【摘要】：隨著電子技術(shù)和工業(yè)技術(shù)的不斷發(fā)展與融合,激光技術(shù)的應(yīng)用越來(lái)越廣泛。而隨之衍生的激光雕刻機(jī)在廣告、藝術(shù)品加工等行業(yè)也成為諸多企業(yè)的焦點(diǎn)。在激光雕刻機(jī)行業(yè),控制技術(shù)是決定企業(yè)能否占據(jù)核心競(jìng)爭(zhēng)力的重要因素之一,控制系統(tǒng)的優(yōu)劣更是客戶(hù)決定是否購(gòu)買(mǎi)產(chǎn)品的決定性因素。 本文針對(duì)小型桌面式激光雕刻機(jī)的控制技術(shù)展開(kāi)研究,應(yīng)用數(shù)據(jù)處理能力與控制能力均比較強(qiáng)大的DSP芯片作為激光雕刻機(jī)系統(tǒng)的控制核心單元,實(shí)現(xiàn)了硬件平臺(tái)的搭建。在基本硬件平臺(tái)的基礎(chǔ)上,對(duì)激光雕刻機(jī)控制系統(tǒng)軟件進(jìn)入深入研究,設(shè)計(jì)完成了主要的控制軟件模塊,包括圖像處理、激光雕刻掃描輸出控制和掉電保護(hù),為下一步研究開(kāi)發(fā)性能獨(dú)特的激光雕刻機(jī)奠定了基礎(chǔ)。 本文的主要研究?jī)?nèi)容包括以下幾個(gè)方面： (1)介紹了激光雕刻機(jī)系統(tǒng)的整體結(jié)構(gòu)及其布局、激光雕刻的工作流程和系統(tǒng)的設(shè)計(jì)要求,闡述了整個(gè)控制系統(tǒng)的基本原理,擬定了系統(tǒng)的設(shè)計(jì)方案,確定了控制系統(tǒng)的主要研究?jī)?nèi)容。 (2)研究并設(shè)計(jì)了激光雕刻機(jī)控制系統(tǒng),包括硬件系統(tǒng)和軟件系統(tǒng),硬件系統(tǒng)實(shí)現(xiàn)了步進(jìn)電機(jī)的驅(qū)動(dòng)控制,USB電路的設(shè)計(jì)和激光管的功率控制方案,軟件系統(tǒng)包括上位機(jī)基本功能和DSP軟件系統(tǒng)中解決的關(guān)鍵技術(shù)。 (3)分析了激光雕刻中涉及的圖像處理基本原理,如圖像的平移、旋轉(zhuǎn)、多灰度等級(jí)劃分等,并實(shí)現(xiàn)了Matlab實(shí)驗(yàn)仿真,使得激光雕刻機(jī)具有更佳的雕刻效果。 (4)分析比較了幾種雕刻控制算法,提出了一種改進(jìn)控制策略,確定了采用從低灰度等級(jí)開(kāi)始雕刻的雙向掃描方式,以提高雕刻速度,減少激光器的開(kāi)閉次數(shù)。 (5)研究了激光雕刻機(jī)雕刻過(guò)程中掉電保護(hù)的算法。
[Abstract]:With the development and integration of electronic technology and industrial technology, laser technology is applied more and more widely. The resulting laser engraving machine in advertising, art processing and other industries have become the focus of many enterprises. In the laser engraving machine industry, the control technology is one of the important factors to determine whether the enterprise can occupy the core competitiveness, and the quality of the control system is the decisive factor for the customer to decide whether to buy the product or not. In this paper, the control technology of the small desktop laser engraving machine is studied. The DSP chip, which is powerful in data processing and control ability, is used as the control core unit of the laser engraving machine system, and the hardware platform is built. On the basis of the basic hardware platform, the control system software of laser engraving machine has been deeply studied, and the main control software modules have been designed and completed, including image processing, laser engraving scanning output control and power down protection. It lays a foundation for the further research and development of laser engraving machine with unique performance. The main research contents of this paper are as follows: (1) the whole structure and layout of laser engraving machine, the work flow of laser engraving and the design requirements of the system are introduced, and the basic principle of the whole control system is expounded. The main research contents of the control system are determined. (2) the control system of laser engraving machine, including hardware system and software system, is studied and designed. The hardware system realizes the design of the USB circuit of the stepper motor and the power control scheme of the laser tube. The software system includes the basic functions of the host computer and the key technologies in the DSP software system. (3) the basic principles of image processing involved in laser engraving, such as image translation, rotation, multi-grayscale classification, etc., are analyzed. The simulation of Matlab experiment makes the laser engraving machine have better engraving effect. (4) several carving control algorithms are analyzed and compared, and an improved control strategy is proposed. In order to improve the engraving speed and reduce the opening and closing times of laser, the bidirectional scanning method, which starts with low grayscale level, is determined. (5) the algorithm of power-off protection in the engraving process of laser engraving machine is studied.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TP273;TN249

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 韓玲;二氧化碳激光柔性傳輸系統(tǒng)的設(shè)計(jì)[D];燕山大學(xué);2013年

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本文編號(hào)：2239055