**4. Summary**

An experimental dc motor synchronization control based on microcontroller has been developed and its design implemented for the purpose of simplicity and cost effectiveness to act as power converter, master and slave controller. The main functions that each drive performs were readily programmable. The drives were forced into coordination and synchronization by some sort of software mechanism which was also implemented by programming. The speed synchronization was provided with the help of the FFS technique on the LCD. The designing of a synchronizer system to control the direction and speed of a geared dc motor has been successfully employed in this chapter. The dc motors have speed control facilities which show that speed and direction of rotation can be changed at any time to meet new situation. The hardware of the proposed system was interfaced with computer using RS232 serial communication port, for future communications. It is concluded that the dc motors were ideally suited to a multitude of industrial including textile and marine applications in which variable speed high torque are required. In addition, systems present in other applications, which include industrial equipment such as fan drives, ship propulsion and steel rolling mills, can be synchronized by a proposed design with proper modifications. This paper gives a platform for further development in the field of industrial use of dc motors.
