- SPECIAL REPORTS
The distinction between AC induction motors and permanent-magnet DC servomotors was once fairly clear. AC motors were for high-horsepower applications, such as compressors, pumps, blowers and bulk-handling conveyors. DC servomotors were for applications requiring low horsepower, high torque, high cycling and precise positioning, such as machine tools and pick-and-place machines.
Speed is essential for high-volume assembly. However, speed also creates problems.
In a competitive marketplace, details help differentiate one product from another. A thoughtful feature or a more rugged design can make all the difference. Consumers who buy based solely on price often end up disappointed.
Semiconductor processing equipment is a notoriously demanding application for motion control engineers. Extreme precision, reliability and smoothness are absolute requirements. At the same time, space is at a premium.
When specifying a motion control system for, say, a pick-and-place application on an automated assembly line, engineers have two choices.
Software is playing an increasing role in industrial automation. That’s been good in terms of boosting the functionality and flexibility of machines. But, writing code can also add cost and time to the development process.
CHARLOTTE, NC—Precise motion controllers are certainly important in advanced manufacturing equipment. But just as the performance of a super athlete depends on a combination of brains and physical ability, so do high-precision linear motion systems. Without mechanical systems capable of taking full advantage of the instructions supplied by the motion controller, many processes would be impossible.