How can I find displacement from acceleration on simulink?

I have earthquake ground acceleration data and want to get displacement by double integrating it on Simulink. I used either integration block or discrete integration blocks but finally I get cumulative displacement. It is not correct. How can I solve this issue.

Answer 1

[Shreshth]

To accurately derive displacement from earthquake acceleration data in Simulink:

1. Preprocess: Remove offsets and drift using demeaning and high-pass filtering.

2. Simulink Setup:

• Integrate acceleration to velocity using an Integrator block.
• Integrate velocity to displacement with another Integrator block.

3. Postprocess: Filter out any remaining drift and adjust for initial conditions.

This approach minimizes errors and improves the accuracy of displacement calculations.

Thanks