Sub-Device Suitability Control Using Model-Based Operation Comparison
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Solution Overview
Problem
Existing control devices for industrial machines struggle to determine the suitability of replaced sub-devices based on varying capabilities, often leading to unsuitable replacements despite physical compatibility.
Innovation Solution
A determination device and control device system that selects and compares actual operation characteristics with estimated model characteristics for each type of sub-device, determining suitability based on differences between the two, allowing for customized suitability criteria for different sub-devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sub-device is replaced with one that has a common interface for physical connection, then the ease of replacement is improved, but the suitability of the replaced sub-device cannot be guaranteed
Solution Approach 1:
The control device obtains actual operation information from the replaced sub-device and compares it with model information representing expected characteristics. This feedback mechanism determines whether the replaced sub-device meets required capabilities, ensuring suitability while maintaining ease of replacement through standardized interfaces
Solution Approach 2:
The system changes from relying solely on physical interface compatibility to also considering operational parameter compatibility. By monitoring and comparing operational parameters (actual vs. model information), the system ensures that replaced sub-devices meet capability requirements beyond just physical connection
2Device complexity
If a single determination criterion is used for all sub-device types, then the device complexity is reduced, but the measurement precision of suitability determination deteriorates
Solution Approach 1:
The determination criterion is segmented into multiple types corresponding to different sub-device types. The control device selects appropriate model information based on the specific sub-device type being evaluated, enabling precise suitability determination for each device category while maintaining a manageable overall system structure
Solution Approach 2:
The control device implements a universal determination framework that handles multiple sub-device types through a common process flow. The system universally applies the compare-determine-output structure while adapting the specific criteria through model information selection, achieving both simplicity and precision
Data Source
AI summary
In a determination device including at least one sub-device and a control device that controls the sub-device, and determining suitability of the sub-device, the control device includes a selection unit that selects a type of an actual operation characteristic to be obtained from the sub-device, a model information obtaining unit that obtains, as model information, an operation characteristic estimated to be output from the sub-device that is suitable, the operation characteristic corresponding to the selected type, an operation information obtaining unit that obtains actual operation information representing operation information regarding the actual operation characteristic of the sub-device, a determination unit that determines the suitability of the sub-device in accordance with a difference between the obtained actual operation information and the obtained model information, and a determination result output unit that outputs a determination result of the determination unit.