【作者】 杨帆；

【导师】 杨红；

【作者基本信息】 武汉工程大学 ， 机械电子工程， 2014， 硕士

【摘要】 喷嘴技术广泛应用于国民生产和生活中。喷嘴特性测试是研究、生产和有效利用喷嘴的基础技术手段。针对喷嘴研究的实际需要，基于计算机自动测试分析技术，本文围绕喷嘴性能综合测试平台展开研究。第一，分析了喷嘴常规性能及雾化质量参数，提出了测试平台系统模块结构。系统分为基本循环与测试模块、打击力测试模块、粒径测试模块和喷雾均匀度测试模块等。系统以相互独立的步进电机驱动模块以及变频器系统为控制器，以计算机和工控组态软件为上位机，构建典型的上下位机的多机系统结构。上位PC与数据采集控制卡构成基本的数据采集系统，基于USB接口进行数据通信。多普勒光散射粒子分析系统和PIV流场测试系统分别用于喷雾液滴的粒径测定和喷雾流量分布均匀性测试，分别独立完成测试任务。第二，重点探讨了打击力测试运动平台的控制实现。系统由运动控制器、步进电机驱动器以及托盘执行机构组成，由X、Y两相的步进电机驱动两副滚珠丝杠机构，带动托盘按预设的步进增量做“阶梯”运动以拟合直线，实现喷射全区域的冲击力测试。控制器接受数据采集控制卡的开关键值信号，受上位机控制，共同完成测试台的定位运动控制和打击力的测试任务。第三，基于MCGS组态环境构建了上位机软件系统，可实现系统流程模拟、常规参数测试、喷射角计算、变频器定压控制、打击力平台运动控制等功能。初步探讨了基于PIV技术测试喷雾流量均匀性的设想，并给出了测试实例。更多还原

【Abstract】 Nozzle technology is widely used in national production and life.The test of nozzlecharacteristics is the basis of technical means to develop research, production and effectiveuse of nozzle. For the actual needs of nozzle research,the purpose of this paper is to studyaround the nozzle performance integrated test platform based on computer automatic testanalysis.Firstly, the conventional performance and atomization quality parameters is analyzedand a testing platform module structure is proposed.The system is divided into fourparts:basic cycle and test module,strike force test module,particle test module and sprayuniformity test module.The system regards independent stepper motor driver module andinverter system as controller and regards computers and industrial control configurationsoftware as PC,a typical upper and lower machine multi-machine system architecture isconstructed. The basic data acquisition system is constituted by PC and data acquisitionand control cards, the data communication is based on USB interface.Doppler lightscattering particle analysis system and PIV flow field measurement system are used todetermine spray droplet diameter and test spray flow distribution uniformity.Secondly, the achievement is focused on the control of striking force test campaignplatform.The system is consisted of motion controller, stepper motor drive and trayactuator. The X, Y two-phase stepper motors drive two pairs of ball screw mechanismdrives tray by default stepping increment to"ladder" to fit a straight line movement. Thetest of strike force in regional jet is accomplished.The controller accepts the signal ofswitch key from data acquisition and control card and it is controlled by PC.Through this,the task of positioning the test bench and testing the strike force is accomplished.Thirdly, a PC software system based on the configuration environment MCGS isconstructed.The system can achieve process simulation for system,testing ofconventional parametric,calculating of spray angle,controlling the inverter under theconstant pressure,controlling the motion of the strike force platform,testing the pressure sync and so on. The idea of testing spray flow distribution uniformity based on PIVTechnology is preliminary discussed and a practical example is given.更多还原