Effacer les filtres
Effacer les filtres

to obtain contour plots

5 vues (au cours des 30 derniers jours)
Prashanth Nayak
Prashanth Nayak le 27 Avr 2016
Hi,
I am trying to obtain the IPMSM Flux weakening characteristics with matlab code. I could able to get required circle and ellipse but i could not get the black line in the pic which i have attached. Here is my code. Can u please rectify the problem.
Thank you
matlab code:
clear all;
close all;
clc;
x=0;
y=0;
r=355;
hold on
th = 0:pi/50:2*pi;
xunit = r*cos(th)+x;
yunit = r*sin(th)+y;
h=plot(xunit, yunit,'blue');
axis('equal');
hold on;
[m,n]=meshgrid(-500:500,-500:500);
p=(((m+299).^2)/5814.25+((n.^2)/2517.2));
contour(m,n,p,10);
[c,h]=contour(m,n,p,10,'red');
%clabel(c,h);
hold on;
Ld=(0.349e-3);
Lq=(0.806e-3);
[m,n]=meshgrid(250:-350, 187:353);
t=0.6276*n-(0.000457*m*n);
contour(m,n,t,10);
[c,h]=contour(m,n,t,'black');
%clabel(c,h);
hold off;
grid on;
regards, Prashanth

Réponses (2)

KSSV
KSSV le 27 Avr 2016
Modifié(e) : KSSV le 27 Avr 2016
change
[m,n]=meshgrid(250:-350, 187:353);
t=0.6276*n-(0.000457*m*n);
to
[m,n]=meshgrid(250:-1:-350, 187:353);
t=0.6276*n-(0.000457*m*n);
Though black lines appear it is not like the attached png.
  3 commentaires
KSSV
KSSV le 27 Avr 2016
Friend...I am not aware what the problem is...I only edited the code mistake....
Prashanth Nayak
Prashanth Nayak le 28 Avr 2016
Ok fine..

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Raghunath Rachabattuni
Raghunath Rachabattuni le 30 Juin 2023
You can use the commandline utilities that are shipped with Motor Control Blockset. Please refer to the following links to explore the constraint curves and also how to use them.

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