Page 94 - Introduction to Autonomous Mobile Robots
P. 94

Mobile Robot Kinematics

                            Y I                                                                 79




















                                                               X I



                             β , β s2
                              s1

                            60°                              β s1


                           -60°                              β s2
                             x, y, θ



                                                              y(t)
                                                              x(t)
                                                              θ(t)


                                    1     2    3     4    5   t / [s]
                           Figure 3.16
                           Example of robot trajectory similar to figure 3.15 with two steered wheels: move for 1 second with
                           constant speed of 1 m/s along axis X  ; rotate steered wheels -50 / 50 degree respectively; change ori-
                                                     I
                           entation counterclockwise 90 degree in 1 second; rotate steered wheels 50 / -50 degree respectively;
                           move for 1 second with constant speed of 1 m/s along axis Y I  .
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