getting "Not enough Input arguments" for this code. Can some one help
显示 更早的评论
function yp=qcar(t,z)
M=1000;
m=100;
Cs=1000;
Ks=36000;
Kt=360000;
R=150;
yp=zeros(4,1);
yp(1)=z(2);
yp(2)=-1/M*[Ks(z(1)-z(3))+Cs(z(2)-z(4))];
yp(3)=z(4);
yp(4)=-1/m*[Ks(z(1)-z(3))+Cs(z(2)-z(4))-Kt(z(3)-R)];
And in another .m file
z0=[0,0,0,0];
[t,z]=ode113(qcar,[0:0.2:10],f0);
plot(t,z);
2 个评论
Madhavan Pillai
2017-8-23
It is much simpler for you to use the debugger and figure out that error on your own.
dbstop if error
Run your code and then look at the offending variables whenever it crashes. The error should become obvious.
Learn to use the debugger, it will save you a lot of grief and time in the future.
采纳的回答
KSSV
2017-8-23
You made multiple mistakes in the function: I have rectified them check it.
z0=[0,0,0,0];
[t,z]=ode113(@qcar,[0:0.2:10],z0);
plot(t,z);
function yp=qcar(t,z)
M=1000;
m=100;
Cs=1000;
Ks=36000;
Kt=360000;
R=150;
yp=zeros(4,1);
yp(1)=z(2);
yp(2)=-1/M*[Ks*(z(1)-z(3))+Cs*(z(2)-z(4))];
yp(3)=z(4);
yp(4)=-1/m*[Ks*(z(1)-z(3))+Cs*(z(2)-z(4))-Kt*(z(3)-R)];
end
4 个评论
Madhavan Pillai
2017-8-23
KSSV
2017-8-23
That's what I have mentioned....you made few errors..I have gave you correct code above in the answer..The above given code will work.
The given line,
@yp(2) =-1/M*[Ks(z(1)-z(3)+Cs(z(2)-z(4))];
In the above line, you are trying to access some elements of Ks...Z(1)-Z(3) will be zero and there is no zero index in matlab..moreover your Ks is a scalar. Please go through the above code...which I have given.
Madhavan Pillai
2017-8-23
KSSV
2017-8-23
You are welcome....
Will be needing more help with complex problems in coming days I advice you to learn MATLAB which is very easy..instead of posting in the forum..use this forum for major issues when you get stuck.
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