MATLAB如何求传递函数的幅值？传递函数幅值计算教程

时间过得真快呀，都一年了...找到解决的办法了么？

最近我也遇到了这样的困惑：

1.这是AP model300 得到的二进制数据(部分数据，从控制到输出)：

FrequencyMag [B/A]Phase [B-A]

+1.00000000000000E+002+3.91455563839069E+001-1.01969462816122E+001

+1.07980102982581E+002+3.98117044483954E+001-1.81932668271684E+001

+1.16597026401288E+002+3.96624915476285E+001-1.60222005911579E+001

+1.25901589182738E+002+4.09530995315944E+001-1.24734757901962E+001

+1.35948665656227E+002+3.96418068889228E+001-9.16237367581058E+000

+1.46797509179039E+002+3.89712438344601E+001-1.97426963866525E+001

+1.58512101587390E+002+3.82071166331900E+001-1.30505149092162E+001

+1.71161530533917E+002+3.88382273182118E+001-2.54512249172559E+001

+1.84820396937086E+002+3.90829242068583E+001-1.88392533996029E+001

+1.99569254945481E+002+3.87857955047517E+001-2.04547329392012E+001

+2.15495087011700E+002+3.93192862645319E+001-2.37652029654547E+001

+2.32691816877636E+002+3.91485543212367E+001-1.92159095799770E+001

+2.51260863496511E+002+3.83445363671859E+001-2.94395306356088E+001

+2.71311739158455E+002+3.94676711809476E+001-2.12680586526082E+001

+2.92962695347131E+002+3.89748697310099E+001-2.21343006439088E+001

+3.16341420136378E+002+3.84330763059343E+001-3.17994148839674E+001

+3.41585791239820E+002+4.41784539909881E+001-6.62666621576639E+001

+3.68844689154622E+002+3.87106487971159E+001-3.45301588874930E+001

+3.98278875194943E+002+4.23673676279062E+001-4.19462234722377E+001

+4.30061939593365E+002+3.75233510487886E+001-3.35775467600633E+001

+4.64381325261801E+002+3.58490696909162E+001-6.07311255930655E+001

+5.01439433249568E+002+3.70314717268946E+001-3.77356824265087E+001

+5.41454816418154E+002+3.75117293909297E+001-3.52418738005879E+001

+5.84663468372469E+002+3.57098951357703E+001-5.59956330946041E+001

+6.31320215250122E+002+3.77111852945430E+001-3.59604519764281E+001

2导入到Mathcad：

疑惑：有什么方法可以拟合出传函么？

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