本文選題：強(qiáng)激光器 + 強(qiáng)激光開(kāi)關(guān)電源　； 參考：《電子科技大學(xué)》2014年碩士論文

【摘要】：通過(guò)調(diào)研氣體激光器及氣體激光電源的發(fā)展,對(duì)比國(guó)內(nèi)外氣體激光器電源達(dá)到的技術(shù)狀態(tài),分析了激光器電源研制的意義,結(jié)合激光器的特點(diǎn),總結(jié)氣體激光器電源存在的問(wèn)題及研究方向。針對(duì)激光器開(kāi)關(guān)電源控制系統(tǒng)的特殊性,先分析了強(qiáng)激光器開(kāi)關(guān)電源的工作原理,以及強(qiáng)激光器放電對(duì)控制系統(tǒng)的影響。分析了多種激光器充電模式,確定選用全橋串聯(lián)諧振主回路作為強(qiáng)激光器開(kāi)關(guān)電源拓?fù)浠芈?既具有抗負(fù)載短路特性,也具有軟開(kāi)關(guān)特性,對(duì)外圍電路干擾小,同時(shí)降低了了高次諧波對(duì)外電網(wǎng)的干擾。IGBT為主開(kāi)關(guān)器件,可實(shí)現(xiàn)高頻、高功率輸出,可以快速關(guān)斷,避免對(duì)負(fù)載造成更大的危害,綜合考慮強(qiáng)激光器的特性,可選擇DSP、FPGA或單片機(jī)作為開(kāi)關(guān)電源主控系統(tǒng),考慮到DSP等價(jià)格較高且編程較復(fù)雜,關(guān)鍵是供電電壓較低,容易受強(qiáng)脈沖干擾,最終確定選用5V供電的AT89C52作為控制芯片。通過(guò)過(guò)上位機(jī)進(jìn)行遠(yuǎn)程控制,對(duì)強(qiáng)激光器的各種功能進(jìn)行控制,包括電壓設(shè)置、頻率設(shè)置、脈沖個(gè)數(shù)設(shè)置及各種故障狀態(tài)反饋,實(shí)現(xiàn)智能化控制系統(tǒng)。針對(duì)強(qiáng)激光器的特殊性,具有較強(qiáng)的電磁干擾,采取了理論和實(shí)踐結(jié)合增加了多重抗干擾措施。屏蔽干擾是電源控制系統(tǒng)正常運(yùn)行的基本保障,干擾信號(hào)不僅僅通過(guò)導(dǎo)線傳遞還可以同空間傳遞,當(dāng)干擾環(huán)形相對(duì)惡劣時(shí),無(wú)法通過(guò)硬件完全屏蔽干擾或者屏蔽代價(jià)過(guò)高時(shí)往往會(huì)使用軟件和硬件結(jié)合的方式處理,單片機(jī)系統(tǒng)是通過(guò)循環(huán)執(zhí)行指令來(lái)完成各種控制,在指令執(zhí)行過(guò)程中檢測(cè)到干擾信號(hào)會(huì)執(zhí)行錯(cuò)誤的判斷,引起程序執(zhí)行錯(cuò)誤或者亂跑的現(xiàn)象,可以根據(jù)具體情況對(duì)軟件進(jìn)行優(yōu)化,避免執(zhí)行錯(cuò)誤的指令。該控制系統(tǒng)采用單片機(jī)AT89C52作為處理器,采取了一系列抗干擾措施實(shí)現(xiàn)了強(qiáng)激光器開(kāi)關(guān)電源的可靠控制,通過(guò)和上位機(jī)通訊實(shí)現(xiàn)了對(duì)強(qiáng)激光器開(kāi)關(guān)電源的智能化操作,兼容了小型化和模塊化的設(shè)計(jì),便于大規(guī)模生產(chǎn)。
[Abstract]:By investigating the development of gas laser and gas laser power supply, the technical status of gas laser power supply at home and abroad is compared, and the significance of laser power source development is analyzed, combined with the characteristics of laser. The existing problems and research direction of gas laser power supply are summarized. In view of the particularity of the laser switching power supply control system, the working principle of the strong laser switching power supply and the influence of the strong laser discharge on the control system are analyzed. In this paper, several charging modes of laser are analyzed, and the main circuit of full-bridge series resonance is chosen as the topology circuit of strong laser switching power supply, which has both anti-load short-circuit characteristic and soft switching characteristic, and has little interference to peripheral circuit. At the same time, it reduces the interference of high order harmonic external power grid. IGBT is the main switch device, which can realize high frequency and high power output, can turn off quickly, avoid more harm to the load, and consider the characteristics of strong laser synthetically. DSP FPGA or single chip microcomputer can be chosen as the main control system of switching power supply. Considering the high price and complex programming of DSP, the key point is that the power supply voltage is lower and easy to be interfered by strong pulse. Finally, the 5V power supply AT89C52 is selected as the control chip. Through remote control over the host computer, various functions of the strong laser are controlled, including voltage setting, frequency setting, pulse number setting and various fault state feedback, to realize the intelligent control system. In view of the particularity of the strong laser, it has strong electromagnetic interference, so the theory and practice are combined to increase the multiple anti-jamming measures. Shielding interference is the basic guarantee for the normal operation of the power supply control system. The interference signal can be transmitted in the same space not only through the wire, but also in the same space, when the interference ring is relatively bad, When the interference can not be completely shielded by hardware or the cost of shielding is too high, it is often handled by the combination of software and hardware. In the process of execution of instructions, the detection of interference signals will carry out the wrong judgment, which will cause the program execution errors or the phenomenon of running around. The software can be optimized according to the specific situation to avoid the execution of wrong instructions. A series of anti-jamming measures are adopted to realize the reliable control of the switching power supply of the strong laser, and the intelligent operation of the switching power supply of the strong laser is realized by communicating with the host computer. Compatible with miniaturization and modular design, convenient for mass production.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN86;TN248
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本文編號(hào)：1923511