Allegro導(dǎo)出 Gerber文件和鉆孔數(shù)據(jù)文件很多PCB廠家都沒(méi)有裝Allegro軟件,所以你不能直接發(fā).brd文件。(很多PCB小廠連ProtelDXP也沒(méi)有,只支持Protel99)什么是Gerber文件Gerber文件是所有電路設(shè)計(jì)軟件都可以產(chǎn)生的文件,在電子組裝行業(yè)又稱(chēng)為模版文件(stencil data),在PCB制造業(yè)又稱(chēng)為光繪文件。可以說(shuō)Gerber文件是電子組裝業(yè)中最通用最廣泛的文件格式Gerber文件是EIA的標(biāo)準(zhǔn)格式,分RS274-D和RS274-X兩種,其中RS274-X是RS274-D的擴(kuò)展文件。生產(chǎn)制造部門(mén)在條件許可的情況下,應(yīng)當(dāng)盡可能要求用戶或設(shè)計(jì)部門(mén)提供RS274-X的Gerber文件,這樣有利于各工序的生產(chǎn)準(zhǔn)備。準(zhǔn)備工作為了保證出片的正確性,需要在設(shè)計(jì)PCB文件之前對(duì)一些系統(tǒng)參數(shù)進(jìn)行設(shè)置,該設(shè)置包括畫(huà)圖的精度,圖片的尺寸,動(dòng)態(tài)鋪銅的格式。設(shè)置畫(huà)圖的精度。在allegro中打開(kāi)Setup->Drawing Size菜單,調(diào)出設(shè)置對(duì)話框,如圖1在對(duì)話框中確定User Units選擇Mils,Size選擇C,這樣整個(gè)作圖區(qū)域會(huì)大一點(diǎn),相應(yīng)的作圖范圍(Drawing Extents)變?yōu)閃idth:22000.00:Height:17000.00Left X和LeftY為原點(diǎn)坐標(biāo)。Accuracy選擇2,其他根據(jù)你的尺寸自行定義。設(shè)置完成選擇OK按鈕,使配置生效。
上傳時(shí)間: 2022-04-30
上傳用戶:zhaiyawei
應(yīng)用無(wú)跡卡爾曼濾波算法(UKF)進(jìn)行鋰電池的SOC估計(jì),采用Thevenin二階RC等效電路模型,對(duì)HPPC電池脈沖充放電實(shí)驗(yàn)數(shù)據(jù)進(jìn)行Matlab處理,得到較為準(zhǔn)確的模型.通過(guò)在Matlab中編寫(xiě)算法程序,對(duì)不同工況的估計(jì)值與實(shí)際值進(jìn)行誤差估算及對(duì)比分析,通過(guò)此算法進(jìn)行SOC估計(jì),得到該算法可有效降低系統(tǒng)誤差并糾正SOC的初值偏差.The non trace Calman filter (UKF) is applied to the SOC estimation of lithium battery. The Thevenin two order RC equivalent circuit model is used to process the HPPC battery pulse charge discharge experimental data by Matlab processing, and a more accurate model is obtained. By writing algorithm program in Matlab, the error estimation and comparison analysis of the estimated value and actual value of different states are carried out, and the SOC estimation is carried out by this algorithm. The algorithm can effectively reduce the system error and correct the initial value deviation of the SOC.
