Crawler Crane Slewing Bearing

Standard crane control systems will use a techinque called trapezoidal movements. When trapezoidal moves are used, excessive sway can occur. This natural sway that occurs can impact quality, create safety problems, and lengthen cycle times. Trutegra’s No-Sway system addresses all of these with proven technology that is easy to implement, even on existing equipment.

Tuning the speed profile using S-Curve can eliminate sway for a particular speed and distance, but the only way to eliminate sway for all combinations of speed, acceleration, and length of move is by applying input-shaping, combined with a mathematical tool called convolution.