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cross-validation

  • Cluster validation program including Dunn s index, Davies-Bouldin Index and Scat-Dis index.

    Cluster validation program including Dunn s index, Davies-Bouldin Index and Scat-Dis index.

    標(biāo)簽: index Davies-Bouldin validation including

    上傳時間: 2017-09-01

    上傳用戶:大三三

  • Cluster validation program

    Cluster validation program

    標(biāo)簽: validation Cluster program

    上傳時間: 2013-12-07

    上傳用戶:daguda

  • Cross-correlation of several signals

    Cross-correlation of several signals

    標(biāo)簽: Cross-correlation several signals of

    上傳時間: 2017-09-19

    上傳用戶:我們的船長

  • Sample algorithm for credit card validation

    Sample algorithm for credit card validation

    標(biāo)簽: validation algorithm Sample credit

    上傳時間: 2013-12-17

    上傳用戶:cjf0304

  • 互相關(guān)函數(shù),cross-correlation function

    互相關(guān)函數(shù),cross-correlation function

    標(biāo)簽: cross-correlation function 函數(shù)

    上傳時間: 2017-09-28

    上傳用戶:huannan88

  • cross-correlation function

    cross-correlation function

    標(biāo)簽: cross-correlation function

    上傳時間: 2017-09-28

    上傳用戶:kr770906

  • 互相關(guān)函數(shù),cross-correlation function

    互相關(guān)函數(shù),cross-correlation function

    標(biāo)簽: cross-correlation function 函數(shù)

    上傳時間: 2017-09-28

    上傳用戶:ecooo

  • 1602.rar

    1602顯示程序 顯示CROSS FIRE 基于8051系列單片機(jī) 附電路圖

    標(biāo)簽: 1602

    上傳時間: 2013-07-16

    上傳用戶:lw852826

  • 三相固能繼電器

    Specification: 輸入信號:DC9-32V&AC100-240V 適用負(fù)載:電熱負(fù)載,電感負(fù)載 控制方式:零點(diǎn)觸發(fā)(Zero cross turn-on) 輸入額定電壓:AC 110-440±10% 輸入額定電流:200-400A 使用頻率:50/60Hz 使用環(huán)境:-10℃-50℃ 90%RH 冷卻方式:風(fēng)冷式

    標(biāo)簽: 三相 繼電器

    上傳時間: 2013-11-14

    上傳用戶:拔絲土豆

  • 基于開關(guān)電容技術(shù)的鎖定放大器設(shè)計(jì)

    鎖定放大是微弱信號檢測的重要手段。基于相關(guān)檢測理論,利用開關(guān)電容的開關(guān)實(shí)現(xiàn)鎖定放大器中乘法器的功能,提出開關(guān)電容和積分器相結(jié)合以實(shí)現(xiàn)相關(guān)檢測的方法,并設(shè)計(jì)出一種鎖定放大器。該鎖定放大器將微弱信號轉(zhuǎn)化為與之相關(guān)的方波,通過后續(xù)電路得到正比于被測信號的直流電平,為后續(xù)采集處理提供方便。測量數(shù)據(jù)表明鎖定放大器前級可將10-6 A的電流轉(zhuǎn)換為10-1 V的電壓,后級通過帶通濾波器級聯(lián)可將信號放大1×105倍。該方法在降低噪聲的同時,可對微弱信號進(jìn)行放大,線性度較高、穩(wěn)定性較好。 Abstract:  Lock-in Amplifying(LIA)is one of important means for weak signal detection. Based on cross-correlation detection theory, switch in the swithched capacitor was used as multiplier of LIA, and a new method of correlation detection was proposed combining swithched capacitor with integrator. A kind of LIA was designed which can convert the weak signal to square-wave, then DC proportional to measured signal was obtained through follow-up conditioning circuit, providing convenience for signal acquisition and processing. The measured data shows that the electric current(10-6 A) can be changed into voltage(10-1 V) by LIA, and the signal is magnified 1×105 times by cascade band-pass filter. The noise is suppressed and the weak signal is amplified. It has the advantages of good linearity and stability.

    標(biāo)簽: 開關(guān)電容 鎖定放大器

    上傳時間: 2013-11-29

    上傳用戶:黑漆漆

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