How to Change Fixed or Variable Solver Step Size in Simulink?

To configure solver step size settings in Simulink:

1. Press Ctrl + E to open Model Configuration Parameters.
2. Select Solver from the left menu panel.
3. For Variable-step solvers (e.g., ode45, ode15s): Set Max step size from auto to 1e-3 or 1e-4 for higher accuracy.
4. For Fixed-step solvers (e.g., ode3, ode4): Set Fixed-step size to your required sampling period (e.g., 0.001 seconds).