摘要
风机状态测控系统是在风机运转的过程中，实现风机性能基本参数的采集、分析、计算风机性能参数并绘制性能曲线(流量——全压曲线、流量——功率曲线、流量——效率曲线)并通过采集与处理的信号信息对风机的转速的变频调速控制的过程。风机性能试验对于成品的检验和新产品的设计开发都至关重要，特别是对于大型、特型风机以及单件、小批量而且气流特性有特殊要求的情况，性能试验尤为重要。目前，我国风机性能检测大多以手工为主，存在试验手段落后，劳动量大和测试结果不准确等缺点。采用先进的虚拟仪器技术，将传感技术、仪器技术和测试技术结合起来，进行风机性能参数的自动检测，试验数据的自动处理和性能曲线的自动绘制是本文研究的重点。
本文采用虚拟仪器技术，进行了风机性能试验自动测试系统的硬件及软件设计。硬件上在风机机械结构基础上采用压差传感器、压力传感器和扭矩传感器检测各试验数据，实现了试验数据的自动采集;利用变频调速技术控制变频调速器输出信号的频率，实现了风机转速的自动调节。软件上在Labview虚拟仪器开发平台上，采用模块化设计方法，实现了采集信号的实时显示、控制信号的准确输出、试验数据的正确处理及应用最小二乘法对性能参数进行拟合从而实现了性能曲线的自动绘制。整个系统具有界面友好、操作方便、功能齐全等优点，试验结果表明研制基于虚拟仪器的风机性能自动测试系统，增加了试验过程的稳定性，避免了人为的读数误差、计算误差以及相关数据不能同时记录所引起的试验结果的偏差.提高了测试精度和试验效率。可广泛应用于科研院所和风机生产厂家，具有较高的推广与应用价值。
关键词：风机性能；风机测试；风机控制；虚拟仪器；数据采集；Labview。
Abstract
Fan Performance measurement and control system is functioning in Blower in the process of achieving fan of the basic parameters of the collection, analysis, calculated performance parameters and the mapping of fan performance curve (flow – all of pressure, flow – power curve, traffic – the efficiency curve) And through acquisition and processing of signals to the speed of the fan VVVF control of the process. Fan performance test for the finished product testing and new product design and development are crucial, especially for large, special-fan and a single, small volume and flow characteristics of the special requirements of the situation, the performance test is particularly important. At present, China’s Fan Performance testing mostly manual-based, test means there behind, and the labor of inaccurate test results and other shortcomings. Using advanced virtual instrument technology, sensor technology, instrumentation and test technologies, a fan performance parameters of automatic detection, automatic processing of test data and performance of the automatic drawing is the focus of this paper.
In this paper, virtual instrumentation, a fan of automatic test system tests the hardware and software design. Hardware on the use of pressure sensors, pressure sensors and torque sensors detect the test data, and the test data collected automatically the use of Frequency Control Technology Control VVVF output signals in the frequency, the fan speed to achieve the automatic adjustment. In Labview software development platform virtual instrument, the modular design, and the acquisition of real-time signal that the exact output control signals, the test data processing and application of the correct method of least squares fitting parameters to achieve the performance Curve of automatic drawing. The entire system is user-friendly, easy to operate, fully functional advantages, test results showed that the development of virtual machines based on the fan performance automated test systems, to increase the stability of the trial process, to avoid the artificial reading error, error and related data can not be Records of the test results caused by the deviation. Improve the accuracy of the test and test efficiency. Can be widely used in scientific research institutes, and fan manufacturers, and the promotion of high value.
Key words: Fan performance; Fan testing; fan control; virtual instruments; data collection; Labview.
目录
摘要（中文）————————————————————————————-Ⅰ
（英文）————————————————————————————–Ⅱ
第一章 概述————————————————————————————1
1.1 风机简述——————————————————————————–1
1.2 风机测试系统的发展—————————————————————–1
1.3 基于虚拟仪器的风机测试系统—————————————————–1
第二章 系统总体方案的设计————————————————————3
2.1 风机性能测试方法——————————————————————–3
2.2 虚拟仪器技术及其应用————————————————————–5
2.3 风机测试系统的总体方案———————————————————–5
第三章 风机硬件系统的设计————————————————————7
3.1 风机机械硬件总体设计————————————————————–7
3.2 机械结构设计计算——————————————————————–7
3.3 风机转速调节装置的设计————————————–18
3.4 风机测试传感器的设计选用————————————20
3.5 风机测试系统数据采集卡————————————–23
第四章 系统软件的设计—————————————————————–25
4.1 虚拟仪器的硬件系统—————————————————————25
4.2 虚拟仪器的软件系统—————————————————————26
4.3 Labview简介————————————————————————-26
4.4 测试系统主界面的设计————————————————————27
第五章 结束语——————————————————————————29
参考文献——————————————————————————————30
