Incorrect dimensions for raising a matrix to a power. Check that the matrix is square and the power is a scalar. To perform elementwise matrix powers, use '.^'.

1 次查看（过去 30 天）
Zain Zia
Zain Zia 2020-12-1
评论： Zain Zia 2020-12-1
clear
clc
wn = 150;
w = 3.142;
wb = 0.50;
req = 2.75E09;
rl = 2e09;
d = 390E-12;
omega = 0:0.02:20;
b = 0.0111;
cp = 22.74E-09;
ke = 1.286;
meff = 0.0025;
r = wn*req*cp;
den1 = (1-(1+2*b*r)*(omega.^2))^2;
den2 = ((1+ke)*r*omega+2*b*omega-r*omega.^3)^2;
wnum = 1/(wn^2*sqrt(1+(r*omega)^2));
vnum = meff*req*d*wn*omega;
Pout = meff*b*r*ke*(omega.^2)*w^4
Hi all,
I'm trying to plot wnum, vnum and pout against omega but, I'm getting the error stated in the title. I do use the '.^' but, i'm still getting the same error, is there a workaround i could use?
Many thanks,
Zain

请先登录，再回答此问题。

采纳的回答

Jon
Jon 2020-12-1
编辑：Jon 2020-12-1
You need to use .^ for all of your powers. Also ./ for your divide, like this
clear
clc
wn = 150;
w = 3.142;
wb = 0.50;
req = 2.75E09;
rl = 2e09;
d = 390E-12;
omega = 0:0.02:20;
b = 0.0111;
cp = 22.74E-09;
ke = 1.286;
meff = 0.0025;
r = wn*req*cp;
den1 = (1-(1+2*b*r)*(omega.^2)).^2;
den2 = ((1+ke)*r*omega+2*b*omega-r*omega.^3).^2;
wnum = 1 ./(wn.^2*sqrt(1+(r*omega).^2));
vnum = meff*req*d*wn*omega;
Pout = meff*b*r*ke*(omega.^2)*w.^4

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

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

Start Hunting!

Translated by