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FREQ

  • labview編寫的Agilent頻譜分析儀器驅(qū)動.適用PickPower/FREQ/8M Channel power/6M Channel power量測.

    labview編寫的Agilent頻譜分析儀器驅(qū)動.適用PickPower/FREQ/8M Channel power/6M Channel power量測.

    標(biāo)簽: Channel power PickPower labview

    上傳時間: 2014-01-13

    上傳用戶:zq70996813

  • Labview編寫的Advantest系列頻譜分析儀驅(qū)動.適用機型U3751/3131A.可做FREQ/Pick power/ Channel power量測.

    Labview編寫的Advantest系列頻譜分析儀驅(qū)動.適用機型U3751/3131A.可做FREQ/Pick power/ Channel power量測.

    標(biāo)簽: power Advantest Labview Channel

    上傳時間: 2014-03-12

    上傳用戶:kbnswdifs

  • MSP430 LMX2326 sends 24 specified bits for LMX2326 SynthBuf[0] identical for three groups of FREQ,

    MSP430 LMX2326 sends 24 specified bits for LMX2326 SynthBuf[0] identical for three groups of FREQ,Ref and Init

    標(biāo)簽: 2326 LMX for identical

    上傳時間: 2014-01-21

    上傳用戶:qazxsw

  • it will make the sinosoidal wave forms after you input the values of phase,FREQ,delay and sampling i

    it will make the sinosoidal wave forms after you input the values of phase,FREQ,delay and sampling intervals

    標(biāo)簽: sinosoidal the sampling values

    上傳時間: 2014-01-17

    上傳用戶:GHF

  • 這是MCUMK7A22P的FREQ輸出實用例子程序

    這是MCUMK7A22P的FREQ輸出實用例子程序,希望對大家有所幫助。

    標(biāo)簽: MCUMK7 MCUMK FREQ 22P

    上傳時間: 2013-12-21

    上傳用戶:songyue1991

  • 單相交流串勵電動機溫升計算和振動分析

    單相交流串勵電動機由于啟動轉(zhuǎn)矩大、轉(zhuǎn)速高、體積小等一系列的特點,在電動工具、家用電器,尤其是小家電和吸塵器上獲得了十分廣泛的應(yīng)用。論文對單相交流串勵電動機的發(fā)熱和振動特性進(jìn)行研究。 在第二章,通過討論電機的發(fā)熱理論及其影響因素,結(jié)合實際建立了數(shù)學(xué)模型,推導(dǎo)得出一個工程上比較實用的公式,用來計算馬達(dá)堵轉(zhuǎn)時的溫升,還編寫了一個電腦程序來仿真計算馬達(dá)堵轉(zhuǎn)時的溫升。 在第三章,討論了電機轉(zhuǎn)子和支撐組成的振動系統(tǒng)在多自由度和各種情況下的振動。應(yīng)用杜哈梅積分式和傅立葉分析法將機械振動和電磁干擾聯(lián)系起來,將機械振動問題轉(zhuǎn)化為二階電路的問題來進(jìn)行處理。并且提出觀點:1.先測量出機械振動的頻譜圖或電磁噪音的Db-FREQ頻譜圖,再用反傅立葉分解的方法將它們合成,得到周期性的激勵的形狀。2.由激勵(力信號或電信號)所產(chǎn)生的波在弦內(nèi)進(jìn)行傳播,信號經(jīng)過衰減,輻射,在邊界處反射,然后跟下一列波迭加,直到成為穩(wěn)定的干擾信號。 在第四章,對樣機進(jìn)行測試,并和電腦仿真結(jié)果進(jìn)行了比較。結(jié)果表明二者的偏差在2.5%以內(nèi)。

    標(biāo)簽: 單相交流 電動機 溫升計算

    上傳時間: 2013-07-31

    上傳用戶:csgcd001

  • SPWM用于控制三相交流電機的程序(北京工業(yè)大學(xué))

