Working and analysis of the H - bridge motor driver circuit designed for wheeled mobile robots

Wheeled mobile robots (WMR's) are built with their wheel's drive machine, motors. Depend upon their desire design of WMR, technicians made use of DC motor for motion. As a driving system of DC motor, a Peripheral Interface Controller PIC 16F877A based control system is designed with H- bridge motor driver circuit. The driving system is used to drive two DC gear motors which are used to control motion of WMR. The outputs of PIC are used to drive the H - bridge motor driver circuit which makes the movement of the motor. In this article three circuits of H - bridge have been explained. The first circuit explains the motion of the motor and the concept of differential drive which technicians have been using. The second circuit lays emphasis on the proper triggering of transistors thereby improving the earlier circuit. The third concept is the H - bridge motor driver circuit at heavy load conditions. The whole paper is made on the basic research in order to make an efficient driving system under any conditions.