MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Discover what MATLAB® can do for your career.

 Subject: Nyquist plot From: NeB Date: 15 Mar, 2006 06:13:42 Message: 1 of 5 In control system engeneering, I would like to plot the Nyquist chart of an analogue active filter that I have simulate on an electronic software. This software give me the data of gain and phase (bode plot) of my filter and I would like to use MatLAB to plot the Nyquist diagram with this Data. How can I do that ?? I have any Transfert function of the filter.
 Subject: Nyquist plot From: Joerg J. Buchholz Date: 15 Mar, 2006 05:13:21 Message: 2 of 5 NeB, Homework? If you have the transfer function of the filter, use "nyquist". If you have gain and phase data, use "polar". Joerg
 Subject: Nyquist plot From: NeB Date: 16 Mar, 2006 07:01:21 Message: 3 of 5 Thks It's for my final year project of my degree !! But when I plot a polar graph with theta my phase angle in radians and rho the magnitude I don't obtain a graph who look like to a Nyquist plot. I need to perform in this way but if anyone have already do that I'm interesting.
 Subject: Nyquist plot From: tim Date: 17 Aug, 2012 18:32:06 Message: 4 of 5 Hello I have the same issue. I have Bode plot data from an instrument that I would like to turn into bode plots and nqyuist plots in matlab. Is there a way to turn my Bode data into a continuous transfer function? Or is there a way to make a Nyuist plot directly from my data? NeB wrote in message ... > Thks > It's for my final year project of my degree !! > But when I plot a polar graph with theta my phase angle in radians > and rho the magnitude I don't obtain a graph who look like to a > Nyquist plot. > I need to perform in this way but if anyone have already do that I'm > interesting.
 Subject: Nyquist plot From: Craig Buhr Date: 22 Aug, 2012 12:33:07 Message: 5 of 5 You can take your frequency response data and create an FRD object (SYS = frd(RESPONSE,FREQS)). You can then use commands such as bode(SYS) and nyquist(SYS) to plot your data. "tim " wrote in message news:k0m2n6\$7dp\$1@newscl01ah.mathworks.com... > Hello I have the same issue. I have Bode plot data from an instrument > that I would like to turn into bode plots and nqyuist plots in matlab. Is > there a way to turn my Bode data into a continuous transfer function? Or > is there a way to make a Nyuist plot directly from my data? > > > NeB wrote in message > ... >> Thks >> It's for my final year project of my degree !! >> But when I plot a polar graph with theta my phase angle in radians >> and rho the magnitude I don't obtain a graph who look like to a >> Nyquist plot. >> I need to perform in this way but if anyone have already do that I'm >> interesting.