It is stated that it is essential to fully understand the nature of the load and the user needs that must be satisfied by the drive. The load component may or may not have sensors to measure speed, torque, or shaft angle. The sensors that can be used largely depend on the application. The nature of the load may be translational or rotational, and the drive designer must make a judicious choice whether to use a direct drive with a large motor or a gear drive with a smaller but faster one. Furthermore, the nature of the load in terms of whether it requires continuous or recurring operation must be specified