SMS scnews item created by Holger Dullin at Fri 4 Sep 2009 1106
Type: Seminar
Distribution: World
Expiry: 9 Sep 2009
Calendar1: 9 Sep 2009 1400-1500
CalLoc1: Eastern Avenue Lecture Theatre
Auth: dullin@p714.pc (assumed)

Applied Maths Seminar

Going in Circles: Steering in Terrain from Robots to Animals and Back-again


Surya Singh, Australian centre for Field Robotics

Going in Circles: Steering in Terrain from Robots to Animals and Back-again

Wednesday 9th Sep 14:05-14:55pm, Eastern Avenue Lecture Theatre.

Steering is so common that it seems deceivingly simple - one just accelerates, decelerates, or turns. However, combining these actions in a principled manner for optimal control is non-trivial as locomotion at speed is coupled and differentially constrained.

More generally, this can be viewed as an inverse control problem for non-holonomic systems. However, analytic solutions are extremely difficult to characterize. Thus, a "motion planning" approach is introduced that solves this by transforming the continuous problem into a combinatorial one. This gives a more widely applicable, yet discrete, technique that can additionally handle obstacle constraints.

This method is illustrated using examples from robotics (agile driving in unstructured environments) and biomechanics (running/galloping gait analysis). Recent extensions in "performance sensitive motion planning" that consider estimates of likely motions and controls will also be discussed in relation to future applications in sports training and robot teleoperations.

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