s函数报错

勇往直前11 · 发表于 2020-9-28 11:08

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s函数报错“during flag=i call must be a real vector of length n” ，怎么解决？
代码如下：
function [sys,x0,str,ts] = PMSM_chaos_controller(t,x,u,flag)
switch flag,
case 0,
      [sys,x0,str,ts] = mdlIniticializeSizes;
case 3,
      sys = mdlOutputs(t,x,u);
case {1,2,4,9},
      sys = [];
otherwise,
      DAStudio.error('Simulink:blocks:unhandledFlag',num2str(flag));
end

function [sys,x0,str,ts] = mdlIniticializeSizes
sizes = simsizes;
sizes.NumContStates  = 3; %连续状态个数
sizes.NumDiscStates  = 0; %离散状态个数
sizes.NumOutputs    = 3; %输出变量个数
sizes.NumInputs    = 9; %输入信号个数
sizes.DiRFeedthrough = 1; %输入直接传入输出信号否
sizes.NumSampleTimes = 0; % at least one sample time is neededWO  一般来说为1个
sys = simsizes(sizes);
x0 = [0.001 0.001 0.001];
str = [];
ts = [];

function sys=mdlOutputs(t,x,u)
e1=u(1);e2=u(2);e3=u(3);
s21=u(4);s22=u(5);s1=u(6);
es_w=u(9);
alpha = 0.8;
alpha1 = 5/7; beta1 = 7/5;
alpha2 = 7/9; beta2 = 9/7;
k1 = 1;
k2 = 1.2;
miu = 10;
delta = 5.46;
%assert(all(imag(u)==0), 'u is imaginary or nan');不起作用
if e3==0
u1 = e1 - es_w*e1 - 10*((abs(e1))^alpha)*sign(e1) - 10*e1 - k2*((abs(s21))^alpha2)*sign(s21) -k2*((abs(s21))^beta2)*sign(s21) - miu*s21;
u2 = e2 - es_w*e2 - 10*((abs(e2))^alpha)*sign(e2) - 10*e2 - k2*((abs(s22))^alpha2)*sign(s22) -k2*((abs(s22))^beta2)*sign(s22) - miu*s22;
u3 = -delta*(e2-e3) - 10*((abs(e3))^alpha)*sign(e3) - 10*e3 - k1*((abs(s1))^alpha1)*sign(s1) -k1*((abs(s1))^beta1)*sign(s1) - miu*s1;
else
u1 = 0;
u2 = 0;
u3 = -delta*(e2-e3) - 10*((abs(e3))^alpha)*sign(e3) - 10*e3 - k1*((abs(s1))^alpha1)*sign(s1) -k1*((abs(s1))^beta1)*sign(s1) - miu*s1;
end
sys(1) = u1;
sys(2) = u2;
sys(3) = u3;
复制代码

Uifhjvv · 发表于 2020-9-28 13:09

帮你顶一下

小小鲁班 · 发表于 2020-9-28 13:21

你这个没有用到状态变量吧

zaiyiaaaa · 发表于 2020-9-28 14:01

你上传一下simulink仿真图？

zzz.dan · 发表于 2020-9-28 14:05

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