Legged Robot and Legged Robot Walking Control Method
First Claim
1. A legged robot, comprising:
- a torso;
a leg link, which is swingably connected to the torso;
storing means for storing leg tip gait data describing a time-series change in a target leg tip motion;
storing means for storing torso gait data describing a time-series change in a target torso motion, which enables walking following the change in the target leg tip motion;
torso motion detection means for detecting an actual torso motion;
deviation calculation means for calculating a deviation of the actual torso motion from the target torso motion; and
correction means for determining a correction quantity from the calculated deviation based on a prescribed transfer function, and for correcting the torso gait data stored in the storing means for storing torso gait data based on the correction quantity.
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Abstract
A legged robot and a legged robot walking control method are disclosed, which enable stable walking without force sensors on leg tips. A legged robot of the present invention comprises a torso, a leg link, which is swingably connected to the torso, storing means 210 for storing leg tip gait data describing a time-series change in a target leg tip motion, storing means 210 for storing torso gait data describing a time-series change in a target torso motion, which realizes a target ZMP following the change in the target leg tip motion, torso motion detection means 218, 220 for detecting an actual torso motion, deviation calculation means 312 for calculating a deviation of the actual torso motion from the target torso motion, correction quantity calculation means 308 for determining a correction quantity from the calculated deviation based on a prescribed transfer function, and correction means 306 for correcting the target torso gait data based on the determined correction quantity.
56 Citations
11 Claims
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1. A legged robot, comprising:
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a torso;
a leg link, which is swingably connected to the torso;
storing means for storing leg tip gait data describing a time-series change in a target leg tip motion;
storing means for storing torso gait data describing a time-series change in a target torso motion, which enables walking following the change in the target leg tip motion;
torso motion detection means for detecting an actual torso motion;
deviation calculation means for calculating a deviation of the actual torso motion from the target torso motion; and
correction means for determining a correction quantity from the calculated deviation based on a prescribed transfer function, and for correcting the torso gait data stored in the storing means for storing torso gait data based on the correction quantity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A walking control method of a legged robot, comprising the steps of:
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storing leg tip gait data describing a time-series change in a target leg tip motion;
storing torso gait data describing a time-series change in a target torso motion, which enables walking following the change in the target leg tip motion;
detecting an actual torso motion;
calculating a deviation of the actual torso motion from the target torso motion;
determining a correction quantity from the calculated deviation based on a prescribed transfer function, and correcting the stored torso gait data based on the correction quantity; and
instructing the corrected torso gait data to a joint angles computation device of the robot. - View Dependent Claims (10, 11)
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Specification