The two - order volterra model can be identified with the correlation analysis and frequency - domain analysis when the input is gaussian white noise 通過相關(guān)分析、頻域分析,采用高斯白噪聲輸入信號,可以對二階volterra模型進(jìn)行辨識。
Based on analytical study of lots of existing methods of detecting current , this paper presents a frequency - domain analysis method , which adapts accomplished by dsp ( digital signals processor ) . simulation results are presented 本論文在研究分析現(xiàn)有各種電流檢測方法的基礎(chǔ)上,提出了一種適合dsp實(shí)現(xiàn)的改進(jìn)頻譜分析方法,并在此基礎(chǔ)上建立了一套完整的電流檢測電路裝置。
In order to design the parameter of error amplifier , the small signal model is derived for arc welding inverter using state - space averaging , and frequency - domain analysis is performed to complete the parameter design 為了設(shè)計(jì)控制系統(tǒng)中誤差放大器的參數(shù),利用狀態(tài)空間平均法建立了電源系統(tǒng)的低頻小信號數(shù)學(xué)模型,進(jìn)而利用控制理論中的頻域分析法設(shè)計(jì)了系統(tǒng)的補(bǔ)償網(wǎng)絡(luò),即誤差放大器的參數(shù)。
In the thesis , a functional software was developed for auto - analyzing the field evoked potential , which can automatically measure the time domain parameters such as the amplitude area latency of population spikes , the slope of excitatory postsynaptic potential and so on , it also can make the frequency - domain analysis 它可以自動(dòng)、快速地測出海馬誘發(fā)場電位的時(shí)域參數(shù),如:群體峰電位( populationspikes , ps )的幅度、面積、潛伏期以及興奮性突觸后電位( excitatorypostsynapticpotentials , epsp )的斜率等,同時(shí)也可以對信號進(jìn)行頻域分析和處理。
The error reasons of low resistance measurement are studied , the theory of removing line resistance error proves to be right with time - domain analysis method and frequency - domain analysis method , and the results proved to be true by the experiment datum with the statistics method 研究了低電阻檢測時(shí)產(chǎn)生系統(tǒng)誤差的原因,分別用時(shí)域和復(fù)頻域兩種方法分析了在低電阻檢測時(shí)消除附加電阻誤差的原理;并通過兩組實(shí)驗(yàn)數(shù)據(jù)用數(shù)理統(tǒng)計(jì)的方法驗(yàn)證了附加電阻誤差影響已經(jīng)被消除的結(jié)論。
The matlab / simulink software was used to analyze the dynamic characteristics of torque motor . the time - domain and frequency - domain analysis were came out when the parameters of torque motor and magnetic fluid changed . a high speed laser displacement sensor was used to do experiment research on frequency response of torque motor with magnetic fluid and without magnetic fluid 本文對不添加磁流體和添加磁流體的力矩馬達(dá)數(shù)學(xué)模型進(jìn)行了研究,采用matlab / simulink仿真軟件,分析了力矩馬達(dá)及磁流體參數(shù)變化時(shí),力矩馬達(dá)的動(dòng)態(tài)特性,給出了時(shí)域和頻域分析結(jié)果;采用高速激光位移傳感器,對不添加磁流體和添加磁流體時(shí),力矩馬達(dá)的頻率響應(yīng)進(jìn)行了實(shí)驗(yàn)研究,從而對數(shù)學(xué)模型及仿真方法進(jìn)行了驗(yàn)證。