Invention Grant
- Patent Title: Method for controlling movement of a robot
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Application No.: US17170911Application Date: 2021-02-09
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Publication No.: US11717962B2Publication Date: 2023-08-08
- Inventor: Tomas Groth , Arne Wahrburg
- Applicant: ABB Schweiz AG
- Applicant Address: CH Baden
- Assignee: ABB Schweiz AG
- Current Assignee: ABB Schweiz AG
- Current Assignee Address: CH Baden
- Agency: Leydig, Voit & Mayer, Ltd.
- Main IPC: B25J9/16
- IPC: B25J9/16 ; B25J9/06

Abstract:
A method for controlling movement of a robot having a plurality of links connected by rotatably driven joints includes the steps of: a) defining a target speed vector of a reference point of the robot in Cartesian space; b) determining rotation speeds ({dot over (q)}ref) of the joints which minimize a weighted sum, the weighted sum having for summands i) a discrepancy (∥{dot over (x)}refk−J{dot over (q)}refk∥Wx) between the target speed vector ({dot over (x)}ref) and an actual speed vector ({dot over (x)}act) calculated from actual rotation speeds of the joints; and ii) a rate of change
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of the target rotation speeds; and c) setting the rotation speeds ({dot over (q)}ref) determined in step (b) as target rotation speeds of the joints.
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of the target rotation speeds; and c) setting the rotation speeds ({dot over (q)}ref) determined in step (b) as target rotation speeds of the joints.
Public/Granted literature
- US20210162598A1 METHOD FOR CONTROLLING MOVEMENT OF A ROBOT Public/Granted day:2021-06-03
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