本文選題：強激光器 + 強激光開關電源�。� 參考：《電子科技大學》2014年碩士論文

【摘要】：通過調研氣體激光器及氣體激光電源的發(fā)展,對比國內外氣體激光器電源達到的技術狀態(tài),分析了激光器電源研制的意義,結合激光器的特點,總結氣體激光器電源存在的問題及研究方向。針對激光器開關電源控制系統(tǒng)的特殊性,先分析了強激光器開關電源的工作原理,以及強激光器放電對控制系統(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)諧振主回路作為強激光器開關電源拓撲回路,既具有抗負載短路特性,也具有軟開關特性,對外圍電路干擾小,同時降低了了高次諧波對外電網的干擾。IGBT為主開關器件,可實現(xiàn)高頻、高功率輸出,可以快速關斷,避免對負載造成更大的危害,綜合考慮強激光器的特性,可選擇DSP、FPGA或單片機作為開關電源主控系統(tǒng),考慮到DSP等價格較高且編程較復雜,關鍵是供電電壓較低,容易受強脈沖干擾,最終確定選用5V供電的AT89C52作為控制芯片。通過過上位機進行遠程控制,對強激光器的各種功能進行控制,包括電壓設置、頻率設置、脈沖個數(shù)設置及各種故障狀態(tài)反饋,實現(xiàn)智能化控制系統(tǒng)。針對強激光器的特殊性,具有較強的電磁干擾,采取了理論和實踐結合增加了多重抗干擾措施。屏蔽干擾是電源控制系統(tǒng)正常運行的基本保障,干擾信號不僅僅通過導線傳遞還可以同空間傳遞,當干擾環(huán)形相對惡劣時,無法通過硬件完全屏蔽干擾或者屏蔽代價過高時往往會使用軟件和硬件結合的方式處理,單片機系統(tǒng)是通過循環(huán)執(zhí)行指令來完成各種控制,在指令執(zhí)行過程中檢測到干擾信號會執(zhí)行錯誤的判斷,引起程序執(zhí)行錯誤或者亂跑的現(xiàn)象,可以根據具體情況對軟件進行優(yōu)化,避免執(zhí)行錯誤的指令。該控制系統(tǒng)采用單片機AT89C52作為處理器,采取了一系列抗干擾措施實現(xiàn)了強激光器開關電源的可靠控制,通過和上位機通訊實現(xiàn)了對強激光器開關電源的智能化操作,兼容了小型化和模塊化的設計,便于大規(guī)模生產。
[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.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN86;TN248
，

本文編號：1923511