"On-center" open loop steering event ?

Question

For the analysis i am giving input velocity as 60,80,100 kmph for 0.2g (lateral Acceleration), but steering input and time to achieve Lateral acceleration of 0.2g is always after 10sec.

And also in graph i am getting a peak at Steering torque demand.

Does anyone know the proper working of on-center analysis in adams what are criteria it takes while running the analysis.

The attached image contains Lateral Acceleration, Steering Demand, Steering Torque VS Time

Attached Files (3)

Yogesh Dhakare · Accepted Answer

Hello Dhiram,

The spike you have noticed is harmless so you can ignore it, nevertheless it needs to be fixed. It is happening because the output of the steering wheel angle from first mini maneuver and input to second mini maneuver is different. The input to second mini maneuver is derived from the first mini meneuver.

The area of interest of this event is after 10 sec when steering wheel angle required for achieving target acceleration (in this case 0.2g) is applied. ​

Please find attached NFE for Adams 2017.2 release, the plot configuration file has been provided for the area of interest of this event.

Thanks,

Yogesh Dhakare

MSC Software

Attached Files (1)

A17-2_003_ACar_Event_On_Center.zip