How do I solve "Error in port widths or dimensions" error in Simulink?

4 次查看（过去 30 天）
Flavio Clarizia
Flavio Clarizia 2020-10-1
编辑： Flavio Clarizia 2020-10-3
d
  5 个评论
显示 3更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Ankit
Ankit 2020-10-2
function input = C_REG(q)
% global k_1 k_2
x=q(1);
y=q(2);
theta=q(3);
e_p=[-x -y];
sag=[cos(theta);sin(theta)];
gamma=atan2(y,x)-theta+pi;
% driving velocity
v=k_1*e_p.*sag;
% steering velocity
omega=k_2*gamma;
input = [v;omega];
you have to careful with matrix/vector multiplication. your e_p [1 x2 ] and sag [2x1] --> multiplication of e_p and sag gives a matrix of [2x2] and multiply with k1 [1] results in a vector of [1x2] --> driving velocity
and similarly omega is a scalar.
Could you please explain what is your expected output ? steering velocity vector or scalar.
and similary driving velocity?
  5 个评论
显示 3更早的评论
Ankit
Ankit 2020-10-2
Hi no problem.
you have to correctly define your inputs.
I tried the following:
function [input1,input2] = C_REG(q)
global k_1 k_2
x=q(1);
y=q(2);
theta=q(3);
e_p=[-x -y];
sag=[cos(theta);sin(theta)];
gamma=atan2(y,x)-theta+pi;
% driving velocity
v=k_1.*e_p.*sag;
% steering velocity
omega=k_2*gamma;
input1 = v;
input2 = omega;
As I am not aware to your problem statement but you just need to see your sizes of inputs and outputs are correct!
omega is a scalar or vector?
as you see your v is a vector and omega is a scalar currently. You are not allowed to do the following
input = [v;omega]; % Dimensions of arrays being concatenated are not consistent so you will get an error.
Ankit
Ankit 2020-10-2
try this. as you mentioned your v and omega are scalar following will work. let me know if it is clear now?
function input = C_REG(q)
global k_1 k_2
x=q(1);
y=q(2);
theta=q(3);
e_p=[-x -y];
sag=[cos(theta);sin(theta)];
gamma=atan2(y,x)-theta+pi;
% driving velocity
v=k_1*e_p*sag; % now it is scalar
% steering velocity
omega=k_2*gamma; % scalar
input = [v;omega]; % it is allowed

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Monte Carlo Analysis 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by