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他勵(lì)直流電機(jī)共模電磁干擾的分析_學(xué)士學(xué)位論文-資料下載頁

2025-08-02 14:02本頁面

【導(dǎo)讀】哈爾濱遠(yuǎn)東理工學(xué)院。畢業(yè)設(shè)計(jì)(論文)評(píng)語及成績(jī)。是否同意參加答辯:。是否建議授予學(xué)士學(xué)位:。答辯委員會(huì)成員簽字:1、2、3、答辯委員會(huì)主任簽字。任務(wù)起止時(shí)間:2020年12月10日至2020年5月31日。在電機(jī)設(shè)計(jì)過程中,經(jīng)常僅評(píng)估繞組在低頻或工頻時(shí)的電感,但繞組的傳導(dǎo)干擾。模型必須考慮高頻時(shí)繞組之間、繞組與機(jī)殼之間所存在的不可忽視的分布電容等參數(shù)。然后將其等效成集總參數(shù)電路。本文仿真及實(shí)驗(yàn)結(jié)果表明,所得參數(shù)在整個(gè)EMC頻段內(nèi)的仿真阻抗與實(shí)測(cè)阻抗具有。電機(jī),尤其是直流電機(jī),自發(fā)明以來,在各個(gè)領(lǐng)域的廣泛應(yīng)用,不僅不斷推動(dòng)人類。在電機(jī)運(yùn)行過程中,電機(jī)電磁場(chǎng)干擾主要來自于其繞組中突變的磁場(chǎng),和換向器與電刷。電壓,再侵入到其它各種設(shè)備中,影響其它設(shè)備的正常運(yùn)行,特別是當(dāng)其頻率足夠高時(shí),還會(huì)通過導(dǎo)線的天線效應(yīng)產(chǎn)生輻射,惡化整個(gè)電機(jī)系統(tǒng)的電磁環(huán)境。

  

【正文】 而提出 的,即使是用于分析漏電流的共模等效電路,適用的頻段也只是低頻段以下,很難滿足整個(gè)傳導(dǎo)干擾頻段高頻段電磁干擾問題研究的要求。 本文對(duì)于他勵(lì)直流電機(jī)的高頻共模等效電路,進(jìn)行了一些研究,其與之前的研究中所提到的等效電路的主要不同之處,是該等效電路可用于分析和預(yù)測(cè)他勵(lì)直流電機(jī)驅(qū)動(dòng)系統(tǒng)整個(gè)傳導(dǎo)干擾頻段共模的發(fā)射強(qiáng)度和電機(jī)側(cè)共模電流。 本文建立的如圖 34 所示的他勵(lì)直流電機(jī)高頻共模等效電路,從電路的理論計(jì)算及仿真分析結(jié)果,與實(shí)際的阻抗分析儀的測(cè)量結(jié)果作對(duì)比,可知,雖然在高頻段( 20MHz 以上)仿真結(jié)果誤差相對(duì)低頻段要高 ,但是在整個(gè)頻段內(nèi)直流電機(jī)共模阻抗的仿真結(jié)果與實(shí)驗(yàn)結(jié)果仍具有良好的一致性。所以采用該模型及等效電路參數(shù),能夠準(zhǔn)確的反映出他勵(lì)直流電機(jī)在該頻段的共模阻抗特性。 而對(duì)于建立的干擾源模型時(shí),本文從圖 41 的電機(jī)換向過程等效電路圖著手推到計(jì)算,將所得到的模型與之前的電機(jī)模型相結(jié)合,形成如 46 所示的電機(jī)與干擾源的電路模型,并且從用人工電源網(wǎng)絡(luò)得到的實(shí)驗(yàn)波形,與用 PSPICE 構(gòu)建的仿真電路的仿真波形相對(duì)比,可得到如 47 圖所示的結(jié)果,從對(duì)比圖中可以看到,仿真頻譜波形能較好的跟蹤實(shí)際測(cè)試頻譜波形,充分證明了所建立直流電 機(jī)模型和干擾源數(shù)值分析的正確性。 哈爾濱遠(yuǎn)東理工學(xué)院學(xué)士學(xué)位論文 23 致 謝 回顧本科學(xué)習(xí)期間,我所取得的進(jìn)步,都離不開諸多良師益友和親人的鼓勵(lì)和幫助,在此,我要向他們表示最衷心和最誠(chéng)摯的感謝! 本文是在馬麗華老師的指導(dǎo)下完成的。她淵博的學(xué)識(shí)、精湛的學(xué)術(shù)、嚴(yán)謹(jǐn)?shù)淖黠L(fēng)、創(chuàng)新的思想熏陶著我,深刻的影響著我的學(xué)習(xí)和生活,必將使我終生受益!衷心的感謝劉金鳳老師對(duì)我的諄諄教誨和悉心關(guān)懷! 四年來,我收獲良多,因?yàn)橛泻芏嗳私o予我無私的幫助和關(guān)心,在此表示深深的感謝。 在此感謝電子信息工程專業(yè)的、所有 基礎(chǔ)課的老師和專業(yè)課的老師,是他們啟發(fā)我,點(diǎn)撥我,鼓勵(lì)我!我今天的成長(zhǎng),與他們的諄諄教誨是離不開的。 感謝我所有的朋友和同學(xué),一起生活和學(xué)習(xí)的美好時(shí)光里,他們給予我的無私幫助和真誠(chéng)鼓勵(lì)是終生難忘的!祝他們?cè)诟髯缘牡缆飞显阶咴綄拸V! 哈爾濱遠(yuǎn)東理工學(xué)院學(xué)士學(xué)位論文 24 參考文獻(xiàn) [1]楊耕,羅應(yīng)立.電機(jī)與運(yùn)動(dòng)控制系統(tǒng).清華大學(xué)出版社, 2020: 15~27. [2]戈寶軍,梁艷萍,溫嘉斌.電機(jī)學(xué).中國(guó)電力出版社, 2020: 46~87. [3]徐建國(guó).電機(jī)與拖動(dòng)基礎(chǔ).第 2 版.高等教育出版社, 2020: 32~36. [4]單潮龍 ,馬偉明,王鐵軍.逆變器驅(qū)動(dòng)電機(jī)系統(tǒng) EMC 模型建立及直流側(cè)傳到干擾研究.