電車空調系統變頻器計算機模擬程序的設計

電氣工程論文編號:DQ106   論文字數:18927,頁數:46

目  錄
摘  要 II
1  緒論 1
2  系統總體設計介紹 2
2.1  汽車空調的工作原理 2
2.2  系統功能介紹 2
2.3  系統硬件結構 3
2.4  空調操縱器 3
2.4.1 功能 3
2.4.2 技術參數 4
2.4.3 操作按鍵與顯示說明 4
2.4.4 空調操縱器電氣接口定義 5
2.5  關于空調系統的保護 5
2.5.1 蒸發器溫度過低保護 5
2.5.2 制冷系統壓力保護 5
2.5.3 空調系統制冷重新啟動延時保護 5
2.5.4 其它功能 6
2.6  故障代碼 6
3  Modbus通信協議 7
3.1  Modbus協議簡介 7
3.1.1 在Modbus網絡上轉輸 7
3.1.2 在其它類型網絡上轉輸 7
3.1.3 查詢—回應周期 8
3.2  兩種傳輸方式 9
3.3  Modbus消息幀 10
3.4  錯誤檢測方法 12
3.5  Modbus功能碼 14
3.6  通訊變量表 18
4  AD200A/B變頻器 19
4.1  AD200A/B變頻器簡介 19
4.2  串口通行協議 19
4.3  模塊化結構 20
4.4  簡便易用設計 20
4.5  變頻器與操作器的連接應用 20
5  Vb語言 24
5.1  VB編程程序的基本思路 24
5.2  VB程序的特點 24
5.3  串口通信控件 25
5.4  vb編程的CRC校驗 26
5.5  vb編程的模擬變頻器 27
5.6  vb環境中模擬變頻器控件和它所對應的程序 28
6  總結 39
附錄  模擬變頻器的操作界面圖 42

摘  要
 近年來，隨著私家車數量的急劇增加，道路擁擠狀況日益加劇，越來越多的人選擇城市公交客車作為他們的出行代步工具。城市公共交通在我國城市交通中占有重要的地位,是同我國城市居民生產、生活等活動密切相關的系統，而空車的空調系統好壞直接關系到乘客在乘坐時的舒適性。隨著國內客車行業的發展，對空調系統的要求日益提高。作為空調系統核心控制部件，對控制器的性能也提出了更高的要求。不僅要求其工作可靠，而且要求外形美觀，人機界面友好。Modbus協議是應用于電子控制器上的一種通用語言。通過此協議，控制器相互之間、控制器經由網絡（例如以太網）和其它設備之間可以通信。它已經成為一通用工業標準。有了它，不同廠商生產的控制設備可以連成工業網絡，進行集中監控。AD200A/B 系列通用電機驅動器將通用變頻器的強大應用功能、使用的方便靈活與伺服驅動器的高性能(高精度、高速動態響應、高過載能力)、強大的位置和轉矩控制能力進行了深度融合，使它具有比常見伺服驅動器更加廣泛的應用領域和更加靈活的操控自由度。也解決了通用變頻器由于調速精度低、轉矩響應慢造成的應用障礙。
 
關鍵詞：操縱器，modbus協議，AD200A/B系列變頻器

Abstract
In recent years, With the number of private cars increased dramatically, road congestion increased dramatically,more and more people select a city bus as their travel tools .Urban public transport in urban transport in China occupy an important position , It has urban residents with the production, life and  other activities closely related to the system , and the bus air-conditioning systems have a direct bearing on the passengers in comfort. With the development of domestic industries bus, the demand of air-conditioning systems is increasing. As air-conditioning systems core components control, the performance of the controller also has a higher demand. Its work requires not only reliable, but also for the aesthetic appearance, HMI friendly.Modbus protocol is used in the electronic controller of a common language. With this agreement, each controller, the controller through the network (such as Ethernet) and other communication devices can be. It has become a common industry standard. With it, the production of different vendors can not even control equipment into the industrial network, centralized control. AD200A / B Series General Electric will drive a powerful general inverter applications, the use of the flexibility and convenience of high-performance servo drives (high-precision, high-speed dynamic response, high Guozainengli), a powerful position and torque control capabilities The depth of integration, it has frequently than the servo drive more wide-ranging applications and more flexible control of the degree of freedom. GM has also solved the inverter due to low precision speed, torque caused by the slow response to the application of obstacles.

Keywords：Controller，modbus agreement，AD200A / B Series Inverter