Page 24 - The Mechatronics Handbook
P. 24

FIGURE 1.4  Using a radar to measure distance and velocity to autonomously maintain desired distance between
                                 vehicles. (Adapted from Modern Control Systems, 9th ed., R. C. Dorf and R. H. Bishop, Prentice-Hall, 2001. Used
                                 with permission.)


























                                 FIGURE 1.5  Autonomous vehicle system design with sensors and actuators.

                                 system for such a vehicle, shown in Fig. 1.5, involves differential global positioning systems (DGPS), real-
                                 time image processing, and dynamic path planning [26].
                                   Future mechatronic systems on automobiles may include a fog-free windshield based on humidity
                                 and temperature sensing and climate control, self-parallel parking, rear parking aid, lane change assistance,
                                 fluidless electronic brake-by-wire, and replacement of hydraulic systems with electromechanical servo
                                 systems. As the number of automobiles in the world increases, stricter emission standards are inevitable.
                                 Mechatronic products will in all likelihood contribute to meet the challenges in emission control and
                                 engine efficiency by providing substantial reduction in CO, NO, and HC emissions and increase in vehicle

                                 ©2002 CRC Press LLC
   19   20   21   22   23   24   25   26   27   28   29