Unrelaistic braking distance in ABS Model.

Hi everyone,

I’ve built an ABS braking system model in Simulink to compare ABS vs non-ABS performance.

The model runs fine, but the stopping distance always shows 916 m, even after I changed the parameters.

Model summary:

v0 = 22 m/s

m = 1200 kg

I = 2 kg·m²

r = 0.3 m

g = 9.81 m/s²

The model computes slip as (v – ωr)/v, and integrates v to find stopping distance.

However, the scope still shows 916 m, which matches the result when m = 5 kg and I = 5 kg·m².

So I suspect some constants inside my model are still using the old values.

What I’ve checked:

Updated all workspace variables (m, I, r, etc.)

Pressed Ctrl + D to update the diagram

Looked inside the blocks, but the result didn’t change

What I need help with:

How to make Simulink use the updated workspace variables

How to confirm if any block is still using hardcoded numbers (5, 5)

Whether there’s a unit-conversion gain (×1000) on the stopping-distance output

I’ve attached my ABS.slx file for reference.

Thanks in advance!