The factors that impact the effect of secondary coagulation are investigated , such as the species of coagulant , the proportion and concentration of adding coagulant , ph and so on , and the author finds out the optimal conditions and provide the control parameters for engineering practice 实验还对影响二次凝聚效果的因素，如凝聚剂种类、加药比例、加药浓度、 ph值等进行了研究，找出了二次凝聚工艺的最佳控制条件，为该工艺的操作实施提供了控制参数。
In dtc system , the concept of space vector is introduced to analyze and control the ac motor , the electromagnetic torque and flux are calculated and controlled in the stationary coordinate , and the optimal pwm gating signals are generated to control the inverter to acquire high dynamic torque according to the output of the bang - bang regulators 直接转矩控制采用空间矢量的概念来分析三相异步交流电动机的数学模型和各物理量，直接在静止坐标系下计算与控制交流电动机转矩和磁链，借助于离散的两点式调节产生pwm信号，直接对逆变器的开关状态进行最佳控制，以获得转矩的高动态性能。
Specially we discuss and analyze the theory of linear quadratic gaussian control and the theory of implementing the stability of a uncertain time - delay system which include in the theory of robust control , and deduces some theories in detail , and gets the using method of the two theories in the actual systems . in this paper we first discuss and analyze the uncertainty of the macroeconomic system by the theory of linear quadratic gaussian control , and try to avoid the effect of the modeling error in system and the disturbed signal from the system and outside 本文主要研究了处于控制理论中的鲁棒控制理论，其中重点研究与分析了线性二次型高斯控制理论和时滞不确定系统的鲁棒稳定理论，对其进行了一定的理论推导，并得出了这两种控制理论在实际系统中的运用方法。本文首先运用线性二次型高斯控制理论对宏观经济系统进行了分析和控制，力求消除或减少系统中的模型化误差及其本身和外部的扰动信号等不确定性的影响，并借助matlab设计软件进行仿真，以得出最佳控制策略。
This paper aims at the uncertainty of the macroeconomic systems and atmospheric pollution system which is analyzed and controlled by the theory of linear quadratic gaussian control and the theory of h control , and avoids the effect of the modeling error in systems and the disturbed signal from the system and outside 本文针对宏观经济系统和大气污染控制系统模型的不确定性，分别运用线性二次型高斯控制理论和h _ 。控制理论进行宏观经济系统和大气污染系统的的分析与控制，消除系统中的模型化误差及其本身和外部的扰动信号等不确定性的影响，借助matlab设计软件进行仿真，得出最佳控制策略。
Equation ( 4 ) is said to belong to limit circle type if all solutions of equation ( 4 ) belong to l ~ ( 2 ) ( simply denoted by l . c . ) equation ( 4 ) is said to belong to lagrange stable if all solutions of equation ( 4 ) belong to ( simply denoted by l . s . ) . in chapter 4 , we study criteria for the linear nonhomogeneous differential equation belonging to the limit circle type 方程( ’ )称为极限圆型的，若方程( ’ )的所有解都属于护[ a ， co ) (简记为l . c . ) ;方程( ’ )称为拉格拉日稳定，若方程( ’ )的所有解均属于lco [ a ， co ) (简记为l . s . ) .由于方程( ’ )解的平方可积性及有界性的研究在微分算子理论、按微分方程的特征函数展开理论以及无界区间上受控系统的最佳控制理论等方面具有重要应用
At the same time , it gave frequency domain and time domain solutions of system equations about two motions on pure rolling and rolling coupled swaying of the ship . based on analyzing the control principle of the anti - rolling tank , the optimal control of controlled passive tank is devised according to the principle of optimal control , and the implementation approach presented . the author also studies the controller design of the activated tank , presents the technique of enumerating tank active force , and simulates the three kinds of tank system 在分析减摇水舱控制机理的基础上，根据最优控制原理，提出了可控被动式减摇水舱的最佳控制，给出了最佳控制的实现方法；研究了主动式减摇水舱控制器的设计及确定水舱主动力的方法；对被动式、可控被动式和主动式减摇水舱系统进行了仿真分析。
The direct torque control theory is a kind of new control method after vector control theory in ac control field . it calculates and controls the torque and the flux of ac electromotor in stator coordinate using the voltage space vector . adopting the stator magnetism field direction method , it recurs to discrete pang - pang control producing pulse width modulation signal and controls the switch state of the transductor when better quality steady - state performance is produced 直接转矩控制技术是继矢量控制技术之后交流调速领域中新兴的控制技术，它采用空间矢量分析的方法，直接在定子坐标系下计算并控制交流电动机的转矩和磁链，采用定子磁场定向，借助于离散的两点式控制产生脉宽信号，直接对逆变器的开关状态进行最佳控制，以获得转矩的高动态性能。
In order to reduce the communication time between the high - speed and low - speed flows in 2d space , and to get the optimum interconnecting control of traffic flow to the highway pavement maintenance , the fluid characteristic parameters are utilized to appraise traffic conflict trend 基于减少高速流和低速流在二维空间上的交汇时间，实现高速公路路面养护与交通流关联最佳控制的要求，应用管道流变特性参数解释高速公路养护作业产生的交通冲突特征，建立了控制施工作业设备与高速交通流的数学模型。
6 . nonlinear h - infinite control based on lp ( p l ) gain stability is being extensively investigated recently . we present a theoretic result , i . e . , put forward an inequality approach , which is different from the usual differential game method , to estimate the best control and the worst disturbance 6 .在有限场( p全1 )增益稳定基础上发展起来的非线性枷控制研究方兴未艾，我们作出了一点理论方面的探讨，给出了一个不同于微分对策的估计最佳控制和最糟扰动的不等式方法
