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外文翻譯——基于壓降型pwm開關(guān)電源的建模、仿真和單片機(jī)簡介-單片機(jī)(文件)

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【正文】 樣的干擾造成的高污染降低了電網(wǎng)電能的質(zhì)量。 IEC和 VDE在傳導(dǎo)發(fā)射上的需要和限制如圖 3 和圖 4所示[7,9]。在歐美社會(huì)電磁兼容性法規(guī)的遵行是強(qiáng)制的,產(chǎn)品必須要有認(rèn)證的標(biāo)簽以表示達(dá)到法規(guī)的要求 [8]。 2 干擾源提供一個(gè)低阻抗路徑,電力電子轉(zhuǎn)換器用來測量路徑端口。 線路阻抗穩(wěn)定網(wǎng)絡(luò) 輸出的信號電平與頻率的變化就是干擾頻譜。但是為了建模和仿真的目的, 線路阻抗穩(wěn)定網(wǎng)絡(luò) 的輸出頻譜是通過相應(yīng)的軟件來進(jìn)行計(jì)算的。 線路阻抗穩(wěn)定網(wǎng)絡(luò) 輸出的信號電平范圍在 10千赫茲到 30千赫茲 ,或者 150千赫茲到 30兆赫茲之間,這就是標(biāo)準(zhǔn)的電磁兼容性,并且它處在標(biāo)準(zhǔn)的限定范圍里。 圖 6 LISN網(wǎng)絡(luò)常見的拓?fù)浣Y(jié)構(gòu) 上圖 給出了線路阻抗穩(wěn)定網(wǎng)絡(luò)的阻抗與頻率的變化以及前面提到的拓?fù)浣Y(jié)構(gòu)。線路阻抗穩(wěn)定網(wǎng)絡(luò)應(yīng)具有以下幾個(gè)特點(diǎn),以滿足測量條件 [7]。 A 類為普通的消費(fèi)者, B 類為具有更苛刻限制的消費(fèi)者,在圖 3 和圖 4 這兩者被分開。最好的解決干擾和提高電能質(zhì)量的方法就是遵守國家或國際電磁兼容性規(guī)定。 三、電磁兼容性規(guī)章 電子設(shè)備的應(yīng)用,特別是那些擁有靜態(tài)電力電子轉(zhuǎn)換器的電子設(shè)備越來越多。負(fù)載和接地點(diǎn)的任意泄露都可以被認(rèn)為是電壓干擾源。 這種模式就是將一個(gè)噪聲源的噪聲施加到一個(gè)測試電路的不同線路。在這項(xiàng)研究中只考慮傳導(dǎo)發(fā)射 設(shè)備,如電腦,接收器,放大器,工業(yè)控制器等。國家或國際規(guī)章是電子設(shè)備電磁兼容性評估的一個(gè)參考的方面 [7~8]。不同類型的電力電子轉(zhuǎn)換器都能夠被用來當(dāng)做電磁的干擾源。生產(chǎn)商將生產(chǎn)的產(chǎn)品投放到市場,遵守電磁兼容性規(guī)章是必要的。因此,只有保證它是還不 夠的單芯片電腦不會(huì)崩潰,研究如何減少風(fēng)險(xiǎn)的干擾,它可以自動(dòng)檢測錯(cuò)誤。當(dāng)程序復(fù)位重新開始,給付措施,但是, TD = 0 * 0,是否是它是它的傳輸功率,試圖穿越已經(jīng)表明,它是在 30 年代期間的等待失去電力現(xiàn)在?;謴?fù)后的寶座,是否有電針有第一次已經(jīng)電力,是它是它是它是時(shí)候了 TS 檢測的發(fā)射功率,試圖去繼續(xù)下一次測量。啟動(dòng)完成后,如果一切順 利,該位置是放在“正常標(biāo)志”,誰保護(hù)的人復(fù)位周期進(jìn)入下一個(gè)正常運(yùn)行。 5,誰保護(hù)的人開始在電力法,它是發(fā)射功率 0 嘗試在第一。這就是說每一個(gè)是它恢復(fù)了運(yùn)作周期寶座邁進(jìn),它是通過將所有傳輸,這表明在內(nèi)部 RAM 中,而離開,只有當(dāng)零結(jié)算有第一次電??煞譃?2 種情況:①對于簡單的顯示儀上進(jìn)行測量,顯示送行后,復(fù)位,每次都復(fù)位之間因果關(guān)系的兩倍。如果時(shí)間允許計(jì)算,盡力采取方法 1。給系統(tǒng)設(shè)置一個(gè)復(fù)位按鈕,即一個(gè)常見的手動(dòng)復(fù)位,這個(gè)按鈕是沒有加入和正在恢復(fù)到 最后的寶座,是在電容量并聯(lián)兩端對上述引腳接地。因此,只要不作連續(xù) 2 次失誤,這是非常容錯(cuò)出口當(dāng)然,這種方法會(huì)為一個(gè)周期,正常的輸出變化滯后只是背后真正反映輸出端的兒子。 ( 2)容錯(cuò) 選擇能力,使輸出端連接在并行故障寬容,妥善電容,可以實(shí)現(xiàn)容錯(cuò)控制。這就是通常說的低接腳輸出,將根據(jù)復(fù)位的周期出現(xiàn)了連續(xù)的脈沖寬度章。否則,目前的永遠(yuǎn)是傾斜的完整的行政程序的錯(cuò)誤。高級別后,一個(gè)芯片計(jì)算機(jī)開始舉行的行為過程。為此上述水輪或電表脈沖產(chǎn)生的花費(fèi),可以使用施密特觸發(fā)器有煥然一新 。這種方法適用于長間隔時(shí)作出,也可以按照這個(gè)操作的 結(jié)果,確定報(bào)警喚醒時(shí)間在下一次暫停,非常靈活方便。 2??梢哉9ぷ鳎@是復(fù)位的 法律的外部條件。例如,在炎熱的形式。 ②由于每 1 秒恢復(fù)一次無條件的寶座,一旦停止工作期間提出的制度,一定能夠復(fù)位時(shí)恢復(fù)到下一次。這當(dāng)然是非??斓?,但對于閱讀穩(wěn)定,每秒的數(shù)據(jù)只是提升 12 倍,有大量的 CPU 時(shí)間是等待使用。現(xiàn)在 51 系列為例,進(jìn)入具體的原則和實(shí)施方法復(fù)位,作為高層次的信號,探測單芯片計(jì)算機(jī)。在測量和控制系統(tǒng)之間的長周期③,單芯片計(jì)算機(jī)花等周邊硬件的大量時(shí)間,也將受到干擾時(shí)進(jìn)行,并等待秩序。 關(guān)鍵字:單片機(jī) 復(fù)位 /休眠 抗干擾 簡介: 隨著在微電子技術(shù)的飛速發(fā)展,在單片機(jī)的性能迅速提高,充分展示了高速發(fā)展的運(yùn)作,邏輯控制,智能方面所取代,突出優(yōu)勢,擴(kuò)大了該電路組成,控制電路通過測量數(shù)字邏輯電路,操作本來在很大程度上,使用非常廣泛存在。t present forever the mistake of the intact executive program. ② For having application that time sequence controlled , after being restored to the throne each time , should check first that see the sign left last cycle , in order to determine what is done this cycle . That is to say every is it restore to the throne operation of cycle to stride , by is it transmit to indicate all, these indicate while leaving in inside RAM , the zero clearing only when have the electricity for the first time. For example, the protecting synthetically device of abovementioned voltage transformer , is restored to the throne regularly according to the interval of 20ms. It reaches the normal working state through, certain movement order after having the electricity, such as Fig. 4。 