MATLAB: Syntax error on simulink

simulinksyntax error on simulink

I am getting an error in simulink in a Fcn block:

m*(u(1) – l*u(3)*u(3)*sin(u(2)) + l*u(4)*cos(u(2)))

Can someone help urgently. Thanks in advance.

Best Answer

Simulink Fcn blocks give syntax errors if you name variables in them that are not variables that exist in the workspace.

I suspect that either m or I or both are not currently defined.

You might tend to think that Fcn blocks would wait until execution time to look for variables existing, but if I recall correctly, they parse the string at block initialization time

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MATLAB: How to generate an .stl file from a symbolically generated 3D surface

syms u v
x = (-2/15)*cos(u)* (3*cos(v) - 30*sin(u) + 90*(cos(u))^4*sin(u) - 60*(cos(u))^6*sin(u) + 5*cos(u)*cos(v)*sin(u))
y = (-1/15)*sin(u)* (3*cos(v) - 3*(cos(u))^2*cos(v) + 48*(cos(u))^4*cos(v) - 48*(cos(u))^6*cos(v) - 60*sin(u) + 5*cos(u)*cos(v)*sin(u) - 5*(cos(u))^3*cos(v)*sin(u) - 80*(cos(u))^5*cos(v)*sin(u) + 80*(cos(u))^7*cos(v)*sin(u))
z = (2/15)*(3+5*cos(u)*sin(u))*sin(v)
figure(2)
h = ezsurf(x,y,z,[0, pi, 0, 2*pi]) ;
X = h.XData ; 
Y = h.YData ; 
Z = h.ZData ;

Now use surf2stl: https://in.mathworks.com/matlabcentral/fileexchange/4512-surf2stl X,Y,Z.

MATLAB: Syntax error in Simulink

You have a problem with brackets

(u(2)*u(3)^2)/12-((u(2)*u(3))^2)/8*(1-2*u(1)/u(3))-(1/3)*(1-2*u(1)/u(3))^3

Best Answer

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