆论及其控制问题进行较全面、系统地分析，以期对目前已有相当研究成果和基础的网络舆论及其控制研究拾遗补漏，对原有理论在继承的基础上补充、发展、完善，并试图为网络舆论的社会控制设计一条共性与个性相结合，具有较强可操作性的思路。

The mainly learnning is low-voltage apparatus、three phase asynchronous motor and electric control wiring of DC Motors、Principle and control of stepper motor and control wiring of typical electric machine、basic theory and basic methods of machine equipment electric control、 basic control circuit of electric control system、analysis of typical electric machine control System、basic principles and methods used of PLC、design and debug of machine tool control system、 design of electrical control gear etc.

主要学习常用低压电器、三相异步电动机和直流电动机的电气控制线路、步进电动机工作原理及控制以及典型机床电气控制线路、机床设备电气控制的基本理论和基本方法、电气控制系统的基本控制电路、典型机床电气控制系统分析、可编程序控制器的基本原理及使用方法、机床控制系统的设计和调试、电气控制装置设计等内容。

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％。