Is there any command to calculate both the downside and upside gain margins from the Nyquist plot

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upinderjeet 2014-5-11

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https://ww2.mathworks.cn/matlabcentral/answers/129149-is-there-any-command-to-calculate-both-the-downside-and-upside-gain-margins-from-the-nyquist-plot

I understand we can use the command 'margin(sys)' to get the gain margin of the system. But as you all know some systems might have a down side gain margin as well. So just trying to find the command for that.

Thanks

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Is there any command to calculate both the downside and upside gain margins from the Nyquist plot

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Is there any command to calculate both the downside and upside gain margins from the Nyquist plot

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