Robot apparatus and gripping method for use in robot apparatus
First Claim
1. A robot apparatus comprising:
- a robot arm;
a multi-fingered hand disposed at an end of the robot arm and including at least one fingertip force sensor for use in force control;
an information acquiring unit that acquires at least location information on a target by an input from a user or by detection made by a detection unit; and
a controller that moves the robot arm to cause the multi-fingered hand to approach the target on the basis of the at least location information on the target acquired by the information acquiring unit, detects a contact location at which actual contact is made between the at least one fingertip force sensor and the target on the basis of an output of the at least one fingertip force sensor of the multi-fingered hand, and modifies the location information on the target on the basis of information indicating the contact location,wherein when a difference between a location indicated by the location information on the target acquired by the information acquiring unit and the contact location is larger than a specific threshold, the controller modifies the location information on the target on the basis of the information indicating the contact location.
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Accused Products
Abstract
A robot apparatus includes a robot arm, a multi-fingered hand disposed at an end of the robot arm and including a force sensor for use in force control, an image processor that acquires at least location information on a gripping target by detection made by a visual sensor, and a control device that moves the robot arm on the basis of the at least location information on the gripping target acquired by the image processor to cause the multi-fingered hand to approach the gripping target, detects a contact location of actual contact with the gripping target on the basis of an output of the force sensor of the multi-fingered hand, and modifies the location information on the gripping target on the basis of information indicating the detected contact location.
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Citations
11 Claims
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1. A robot apparatus comprising:
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a robot arm; a multi-fingered hand disposed at an end of the robot arm and including at least one fingertip force sensor for use in force control; an information acquiring unit that acquires at least location information on a target by an input from a user or by detection made by a detection unit; and a controller that moves the robot arm to cause the multi-fingered hand to approach the target on the basis of the at least location information on the target acquired by the information acquiring unit, detects a contact location at which actual contact is made between the at least one fingertip force sensor and the target on the basis of an output of the at least one fingertip force sensor of the multi-fingered hand, and modifies the location information on the target on the basis of information indicating the contact location, wherein when a difference between a location indicated by the location information on the target acquired by the information acquiring unit and the contact location is larger than a specific threshold, the controller modifies the location information on the target on the basis of the information indicating the contact location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A gripping method for use in a robot apparatus including a robot arm having an end on which a multi-fingered hand including a fingertip force sensor is disposed, the gripping method comprising the steps of:
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acquiring at least location information on a target; moving the robot arm on the basis of the at least acquired location information on the target to cause the multi-fingered hand at the end of the robot arm to approach the target and detecting a contact location at which actual contact is made between the at least one fingertip force sensor and the target on the basis of an output of the fingertip force sensor of the multi-fingered hand; and modifying, using a controller, the location information on the target on the basis of information indicating the contact location, wherein when a difference between a location indicated by the location information on the target acquired by the information acquiring unit and the contact location is larger than a specific threshold, the controller modifies the location information on the target on the basis of the information indicating the contact location. - View Dependent Claims (10)
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11. A robot apparatus comprising:
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a robot arm; a multi-fingered hand disposed at an end of the robot arm and including at least one fingertip force sensor for use in force control; an information acquiring unit that acquires at least location information on a target by an input from a user or by detection made by a detection unit; a controller that moves the robot arm to cause the multi-fingered hand to approach the target on the basis of the at least location information on the target acquired by the information acquiring unit, detects a contact location at which actual contact is made between the at least one fingertip force sensor and the target on the basis of an output of the at least one fingertip force sensor of the multi-fingered hand, and modifies the location information on the target on the basis of information indicating the contact location; and a vehicle for moving the robot arm having an end on which the multi-fingered hand is disposed from a first position to a second position adjacent to the target, wherein when a distance of movement of the vehicle from the first position to the second position is larger than a threshold amount, the controller modifies the location information on the target on the basis of the information indicating the contact location.
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Specification