DC motors provide excellent speed control for acceleration and deceleration with effective and simple torque control. The fact that the power supply of a DC motor connects directly to the field of the motor allows for precise voltage control, which is necessary with speed and torque control applications.
DC motors perform better than AC motors on most traction equipment. They are also used for mobile equipment like golf carts, quarry and mining equipment. DC motors are conveniently portable and well suited to special applications, such as industrial tools and machinery that is not easily run from remote power sources
Types of Motors
There are several kinds of DC motors commonly used in industrial applications. The motors have similar external appearances but are different in their internal construction and output performance. When selecting a DC motor for a given application, two factors must be taken into consideration:
1.The allowed variation in speed for a given change in load.
2 The allowed variation in torque for a given change in load.
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