控制理论

Firstly two theoretical basis of Direct Torque Control technique are researched----Field Acceleration Method and instantaneous space vector theory.

首先探讨了直接转矩控制技术的两大理论基础──磁场加速方法与瞬时空间矢量理论。

E. , large volume of instantaneous flow and fast speed of switch with continuous regulation and lower cost.

针对快压射压射控制的特殊要求，提出一种开关阀和电液比例阀并联的混合式快压射速度控制阀结构，理论证明它可以满足快压射速度控制中瞬时流量大，开关速度快，而且能够连续可调、成本低廉的要求。

A standard control chart based on probability integral transform theory is given, which can be used to control process mean and variance efficiently in the low volume manufacturing.

用概率积分变换理论，给出了控制过程均值、过程方差的标准化控制图，适用于小批量生产环境下对过程均值、过程方差的有效控制。

Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.

通过一系列普通电火花加工与混粉电火花加工的对比实验，运用工艺实验和理论分析相结合的方法，重点做了以下工作：(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因，并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理；(2)以混合硅粉的电火花加工为例，实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律，并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据；(3)在实际加工中，由于粉末的加入使放电间隙变大，这使得混粉电火花加工的尺寸精度难以控制，本文利用三元线性回归的方法，在实验数据的基础上，建立了两种电火花加工过切量的计算公式；(4)将正交试验法应用于混粉电火花加工实验研究，并通过对实验指标极差的直观分析，得出各电参数对加工指标影响的敏感程度。

Such as dynamic model, parameters estimation, interposition, application steps and so on.

第五章，小批量生产过程中的使用统计质量控制方法所面临的突出问题是如何充分利用有关过程的信息（包括客观的历史数据和主观的经验与判断），本章提出了应用贝叶斯预测理论的动态质量控制方法，详细研究了这一方法的动态建模、参数估计、模型干预及实施步骤，进行了计算机仿真试验和应用研究。

In chapter 4, we extend form sole individual to group and comprehensive equilibrium. We can observe the result of information controlling from group's standpoint and we can also analyze the correlation between different agent's information strategy in a complex game model where exist both intrapersonal and interpersonal games.

第四章基于第三章个体分析的结论，将研究角度扩展到多个主体，首先从群体层面观察主体信息控制行为的后果，然后通过一个内、外博弈并存的理论模型讨论了均衡状态下不同主体的信息控制策略以及彼此的相关性。

Based on the optimized solution of inversion problem,the information inversion theory was taken for inversing the blasting parameters of highway tunneling.

在研究逆问题优化解的基础上，将信息化反演理论引入到隧道爆破开挖的控制参数反演问题中，建立隧道围岩控制爆破参数的反演模型。

Except for Tibetan Plateau and its surrounding regions, the results derived from lithospheric isostasy model are closer to observed elevations and consistent with vertical velocities of crustal movement in most tectonic units.

通过对均衡状态分析，我们得到以下主要结论：(1)构造稳定地区均衡程度较高；(2)青藏高原及周边造山带现今地壳运动主要为区域构造过程及深部动力学过程所控制，均衡调整过程不是主要控制因素；(3)现今地壳垂直运动比较明显的块体处于均衡调整阶段，地表垂直运动的大小反映了该区所受的均衡力作用的程度；(4)构造稳定地区基于岩石层均衡的理论计算海拔与观测海拔之差值和现今地壳垂直运动速率有较好的相关性，据此我们可以通过均衡分析研究构造块体的运动趋势和动力学性质；(5)地慢热结构对现今地形、海拔及地壳垂直运动有显著影响，在处理均衡问题时，地慢岩石圈热结构是我们必须考虑的重要因素。

Secondly, two kinds of robust adaptive control algorithms are put forward by making use of the normalization method and recursive least squares estimator with adequate adaptation freezing.

第二章讨论结构不确定系统的完备描述问题，在此基础上，首次建立了鲁棒自适应控制问题的一般提法，并提出了控制系统定性-定量建模理论与方法。

Next, combining robust stability concept, T-S fuzzy model approach, and model predictive control strategy, at each sampling time, the predictive state feedback controller is calculated by minimizing a least upper bound for MPC infinite horizon objective function.

其次，结合强健稳定性理论，T-S模糊模型技术，和模型预测控制策略，在每一个取样时间，透过极小化模型预测控制之无限水平目标函数的最小上界，可计算出预测状态回授控制器增益。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