Trajectory Tracking News Today

The road topography can significantly affect the tyre vertical load and the vehicle dynamics response in off-road scenarios, which will greatly impact the autonomous vehicle's stability, trajectory planning and trajectory tracking performance. However, the road topography information is less focused in current literature. This study focuses on the local trajectory planning and tracking method by assuming waypoints along the global route are already available. First an innovative spatiotempo...

Abstract For 4MIDEV with differential steering, the trajectory tracking multi-objective control method is studied. The dynamics model of the four-in-wheel motor independent-drive vehicle (4MIDEV) is established comprehensively considering the differential steering dynamics characteristics, longitudinal dynamics characteristics, and lateral dynamics characteristics. Takagi Sugeno (T-S) fuzzy method is adopted to deal with the nonlinear and time-varying characteristics of the model parameters suc...

Abstract In this paper, we investigate the problem of trajectory tracking control for marine surface vehicles (MSVs), which is subject to dynamic uncertainties, external disturbances and unmeasurable velocities. To recover the unmeasurable velocities, a novel adaptive neural network (NN) state observer is constructed. To guarantee the transient and steady-state tracking performance, a novel nonlinear transformation method is proposed by employing a tracking error transformation together with a ...

It takes months sometimes years before we get to the bottom of things and sometimes like you mentioned at the outset there might be a lot that we just never find out. >> lets get to another question. tom tweets im confused with all the electronics available as to why they dont have a location pinpointed now within a few square miles. >> well thats a great question. and there is equipment on board the airplane that should have given trajectory tracking even primary radar. >> you think of all the ...