嵌入式激光打標(biāo)機(jī)運(yùn)動(dòng)控制卡硬件系統(tǒng)設(shè)計(jì)

電子機(jī)電論文編號(hào):JD699  論文字?jǐn)?shù):28307,頁數(shù):49

目 錄
1  緒  論 1
1.1  激光打標(biāo)概述 1
1.2  激光標(biāo)刻機(jī)的分類 1
1.2.1  掩模式打標(biāo)系統(tǒng) 2
1.2.2  陣列式打標(biāo)系統(tǒng) 2
1.2.3  掃描式打標(biāo)系統(tǒng) 2
1.3  激光打標(biāo)系統(tǒng)的一般組成 3
1.4  國內(nèi)外激光打標(biāo)的市場現(xiàn)狀 4
1.5  研究課題內(nèi)容和意義 6
2  激光打標(biāo)運(yùn)動(dòng)控制卡接口設(shè)計(jì) 7
2.1  常見計(jì)算機(jī)接口 7
2.2 USB2.0通訊協(xié)議 8
2.2.1  USB的總線拓?fù)潴w系 8
2.2.2  USB數(shù)據(jù)傳輸格式 9
2.2.3  USB總線傳輸 11
2.3  USB2.0接口控制芯片 13
2.3.1  控制芯片選型 13
2.3.2  EZ-USB FX2芯片資源介紹 15
2.3.3  USB.2.0接口模式的設(shè)計(jì) 16
2.4  USB2.0固件開發(fā) 19
2.4.1  USB2.0固件整體描述 19
2.4.2  固件程序框架設(shè)計(jì) 20
3  運(yùn)動(dòng)控制卡控制單元設(shè)計(jì) 22
3.1  控制器硬件組成及工作原理 22
3.2  DSP芯片的概述 22
3.2.1  主要DSP芯片廠商及其產(chǎn)品 23
3.2.2  DSP芯片的選型參數(shù) 24
3.3  DSP控制單元設(shè)計(jì) 26
3.3.1  TMS320C6211 DSP的結(jié)構(gòu)特點(diǎn) 26
3.3.2  最小系統(tǒng)設(shè)計(jì) 29
3.3.3  DSP外設(shè)接口設(shè)計(jì) 32
4  D/A轉(zhuǎn)換單元設(shè)計(jì) 35
4.1  D/A轉(zhuǎn)換的基本原理 35
4.2  轉(zhuǎn)換方式 36
4.3  D/A轉(zhuǎn)換芯片性能參數(shù) 37
4.4  D/A接口硬件設(shè)計(jì) 37
5  結(jié)束語 39
參考文獻(xiàn) 41
致 謝 43
附 錄 44

摘  要
激光打標(biāo)機(jī)是在激光焊接、激光熱處理、激光切割、激光打孔等應(yīng)用技術(shù)之后發(fā)展起來的一門新型非接觸、無污染、無磨損的加工技術(shù)。目前，在激光打標(biāo)系統(tǒng)中，硬件控制電路都是基于計(jì)算機(jī)ISA 總線或者PCI 總線而設(shè)計(jì)的，必須安裝在計(jì)算機(jī)主板的ISA總線或PCI總線擴(kuò)展槽中。因此整個(gè)系統(tǒng)龐大，沉重，在調(diào)試、使用中不方便，而且，硬件安裝于計(jì)算機(jī)主板上，降低了打標(biāo)系統(tǒng)的穩(wěn)定性。為此本文給出一種新的不依賴于計(jì)算機(jī)ISA總線和PCI總線的嵌入式激光打標(biāo)控制器。
本文首先對(duì)激光打標(biāo)系統(tǒng)進(jìn)行分類介紹，并闡述了激光打標(biāo)系統(tǒng)的一般組成和國內(nèi)外激光打標(biāo)的現(xiàn)狀，在分析了幾種常見的計(jì)算機(jī)與外設(shè)接口的特征后，提出了USB2.0接口激光打標(biāo)控制器的設(shè)計(jì)思想。本文在介紹了USB2.0通信協(xié)議以后，決定采用Cypress公司的EZ-USB FX2來建立上位機(jī)與DSP的通信平臺(tái)，并設(shè)計(jì)了FX2與DSP的通行接口和相關(guān)的固件程序框架。
本系統(tǒng)將應(yīng)用TMS320C6211作為控制芯片，它全速運(yùn)行時(shí)性能高達(dá)1333MIPS，最高可擴(kuò)展512MB存儲(chǔ)容量，能很好的完成數(shù)據(jù)傳輸、計(jì)算和圖片存儲(chǔ)功能。文中著重介紹了DSP最小系統(tǒng)的實(shí)現(xiàn)，存儲(chǔ)芯片的擴(kuò)展。最后采用ADI公司16位串行D/A轉(zhuǎn)換芯片DA5061實(shí)現(xiàn)與DSP的連接，輸出模擬電壓控制步進(jìn)電機(jī)工作。

關(guān)鍵詞：激光打標(biāo)； 控制器； USB2.0； DSP； 串行D/A轉(zhuǎn)換

Abstract
The laser marking machine is a new marking technique that is developed after the laser welding, laser heat treatment, laser cutting, drilling and other applications of laser technology. It is no touching, no polluting and no wearing. Recently, the hardware circuit board must be plugged in the ISA bus or PCI bus of computer main board in the laser marking system.So the system is large, heavy and inconvenient in debugging or use and reduces the marking system stability. So a new embedded Laser Marking controller that is independent of ISA or PCI bus was designed in this paper.
Firstly, classified laser marking system, the general composition and the laser marking situation at the domestic and foreign presently were introduced in this paper. After having analyzed several kinds of common computer peripheral device and connection characteristics, the design concept of using USB2.0 was proposed to the Laser marking controllers. The paper decided to use the Cypress Corporation's EZ-USB FX2 to establish the superior machine and the DSP communications platform after presenting the USB2.0 communication protocol , and then designed FX2 and the DSP general connection，finally proposed the related firmware program frame.
The system will apply TMS320C6211 as the motion control board control chips, which runs at the full speed performance up to 1333 MIPS and extend the maximum storage of 512 MB. It has very good performance of data transmission, computing and image storage capabilities. The paper focused on achieving the DSP minimum system and the expansion of memory chips. Finally ADI Corporation 16 serial bit D/A transformation chip DA5061 was used to realize with the DSP connection, and then the analogue output voltage could accurately control stepper motor work.
Key words：  Laser Marking;  Controller;  USB2.0;  DSP;  Serial D/A Transformation