s函数有全局变量吗？

csu2020

我在仿真的时候需要一个变量统计一下次数，可是始终找不到这样一个变量，每次都重新来，哪位可以帮忙？或者可否有其他方法实现

csu2020

function [sys,x0,str,ts] = torquecalc(t,x,u,flag)
%
% The following outlines the general structure of an S-function.
%
switch flag,
  case 0,
    [sys,x0,str,ts]=mdlInitializeSizes;
  case 1,
    sys=mdlDerivatives(t,x,u);
  case 2,
    sys=mdlUpdate(t,x,u);
  case 3,
    sys=mdlOutputs(t,x,u);
  case 4,
    sys=mdlGetTimeOfNextVarHit(t,x,u);
  case 9,
    sys=mdlTerminate(t,x,u);
  otherwise
    error(['Unhandled flag = ',num2str(flag)]);
end

%
function [sys,x0,str,ts]=mdlInitializeSizes
%
sizes = simsizes;

sizes.NumContStates  = 0;
sizes.NumDiscStates  = 0;
sizes.NumOutputs     = 1;
sizes.NumInputs      = 2;
sizes.DirFeedthrough = 1;
sizes.NumSampleTimes = 1;   % at least one sample time is needed

sys = simsizes(sizes);

x0  = [];

str = [];

ts  = [-1  0];
%
function sys=mdlDerivatives(t,x,u)

sys = [];
%
function sys=mdlUpdate(t,x,u)

sys = [];

%
function sys=mdlOutputs(t,x,u)
%   
sudu=u(1);
sflux=u(2);
   if (sudu<760)
   % b=b+1;
   a=0;
   end
if (sflux==0||sflux==pi/3||sflux==2*pi/3||sflux==3*pi/3||sflux==4*pi/3||sflux==5*pi/3&&sudu>=750)
   % b=b+1;
   a=1;
end
%if(rem(x(1),2)==0)
%   a=1;
%end

sys(1)=a;
   
   
%
function sys=mdlGetTimeOfNextVarHit(t,x,u)

sampleTime = 1;    %  Example, set the next hit to be one second later.
sys = t + sampleTime;
%
function sys=mdlTerminate(t,x,u)

sys = [];

% end mdlTerminate

csu2020

顶啊，在线等

csu2020

顶，没人会吗？

highway09

同求 楼主解决了吗