Abstract
Multiple motors have been used for driving systems widely in recent years to meet the increased requirement of driving systems. In order to improve the dynamic and static performances, and to increase the load ability of the system, the problem of synchronized drive of multiple motors must be taken seriously, thus, the synchronized control of multiple motors is very important. A successful synchronized control scheme must control both the speed and the moment .In this sense, synchronization refers to controlling current and velocities of the motors relative to each other so that they remain well-coordinated.
In case of synchronization for multiple motors, the real time data communication is necessary. In order to satisfy this requirement, the complex signal lines are usually used to detect the speed and current of each motor and to command the desired speed and moment. Such a traditional implementation technique induces many problems in the view of reliability and economy because of the amount and complexity of wiring, noise and maintenance problems, etc. In order to remove these problems, a simple synchronization system with the aid of serial communication using PROFIBUS-DP is proposed in this paper. In this case, inflexible and expensive special wiring is not necessary. Furthermore, the system can be modified in terms of network nodes without changing the wiring.
In this system,this assembly control system takes S7-300 PLC as a master station, through PROFIBUS-DP connect with 4 S7-200 PLC as slave stations, and simultaneously S7-300 PLC must communicate with the human machine interface as well as MM420 through PROFIBUS. PROFIBUS is an international, open, have been widely used worldwide fieldbus. The equipments produced by different manufacturers of the equipment can be communicated without special handling and transformation when using PROFIBUS in the system. Therefore, this design selects the PROFIBUS to be practical, and decrease design cost as well. A S7-200 PLC controls the servo motor, thus by the servo motor control cam gear, so finally satisfies on various manipulators of the automatic assembly machine to act the changing movement. Other 3 S7-200 PLC control 6 stepping motors, thus control the up and down of the assembly machine's six material poles. In addition, S7-300 PLC connects through PROFIBUS with MM420 by the RS-485 interface, to control the start and speed of the large asynchronous motor, which finally makes the automatic assembly machine main dividing plate start, stop and speed. And the other 6 asynchronous motors which used in controlling the six storehouses are controlled directly by S7-300 to start and stop.
Key words:Multi-motor, synchronous control, S7-300 S7-200 Profibus Fieldbus Wincc MM420
目 錄
摘 要 I
外文摘要 III
目 錄 V
第一章 緒 論 1
1.1 多電機(jī)協(xié)同控制研究的現(xiàn)狀 1
1.2 裝配機(jī)研究的現(xiàn)狀 1
1.3 同步控制在裝配機(jī)上的應(yīng)用 2
1.4 PLC的應(yīng)用背景和趨勢(shì) 2
1.5 PLC的應(yīng)用價(jià)值 2
1.6 S7-300的特點(diǎn)及應(yīng)用背景 3
1.7 系統(tǒng)概述和研究方法 3
1.8 論文的設(shè)計(jì)任務(wù) 4
1.9 本章小結(jié) 5
第二章 系統(tǒng)整體方案 6
2.1 S7-300硬件概述 6
2.2 STEP7的編程語(yǔ)言 7
2.3 S7-300與 S7-200的通訊 7
2.4 S7-300的通訊接口 11
2.5 控制系統(tǒng)流水線動(dòng)作細(xì)分 12
2.6 系統(tǒng)總體流程設(shè)計(jì) 17
2.7 初始化巡檢流程圖 17
2.8 S7-300與人機(jī)界面的通信 18
2.9 本章小結(jié) 19
第三章 伺服電機(jī)單電機(jī)控制 20
3.1 伺服電機(jī)軟硬件設(shè)置 20
3.2 S7-300與S7-200的通信約定 20
3.3 伺服電機(jī)的調(diào)試流程圖 21
3.4 伺服電機(jī)的調(diào)試部分程序舉例 21
3.5 本章小結(jié) 23
第四章 異步電機(jī)單電機(jī)控制 24
4.1 大異步電機(jī)控制規(guī)劃 24
4.2 小異步電機(jī)控制規(guī)劃 24
4.3 S7-300與MM420的PROFIBUS-DP通訊 24
4.4 組態(tài) MICROMASTER 4 24
4.5 在MICROMASTER上設(shè)置參數(shù) 25
4.6 使MM420準(zhǔn)備運(yùn)行 26
4.7 由PLC控制MM420 26
4.8 異步電機(jī)控制系統(tǒng)調(diào)試流程圖 27
4.9 異步電機(jī)調(diào)試控制系統(tǒng)程序舉例 27
4.10 伺服、異步聯(lián)動(dòng)調(diào)試流程圖 28
4.11 本章小結(jié) 29
第五章 步進(jìn)電機(jī)單電機(jī)控制 30
5.1 步進(jìn)電機(jī)的概述 30
5.2 步進(jìn)電機(jī)軟硬件設(shè)置 30
5.3 S7-300控制步進(jìn)電機(jī)流程圖 33
5.4 本章小結(jié) 33
第六章 全自動(dòng)運(yùn)行控制系統(tǒng) 34
6.1 全自動(dòng)運(yùn)行時(shí)的控制要求 34
6.2 全自動(dòng)運(yùn)行時(shí)的控制流程圖 34
6.3 全自動(dòng)運(yùn)行時(shí)伺服、異步同步聯(lián)動(dòng) 36
6.4 本章小結(jié) 38
第七章 總結(jié) 39
參考文獻(xiàn) 41