A Study of Theoretical Analysis and Simulation of New-type of High-pressure Air Compressor

空气压缩机在机械、国防、航空、化工、石油、矿山、工农业等各个领域得到广泛应用。在航空领域应用的压缩机有严格的空间限制要求，一般的活塞式压缩机已经不能满足需要，因此，研制气压高、体积小、工作性能稳定的新型压缩机迫在眉睫。 本课题得到我国某飞机装备公司的项目资助，主要以新型十字滑块空气压缩机为研究对象。该新型压缩机充分利用余隙容积高压气体压力，改变以框架与活塞刚性连接的传统方式，采用活塞与滑块直接接触的柔性连接方式，因此，没有框架形成的滑道，整个结构更加紧凑，体积更加小型化。 首先，本文对新型压缩机的结构和工作原理进行研究；建立了新型滑块机构的力学模型，包括各级气缸气体压力、往复惯性力、旋转惯...The air compressor is extremely widely applied to various fields, including the machinery industry, national defense, chemical engineering, oil industry, mining industry, agriculture and industry. General piston compressor can not satisfy requirement due to the strict space restrictions requirements of the compressor applied in aviation field. Therefore, it is urgent and important to study a new t...学位：工学硕士院系专业：物理与机电工程学院机电工程系_机械设计及理论学号：1992008115294

Design and Application of Pneumatic-feeding Control System Based on PLC

设计了基于PlC的气动送料控制系统,阐述了该系统的构成和控制原理,给出了硬件选型和软件设计流程图。该控制系统的应用效果好,成本低廉,生产效率提高。A control system of pneumatic feeding mechanism based on PLC is designed in this paper.The principle and structure of the control system are analyzed in detail and hardware selection and software design scheme are given.The control system has the advange of good effects,low cost,saving manpower cost and improving the production efficiency

Design and thermal analysis of high performance MEMS capacitive pressure sensor

为了进一步提高接触式电容压力传感器的性能,设计了一种高性能双凹槽结构的接触式电容压力传感器,并对该传感器在高温环境中的总体性能进行了分析。推导了热传导和热弹性理论,并对影响传感器热分析的各个因素与温度的依赖关系进行了描述;在整个分析过程中,使用AnSyS软件并结合有限元方法对全尺寸传感器的热效应进行模拟。结果表明,在接触工作状态双凹槽接触式电容压力传感器的温度对输入(压力)-输出(电容)特性的影响是线性的,且线性范围内初始压力随温度的升高而降低;当温度载荷为550 k时,双凹槽结构的灵敏度为1.21x10-6Pf/PA,比传统单凹槽的0.8x10-6Pf/PA高出50%,表明该压力传感器有着非常优异的高温特性。To improve the high temperature properties of touch mode capacitive pressure sensors,a Double-cave Touch Mode Capacitive Pressure Sensor(DTMCPS) is proposed and its overall performance in high temperature environment is analyzed significantly.Firstly,the theories of heat transfer and thermo-elasticity are deduced,and effects of many temperature dependence factors on thermal analysis of this sensor are described.Then,Finite Element Method and ANSYS software are used to simulate the thermal effect of the full dimension sensor during this analysis.The results indicate that the influence of temperature on the input(pressure load) and output(capacitance) characteristics is linear in a touch operation state of this DTMCPS,and its initial pressure of linear range reduces with temperature increasing.Furthermore,the sensitivity of double-cave structure sensor is 1.21×10-6 pF/Pa at 550 K,which has been 50% up on 0.8×10-6 pF/Pa of the traditional single-cave structure.These results show that this sensor has excellent high-temperature performance.国防军工科研资助项目(No.XDTH2009232A

Research and Simulation of Combinatorial Calculation of Combined Balance

分析了组合秤的基本结构,详细阐述了组合秤的两种不同工作原理。进行了基于VISuAl bASIC的组合计算仿真程序设计,对组合秤不同组合计算模型进行了仿真,并对仿真结果进行了分析。The basic structure and working principle of combined balance was introduced and analyzed.The simulation program of combinatorial calculation was programmed with Visual Basic; simulation of different combinatorial calculation model of combined balance was carried out; and the simulation result was analyzed

Design and Realization of Pneumatic Automatic

设计一种气动自动送料系统,介绍了该系统的构成和工作原理,阐述了气动回路和电气回路的设计。该系统采用PlC-人机界面的控制方式,实现了送料的自动化,节约了大量人工成本,可应用于相关加工机床。A pneumatic automatic feeding system has been designed in this paper.The principle and consisting of system are analyzed,and the designs of pneumatic circuit and electrical circuit are described.The control method of PLC and human-machine interface is used.It realizes automatic feeding and saves a lot of labor costs,can be applied to the relevant processing machines

Experimental Analysis of Control Systems for Pneumatic Flexible Fixture

介绍了气动柔性夹具控制系统的相关实验及数据分析,详细阐述了实验目的、步骤及结果,并通过实验论证了该控制系统完全可以满足气动柔性夹具的工作要求。In this paper,we introduced the experiment-control system of pneumatic flexible fixture,the main experimental steps and data have been analysed in details.Through the different kinds of experimental data demonstrating the control system is fit for the requirement of practical work