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生成尼柯尔斯图

根据传递函数或模型生成幅值与相位的尼柯尔斯（Nichols）图.

    
Wolfram Language code: NicholsPlot[(4 (s + 0.5)) / (s ^ 2 (s ^ 2 + 2 s + 4)), Frame -> True, PlotStyle -> Directive[AbsoluteThickness[4], ColorData[24, 9]], NicholsGridLines -> {{#, Directive[Dashed, Darker@ColorData[24, 2]]}& /@ {1.01, 1.05, 1.1, 1.25, 1.5, 1.75, 2.25, 3, 4}, {#, Directive[Dotted, Darker@ColorData[24, 6]]}& /@ ({1 / 2, 1, 2, 5, 10, 15, 25, 50, 75, -1 / 2, -1, -2, -5, -10, -15, -25, -50, -75} Degree)}]