Adaptive Temperature Compensation for Coordinate Measuring Machines
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Solution Overview
Problem
Existing temperature compensation methods for coordinate measuring machines are static and do not account for dynamic temperature gradients and machine-specific environmental conditions, leading to inaccurate measurements under varying environmental conditions.
Innovation Solution
An adaptive temperature model that can be individually adjusted based on a database, incorporating temperature gradients and machine-specific geometric behavior, using a combination of characteristic maps, regression models, and AI models like neural networks, to provide precise compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a static temperature model is used for temperature compensation, then the device complexity is reduced and ease of operation is improved, but measurement precision deteriorates under varying environmental conditions
Solution Approach 1:
The patent implements an adaptive temperature model that dynamically adjusts compensation parameters based on real-time temperature measurements and environmental conditions. The system transitions from a static compensation approach to a dynamic one that continuously adapts to changing temperature gradients and machine-specific behaviors, thereby improving measurement precision without requiring overly complex manual calibration procedures.
Solution Approach 2:
The system incorporates feedback mechanisms by continuously monitoring temperature conditions and using this information to adjust compensation parameters. The adaptive temperature model processes temperature measurements and feeds back corrected coordinate values, creating a closed-loop system that automatically compensates for thermal effects based on actual operating conditions.
2Measurement precision
If temperature compensation is performed using a static model determined on a few machines, then the ease of manufacture is improved and device complexity is reduced, but measurement precision deteriorates for individual machines with different environmental conditions
Solution Approach 1:
The adaptive temperature model enables each coordinate measuring machine to self-adjust its compensation parameters based on its specific environmental conditions and machine characteristics. The system automatically adapts to the individual machine's thermal behavior through continuous monitoring and adjustment, eliminating the need for manual, machine-specific calibration while maintaining high measurement precision.
Solution Approach 2:
The system changes compensation parameters dynamically based on measured temperature conditions and environmental factors. By adjusting compensation parameters in real-time according to actual operating conditions rather than using fixed parameters determined during manufacturing, the system achieves accurate compensation for each individual machine without requiring complex manual setup procedures.
3Measurement precision
If static temperature compensation parameters are used, then loss of time during operation is reduced, but measurement precision deteriorates when exposed to different environmental conditions at installation sites
Solution Approach 1:
The patent implements dynamic adaptation of temperature compensation parameters based on real-time environmental conditions at the installation site. The system continuously monitors temperature gradients and adjusts compensation parameters accordingly, enabling the coordinate measuring machine to adapt to different environmental conditions across various installation locations while maintaining high measurement precision.
Data Source
AI summary
A coordinate measuring machine includes controlled machine axes for performing measuring movements for component measurement, having at least one measuring device, such as a tactile measuring device or an optical measuring device, held by at least one of the machine axes and movable by of at least one of the machine axes, for detecting uncompensated coordinate measured values on a component to be measured, having a device for temperature compensation of the uncompensated coordinate measured values by a temperature model, wherein the temperature model is designed to process one temperature measured value or a number of temperature measured values as input variables, wherein the temperature model has compensation parameters for the uncompensated coordinate measured values and/or compensated coordinate measured values as output variables, wherein the temperature model is adaptive and adjustable on the basis of a database.