identify_r_dynamic_v4

identify_r_dynamic_v4(times, velocities, accelerations, r_wheels, engine_speeds_out, gear_box_ratios, final_drive_ratios, idle_engine_speed, stop_velocity, plateau_acceleration, change_gear_window_width, on_engine)[source]

Identifies the dynamic radius of the wheels [m].

Parameters:
  • times (numpy.array) – Time vector [s].
  • velocities (numpy.array) – Vehicle velocity [km/h].
  • accelerations (numpy.array) – Vehicle acceleration [m/s2].
  • r_wheels (float) – Radius of the wheels [m].
  • engine_speeds_out (numpy.array) – Engine speed [RPM].
  • gear_box_ratios (dict[int, float | int]) – Gear box ratios [-].
  • final_drive_ratios (dict[int, float | int]) – Final drive ratios [-].
  • idle_engine_speed ((float, float)) – Engine speed idle median and std [RPM].
  • stop_velocity (float) – Maximum velocity to consider the vehicle stopped [km/h].
  • plateau_acceleration (float) – Maximum acceleration to be at constant velocity [m/s2].
  • change_gear_window_width (float) – Time window used to apply gear change filters [s].
  • on_engine (numpy.array) – If the engine is on [-].
Returns:

Dynamic radius of the wheels [m].
Return type:

float