Fluid Machine Warning-State Control for Inspection Exemption
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Solution Overview
Problem
Conventional fluid apparatuses require frequent inspections and maintenance, leading to increased man-hours and costs when anomalies occur, necessitating additional irregular inspections to resume operation.
Innovation Solution
Incorporating a detection unit that recognizes warning states and provides notifications about inspection exemptionable periods, allowing for continued operation without immediate inspection, and automatically stopping the system when the exemption period is exceeded, thereby reducing the need for frequent inspections and maintaining operation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fluid apparatus undergoes regular inspections and stops operation when anomalies occur, then operational safety is ensured, but man-hours for inspection and maintenance costs increase
Solution Approach 1:
The system performs preliminary actions by detecting warning states before anomalies occur and notifying operators in advance. This allows inspections to be scheduled proactively rather than reactively, reducing emergency stoppages and optimizing inspection timing to prevent anomalies before they impact operations
Solution Approach 2:
The system implements continuous feedback through monitoring operations and detecting warning states, then notifying operators of upcoming inspection needs. This closed-loop feedback mechanism enables dynamic adjustment of inspection schedules based on actual system conditions, preventing both premature inspections and missed anomalies
2Productivity
If the fluid apparatus performs non-normal operation in warning state, then operation continuity is maintained, but risk of anomalous state increases
Solution Approach 1:
The system dynamically adjusts operational parameters based on detected warning states, modifying operation modes to maintain continuity while managing risk. The notification system provides real-time information about inspection exemption periods, enabling operators to make informed decisions about continuing non-normal operations versus scheduling inspections
Solution Approach 2:
The system provides beforehand cushioning by notifying operators of warning states and inspection exemption periods in advance, creating a buffer period for planned inspections. This prevents sudden anomalies by allowing proactive scheduling of maintenance during the exemption period before the warning state escalates to an anomalous condition
Data Source
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AI summary
A fluid apparatus includes a hydraulic machine, a rotary electric machine connected to the hydraulic machine, and a power conversion controller that converts power from the rotary electric machine. A non-normal operation is performed in a warning state that differs from a normal state in which a normal operation is continued and an anomalous state in which operation is stopped to continue a stopped condition.