海軍工程大學(xué)學(xué)報(bào), 2020, 15(1): 1~5. [5]M M Swamy, K Yamada, T Kume . Commonmode Current Attenuation Techniques for Use with PWM Drives . IEEE Trans . on Power Electronics, 2020, 16( 2): 248~255. [6]孟進(jìn),馬偉明,劉德志,等.交流發(fā)電機(jī)整流系統(tǒng)傳導(dǎo)電磁干擾的時(shí)域模型與仿真研究.中國(guó) 電機(jī)工程學(xué)報(bào), 2020, 22( 6): 76~80. [7]Nobuyoshi Mutoh . A Suitable Method for Ecovehicles to Control Surge Voltage Occurring at Motor Terminals Connected to PWM Inverters and to Control Induced EMINoise. IEEE Trans. on Vehicular Technology, 2020, 57( 4): 2089~2098. [8]Jens Benecke, Andre Linde, Stefan Dickmann. Automatic HF Model Generation and Impedance Optimization for Low Voltage DC Motors. Proceeding on ICEM . 2020: 1~6. [9]Zhang D B, Chen D. Nonintrinsic Differential Mode Noise caused by Ground Current in an Offline Power Supply . Power Electronics specialists Conference Record,Piscat— away, USA, 1998: 1131~1133. [10]姜保軍. PWM 電機(jī)驅(qū)動(dòng)系統(tǒng)傳導(dǎo)共模 EMI 抑制方法研究.哈爾濱 : 哈爾濱工業(yè)大學(xué)電氣工程及自動(dòng)化學(xué)院, 2020 : 1~19. [11]錢照明,程肇基.電力電子系統(tǒng)電磁兼容設(shè)計(jì)基礎(chǔ)及干擾抑制技術(shù) . 杭州:浙江大學(xué)出版社, 2020: 47~98. [12]黃勇,曾帆,陳全世 等.電動(dòng)汽車共模電流傳導(dǎo)特性的研究.電工電能新技 術(shù),2020, 26(3) : 3~16. [13]Yochan Son, Seungki Sul . A new active monmode EMI filter for PWM inverter, IEEE Trans . On Power Electronics, 2020, 18(6) : 4~6. [14]堵杰,孫承波,陳國(guó)呈.無刷直流電動(dòng)機(jī)換相過程中續(xù)流對(duì)電壓和電流的影響.電工技術(shù)雜志, 2020(3) : 47~52. [15]方一鳴,陸金波,王益群 等.具有弱磁調(diào)速的他勵(lì)直流電機(jī)非線性多輸入多輸出控制器 的設(shè)計(jì).中國(guó)電機(jī)工程學(xué)報(bào), 2020, 23( 8): 38~42. [16]李小竹,電機(jī)與拖動(dòng) . 徐州:中國(guó)礦機(jī)出版社 . [17]唐介,控制微電機(jī) . 北京:高等教育出版社 . [18]楊長(zhǎng)能 . 電機(jī)學(xué) . 重慶:重慶大學(xué)出版社 . 1994 [19]劉啟新 . 電機(jī)與拖動(dòng)基礎(chǔ) . 北京:中國(guó)電力出版社 . 2020 [20]湯蘊(yùn) . 電機(jī)學(xué) . 西安:西安交通大學(xué)出版社 . 1993 附錄 A 英文文獻(xiàn)原文 哈爾濱遠(yuǎn)東理工學(xué)院學(xué)士學(xué)位論文 25 Position Servo Control of Brushless DC Motor Based on the Second Discrete Filter Hongwei Fang, Changliang Xia, Zhengwei Chen and Xile Wei School of Electrical Engineering and Automation Tianjin University Tianjin, 300072, China Abstract Analysis of the separately excited DC motor monmode electromagic interference A novel position servo controller for brushless DC motor is designed based on the improved second discrete smooth trajectory filter. The output of the filter is suitable for the feedforward control for the servo system, especially for the second order system, which guarantees minimum