Presentation is loading. Please wait.

Presentation is loading. Please wait.

From Dubins´ car to Reeds and Shepp´s mobile robot

Similar presentations


Presentation on theme: "From Dubins´ car to Reeds and Shepp´s mobile robot"— Presentation transcript:

1 From Dubins´ car to Reeds and Shepp´s mobile robot
Valerii S. Patsko Institute of Mathematics and Mechanics Ural Branch of the Russian Academy of Sciences, Ekaterinburg Varvara L. Turova Center of Advanced European Studies and Research, Bonn 7th World Congress on Computational Mechanics, Los Angeles, July 16-22, 2006

2 Collection of survey papers

3 Dubins´ car

4 a is a fixed parameter of the problem,
Reeds and Shepp´s car P a is a fixed parameter of the problem,

5 Classical homicidal chauffeur game
,

6 Reinforced homicidal chauffeur
P , :

7 Report by R. Isaacs, 1951

8 Book by R.Isaacs, 1965

9 Isaacs´ transformation
x h P y

10 Time-limited reachable sets
, , Wave front M M

11 Level sets of the optimal time function

12 Construction of time-limited reachable sets
Step-by-step procedure Usable part

13 Computation scheme F3 F2 F1 G0 M

14 Construction of a wave front
Local-convexity Local-concavity 1. 2.

15 Reachable sets for reinforced car
Isaacs´ | transform. ,

16 Dubins´ car

17 683

18

19

20

21

22 Reeds and Shepp´s car

23

24 Reachable sets at a given time for a > 0

25

26 M

27 M

28 M

29 Time-limited reachable sets,

30 Level sets of the value function
for the reinforced homicidal chauffeur Isaacs´ transform. , More complicated structure of barrier lines and wave fronts

31 M

32 M

33 Computation scheme for two usable parts

34 Roots of the Hamiltonian. Semipermeable directions
, _ + _ +

35 Families of semipermeable curves for reinforced car
1 a 1 -1 a -1 a

36 Barrier lines for Dubins´ car
y -1 1 x -1 1 -1 1 -1 1

37 Hamilton-Jacobi equation for optimal time function
in case of reinforced car Hamilton-Jacobi equation for value function of the reinforced homicidal chauffeur game


Download ppt "From Dubins´ car to Reeds and Shepp´s mobile robot"

Similar presentations


Ads by Google