基于LABVIEW的電機實驗系統的研究和設計

電氣自動化論文編號:ZD462  論文字數:21864,頁數:46，
 目    錄
 
基于labview的電機試驗系統的研究和設計 5
第1章  緒   論 7
第2章  變頻調速控制 9
2.1 基本控制方式及電機工作特性 9
2.1.1 變頻調速的基本控制方式 9
2.1.2  電壓源供電時異步電機的工作特性 10
2.1.3 轉差頻率控制 11
2.1.4  矢量變換控制 14
2.2  艾默生變頻器TD3000 15
2.2.1  艾默生變頻器簡單介紹 15
2.2.2  變頻器操作及簡單運轉 15
2.2.3  變頻器的工作狀態 16
2.2.4  電機參數及其保護 16
2.2.5  輔助功能參數設置 17
2.2.6  轉矩控制方式 17
2.2.7  矢量控制功能 18
2.2.8  V/F控制專用功能 19
2.2.9  開關量輸入輸出端子功能 19
2.2.11  編碼器參數設定 20
第3章  數據采集系統 20
3.1 數據采集的基本概念及基本組成 20
3.2  采樣基本原理 21
3.2.1 采樣定律 21
3.2.2  采樣過程 23
3.2.3  量化過程 23
3.2  模擬量輸入輸出 24
3.3.1  信號處理裝置 24
3.3.2  采樣單元 24

3.3.3  采樣保持 25
3.3.4  A/D轉換器 25
3.4   數據采集卡——PCI2006 25
3.5 傳感器的基本原理和選用 28
3.5.1  LEM電壓電流傳感器 28
3.6  歐姆龍旋轉編碼器 30
第4章  基于虛擬儀器的軟件設計 31
4.1 虛擬儀器發展現狀和前景展望 31
4.2  系統設定和配置 35
4.2.1  濾波設定 35
4.2.2  通道設定 36
4.3  主程序設計和分析 36
4.3.1  前面板設計 37
4.3.2  三相電壓電流采集 37
4.3.3  功率因數和功率換算 37
第5章  電機變頻調速實驗指導書 37
5.1 交流變頻調速裝置參數設定與運行試驗 37
5.2  電動機空載時系統起動、運行、停止試驗 38
5.3  額定頻率下、額定負載下電機頻譜分析 39
小 結 41
致 謝 43

摘 要:本課題是基于LABVIEW的電機試驗系統的研究和設計，其中涉及到美國NI公司所倡導的“軟件就是儀器”的口號。虛擬儀器是一個全新的課題。傳統的電子測量儀器由于其功能單一，體積龐大，已經很難滿足實際工作的需要與傳統儀器相比表現為：功能更強、處理速度更快、頻帶更寬、用途更廣、操作更簡單、體積更小、可擴充性更好。微型計算機的普及程度和性能不斷提高，使得基于PC臺的虛擬儀器系統應運而生。本文論述了基于虛擬儀器概念的信號采集系統的實現方案。使用自主開發的數據采集卡，最終實現了基于PC平臺的，具有頻率計和頻譜分析儀功能的數字存儲示波器系統。由于使用了LabVIEW進行系統的軟件開發，使得本系統具有很好的通用性和靈活性。
 本文軟件方面主要討論在信號采集過程中的數據傳輸、顯示和處理的方法以及實現過程中的關鍵技術，同時根據實驗指導進行編程，調用各種子VI，實現系統的目的。本課題硬件方面由于采用了虛擬儀器，只需要有固定的傳感器，硬件的核心是控制電機的變頻器的設置和控制。本課題有更大的潛力，因為可以利用PCI的模擬輸出對變頻器進行自動控制，實現自動數據采集系統的設計。
關鍵詞：LABVIEW   電機試驗系統  數據采集  虛擬儀器

Research And Design Based On Electrical Machinery Pilot System  Of  Lab VIEW

Abstract :This subject is research and design based on electrical machinery pilot system of LABVIEW, among them involve the slogan that "The software is an instrument " that U.S.A. NI Company advocated. The fictitious instrument is a brand-new subject. The traditional electronic measuring instrument, because its function is single , bulky, already it is very difficult to meet demands of real work and has compared with traditional instrument been shown as: With better function, processing speeds quick, frequency band wide, use wide, operate simple, volume little, expandability better. The popularization degree and performance of the microcomputer are improving constantly, make the system of fictitious instrument based on PC platform arise at the historic moment. This text has described the signal based on concept of the fictitious instrument and gathered the systematic realization scheme. Use the data collecting card of independent development, has realized because of PC platform finally, the figure with cymometer and analysis instrument function of frequency spectrum stores the oscillograph system. Because has used Lab VIEW to carry on systematic software development , has made this system have very good commonability and flexibility .  This text software discuss data transmission, show and method that punish and realize the key technology of the course while the signal gathers mainly, guide and carry on programming according to the experiment at the same time, transfer every kind of sub VI , the purpose of the implementation system. Because this subject hardware adopts the fictitious instrument, only need the regular sensor , the core of the hardware is establishment and control of the frequency converter which controls the electrical machinery. This subject has greater potentiality, because can utilize simulation of PCI to export and automatically control the frequency converter , realize the design of the automatic data collecting system.
Keyword ：LabVIEW   The electrical machinery experiment system data is collected the fictitious apparatus