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Value of vas_steering demand using different integrator/formulation

jozef.bucha
Hello everybody
 
Can anybody tell me difference of vas_steering_demand value in postprocessor with different solver settings (Gstiff/I3, Gstiff/SI2, HHT/I3)
All simulations are done as DLC with speed 50 km/h with (MDI_Demo_Vehicle)
 
Results are pretty same (i.e. lateral disp, steering wheel has same angle)
lateral_disp
steering_wheel
Steering demand during DLC using gstiff_i3
steering_demand_i3
Steering demand during DLC using hht_i3 or gstiff_si2
steering_demand_hht
I do not understand value of steering demand, why is so much different while using hht or si2?
 
Thanks
 
Jozef
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