Articulated-arm robot and method for monitoring an articulated-arm robot

An articulated-arm robot (20), comprising:

• a plurality of robot links attached to one another by respective articulations and each driven by an electric motor;
• two independent monitoring devices for redundant monitoring of a robot operation, including a first monitoring device and a second monitoring device;
• each of said first and second monitoring devices having:
• a movement sensor, being a first movement sensor and a second movement sensor respectively, for detecting a momentary position of a respective said robot link;
• a force detector configured for detecting a force momentarily acting on the respective said robot link, being a first force detector and a second force detector, respectively, and said first and second force detector operating on mutually different measuring principles;
• and
• an evaluation unit, being a first evaluation unit for processing data of said first movement sensor and data of said first force detector and a second evaluation unit for processing data of said second movement sensor and data of said second force detector.