Page 33 - Concise Encyclopedia of Robotics
P. 33

+z
                                                        -y
                              -x
                                                      Normal  +x     Axis Inversion
                            +y

                                             -z
                                             +x



                                                        -y


                              -z                            +z


                                                  Left/right and
                                                  up/down axes
                            +y                    interchanged

                                             -x
                            Axis interchange


                              Depending on the type of robotic system used, axis interchange can alter
                            or limit the work envelope. Certain position points, or certain types of
                            motion, that are possible in one coordinate scheme might be impossible in
                            the other.
                              See also AXIS INVERSION, CARTESIAN COORDINATE GEOMETRY, and WORK ENVELOPE.
                         AXIS INVERSION
                            Axis inversion is a reversal in the orientation of one or more coordinate
                            axes in a robotic system that uses Cartesian coordinate geometry.




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