The differential locks by the compressed air in cylinder pushing joint sleeve.
差速锁的锁止是通过气缸压缩空气推动接合套实现。
Coulomb yield-law is used to determine elastic and plastic limiting load of thick cylinder and thick sphere in strength-differential material.
本文利用库仑屈服准则，研究了拉压异性材料厚壁圆筒和厚壁球壳的弹性极限载荷和塑性极限载荷，得出了新的结果和结论。
In this paper, the principle of variable speed pump control hydraulic differential cylinder is designed, and the simulation model of system is built, and the simulation research is carried out.
给出了采用变转速泵控闭式回路控制差动缸的原理，建立了该系统的数学模型，进行了计算机数字仿真研究。
To solve the nonlinear problem of electro-hydraulic servo system, the article uses nonlinear differential geometric theory and adaptive model following control and establishes the nonlinear discrete reference model of non-symmetrical valve-control cylinder servo system. Dynamic feedback linearization was realized with the help of affine transform nonlinear feedback adaptive control of the model. Analysis and simulations show that the output of reference models can be followed exactly by the controlled plants when using the proposed AMFC scheme in electro hydraulic servo systems, high precision. It can be used other electro-hydraulic servo system, and will become very practical value nonlinear control methods.
论文针对电液伺服系统非线性难以控制的难题，将非线性状态反馈微分变换和模型跟随自适应控制结合，通过建立阀控非对称缸位置伺服系统的离散非线性参考模型，借助于仿射变换实现了对非线性电液伺服系统的动态反馈线性化，通过仿真说明 AMFC 在电液伺服系统能够准确跟随参考模型的输出，精度较高，说明 AMFC 通过与仿射非线性变换相结合将其扩展到电液非线性系统，将成为一种对液压伺服控制系统极有实用价值的非线性控制方法。
The design mainly works on many factors which effecting the volume efficiency of fracturing pump. These factors are working conditions of the pump, imbibitional valve, expulsive valve, clearance volume, sealing property, condensability of influent, liquid leakage and elastic defletion of pump cylinder. Based on these facors, we should induce the efficiency expression, famulate differential eguation and emulational mathematical model of fracturing pump.
本设计主要针对影响压裂泵容积效率的因素如：泵的工作情况、吸液阀结构参数、余隙容积、密封性能、液体的可压缩性、液体泄漏、泵缸的弹性形变等方面进行分析，在此基础上导出效率的表达式，建立微分方程，并建立压裂泵效率仿真的数学模型。
Based on the work mentioned above, the mathematical model of servo loading system of symmetrical valve controlled asymmetrical cylinder, and the mathematical model of hydraulic inherent part of servo loading system with differential pressure feed-back compensation are set up.
多通道伺服加载系统的液压执行元件通常都是对称阀控制非对称缸，它的加载特性与对称阀控制对称缸有明显的差异，有关这方面研究的文献和资料较少。
1Steam turbine in Dalate Power Plant is detailed, and the way to solve the big negative differential expansion is found through the analysis of big negative differential expansion of high pressure cylinder in this pa-per.
对达拉特电厂1号机组胀差的设计给予详尽说明，并通过对高压缸负胀差大的现象进行分析，找出解决负胀差大的方法，对防止主设备损坏及预防同类机组的事故发生有参考价值。
Based on lubrication theories of piston ring and cylinder liner researched mainly, the lubrication model that considered solid particle influencing lubrication of piston ring and cylinder liner was established, and then numerical solution method was introduced to solve the model of second-order partial differential equation.
第三章，研究了固体颗粒对表面的作用数学模型，提出了一种针对固体颗粒的颗粒-表面接触数学模型，该模型考虑了弹性、弹塑性和塑性三种变形状态和在三种变形状态转化临界点的变形连续性和光滑性。
The new model is a first-order ordinary differential equation group for the fluid pressure in the cylinder...
该方程是关于液缸内液体压力、泵阀升程与泵阀运动速度的一阶常微分方程组。
The differential equations of the system formed by a homogeneous cylinder and a non-fixed inner semicylindrical surface arc derived.
均质圆柱体或球体在固定半圆形柱面内的微振动问题常常出现在一些理论力学教材[1—3]中。
Numerical results for perfectly conduction and homogeneous penetrable circular cylinder are presented and compared with the solutions by using second-order differential operator B2 type absorbing boundary condition.
本文使用这种边界条件对理想导电及均匀电磁可穿透材料圆柱散射体的表面场进行了数值计算，并与使用二阶微分算子B_2型的吸收边界条件的结果作了比较。
It talks about an analysis method of interference fitting stress static limited element and takes thick cylinder interference fitting as an example to make theory calculation and limited element simulation calculation, describes the basic notion of buoyancy mechanics, and the basic assumption of buoyancy, including the development of differential equation expressed by pole coordinates, stress function expressed by pole coordinates and consistent equation, definition of symmetric axe stress and the development for its formula, the development for the formula which is for the cirque or cylinder with homogeneous press, and the course and results of analysis for the board.
提出过盈配合应力静态有限元分析方法，并以厚壁圆筒过盈配合为例进行了理论计算和有限元仿真计算，介绍了弹性力学的基本概念、基本假定。包括极坐标下的平衡微分方程的推导，极坐标中的应力函数与相容方程的推导，对称轴应力的定义及推导，圆环或圆筒受均布压力的应力函数的推导，以及对过盈配合的厚壁圆筒进行应力分析的过程及结果。
The quasi-dimensional combustion model is used in cylinder, and the differential equation groups are solved with Runge-Kutta method.
可以认为对该类机型建立的模型和所采用的计算方法是正确的，可以用于该类机型和相似机型的进一步研究。
Differential pressure method applying on air tightness for brake master cylinder of automobile
差压检测法在汽车制动主缸气密性检测中的应用
The working principle and structure of3-cylinder hydraulic confined piston engine (HCPE) is put forward, and the working process differential equations is constructed.
阐述了三缸机械液压约束活塞发动机（HCPE）工作原理，建立了系统工作过程的微分方程。
This paper analyses the differential control circuit of hydraulic pressure cylinder and its parameter, and works out the ratio of piston and the diameter of piston pole according to the requirement of speed rate.
分析了液压缸差动控制回路的型式和参数，并按速比条件导出了活塞与活塞杆直径的比值关系。
Research is carried out on the electro-hydraulic control system based on AC servo motor and constant pump used in plastic injection model machine. Three types of flow control principle are analyzed and compared. The principle to control the differential cylinder with pump closed loop is also investigated.
对采用伺服电动机、定量液压泵闭环驱动的注塑机电液控制系统进行了研究，分析了泵输出流量控制原理、泵控差动缸回路原理。
By using the analysis solution of differential equations based on thin shell theory, the stresses in pressurized long cylinder or piping stiffened with stiffeners were analyzed.
对用加强环加强的受压长圆筒或管道应用薄壳力矩理论微分方程的解析解求解加强圆筒中的各项应力。
The new model is a first-order ordinary differential equation group for the fluid pressure in the cylinder, the lift of the pump valve and the velocity of the valve.
该方程是关于液缸内液体压力、泵阀升程与泵阀运动速度的一阶常微分方程组。
Principle and application of differential cylinder system controlled with displacement pump, accumulator and proportional valve
变量泵、比例阀和蓄能器复合控制差动缸回路原理及应用