Can I use "place" function to adaptively update controller gain K when running model in Simulink?

2 次查看(过去 30 天)
I am running my model in Simulink, then send some information to the Matlab function which is used for updating controller gain K. In Matlab function, I call another m file from Matlab environment which has "place" function inside. The error is "place" is not supported for code generation.
How can I solve that problem?

回答(1 个)

Sam Chak
Sam Chak 2025-5-14
If the place() function is not supported for code generation, you will need to program the computation manually. After all, the essence of the pole placement technique, in mathematical terms, is fundamentally about solving algebraic equations.
%% system
A = [0, 1 % state matrix
-6, -5];
B = [0 % input matrix
1];
eA = eig(A) % eigenvalues of open-loop system
eA = 2×1
-2.0000 -3.0000
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
%% Manual Pole Placement
e = [-5, -7]; % desired closed-loop eigenvalues
p2 = poly(e) % desired characteristic polynomial
p2 = 1×3
1 12 35
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
k1 = p2(3) + A(2,1); % gain 1 (proportional)
k2 = p2(2) + A(2,2); % gain 2 (derivative)
K = [k1, k2] % control gain matrix
K = 1×2
29 7
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
%% verify the result with computational pole placement
K = place(A, B, e)
K = 1×2
29.0000 7.0000
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
Aa = A - B*K
Aa = 2×2
0 1.0000 -35.0000 -12.0000
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
eig(Aa) % eigenvalues of closed-loop system
ans = 2×1
-5.0000 -7.0000
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
  5 个评论

请先登录,再进行评论。

类别

Help CenterFile Exchange 中查找有关 Matrix Computations 的更多信息

产品


版本

R2024b

Community Treasure Hunt

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

Start Hunting!

Translated by