Dual Power Supply Hub for Hydraulic Actuator Load Unloading
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Solution Overview
Problem
Testing systems face challenges in quickly and effectively reducing loads on expensive test articles to prevent damage, especially when power supply operations occur outside normal parameters.
Innovation Solution
A power and signal distribution hub with dual electrical power supplies that share the power load, each equipped with a monitoring circuit to detect operation outside normal parameters, allowing for controlled unloading of loads on test articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single power supply is used for the testing system, then the device complexity is reduced, but the reliability deteriorates when power supply operation occurs outside normal parameters
Solution Approach 1:
The power supply system is segmented into multiple independent power supply units (first power supply and second power supply), each capable of operating independently to supply power to the testing system. This segmentation allows the system to maintain reliability by switching between segments when one fails, while keeping each segment's internal complexity manageable.
Solution Approach 2:
The system incorporates redundant power supply capacity beforehand, where each power supply is sized to potentially handle the full load if needed. Monitoring circuits detect abnormal conditions before they cause system failure, and control logic is pre-programmed to switch between power supplies or initiate unloading sequences, cushioning against potential failures.
2Speed
If power supply operation occurs outside normal parameters, then the responsiveness to prevent damage is improved, but the risk of test article damage worsens
Solution Approach 1:
Monitoring circuits continuously provide feedback on power supply operational parameters (voltage, current, temperature). When parameters deviate from normal ranges, the feedback triggers control logic to initiate unloading sequences. This closed-loop feedback ensures rapid detection and response to abnormal conditions, enabling fast unloading while maintaining control to prevent test article damage.
Solution Approach 2:
The system performs preliminary actions by pre-configuring unloading sequences and control logic that automatically execute when abnormal conditions are detected. The control logic is prepared in advance to coordinate the unloading of test articles, ensuring that when power supply anomalies occur, the system can immediately initiate protective unloading without delay.
3Measurement precision
If dual power supplies with monitoring circuits are implemented, then the measurement precision of power supply status is improved, but the device complexity increases
Solution Approach 1:
The monitoring circuits are designed with multi-functionality, serving multiple purposes: detecting voltage deviations, current anomalies, temperature excursions, and coordinating with control logic for unloading sequences. This universal monitoring approach improves measurement precision across multiple parameters while avoiding the need for separate specialized circuits for each function, thereby limiting the increase in overall system complexity.
Data Source
AI summary
A power and signal distribution hub for providing power and operating signals to a plurality of channels of a testing system for operating one or more hydraulic actuators to apply loads to a test article is provided. The power and signal distribution hub includes a first power supply and a second power supply, connected to load share power to the testing system, the first power supply and the second power supply configured to distribute electrical power to the plurality of channels of the testing system. A monitoring circuit for each power supply configured to monitor operation of its respective power supply, and to provide a signal indicative of operation of its power supply outside of normal operation parameters of the power supply.