Syntax Error using Fcn Block

13 views (last 30 days)
Jay Talreja
Jay Talreja on 7 Sep 2020
Commented: Do on 9 Jun 2023
I am trying to use Fcn Block but everytime i get this error
The Expression is (1/Mus)*(Ks*(u[3]-u[4])+Ct*(u([7]-u[2])+Kt*(u[6]-u[4])-u[5]) by taking 7 inputs through Mux and taking as input to Fcn Block
This is the error I am getting
The expression: (1/Mus)*(Ks*(u[3]-u[4])+Ct*(u([7]-u[2])+Kt*(u[6]-u[4])-u[5]) in 'Skyhook_Quater_Car_Me/Quater Car /Fcn1' has a syntax error
Can somebody help me on this..
Thanks in Advance

Accepted Answer

Jan
Jan on 7 Sep 2020
Edited: Jan on 7 Sep 2020
You need round parentheses for indexing, not square brackets:
(1/Mus)*(Ks*(u[3]-u[4])+Ct*(u([7]-u[2])+Kt*(u[6]-u[4])-u[5])
% ==>
(1/Mus)*(Ks*(u(3)-u(4))+Ct*(u((7)-u(2))+Kt*(u(6)-u(4))-u(5))
When I insert your expression in Matlab's Command Window, I get the error message:
Error: Unbalanced or unexpected parenthesis or bracket.
and a mark under the first square bracket.
  2 Comments
Jay Talreja
Jay Talreja on 7 Sep 2020
Edited: Jay Talreja on 7 Sep 2020
Error while parsing expression:
(1/Mus)*(Ks*(u(3)-u(4))+Ct*(u((7)-u(2))+Kt*(u(6)-u(4))-u(5))
in 'Skyhook_Quater_Car_Me/Quater Car /Fcn1' token "" was found, whereas ")" was expected
This is the error I am getting now even after checking all the spaceing and brackets.
Jan
Jan on 7 Sep 2020
You still have a different number of opening and closing parentheses. I cannot fix this for you, because I do not know the real fromula you want to use.

Sign in to comment.

More Answers (1)

Tufail Ahmad Bhat
Tufail Ahmad Bhat on 26 Jan 2022
Did you solve the problem? I am getting the same error.

Tags

Community Treasure Hunt

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

Start Hunting!