24小时热门版块排行榜

返回列表

林传统

铜虫 (初入文坛)

应助: 0 (幼儿园)
金币: 89.8
帖子: 14
在线: 7.8小时
虫号: 3102238
注册: 2014-03-31
专业: 控制理论与方法

[求助] 想把m文件在simulink 中的调用，我用的是matlab function 模块。

RT 我的m文件的代码是function  h_vs= fcn(T_s)
B13=  [-575.520*10^-4  117.700*10^-5 491.369*10^-8    782.701*10^-2 -815.233*10^-3    256.383*10^-4    149.856*10^-1 -209.283*10^-2];
a=zeros(1,8);
for i=1:8
a(i)=B13(i);
end
coder.extrinsic('syms');
syms  h_vs u v;
T_s=T_s+273.15-61;
v=T_s-203.15;
u=(h_vs-350)^0.5-2.24076;
x=solve(u^3+a(1)*u^2*v+a(2)*u*v^2+a(3)*v^3+a(4)*u^2+a(5)*u*v+a(6)*v^2+a(7)*u+a(8)*v,h_vs);
y=max (real (double (subs(x))));
h_vs=y;
end
  复制到matlab function中想要调用却出现如下8个错误：

Simulink does not have enough information to determine output sizes for this block. If you think the errors below are inaccurate, try specifying types for the block inputs and/or sizes for the block outputs.
Component: MATLAB Function | Category: Coder error
Undefined function or variable 'h_vs'. The first assignment to a local variable determines its class.

Function 'MATLAB Function' (#71.303.307), line 12, column 4:
"h_vs"
Launch diagnostic report.
Component: MATLAB Function | Category: Coder error
Undefined function or variable 'u'. The first assignment to a local variable determines its class.

Function 'MATLAB Function' (#71.334.335), line 13, column 9:
"u"
Launch diagnostic report.
Component: MATLAB Function | Category: Coder error
Undefined function or variable 'x'. The first assignment to a local variable determines its class.

Function 'MATLAB Function' (#71.443.444), line 14, column 27:
"x"
Launch diagnostic report.
Component: MATLAB Function | Category: Coder error
Undefined function or variable 'y'. The first assignment to a local variable determines its class.

Function 'MATLAB Function' (#71.455.456), line 15, column 6:
"y"
Launch diagnostic report.
Component: MATLAB Function | Category: Coder error
Errors occurred during parsing of MATLAB function 'MATLAB Function'
Component: MATLAB Function | Category: Coder error
Errors occurred during parsing of MATLAB function 'MATLAB Function'
Component: Simulink | Category: Block error
Error occurred in 'sim_hvs/MATLAB Function'.
Component: Simulink | Category: Block error

图片在附件；
求大神解决

捕获.PNG

回复此楼