Parse error at '='
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Hey everyone,
I dunno what's wrong with this code, it displays this:
Error: File: der_MI.m Line: 23 Column: 8
The expression to the left of the equals sign is not a valid target for an assignment.
The codes are:
function pX=der_MI(t,X)
global R Lee Lrr Ler J V we cero Ide Sim
iae=X(1);ibe=X(2);ice=X(3);iar=X(4);ibr=X(5);icr=X(6);
wm=X(7);theta=X(8);
vae=sqrt(2)*V*sin(we*t);
vbe=sqrt(2)*V*sin(we*t-2*pi/3);
vce=sqrt(2)*V*sin(we*t-4*pi/3);
var=0;vbr=0;vcr=0;
ve=[vae;vbe;vce];vr=[var;vbr;vcr];v=[ve;vr];
ie=[iae;ibe;ice];ir=[iar;ibr;icr];ii=[ie;ir];
a=cos(theta);b=cos(theta+2*pi/3);c=cos(theta+4*pi/3);
Cic=[a,b,c;c,a,b;b,c,a];
L=[Lee,Ler*Cic;Ler*Cic',Lrr];
a=-sin(theta);b=-sin(theta+2*pi/3);c=-sin(theta+4*pi/3);
Cic=[a,b,c;c,a,b;b,c,a];
dL=[cero,Ler*Cic;Ler*Cic',cero];
pii = ...;
pwm = ...; %THIS IS WHERE IT SAYS THERE IS THE ERROR
ptheta = ...;
pX=[pii;pwm;ptheta];
end
And this is the main code:
% Modelo de la máquina de inducción en coordenas primitivas
clear all
clc
global R Lee Lrr Ler J V we cero Ide Sim
Re=0.02;Rr=0.03;Lde=0.1;Ldr=0.1;Lme=2;Lmr=2;Ler=2;J=800;
V=1;we=1; % parametros están en por unidad
% R = [Re,0,0,0,0,0;
% 0,Re,0,0,0,0;
% 0,0,Re,0,0,0;
% 0,0,0,Rr,0,0;
% 0,0,0,0,Rr,0;
% 0,0,0,0,0,Rr]
R=diag([Re,Re,Re,Rr,Rr,Rr]);
Sim=[1 -0.5 -0.5;-0.5 1 -0.5;-0.5 -0.5 1];
Ide=eye(3);
cero=zeros(3,3);
Lee=Lde*Ide+Lme*Sim;
Lrr=Ldr*Ide+Lmr*Sim;
t0=0; tf=2*377; % Tiempos en por unidad
X0=[0,0,0,0,0,0,0,0];%[iae(0) ibe(0) ice(0) iar(0) ibr(0) icr(0) wm(0) theta(0)
tic
[T,X]=ode23(@der_MI,[t0 tf],X0)
toc
iae=X(:,1);ibe=X(:,2);ice=X(:,3);
iar=X(:,4);ibr=X(:,5);icr=X(:,6);
wm=X(7);theta=X(8);
figure(1)
plot(T/377,X(:,7))
xlabel('tiempo [s]')
ylabel('w_m [pu]')
grid
for n=1:length(T)
ie=[iae(n);ibe(n);ice(n)];
ir=[iar(n);ibr(n);icr(n)];
dCic=... theta(n)
Te(n)==Ler*ie'*dCic*ir
end
figure(2)
plot(T,Te)
What do u think could be?
回答（1 个）
Walter Roberson
2018-12-29
0 个投票
the ... on the line above is continuation . So you effectively have
pii = pwm = ptheta = pX = [something]
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2018-12-29
2018-12-29
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