System for detecting and controlling the position of a mobile ro

Details System for detecting and controlling the position of a mobile ro System for detecting and controlling the position of a mobile ro

1994-12-23

1998-04-07

Elmore, Reba I.

Boots, shoes, and leggings

180 86, 31856812, 31856816, 395 93, B25J 1100, G05B 1900

Patent

active

057372179

ABSTRACT:
A system for controlling locomotion of a legged mobile robot walking in a working space. The system is provided with optical detects which are disposed in a line array at the both sides of a foot member of the robot. On the other hand, a landmark is provided in the working space. The landmark comprises of a line or an arc which divides the space into two regions with different attributes, i.e. different in brightness. The optical detectors generate different signals depending on the brightness. With the generated signals, a relative position of the robot to the landmark is detected. Moreover, when the landmark is an arc, its center is located in line with a work for the robot. a relative direction of the robot to the landmark or the work is detected. Based on the detection, locomotion of the robot is controlled in such a manner that the robot can stably ascend/descent stairs or spiral staircases.

REFERENCES:
patent: 4703240 (1987-10-01), Yoshimoto
patent: 4811229 (1989-03-01), Wilson
patent: 5378969 (1995-01-01), Haikawa
patent: 5402050 (1995-03-01), Ozawa
patent: 5416393 (1995-05-01), Gomi et al.
patent: 5421426 (1995-06-01), De Beaucourt et al.
Abstract of AU-A-5 562 280 (D.J. Erskine) Aug. 1981.
Abstract of JP4101791, vol. 16, No. 339 (Mitsubishi) Apr. 1992.

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