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| 折扣與優(yōu)惠：團(tuán)購(gòu)最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘 要:半導(dǎo)體激光器憑著其體積小、重量輕、能耗低、成本低、效率高、壽命長(zhǎng)、結(jié)構(gòu)簡(jiǎn)單、易于集成、可直接調(diào)制等眾多別類激光器無法比擬的優(yōu)勢(shì)已成為市場(chǎng)上的主要激光器件。 傳統(tǒng)的半導(dǎo)體激光器泵浦電源是用一個(gè)模擬電源，該類激光泵浦電源存在體積較大電源輸出值調(diào)制不便，穩(wěn)定度較差等缺點(diǎn)；與傳統(tǒng)的模擬半導(dǎo)體激光泵浦電源相比，數(shù)字式激光泵浦電源能較好的克服模擬電源的缺點(diǎn)。數(shù)字式激光泵浦電源憑借著其智能化、強(qiáng)大的實(shí)時(shí)控制功能、高度抗干擾性、高可靠性等眾多優(yōu)異性能，正在逐漸成為半導(dǎo)體激光器泵浦電源的主流驅(qū)動(dòng)電源。 本設(shè)計(jì)首先介紹了半導(dǎo)體激光器的結(jié)構(gòu)和工作原理及特性，接著詳細(xì)分析了本數(shù)字式半導(dǎo)體激光泵浦電源的設(shè)計(jì)要求，以及實(shí)現(xiàn)其功能的方案可行性。本論文設(shè)計(jì)的數(shù)字驅(qū)動(dòng)電源采用電流負(fù)反饋環(huán)節(jié)，能夠?qū)崿F(xiàn)電流的自動(dòng)控制。該設(shè)計(jì)包括控制部分和恒流電源兩大部分。恒流源采用電流負(fù)反饋環(huán)節(jié)使輸出電流保持在較高的穩(wěn)定度；控制部分采用單片機(jī)作為核心；另外采用了高精度的DAC和ADC，配以矩陣鍵盤和LCD實(shí)現(xiàn)輸出電流達(dá)到較高精度和可視化。同時(shí)該設(shè)計(jì)還采取了相應(yīng)的保護(hù)措施，比如過電流保護(hù)、電壓慢啟停保護(hù)等，以實(shí)現(xiàn)輸出電流穩(wěn)定可靠，保證半導(dǎo)體激光器工作在較高的穩(wěn)定度上。 關(guān)鍵詞：數(shù)字激光電源 智能控制 電流負(fù)反饋 恒流控制
ABSTRACT:Semiconductor laser with those advantages of small size, light weight, low energy consumption, low cost, high efficiency, long service life, simple structure, ease of integration, can be directly modulated, and many other incomparable advantages ，it has become the main laser devices on the market. Traditional pump power supply of semiconductor laser is a analog power supply . This pumped power supply has disadvantages of larger size and poor stability . Compared with the traditional analog power supply of semiconductor laser , digital pumped power supply can overcome those disadvantages of analog power supply . Digital power supply with the Outstanding performance of intelligent , Powerful real-time control functions , a high degree of anti-jamming sexuality, high reliability, and many other excellent performance, isgradually becoming the mainstream power supply of the semiconductor laser . This design first introduced the structure, working principle and characteristics of semi - conductor laser . then in detail analysed the design requirements of this digital semiconductor pump laser power supply and feasibility scheme to achieve its function. In this paper design - n ,the digital power supply adopts the current negative feedback link, which be able to achie - ve automatic control of the current. The design includes two parts of control and constant current power supply . Constant current source uses the current negative feedback link to keep the output current at a high degree of stability; Control part adopts a single chip micro - computer as the core; Also adopt high precision DAC and ADC, match with matrix keyboard and LCD output current can achieve higher accuracy and visualization. At the same time, the design also take the corresponding protective measures, such as over current protection, voltage slow start and stop protection in order to ensure the output current is stable and reliable, ensure that the semiconductor laser is operating in a higher degree of stability. Keywords: Digital laser power supply； intelligent control； current negative feedback ；constant current control |
