How to create juliens theory tire model in simulink

Juliens theory tire model graphs

Answer 1

[Varun]

Hi Mahendran,

It seems like you want to implement tire model in simulink using Julien's therory.

You can use MATLAB Function block to implement the tire model equations using Julien's theory. Create a function "JulienTireModel" which takes the inputs like slip ratio, slip angle and connect the outputs like longitudinal force, lateral force to the rest of your simulation model.

Please refer to the following code snippet inside a MATLAB function block:

function [Fx, Fy] = JulienTireModel(alpha, gamma)
    % Parameters
    B = 10;  % Example parameter, adjust according to your specific model
    C = 1.2; % Example parameter, adjust according to your specific model
    
    % Tire model equations
    Fx = B * alpha;
    Fy = C * gamma;
end

You can also refer to the following resources that might be helpful for you task:

“matlabFunctionBlock”: https://www.mathworks.com/help/symbolic/sym.matlabfunctionblock.html?s_tid=doc_ta

“Wheels and Tires”: https://www.mathworks.com/help/vdynblks/brakes-and-wheels.html

“Parameters Estimation of a Tire Model Based on Julien’s Theory”: https://www.sae.org/publications/technical-papers/content/2017-36-0177/