Ship&Offshore | Issue 06/2012
Secondary-controlled drives compensate for sea swells
MOTION CONTROL Wind and waves cause vessels to move around, making it more difficult to place loads on the ocean floor. Active heave compensation from Bosch Rexroth detects the crane and vessel motion, integrates it into the control process and compensates for up to 95% of the motion through secondary-controlled drives, writes Michael Teuteberg from Bosch Rexroth AG.