What type of motor is generally associated with precise control of rotation?

Stepper motors are specifically designed for precise control of rotation, making them ideal for applications that require accurate positioning and repeatability. They operate by dividing a full rotation into a series of discrete steps, allowing for fine control over the angular position. This characteristic is particularly useful in robotics, CNC machines, and other automated systems that need precise movements.

Each step of a stepper motor corresponds to a specific angular movement, which allows for predictable and controllable positioning without the need for feedback systems in many applications. This step-wise operation is well-suited for open-loop control, where the system does not require feedback to determine its position.

While other motor types such as servo motors also provide good positional control, they typically rely on feedback systems (encoder or potentiometer) to achieve precision. In contrast, stepper motors inherently offer a much simpler mechanism for achieving the required angular displacement without the complexities of feedback loops, making them a popular choice for applications where precision is paramount.