    ·給大家發(fā)個用C語言寫的,是個開環(huán)的。可用模擬示波器看波形的正弦波頻率等參數(shù),如果用數(shù)字示波器看波形,用電阻和電容搭一個低通濾波器,然后再看波形。程序中的FREQ為頻率變量,改變其可改變波形的頻率。建議在做電機實際控制器頻率在10Hz~50Hz之間調(diào)節(jié),否則后果自負(fù)。

    標(biāo)簽: SPWM 控制 三相交流 工業(yè)

    上傳時間: 2013-04-24

    上傳用戶:llandlu

  • 射頻集成電路設(shè)計John Rogers(Radio FREQ

    Radio FREQuency Integrated Circuit Design I enjoyed reading this book for a number of reasons. One reason is that itaddresses high-speed analog design in the context of microwave issues. This isan advanced-level book, which should follow courses in basic circuits andtransmission lines. Most analog integrated circuit designers in the past workedon applications at low enough FREQuency that microwave issues did not arise.As a consequence, they were adept at lumped parameter circuits and often notcomfortable with circuits where waves travel in space. However, in order todesign radio FREQuency (RF) communications integrated circuits (IC) in thegigahertz range, one must deal with transmission lines at chip interfaces andwhere interconnections on chip are far apart. Also, impedance matching isaddressed, which is a topic that arises most often in microwave circuits. In mycareer, there has been a gap in comprehension between analog low-FREQuencydesigners and microwave designers. Often, similar issues were dealt with in twodifferent languages. Although this book is more firmly based in lumped-elementanalog circuit design, it is nice to see that microwave knowledge is brought inwhere necessary.Too many analog circuit books in the past have concentrated first on thecircuit side rather than on basic theory behind their application in communications.The circuits usually used have evolved through experience, without asatisfying intellectual theme in describing them. Why a given circuit works bestcan be subtle, and often these circuits are chosen only through experience. Forthis reason, I am happy that the book begins first with topics that require anintellectual approach—noise, linearity and filtering, and technology issues. Iam particularly happy with how linearity is introduced (power series). In therest of the book it is then shown, with specific circuits and numerical examples,how linearity and noise issues arise.

    標(biāo)簽: Rogers Radio John FREQ

    上傳時間: 2014-12-23

    上傳用戶:han_zh

  • 計算ARMA(p

    計算ARMA(p,q)模型的功率譜密度。 形參說明: b——雙精度實型一維數(shù)組,長度為(q+1),存放ARMA(p,q)模型的滑動平均系數(shù)。 a——雙精度實型一維數(shù)組,長度為(p+1),存放ARMA(p,q)模型的自回歸系數(shù)。 q——整型變量,ARMA(p,q)模型的滑動平均階數(shù)。 p——整型變量,ARMA(p,q)模型的自回歸階數(shù)。 sigma2——雙精度實型變量,ARMA(p,q)模型白噪聲激勵的方差。 fs——雙精度實型變量,采樣頻率(Hz)。 x——雙精度實型一維數(shù)組,長度為len。當(dāng)sign=0時,存放功率譜密度;當(dāng)sign= 1時,存放用分貝表示的功率譜密度。 FREQ——雙精度實型一維數(shù)組,長度為len。存放功率譜密度所對應(yīng)的頻率。 len——整型變量,功率譜密度的數(shù)據(jù)點數(shù)。 sign——整型變量,當(dāng)sign=0時,計算功率譜密度;當(dāng)sign=1時,計算用分貝表 示的功率譜密度。

    標(biāo)簽: ARMA 計算

    上傳時間: 2015-04-09

    上傳用戶:qiao8960

  • design LP,HP,B S digital Butterworth and Chebyshev filter. All array has been specified internally

    design LP,HP,B S digital Butterworth and Chebyshev filter. All array has been specified internally,so user only need to input f1,f2,f3,f4,fs(in hz), alpha1,alpha2(in db) and iband (to specify the type of to design). This program output hk(z)=bk(z)/ak(z),k=1,2,..., ksection and the FREQ.

    標(biāo)簽: Butterworth internally Chebyshev specified

    上傳時間: 2015-11-08

    上傳用戶:253189838

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