| 摘要 |
A device for restoring positional information of a robot provided with a first member and a second member connected movable relative to each other via an articulation axis; a motor moving the second member relative to the first member; and a sensor outputting a sensor signal according to a driving amount of the motor. The device includes an imaging section obtaining an image signal in a region including a first mark and a second mark representing a positional relationship between the first member and the second member; a mark position computation section computing a first positional relationship between the first mark and the second mark at a first time and a second positional relationship between the first mark and the second mark at a second time, based on an image signal obtained by the imaging section at the first time and at the second time; and a correction section correcting positional information depending on a sensor signal output by the sensor after the second time, based on the first positional relationship and the second positional relationship, a first sensor signal output by the sensor at the first time and a second sensor signal output by the sensor at the second time. |
