More about Motion Controls

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Motion controls are used in a wide range of automation applications. Often a complex field, motion control utilizes a variety of actuation devices, computer software, position and feedback sensors, and mechanical components. These mechanisms allow robotics to carry out specific sequences in relation to various products or objects, or for remote users to control the movement of different mechanical devices.

Components designated as motion controls tend to refer to advanced types automation systems rather than simple hydraulic or pneumatic controllers. Basic motion control devices are typically grouped under the specific machine or field in question, or under General Motion Control. True motion control systems involve a combination of many devices, such as pumps, motors (often servo motors), sensors, gears, bearings and similar items.

Depending on the nature of the application, nanopositioning controllers and ultra-sensitive actuators may be required. These devices are capable of controlling and reporting movement of extremely minute distances, as well as responding to exceedingly small signals. Often, this is accomplished through use of piezo actuators, or similar units, which can detect microvolt level input signals. Larger applications may require high-output amplifiers, multi-function digital controls or other systems.

A multitude of printed circuit board designs, chip sets, drivers, guides and servo motor types are used in motion control systems. Servo motors are smaller than typical motors and are engineered to provide better dynamic performance and steady state accuracy. Servo motors also link to a feedback control loop, and offer extremely precise motion and high torque-to-inertia ratios. Printed circuit boards and chip sets allow the motion controller to perform all necessary algorithms in the transmission, processing and interpretation of input signals, as well as directing the movement of pertinent actuators. Linear and rotary drivers ensure the smooth movement of robotic components and provide the ability for precise device positioning.