Real-time robot control system tracking based on a standard path
First Claim
1. A control system for an industrial robot that tracks a work-shape by moving on a standard path which is determined from position data previously stored in the system, and that has a hand with a tool and a work-shape sensor which is located a predetermined distance in front of the tool and that corrects deviations from the standard path in real-time while the tool is operating, the system comprising:
- temporary storage means for receiving sensed data obtained when the tool operates, and for calculating and storing work-shape data using the sensed data;
interpolation determination means for selecting an interpolated point on the standard path as a target position for the tool;
selection means for generating a reference point corresponding to the interpolated point on the standard path, and for selecting the work-shape data that is closest to the reference point;
path correction means for generating target position and posture data for the tool based on the work-shape data from the selection means; and
robot control means for controlling the tool to trace a series of points corresponding to the target position and posture data from the path correction means.
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Abstract
This invention is a real-time tracking controller for a standard-path robot that detects a target point in advance, permitting higher-speed work. The robot uses both sensed data and previously taught data to accurately execute its task. Accurate control is obtained using target points corresponding to time intervals. Thus, even if the speed or path is changed during operation, accurate tracing is continuously executed.
91 Citations
14 Claims
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1. A control system for an industrial robot that tracks a work-shape by moving on a standard path which is determined from position data previously stored in the system, and that has a hand with a tool and a work-shape sensor which is located a predetermined distance in front of the tool and that corrects deviations from the standard path in real-time while the tool is operating, the system comprising:
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temporary storage means for receiving sensed data obtained when the tool operates, and for calculating and storing work-shape data using the sensed data; interpolation determination means for selecting an interpolated point on the standard path as a target position for the tool; selection means for generating a reference point corresponding to the interpolated point on the standard path, and for selecting the work-shape data that is closest to the reference point; path correction means for generating target position and posture data for the tool based on the work-shape data from the selection means; and robot control means for controlling the tool to trace a series of points corresponding to the target position and posture data from the path correction means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification