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The paper put forward the route of static finite element analysis and structure optimization for the components of hydraulic pressure, performed the static finite element analysis of important components including higher beam, attained the distributing nephogram of stress and strain.

提出了液压机部件静态有限元分析和结构优化的思路，针对上横梁等重要部件进行静态有限元分析，得到应力应变分布云图。

The problem of PI controller design for the multi-input and multi-output system is transformed to that of static output feedback controller design via the new state variable. As to the problem of the static output feedback, a new LMI-based sufficient condition of the controller is presented in this thesis. We can gain the multivariable PI controllers just solving one LMI inequality. The numerical example is provided to illustrate the proposed design approach. 3.The H_∞ robust control is able to solve the multivariable problem, also the control problem characteristic of the modeling error, parameters uncertainties and unknown perturbation, Its application research in the power electronics is beginning now. Considering the characteristics of the PWM DC-DC converters, a multivariable PI controllers which is based on H_∞ Performance Index is designed.

通过构造新的状态变量，可以将多输入多输出系统的PI控制器设计问题转化为静态输出反馈控制问题，利用后者的成熟理论来设计控制器；本文在问题转化后采用更为简便的算法，只需通过求解一个LMI不等式，就能求取基于H_∞性能指标的多变量PI控制器参数，实例验证了算法的有效性。3.H_∞鲁棒控制具有处理多变量问题的能力，可解决具有建模误差、参数不确定和干扰未知系统的控制问题；它在电力电子学中的应用研究刚刚开始。

A multiple-step beams model was established to analyze the static stiffness characteristics of the double parallel four-bar mechanism with right angle flexible hinges based on the symmetry of the structure. Formula for calculating the static stiffness was derived by applying singularity function. On the basis of this analysis, the factors influencing the stiffness performance of the double parallel four-bar mechanism were studied from its geometric parameters, and the theoretical model was verified by finite element method.

根据其结构的对称性建立了静刚度分析的阶梯梁模型，引入奇异函数法推导了柔性双平行四杆机构的静刚度计算公式，在此基础上，分析了柔性双平行四杆机构各尺寸参数对其静刚度的影响，并采用有限元方法对理论模型进行了验证。

In the system of high precision and low speed, Because of the existence of the nonlinear friction, the static and dynamic performance of the servo system is very bad, such as stick slip, hunting, large error and so on, Because the traditional control of PID is hard to solve the nonlinear problem of the servo system, so this paper begins to introduce a new control method which is named adaptive fuzzy PID, It utilizes the rule of the fuzzy control to adjust the parameter of proportion, integral and differential on line, So this control method has some intelligence to improve the static and dynamic performance of the servo system.

在高精度、超低速伺服系统中，由于非线性摩擦环节的存在，使系统的动态及静态性能受到很大程度的影响，主要表现为低速时出现爬行现象，稳态时有较大的静差或出现极限环振荡；由于传统的PID 控制很难解决伺服系统中的非线性问题，因而不能适用于高精度、超低速伺服系统；本文通过引入模糊自适应整定PID控制，利用模糊规则在线调整比例、积分、微分环节，使系统具有一定的智能，从而非常明显的改善伺服系统的静态及动态性能。

In the exploration of ore with CSAMT in mountainous area, various filtering and phase integral method often cannot handle calibration for uneven terrain and local electrical static effect. To develop a new method to eliminate static effect is important for improving the CSAMT data processing and interpretation and application effect.

CSAMT在山区金属矿勘查中，采用各种滤波和相位积分之类的处理方法，校正因地形起伏和局部电性不均匀引起的静态效应，往往难保奏效，开发消除静态效应的新方法是提高CSAMT资料处理与解释水平和方法应用效果的重要研究课题。

The performance of film images can be divided into the performance of static painting lattice and the PHI phenomenon of painting lattices.As for the research on the performance of static painting lattice, it should make reference of the relationship between the sun, and the main body of paternity, the main background of the relations between viewers and painting, the main characters include the size, shape, color, sense of space and so on.

在对静态画格的表现力研究时，根据画框与主体的关系，主体与陪体的关系、主体与背景的关系以及观众与画格的关系，主体本身的性质：大小、形状、色彩、空间感等因素，分别对画格的构图的表现力、景别的表现力、角度的表现力进行研究，把运动镜头整合为两个大的类别，分析了这两类运动镜头的表现性；最后，建立一个模型来论证，一部影片的表现性是在大量的具有表现力画格感应出一个表现力场的过程中完成的。

Combined Pitot tube and static tube that measures total and static pressure; used in aircraft to measure airspeed.

测量总压力和静态压力，把皮托管和静态管组合起来；通常用于航行器的测量。

Combined Pitot tube and static tube that measures total and static pressure; used in aircraft to measure ''.

测量总压力和静态压力，把皮托管和静态管组合起来；通常用于航行器的测量。

PITOT STATIC TUBE, A tube facing the airstream which measures ram and static pressure. Used by airplane instruments.

总静压管，开口面对气流以量取空气的总压和静压，供飞机仪表使用的管道。

Conventional design and analysis of gun system are based on three assumptions of plane, symmetry and static equilibrium, and it is really a static analysis method. However, the consistency between theoretic analysis and experimental results cannot satisfy us despite that varieties of correctional coefficients are introduced.

传统的火炮设计和分析均基於"平面、对称和静平衡"三个基本假设，实际上是一种静态的分析方法，尽管在工程实践中引人了多种经验符合系数，但是火炮分析结果和试验的一致程度不能令人满意。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。