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 Title: |
US4834200:
Method and apparatus for dynamic walking control of robot
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Kajita, Syuji; Tsukuba, Japan
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| Assignee: |
Agency of Industrial Science & Technology, Tokyo, Japan
Ministry of International Trade & Industry, Tokyo, Japan
other patents from JAPAN AS REPRESENTED BY DIRECTOR GENERAL OF AGENCY OF INDUSTRIAL SCIENCE AND TECHNOLOGY (687653) (approx. 1,675)
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| Published / Filed: |
1989-05-30
/ 1987-12-14
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| Application Number: |
US1987000132323
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| IPC Code: |
Advanced:
B25J 5/00;
B62D 57/02;
B62D 57/032;
Core:
B62D 57/00;
more...
IPC-7:
B25J 5/00;
B62D 57/02;
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| U.S. Class: |
Current:
180/008.1;
180/008.2;
180/008.6;
901/001;
Original:
180/008.1;
180/008.2;
180/008.6;
901/001;
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| Field of Search: |
180/8.1,8.2,8.5,8.6
901/001
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| Priority Number: |
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| Abstract: |
A method and an apparatus for dynamic walking control of a biped robot including a torso and a pair of legs with feet which, having a much smaller mass than the torso, make it possible to consider the robot as an inverted pendulum. The legs are equipped with actuators by which their length can be expanded or contracted and with actuators for producing swinging torque between each leg and its foot. The walking of the robot is controlled by detecting the angle between each leg and foot, adjusting the length of at least the leg whose foot is in contact with the ground so as to control the height of the center of gravity of the torso to pass along a straight line of predetermined inclination, and applying torque to act about the ankle of the foot in contact with the ground.
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| Attorney, Agent or Firm: |
Oblon, Spivak, McClelland, Maier & Neustadt ;
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| Primary / Asst. Examiners: |
Hill, Mitchell J.;
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| Maintenance Status: |
R3 Reinstated
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| INPADOC Legal Status: |
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| Family: |
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First Claim:
Show all 5 claims |
What is claimed is:
1. A method for controlling dynamic walking of a robot having a torso, a pair of expandable and contractible walking leg means for supporting said torso, said leg means having a weight sufficient to permit the robot as a whole to function as an inverted pendulum, wherein each of said leg means comprises a leg, an ankle formed on the lower extremity of said leg and a foot rotatably supported on said leg via said ankle, means for controlling a height dimension of a center of gravity of the torso, and actuator means for producing swinging torque between the leg and the foot of each of said leg means, said method comprising the steps of:
- detecting an angle between the foot in contact with a surface on which the robot walks and an associated leg,
- adjusting a length dimension of the leg associated with the foot in contact with said surface so as to control the height of the center of gravity of the torso to pass along a straight line parallel to said surface, and
- applying torque to act about the ankle associated with the foot in contact with said surface, thereby controlling the walking motion of the robot.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 107 U.S. patent(s) that reference this one
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