【正文】 ................................................................... 2 2 橋式起重機(jī)的控制 ...................................................................................................................... 3 橋式起重機(jī)的主要結(jié)構(gòu)及運(yùn)動(dòng)形式 ................................................................................... 3 傳統(tǒng)橋式起重機(jī)的控制原理 ............................................................................................... 4 傳統(tǒng)橋式起重機(jī)控制系統(tǒng)的缺點(diǎn) ....................................................................................... 5 控制方案的 設(shè)計(jì) ................................................................................................................... 5 3 橋式起重機(jī)控制系統(tǒng)的硬件設(shè)計(jì) ............................................................................................. 6 系統(tǒng)硬件設(shè)計(jì) ....................................................................................................................... 6 PLC 實(shí)現(xiàn)的主令控制器 ....................................................................................................... 6 電機(jī)的選用 ........................................................................................................................... 7 變頻調(diào)速對(duì)電動(dòng)機(jī)的要求 ............................................................................................ 7 變頻起重機(jī)系統(tǒng)中電動(dòng)機(jī)的選型 ................................................................................ 7 計(jì)算及電機(jī)的選取 ........................................................................................................ 8 變頻器 ................................................................................................................................. 10 變頻器選型 .................................................................................................................. 10 變頻器的主電路 .......................................................................................................... 10 變頻器的控制電路 ...................................................................................................... 11 變頻器選擇及電流驗(yàn)證 .............................................................................................. 12 變頻器主要參數(shù)設(shè)置 .................................................................................................. 13 制動(dòng)電阻的選擇 ................................................................................................................. 14 可編程控制器 ..................................................................................................................... 14 可編程控制器的概述 ................................................................................................... 14 可編程控制器選型 ...................................................................................................... 15 I/O 端口分配 ................................................................................................................. 16 PLC 系統(tǒng)接線(xiàn)方式 ....................................................................................................... 17 安全 措施 ............................................................................................................................. 18 4 系統(tǒng)軟件設(shè)計(jì) ........................................................................................................................... 19 主程序 ................................................................................................................................. 19 公用程序 ............................................................................................................................. 20 全套設(shè)計(jì)（圖紙）請(qǐng)聯(lián)系 174320523 各專(zhuān)業(yè)都有 大車(chē)控制程序 ..................................................................................................................... 23 其他子程序設(shè)計(jì) ................................................................................................................. 25 5 結(jié)論及展望 ............................................................................................................................... 28 結(jié)論 ..................................................................................................................................... 28 展望 ..................................................................................................................................... 28 致 謝 ........................................................................................................................................... 29 參考文獻(xiàn) ....................................................................................................................................... 30 全套設(shè)計(jì)（圖紙）請(qǐng)聯(lián)系 174320523 各專(zhuān)業(yè)都 有 1 緒論 橋式起重機(jī)的簡(jiǎn)介 在工業(yè)生產(chǎn)中廣泛使用各種起重機(jī)械，對(duì)物料作起重、運(yùn)輸 、裝卸和安裝等作業(yè)， 廣泛應(yīng)用 在 工礦企業(yè)、車(chē)站、港口、倉(cāng)庫(kù)、建筑工地等部門(mén)。 關(guān)鍵詞 ：橋式起重機(jī)；變頻器；可編程控制器 全套設(shè)計(jì)（圖紙）請(qǐng)聯(lián)系 174320523 各專(zhuān)業(yè)都有 Abstract Bridge crane is the mechanical production of the most monly used as a hoisting machinery, plays a very important role in the process of production. So to improve the efficiency of bridge crane, ensure the security operation process and reduce cost of production is very important. Traditional bridge crane is used monly on reuse of wound rotor asynchronous motor drag munication. Hoisting mechanism and operational mechanism on the motor rotor series resistance speed control mode is generally adopted. But this way of speed regulating operation plexity, poor reliability, failure rate is high, and the power waste, low efficiency. With the rapid development of control technology in recent years, we can according to the above problems existing in the bridge crane control system, the programmable controller and frequency converter is applied to the bridge crane control system, and has carried on the detailed design. This design is mainly discussed the improvement of the programmable controller (PLC) and inverter bridge crane control system. And expounded the basic principles of PLC and frequency converter control. Adopting Siemens S7200 PLC system, can control