Next cycle , the mistake is corrected. So, so long as does not make mistakes in 2 cycles in succession, it is very faulttolerant to export Certainly, this kind of method will make the normal output change lag behind for one cycle, just really reflect the output end son. has the electricity to measure and restore to the throne manually Some system is it make some initialize and operate to want at electricity for the first time. Restored to the throne and already bee the beginning condition of normal running each time while adopting the way of restoring to the throne to run , it is unable to distinguish and have the electricity for the first time. In some pin connects the electric capacity of one1PF to the ground, measure this pin after being restored to the throne, if low level to have electricity for the first time. Give system set up one restore to the throne button, that is to say a mon one manual to restore to the throne, this button is not joined and being restored to the throne in the end, is connected in parallel in the electric capacity both ends to the ground of abovementioned pins. 3. The software realizes the main point is it resume with zero clearing RAM to output Restore to the throne the last all pin turn high level into , is it should take place unnecessary change for low pin to make regularly, so, should resume the state. of all pins immediately after being restored to the throne. There are 2 kinds of methods : ① Analyze and judge immediately after being restored to the throne this time, provide the state of the pin according to the need。 For writing down the instrument of the biggest or minimum, can use the window parator. In order to realize the electrification that is regulated, can use the electronic electric potential device, establish upper and lower limits with the order of the onechip puter. Reduce cycle and restored to the throne the high electricity at ordinary times In Fig3, restored to the throne the signal during high level Tr, the onechip puter is in the state of restoring to the throne, the procedure does not run, antiinterference ability is the strongest。s circuit for guarding the gate regularly, first, change waiting time into a dormancy state, time to shorten and may be interfered。 Combine the instance, analyze the characteristic of the hardware and software design under these kind of operation way. Keyword: Onechip puter Restore to the throne /dormancy antiinterference Foreword Introduction: With the development at full speed of the micro electric technique, the performance of the onechip puter improves rapidly, demonstrate the outstandi ng advantage in the operation, logic control, intelligent respect, replaced and enlarged the measuring that the circuit made up, control circuit by digital logical circuit, operation originally to a great extent, use very extensively. But because it have system halted, procedure run critical defect of flying etc, make it limit in a lot of important application of occasion. A lot of technology in antiinterference , for example set up the software trap, add the hardware to guard the gate
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