Hello everyone,

Thank you so much for developing chrono. I have always used dynamics 
simulation.
This time, I have been struggling for a long time with the discrepancy from 
the real phenomena and I would like to ask you a question.


I am currently incorporating a robot of my own and implementing the 
simulation. The structure is based on the robot's curiosity. 

I adopted SCM and NSC for the terrain and moved the robot. And when I 
measured the distance traveled, it was advancing more than the theoretical 
value. Here, the theoretical value is the average speed derived from w 
rad/s , the average value of angular velocity of tire rotation for each 
time step, and the radius of tire r. Then, the theoretical value was 
derived by multiplying by the travel time and compared. Then, for some 
reason, the distance traveled in the simulation was greater than the 
distance that should have been traveled theoretically.

This is an impossible situation, and even with the SCM in place and ruts 
and other slippage observable, the simulated value is greater than the 
theoretical value.

So far, these values have remained the same even though we have changed the 
time step (0.001 seconds), the value of inertia, the value of soil 
parameter, and so on,.
I would like to know if you have any idea as to the reason for this.
Please, please help me.

Thank you, and kind regards,

Kakkonto

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