This excerpt from the book "Electric Motors and Drives: Fundamentals, Types and Applications" examines servo motors and both analog and digital position control.

[Chris] writes in to let us know about his latest animatronics tutorial, this time on robotic eyebrows! The tutorial takes us through the process of using a fairly simple PIC circuit to display ...

Modifying a servo no longer requires opening the DC motor within. The PID control system in a typical hobby servo is very good at two things: moving to a new position quickly, and holding that ...

Making sense of servo couplings How does coupling selection affect productivity in today's automation environment? Bill Rexnord: Selecting couplings for ...

Servo-motor torque, however, remains roughly constant across the operating range (blue and red). Stepper motors also have performance limitations.