A CONTROL SYSTEM FOR CONTROLLING A TILTROTATOR, A METHOD FOR CALIBRATING A CONTROL SYSTEM OF A TILTROTATOR AND A METHOD FOR LEVELING A TOOL ATTACHED TO A TILTROTATOR

摘要

A control system for controlling a tiltrotator (5) comprises control means (J), a controller (6), a feeder pilot (8), a feeder (9) and a plurality of external proportional valves (16) for controlling the movements of the tiltrotator. The control system further comprises an inclinometer (15) providing to the controller the orientation of a tool (4) attached to the tiltrotator.