System for automatically moving an articulated arm towards a target position, comprising: - said articulated arm comprising a plurality of consecutively connected bodies forming an open kinematic chain with an end-effector, having a plurality of translative and/or rotative degrees of freedom and a plurality of actuators for moving said bodies; - a plurality of sensors associated to said bodies, adapted to supply signals representative of linear or angular positions such to enable to determine the absolute coordinates of the end-effector; - a user interface device configured for commanding the articulated arm by an operator; - an emitting probe positioned in the target position, and at least one first, one second, one third and one fourth detecting probes, each positioned in a predetermined different point of the articulated arm, and adapted to communicate with the emitting probe so that each emitting probe-detecting probe pair provides a signal indicative of the relative distance thereof; - a control unit operatively connected to said actuators, sensors, emitting probe, detecting probes, and user interface device, said control unit being configured for, at each sampling instant of a plurality of subsequent sampling instants: - estimating, based on the signals from said first, second, third, fourth emitting probes (1, 2, 3, 4) and from said detecting probe the actual absolute position of the emitting probe; - determining the actual absolute position of the end-effector based on the signals from said sensors; - actuating the actuators so that the end-effector moves towards the estimated actual absolute position of the emitting probe. - said articulated arm comprising a plurality of consecutively connected bodies forming an open kinematic chain with an end-effector, having a plurality of translative and/or rotative degrees of freedom and a plurality of actuators for moving said bodies; - a plurality of sensors associated to said bodies, adapted to supply signals representative of linear or angular positions such to enable to determine the absolute coordinates of the end-effector; - a user interface device configured for commanding the articulated arm by an operator; - an emitting probe positioned in the target position, and at least one first, one second, one third and one fourth detecting probes, each positioned in a predetermined different point of the articulated arm, and adapted to communicate with the emitting probe so that each emitting probe-detecting probe pair provides a signal indicative of the relative distance thereof; - a control unit operatively connected to said actuators, sensors, emitting probe, detecting probes, and user interface device, said control unit being configured for, at each sampling instant of a plurality of subsequent sampling instants: - estimating, based on the signals from said first, second, third, fourth emitting probes (1, 2, 3, 4) and from said detecting probe the actual absolute position of the emitting probe; - determining the actual absolute position of the end-effector based on the signals from said sensors; - actuating the actuators so that the end-effector moves towards the estimated actual absolute position of the emitting probe.