MATLAB: How to find Y from X. (Laplace)

gauss

How to find temperature, Tm at time t = 15 seconds

>> y1 = tf(1, [1 1]);

>> y2 = tf(1, [1 1], 'inputdelay', 10);

>> Tm = 10*y1 – 20*y2 + 130;

>> step(Tm)

Best Answer

y1 = tf(1, [1 1]); 
y2 = tf(1, [1 1], 'inputdelay', 10); 
Tm = 10*y1 - 20*y2 + 130; 
step( Tm) 
[Tmvalues, tOut] = step(Tm);
Tm15 = interp1(tOut, Tmvalues, 15)
Tm15 = 120.1348

Related Solutions

MATLAB: Second Order, Piecewise ODE help

fun=@(t,y)[y(2);-4*y(1)];
y0=[0 0];
tspan=[0 5];
[T1,Y1]=ode45(fun,tspan,y0);
fun=@(t,y)[y(2);-4*y(1)+(t-5)/5;
y0=[Y1(end,1) Y1(end,2)];
tspan=[T1(end) 10];
[T2,Y2]=ode45(fun,tspan,y0);
fun=@(t,y)[y(2);-4*y(1)+1];
y0=[Y2(end,1) Y2(end,2)];
tspan=[T2(end) 20];
[T3,Y3]=ode45(fun,tspan,y0);

Now put T1, T2, T3 and Y1, Y2, Y3 together to get the result of your ODE on [0 20].

Best wishes

Torsten.

MATLAB: How to select a row vector with maximum fitness value if few of vectors are restricted to consider

NS(:,:,1) =  [6     1     1     1     1];
NS(:,:,2) =  [5     3     1     1     1];
NS(:,:,3) =  [5     1     8     1     1];
NS(:,:,4) =  [5     1     1     3     1];
NS(:,:,5) =  [5     1     1     1     7];
NS = squeeze(NS)' ;
newResultTF(:,:,1) =  104 ;
newResultTF(:,:,2) =  101 ;
newResultTF(:,:,3) =  95 ;
newResultTF(:,:,4) =  103 ;
newResultTF(:,:,5) =  89 ;
maxdata = squeeze(newResultTF)' ;
[val,id] = sort(maxdata,'descend') ;
TM(:,:,1) =  [6     1     1     1     1] ;
TM(:,:,2) =  [5     1     8     1     1] ;
TM = squeeze(TM)' ;
for i = 1:length(maxdata)
    if ~ismember(NS(id(i),:),TM,'rows')
        iwant = NS(id(i),:) ;
        break
    end
end

Best Answer

Related Solutions

MATLAB: Second Order, Piecewise ODE help

MATLAB: How to select a row vector with maximum fitness value if few of vectors are restricted to consider

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