hexagon logo

Comparison of DLC as open and closed loop event

Hello,
 
Can you give me some advice about my results of comparison. I wanted to compare double lane change with some maneuver as open loop. I did it this way:
 
  1. I have created Double lane change simulation.
  2. In PPT i saved data from all demands (vas_steering_demand_data,_vas_throttle_demand_data,...)
  3. Made open loop dcd file
  4. From event generated during standard DLC, i changed every input to open, and attached my dcd file
  5. Made file driven simulation
 
Some results are perfectly same:
steering_demand
throttle_demand
The biggest difference are in results in accelerations i.e.:
 
yaw_accelerations
and in this
lateral_displ
Is this caused with different longitudinal velocities of vehicle (open loop model is going faster, mdi driver in closed loop is correcting velocity ???)
longitudinal_velocity
or i am wrong with my assumption.
 
How to make this comparison better and more precise?
 
Thanks a lot
 
Jozef