Abstract: A large-size manipulator comprises a boom made up of several segments and arranged on a vehicle frame. The boom is foldable and has a slewing track ring rotated about a vertical axis of rotation. The boom segments can be swiveled with respect to each other and with respect to the slewing track ring. A distant steering system includes a steering organ to operate the driving units and to set a desired position of the driving units and/or the boom segments and the slewing track ring. A control system includes a monitoring unit to ascertain a parameter that describes a disturbance condition of at least one boom segment. A determination unit determines the load that acts on a driving unit in opposition to the position set by the steering organ. The control system assures that the driving unit is controlled to minimize the deviation from the set position of the boom segments. Vibration of the boom segments will therefore be damped.

Abstract: The present invention relates to a large-size manipulator, and also to truck-mounted concrete pumps with such a large-size manipulator, that comprises a boom (1) made up of several (2 to 5) and especially 3 to 5 segments and arranged on a frame, especially a vehicle frame, said boom being especially designed as a foldable distribution boom that preferably comprises a slewing track ring (6), so that by means of a driving unit it can be rotated about a substantially vertical axis of rotation, where the boom segments, by means of further driving units, can be swivelled with respect to each other and with respect to the slewing track ring about substantially horizontal and mutually parallel axes, where a distant steering system comprising a steering organ is provided to operate the driving units and to set a desired position of the driving units and/or the boom segments and the slewing track ring, where there is also provided a control system that comprises at least one monitoring unit (15) to ascertain a paramet