进行Simulink仿真单摆运动时出现错误:Error, M-File S-function 'simpendzzy' in 'exm_1/S-Function' is expecting 0 parameter(s) while 3 were provided
以下是具体的m函数:
function [sys,x0,str,ts] = sfuntmpl(t,x,u,flag)
switch flag,
case 0,
[sys,x0,str,ts]=mdlInitializeSizes(angzzy);
case 1,
sys=mdlDerivatives(t,x,u,dampzzy,gravzzy);
case 2,
sys=mdlUpdate(t,x,u);
case 3,
sys=mdlOutputs(t,x,u);
case 9,
sys=mdlTerminate(t,x,u);
otherwise
error(['Unhandled flag = ',num2str(flag)]);
end
function [sys,x0,str,ts]=mdlInitializeSizes(angzzy)
sizes = simsizes;
sizes.NumContStates = 2;
sizes.NumDiscStates = 0;
sizes.NumOutputs = 1;
sizes.NumInputs = 1;
sizes.DirFeedthrough = 0;
sizes.NumSampleTimes = 1;
sys = simsizes(sizes);
x0 = angzzy;
str = [];
ts = [0 0];
function sys=mdlDerivatives(t,x,u,dampzzy,gravzzy)
dx(1)=-dampzzy*x(1)-gravzzy*sin(x(2))+ u;
dx(2)=x(1);
sys = dx;
function sys=mdlUpdate(t,x,u)
sys = [];
function sys=mdlOutputs(t,x,u)
sys = x(2);
function sys=mdlTerminate(t,x,u)
sys = [];
将第一行改成
function [sys,x0,str,ts] = simpendzzy(t,x,u,flag,dampzzy,gravzzy,angzzy)
还是不行,出现错误:Error evaluating parameter 'dampzzy' in 'exm_1/S-Function': Undefined function or variable 'dampzzy'