本文選題：半導(dǎo)體激光熔覆機(jī) + 驅(qū)動(dòng)電源��； 參考：《長(zhǎng)春工業(yè)大學(xué)》2015年碩士論文

【摘要】：在激光加工方面,以全固態(tài)激光器取代閃光燈泵浦固體激光已經(jīng)是大勢(shì)所趨。驅(qū)動(dòng)電源作為半導(dǎo)體激光加工設(shè)備的核心部分,其性能好壞直接影響到整個(gè)激光裝置的技術(shù)指標(biāo)。本文以半導(dǎo)體激光熔覆機(jī)驅(qū)動(dòng)電源為研究背景,設(shè)計(jì)了相關(guān)硬件電路和應(yīng)用程序,并進(jìn)行了仿真和實(shí)驗(yàn)驗(yàn)證。論文完成以下研究工作：第一,根據(jù)半導(dǎo)體激光熔覆機(jī)驅(qū)動(dòng)電源的技術(shù)要求,對(duì)驅(qū)動(dòng)電源進(jìn)行了軟硬件設(shè)計(jì)。在研究恒流源的穩(wěn)流原理的基礎(chǔ)上,對(duì)恒流源驅(qū)動(dòng)電路和光功率采集電路硬件進(jìn)行了設(shè)計(jì)。恒流源驅(qū)動(dòng)電路采用串聯(lián)反饋式恒流源驅(qū)動(dòng)模式,并設(shè)計(jì)了驅(qū)動(dòng)器的浪涌消除電路、過(guò)流過(guò)壓檢測(cè)電路,同時(shí)對(duì)相關(guān)軟件進(jìn)行了設(shè)計(jì)。第二,對(duì)半導(dǎo)體激光器溫度控制單元硬件和軟件進(jìn)行設(shè)計(jì)。包括溫度采樣電路、恒溫控制電路、熱電制冷電路。采用數(shù)字PI算法完成半導(dǎo)體激光器溫度閉環(huán)控制。第三,對(duì)激光熔覆機(jī)能量控制進(jìn)行了研究。通過(guò)光功率采集,采用數(shù)字PI算法,完成了光功率的閉環(huán)調(diào)節(jié)。第四,對(duì)半導(dǎo)體激光熔覆機(jī)驅(qū)動(dòng)電源的主回路進(jìn)行了仿真和實(shí)驗(yàn)驗(yàn)證,同時(shí)對(duì)主回路瞬態(tài)、直流穩(wěn)態(tài)和噪聲進(jìn)行了仿真分析。最后,對(duì)半導(dǎo)體激光器溫控單元及光功率調(diào)節(jié)系統(tǒng),進(jìn)行了閉環(huán)仿真實(shí)驗(yàn)。通過(guò)以上仿真及實(shí)驗(yàn)測(cè)試結(jié)果,證明了文中設(shè)計(jì)的半導(dǎo)體激光熔覆機(jī)驅(qū)動(dòng)電源的正確性。
[Abstract]:In laser processing, it is a general trend to replace flash-pumped solid-state laser with all-solid-state laser. As the core part of semiconductor laser processing equipment, the driving power supply has a direct impact on the technical specifications of the whole laser device. In this paper, based on the driving power supply of semiconductor laser cladding machine, the related hardware circuit and application program are designed and verified by simulation and experiment. The main works are as follows: first, according to the technical requirements of the driving power supply of semiconductor laser cladding machine, the hardware and software of the drive power supply are designed. On the basis of studying the steady current principle of constant current source, the hardware of driving circuit and optical power acquisition circuit of constant current source are designed. The constant current source drive circuit adopts the series feedback constant current source drive mode, and designs the surge elimination circuit of the driver, the overcurrent overvoltage detection circuit, and the related software design. Secondly, the hardware and software of the semiconductor laser temperature control unit are designed. Including temperature sampling circuit, constant temperature control circuit, thermoelectric refrigeration circuit. The temperature closed loop control of semiconductor laser is accomplished by using digital Pi algorithm. Thirdly, the control of laser cladding function is studied. Through optical power acquisition and digital Pi algorithm, the closed loop regulation of optical power is completed. Fourthly, the main circuit of the semiconductor laser cladding machine driving power supply is simulated and verified by experiments. The transient, DC steady state and noise of the main circuit are also simulated and analyzed. Finally, a closed loop simulation experiment is carried out on the temperature control unit and optical power regulation system of semiconductor laser. The simulation and experimental results show the correctness of the semiconductor laser cladding power supply designed in this paper.
【學(xué)位授予單位】：長(zhǎng)春工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TN248.4;TN86

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