Powertrain Torque Calibration for Driver Adaptation
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Solution Overview
Problem
Current vehicle powertrain calibrations do not adequately account for individual driver behavior and environmental conditions, resulting in inconsistent responses to pedal inputs across different locations and situations.
Innovation Solution
A powertrain system with a controller that adjusts torque responses based on driver identification and environmental conditions, switching between default and override calibration schedules depending on the driving location and style, ensuring tailored responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single default calibration schedule is used for all drivers and conditions, then device complexity is reduced and ease of operation is improved, but adaptability to different driving styles and environmental conditions deteriorates
Solution Approach 1:
The calibration system dynamically switches between default and override calibration schedules based on detected driving conditions. The controller monitors environmental sensors and driver behavior to determine when to apply customized calibration parameters, allowing the system to adapt its responsiveness without requiring a completely different calibration architecture for each scenario.
Solution Approach 2:
The override calibration schedule applies localized adjustments to specific torque response parameters only when particular driving conditions are detected (e.g., aggressive driving style, specific environmental conditions). This allows customization of torque delivery characteristics without redesigning the entire calibration system, maintaining simplicity while providing targeted adaptability.
2Adaptability or versatility
If torque response is customized for different drivers and conditions, then adaptability and performance are improved, but consistency of powertrain response across different locations deteriorates
Solution Approach 1:
The controller uses a universal default calibration schedule that provides consistent baseline torque response across all drivers and locations. When customized response is needed, the override calibration schedule layers additional adjustments on top of this universal baseline, allowing the system to maintain consistency as a foundation while providing customization when required by specific driving conditions or driver preferences.
3Productivity
If override calibration is applied based on environmental conditions, then powertrain performance in specific scenarios is improved, but device complexity increases due to multiple calibration schedules
Solution Approach 1:
Both default and override calibration schedules are pre-configured with optimized torque response parameters for specific driving conditions and driver behaviors. The controller simply needs to detect which pre-defined schedule is appropriate and switch between them, rather than dynamically calculating custom parameters in real-time. This reduces computational complexity while maintaining the ability to provide optimized performance for different scenarios.
Data Source
AI summary
A powertrain system includes a powertrain and a controller. The controller commands a change in torque produced by the powertrain for a given change in pedal position according to a default calibration schedule that is defined by a driving style of a driver such that the change in torque is different for different drivers.