time response and smooth trajectory tracking. Based on the second order model of Brushless DC motor, the cascade servo control of the brushless DC motor is implemented upon the second discrete filter algorithm. The outerloop of the whole control system is realized by the second discrete filter, and the innerloop is the traditional PI current controller. It has the integrative merits of the linear and nonlinear control methods. Moreover, a load torque observer is advanced to enhance the antidisturb ability of the servo system when the brushless DC motor running with motor parameters change and/or external load variation. The proposed control method can obtain the excellent position tracking performance as well as the good speed response ability. Simulation and experiment results have verified the validity and effectiveness of this control scheme. Keywords Brushless DC motor。 second discrete filter。 PI controller。 servo control。 observer I. INTRODUCTION Since the traditional brush be taken place by the electrical brush and the permanent rotor substituted for excitation winding, the Brushless DC motor (BLDCM) has less volume, light weight, less inertia and high precision position control and easy to speed regulation. To be as a kind of servo mechanical anism, the BLDCM can improve the system reliability and reduce the electrical sparkle. The ability of the brushless DC motor applying to servo environment has been analyzed and its advantage and disadvantage was pared to PMSM from the view of power density, torque ripple and 哈爾濱遠(yuǎn)東理工學(xué)院學(xué)士學(xué)位論文 26 parameters sensitivity in [1]. The servo control algorithm of BLDCM can be divided into linear PID control and nonlinear control. The traditional PID control algorithm is easy to be implemented, but it cannot be apply into high dynamic performance area [26]. The nonovershoot BLDCM digital position control system was achieved in [7] based on the fuzzy method. The variable structure control has been implemented in the position servo of BLDCM control system, and it has been verified good performance in the application of directdrive robotic arm in [8]. Generally, the nonlinear control method, such as fuzzy and variable structure, can make the system obtain high quality dynamic and stable performance and has good robustness. Of course, it’s more plex and more difficult to be carried out than the linear control one. A new
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