標(biāo)簽: 卡爾曼濾波
上傳時(shí)間: 2022-05-03
上傳用戶:默默
為了實(shí)時(shí)檢測(cè)血氧量,能使缺氧特別敏感的腦組織或心臟類(lèi)疾病患者得到及時(shí)治療,采用近紅外雙波長(zhǎng)透射式光電脈搏血氧測(cè)定法,以H橋電路對(duì)發(fā)射光源進(jìn)行控制及通用運(yùn)算放大器搭建濾波電路。運(yùn)用參數(shù)理論計(jì)算和計(jì)算機(jī)仿真結(jié)果相對(duì)比的方法,通過(guò)Mu ltisim軟件對(duì)所設(shè)計(jì)電路進(jìn)行仿真,仿真結(jié)果與理論參數(shù)計(jì)算相吻合,證明了電路參數(shù)設(shè)計(jì)的可行性,為血氧儀的實(shí)物制作提供參考。For real-time detection of oxygen saturation for timely treatment of the brain or heart,which are very sensitive to oxygen inadequacy,the near-infrared wavelengths double photoelectric pulse oximeter transmission method is adopted.The illuminant is controlled with the H bridge circuit and the filter circuit is built with general op-amps.Parameters by theoretical calculation is compared with the computer simulation results in Multisim and satisfactory results are obtained.It is shown that the design of the circuit parameters is feasible and can be a help in making the physical blood-oxygen monitor.
上傳時(shí)間: 2022-05-12
上傳用戶:
#include "NUC1xx.h"#include "Hal.h"#include "pwm.h"//wait current PWM cycle done, otherwise there maybe short pulse on FETvoid PWM_Stop(U8 ch){ switch(ch) { case PWM_CHANNEL_A: PWMA->u32CNR1 = 0; PWMA->u32CMR1 = 0; while(PWMA->u32PDR1 != 0); break; case PWM_CHANNEL_B: PWMA->u32CNR2 = 0; PWMA->u32CMR2 = 0; while(PWMA->u32PDR2 != 0); break; case PWM_CHANNEL_C: PWMA->u32CNR3 = 0; PWMA->u32CMR3 = 0; while(PWMA->u32PDR3 != 0); break; default: while(1); } PWMA->u32POE &= ~(1<<ch); PWMA->u32PCR &= ~(1<<(ch*8));}
上傳時(shí)間: 2022-06-01
上傳用戶:kingwide
本設(shè)計(jì)針對(duì)目前市場(chǎng)上傳統(tǒng)充電控制器對(duì)蓄電池的充放電控制不合理,同時(shí)保護(hù)也不夠充分,使得蓄電池的壽命縮短這種情況,研究確定了一種基于單片機(jī)的太陽(yáng)能充電控制器的方案。在太陽(yáng)能對(duì)蓄電池的充放電方式、控制器的功能要求和實(shí)際應(yīng)用方面做了一定分析,完成了硬件電路設(shè)計(jì)和軟件編制,實(shí)現(xiàn)了對(duì)蓄電池的高效率管理。設(shè)計(jì)一種太陽(yáng)能LED照明系統(tǒng)充電控制器,既能實(shí)現(xiàn)太陽(yáng)能電池的最大功率點(diǎn)跟蹤(MPPT)又能滿足蓄電池電壓限制條件和浮充特性。構(gòu)建實(shí)驗(yàn)系統(tǒng),測(cè)試表明,控制器可以根據(jù)蓄電池狀態(tài)準(zhǔn)確地在MPPT、恒壓、浮充算法之間切換,MPPT充電效率較恒壓充電提高約16%,該充電控制器既實(shí)現(xiàn)了太陽(yáng)能的有效利用,又延長(zhǎng)了蓄電池的使用壽命。在總體方案的指導(dǎo)下,本設(shè)計(jì)使用STMSS系列8位微控制器是STM8系列的主流微控制器產(chǎn)品,采用意法半導(dǎo)體的130納米工藝技術(shù)和先進(jìn)的內(nèi)核架構(gòu),主頻達(dá)到16MHz(105系列),處理能力高達(dá)20MTPS。內(nèi)置EEPROM、阻容(RC)振蕩器以及完整的標(biāo)準(zhǔn)外設(shè),性價(jià)比高,STMSS指令格式和意法半導(dǎo)體早期的ST7系列基本類(lèi)似,甚至兼容,內(nèi)嵌單線仿真接口模塊,支持STWM仿真,降低了開(kāi)發(fā)成本;擁有多種外設(shè),而且外設(shè)的內(nèi)部結(jié)構(gòu)、配置方式與意法半導(dǎo)體的同樣是Cortex-M3內(nèi)核的32位嵌入式微處理器STM32系列的MCU基本相同或者相似。另外系列芯片功耗低、功能完善、性價(jià)比高,可廣泛應(yīng)用在家用電器、電源控制和管理、電機(jī)控制等領(lǐng)域,是8位機(jī)為控制器控制系統(tǒng)較為理想的升級(jí)替代控制芯片"261,軟件部分依據(jù)PWM(Pulse Wiath Modulation)脈寬調(diào)制控制策略,編制程序使單片機(jī)輸出PMM控制信號(hào),通過(guò)控制光電耦合器通斷進(jìn)而控制MOSFET管開(kāi)啟和關(guān)閉,達(dá)到控制蓄電池充放電的目的,同時(shí)按照功能要求實(shí)現(xiàn)了對(duì)蓄電池過(guò)充、過(guò)放保護(hù)和短路保護(hù)。實(shí)驗(yàn)表明,該控制器性能優(yōu)良,可靠性高,可以時(shí)刻監(jiān)視太陽(yáng)能電池板和蓄電池狀態(tài),實(shí)現(xiàn)控制蓄電池最優(yōu)充放電,達(dá)到延長(zhǎng)蓄電池的使用壽命。
