Invention Grant
- Patent Title: Systems and methods for using the null space to emphasize manipulator joint motion anisotropically
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Application No.: US15295673Application Date: 2016-10-17
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Publication No.: US09931172B2Publication Date: 2018-04-03
- Inventor: Arjang M. Hourtash , Nitish Swarup
- Applicant: Intuitive Surgical Operations, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Intuitive Surgical Operations, Inc.
- Current Assignee: Intuitive Surgical Operations, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: B25J15/02
- IPC: B25J15/02 ; G05B19/04 ; A61B34/37 ; A61B34/00 ; A61B1/00 ; A61B18/14 ; B25J9/16 ; B25J18/00 ; A61B18/00

Abstract:
Devices, systems, and methods for providing commanded movement of an end effector of a manipulator while providing a desired movement of one or more joints of the manipulator. Methods include calculating weighted joint velocities using a weighting matrix within the joint space to anisotropically emphasize joint movement within a null-space to provide the desired movement of a first set of joints. Methods may include calculating joint velocities that achieve the desired end effector movement using a pseudo-inverse solution and adjusting the calculated joint velocities using a potential function gradient within the joint space corresponding to the desired movement of the first set of joints. Methods may include use of a weighted pseudo-inverse solution and also an augmented Jacobian solution. One or more auxiliary movements may also be provided using joint velocities calculated from the pseudo-inverse solution. Various configurations for systems utilizing such methods are provided herein.
Public/Granted literature
- US20170095303A1 SYSTEMS AND METHODS FOR USING THE NULL SPACE TO EMPHASIZE MANIPULATOR JOINT MOTION ANISOTROPICALLY Public/Granted day:2017-04-06
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