Servo Drives & Motors
A motion controller, containing the target positions and motion profiles, generates position commands to the amplifiers/ drives while monitoring the actual path through feedback sensors and correcting for position or velocity errors. Motion Controller variations, packaged as PLCs, MACs, PC-based and stand-alone, differ in key specifications on the type of motion supported, the number of axis supported, the speed or scan rate, and the feedback resolution. The controller communicates to the drive through analog, discrete or communication signals which is passed on to the motor. Servo motors or "servos", as they are known, are electronic devices and rotary or linear actuators that rotate and push parts of a machine with precision. Servos are mainly used on angular or linear position and for specific velocity, and acceleration. A servo is any motor-driven system with a feedback element built in. Servos are found everywhere from heavy machinery, to power steering in vehicles, to robotics and a wide variety of electronics.
