Steering Powerpack Resistance Intermittency Detection
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Solution Overview
Problem
Existing systems fail to accurately detect intermittent degradation in electrical connections within vehicle steering systems, leading to potential loss of steering assist or angle control functions due to increasing resistance over time, which can cause reduced performance or complete failure.
Innovation Solution
Implementing a method to detect degradation intermittencies by using a processor to calculate adaptive control thresholds based on resistance measurements, comparing measurements to these thresholds, and performing actions in response to detected degradation, such as adjusting power control or notifying the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing monitoring systems are used, then system simplicity is maintained, but detection accuracy of intermittent degradation is insufficient
Solution Approach 1:
The system dynamically adjusts monitoring parameters and thresholds based on operating conditions. The control threshold is not fixed but adapts to account for normal resistance variations due to temperature, humidity, and electrical load changes, enabling accurate detection of actual degradation while avoiding false alarms from environmental fluctuations.
Solution Approach 2:
The system continuously monitors resistance values and compares them against adaptive thresholds, providing feedback that triggers alerts when degradation is detected. This closed-loop feedback mechanism enables the system to learn from historical data and improve detection accuracy over time while maintaining manageable complexity through automated decision-making.
2Reliability
If no monitoring system is implemented, then device complexity remains low, but reliability of steering systems deteriorates due to undetected degradation
Solution Approach 1:
The system performs preliminary monitoring and detection of resistance changes before they lead to actual system failure. By continuously measuring electrical resistance and comparing it to adaptive thresholds, the system identifies degradation trends early, allowing for preventive maintenance before the electrical connection fails completely and causes steering system malfunction.
Solution Approach 2:
The monitoring system is integrated into the existing steering control unit, utilizing existing processors and sensors rather than requiring completely separate monitoring hardware. The system serves itself by using its own operational data to establish baseline resistance values and detect deviations, reducing the need for external calibration and maintenance.
3Measurement precision
If continuous monitoring is performed, then detection capability is improved, but energy consumption increases
Solution Approach 1:
The system performs resistance measurements at periodic intervals rather than continuously, reducing energy consumption while maintaining effective monitoring. The measurement frequency is optimized to detect degradation trends without requiring constant power, and the system can adjust the monitoring interval based on operating conditions and detected degradation rates.
Solution Approach 2:
The system changes monitoring parameters dynamically based on operating conditions. During normal operation, measurements are performed at lower frequency to conserve energy. When degradation is detected or during critical operating conditions, the system increases measurement frequency and adjusts thresholds accordingly, optimizing the balance between detection capability and energy consumption.
Data Source
AI summary
A method for detecting degradation intermittencies in an electrical connection in a steering system of a vehicle includes, using a processor configured to execute instructions, receiving an input indicative of a plurality of measurements of resistance associated with the electrical connection, calculating, based on the received input, at least one adaptive control threshold, comparing a first measurement of the plurality of measurements to the at least one adaptive control threshold, determining whether the electrical connection has a degradation intermittency in response to the comparison between the first measurement and the at least one adaptive control threshold, and performing at least one action in response to determining that the electrical connection has the degradation intermittency.