Industrial Robot Motion Accuracy Compensation via Pre-Calibrated Sub-Area Parameters
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Solution Overview
Problem
Industrial robots face inefficiencies in motion accuracy calibration due to periodic testing, changing operating conditions, and the need for comprehensive motion parameter analysis, which affects their operating efficiency and accuracy.
Innovation Solution
An industrial robot motion accuracy compensation method and system that establishes a motion parameter database with various reference operating conditions, allowing for real-time determination and interpolation of motion parameters based on current conditions, thereby optimizing motion accuracy without extensive testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If periodic testing and calibration are performed to obtain motion accuracy, then motion accuracy can be improved, but operating efficiency deteriorates due to long testing time
Solution Approach 1:
The patent pre-divides the operating area into multiple sub-areas and pre-calibrates motion parameters for each sub-area before actual operation. When the robot needs to operate, the system directly retrieves pre-calibrated parameters for the current sub-area, eliminating the need for time-consuming periodic testing and calibration during operation.
Solution Approach 2:
The patent segments the entire operating area into multiple sub-areas based on motion characteristics. Each sub-area has its own dedicated motion parameters calibrated in advance. This segmentation allows the system to quickly select appropriate parameters without analyzing the entire operating area, significantly reducing calibration time while maintaining accuracy.
2Manufacturing precision
If comprehensive motion parameter analysis is performed for the entire operating area, then motion accuracy is maintained, but the complexity of calibration increases
Solution Approach 1:
The patent divides the operating area into multiple sub-areas with distinct motion characteristics. Each sub-area is calibrated independently with specific motion parameters, avoiding the complexity of analyzing the entire operating area as a single unit. This segmentation simplifies the calibration process while maintaining accuracy for each specific region.
Solution Approach 2:
The patent applies different motion parameters to different sub-areas based on their specific motion characteristics and requirements. Instead of using a single comprehensive set of parameters for the entire operating area, the system tailors parameters locally to each sub-area, improving accuracy while reducing the complexity of finding a universal parameter set.
3Manufacturing precision
If the entire operating area is analyzed to obtain comprehensive motion parameters, then motion parameters are obtained, but motion accuracy deteriorates for specific operating areas
Solution Approach 1:
The patent segments the operating area into multiple sub-areas and calibrates motion parameters specifically for each sub-area. This allows the system to obtain precise parameters tailored to each region's characteristics, rather than using averaged comprehensive parameters that reduce precision for specific areas.
Solution Approach 2:
The patent implements local quality by determining motion parameters specific to each sub-area based on its unique motion characteristics. The system selects or calibrates parameters locally for the current operating sub-area, ensuring high precision for that specific region rather than using generalized parameters that compromise accuracy.
4Device complexity
If motion parameters are calibrated for single operating conditions, then calibration is simplified, but adaptability deteriorates when operating conditions change
Solution Approach 1:
The patent segments operating conditions into different sub-areas and calibrates parameters for each segment. When operating conditions change, the system identifies the current sub-area and selects the corresponding pre-calibrated parameters, providing adaptability without requiring full recalibration. This maintains calibration simplicity while enabling condition adaptability.
Solution Approach 2:
The patent implements a dynamic parameter selection mechanism that automatically adjusts motion parameters based on changing operating conditions. The system monitors current operating conditions, identifies the corresponding sub-area, and dynamically selects appropriate parameters from pre-calibrated sets, maintaining both simplicity and adaptability.
Data Source
AI summary
An industrial robot motion accuracy compensation method includes: establishing a motion parameter database, wherein the motion parameter database includes a plurality of different reference operating conditions and a motion parameter of the industrial robot corresponding to each reference operating condition, and each reference operating condition is formed by combining each element in each set in a total set of operation conditions; acquiring a current operating condition of the industrial robot; determining whether there is a reference operating condition matched with the current operating condition in the motion parameter database; if yes, taking a motion parameter corresponding to the matched reference operating condition as a motion parameter corresponding to the current operating condition; if no, performing an interpolation on a motion parameter corresponding to the current operating condition, and taking an interpolation result as the motion parameter corresponding to the current operating condition.