Abstract
This chapter explains motor control. Programmable motor controllers are designed by interfacing power-switching devices to microcomputers and implementing a suitable control algorithm. The number of devices, configuration, and rating depend on several factors, such as the type of motor, the source of power, and the power levels. Microcomputer-based motor controllers can provide precise and stepless speed and position control. Microcomputer-based motor controllers are referred to as “intelligent controllers” and find uses in a variety of applications, such as wire-winding processes, printing machines, and electric vehicles. Some controllers are designed to achieve precise position control. In an intelligent motor controller, the microcomputer is not only employed to control the rotational speed and direction, but it also monitors various parameters and communicates with the operator. The advances in optoelectronics technology have reduced the cost of displays and made them easier to interface and use. The result is the inclusion of more informative displays in lower-cost motor drives increasing their user-friendliness and easing the monitoring and fault-finding tasks.
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