Drive Train Damage Localization for Selective Load Relief
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Solution Overview
Problem
Existing methods for monitoring and addressing mechanical damage in power transmission devices within drive trains, such as those in wind energy plants or vehicles, are inadequate in localizing damage precisely and reducing mechanical stress effectively, leading to potential system failures and increased maintenance costs.
Innovation Solution
Implementing a monitoring system using sensors like acceleration, structure-borne sound, and vibration sensors to detect and localize mechanical damage in power transmission devices, allowing for controlled reduction of mechanical stress at specific damage locations through actuator control, thereby maintaining overall power output while alleviating localized damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive is completely switched off when damage is detected, then the damage progression is prevented, but the downtime and loss of productivity increase significantly
Solution Approach 1:
The patent applies local quality by differentiating the response based on the severity and type of damage detected. Instead of a uniform complete shutdown, the system implements localized stress reduction only in the affected areas while maintaining operation in healthy regions. This allows the drive to continue operating with reduced load on damaged components, preventing total failure while minimizing downtime.
Solution Approach 2:
The system dynamically adjusts the operational parameters based on real-time damage assessment. The control unit modifies torque distribution, speed profiles, and load allocation dynamically according to the detected damage state. This dynamic adaptation enables the drive to operate in a protective mode that prevents further damage while maintaining partial productivity, rather than static complete shutdown.
2Measurement precision
If multiple sensors and complex monitoring systems are deployed to precisely localize damage, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The monitoring system is segmented into modular sensor units distributed at strategic locations within the drive train. Each sensor monitors specific components (gears, bearings, shafts) independently, and the control unit processes signals from individual segments. This segmentation allows precise localization of damage without requiring a fully interconnected complex monitoring network throughout the entire system.
Solution Approach 2:
The control unit acts as an intermediary that receives signals from multiple sensors, processes them using damage detection algorithms, and translates them into actionable insights about damage location and severity. This intermediary processing layer simplifies the overall system architecture by centralizing the complex analysis functions while keeping the sensor network relatively simple and distributed.
3Reliability
If the mechanical load is reduced at damaged locations, then the damage progression is delayed, but the overall power output and productivity decrease
Solution Approach 1:
The load reduction is applied locally only to the damaged components or specific gear stages, while healthy components continue to operate at full capacity. The control unit redistributes the mechanical load by adjusting torque distribution across different power transmission paths, concentrating stress relief where needed while maintaining overall power output through alternative load paths.
Solution Approach 2:
Instead of reducing the load uniformly across the entire drive system, the patent applies partial action by selectively reducing stress only on damaged components. The control unit modulates the degree of load reduction based on damage severity, applying just enough stress relief to prevent further damage progression while minimizing the impact on overall productivity and power output.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach delays damage progression, reduces downtime, and lowers maintenance costs by enabling targeted relief of damaged areas within power transmission devices, maintaining operational performance and extending service life.
Implementation Method 1
Implementing a monitoring system using sensors like acceleration, structure-borne sound, and vibration sensors to detect and localize mechanical damage
Implementation Method 2
Implementing a monitoring system using sensors like acceleration, structure-borne sound, and vibration sensors to detect and localize mechanical damage
Data Source
AI summary
A method for operating a drive train having a power generator, a mechanical power transmission device, and a power receiver wherein the power transmission device is monitored to detect mechanical damage and/or the development of mechanical damage to the power transmission device, wherein detected damage and/or detected damage development is localized and the power generator, the power transmission device, and/or the power receiver are/is controlled such that a mechanical load at the localized damage location and/or damage development location is selectively reduced. A program product including program code sections with which such a method is feasible when the program product is executed on a programmable controller, a computer, or other programmable device.