Abstract
This thesis devised an intelligent robot that can be used in library. It can help the user delivering books or let the user sit on the robot as will. The intelligent robot consists of a wheel robot, a scanning laser rangefinder (SLR) and a radio frequency identification (RFID). The system has five functions, e.g. tracking, obstacle avoidance, positioning, restrained and mode selection. The RFID determines the action mode of the robot. There are five action modes which are idleness, tracking the user, tracking the manager, return to the area around the initial point from restricted and return to the initial point from the area around the initial point. The SLR can obtain the environmental distance data that are used in tracking, obstacle avoidance and finding the target. There are three parts of the experiment. The first part constructs the dynamic model of motor for the wheel robot. The SH2 microprocessor of wheel robot is replaced with an external circuit to provide the reference signal for finding the dynamic model of motor. The second part uses RFID to determine the valid robot action modes. The third part utilizes SLR for tracking, obstacle avoidance and finding the target. Finally, the thesis uses the robot to simulate the surroundings in the library by several experiments.