標(biāo)簽: mppt 太陽(yáng)能充放電控制器
上傳時(shí)間: 2022-06-19
上傳用戶:
INTRODUCTION In the past, adding speech recording and playback capability to a product meant using a digital signal processor or a specialized audio chip. Now, using a simplified Adaptive Differential Pulse Code Modulation(ADPCM) algorithm, these audio capabilities can be added to any PICmicro device. This application note will cover the ADPCM compression and decompression algorithms, performance comparison of all PICmicro devices, and an application using a PIC16C72 micro-controller.DEFINITION OF TERMS step size -value of the step used for quantization of ana-log signals and inverse quantization of a number of steps.quantization -the digital form of an analog input signal is represented by a finite number of steps.adaptive quantization -the step size of a quantizer is dramatically changed with time in order to adapt to a changing input signal.inverse quantizer -a finite number of steps is converted into a digital representation of an analog signal.
上傳時(shí)間: 2022-06-20
上傳用戶:
摘要:本系統(tǒng)以ICL8038集成塊為核心器件,制作一種函數(shù)信號(hào)發(fā)生器,制作成本較低。適合學(xué)生學(xué)習(xí)電子技術(shù)測(cè)量使用。ICL8038是一種具有多種波形輸出的精密振蕩集成電路,只需要個(gè)別的外部元件就能產(chǎn)生從0.001Hz~30KlHz的低失真正弦波、三角波、矩形波等脈沖信號(hào)。輸出波形的頻率和占空比還可以由電流或電阻控制。另外由于該芯片具有調(diào)制信號(hào)輸入端,所以可以用來(lái)對(duì)低頻信號(hào)進(jìn)行頻率調(diào)制。關(guān)鍵詞:函數(shù)信號(hào)發(fā)生器頻率調(diào)制Abstract:The system ICL8038 integrated block as the core device,producing a kind of function signal generator,producing low cost.Suitable for students to learn the use of electronic technology measurement.ICL8038 is a kind of multi-precision oscillator waveform output integrated circuits,a separate external components only need to be able to generate from the 0.001Hz ~30KHz low-distortion sine wave,triangle wave,square wave pulse signal,etc..Output waveform of the frequency and duty cycle can also be controlled by a currentor resistance.In addition,as the chip has a modulated signal input terminal,it can be used to low-frequency signal is frequency modulation.
標(biāo)簽: icl8038 函數(shù)發(fā)生器 電路
上傳時(shí)間: 2022-07-04
上傳用戶:zhanglei193
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