Vehicle Control System Using Dynamic Acceleration Weighting
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Solution Overview
Problem
Conventional vehicle control systems struggle to accurately reflect a driver's intention and adjust vehicle characteristics in response to varying driving conditions and environments, often leading to uncomfortable driving experiences due to inaccurate judgment of driving style and intention.
Innovation Solution
A vehicle control system that weights longitudinal acceleration detection values and parameters based on driving conditions, adjusting weights inversely to accurately judge and respond to the driver's preference, particularly by normalizing these values within a tire friction circle to enhance the accuracy of driving preference and behavior judgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual switching of drive modes is implemented, then driving characteristics can be changed according to driver need, but driver operation complexity increases and response time is delayed
Solution Approach 1:
The system automatically detects driver intention through accelerator pedal operation patterns and vehicle behavior, then autonomously adjusts driving characteristics without requiring manual driver input. The ECU serves itself by monitoring its own operational parameters and making real-time adjustments to transmission control, engine control, and other vehicle systems based on detected driving style.
2Adaptability or versatility
If drive mode switching is implemented, then driving characteristics can be changed, but response time is delayed due to manual switch operation
Solution Approach 1:
The system continuously monitors accelerator pedal operation and vehicle behavior in real-time, detecting driver intention before a mode change is actually needed. By preliminarily identifying the desired driving characteristic through ongoing analysis of driving patterns, the system can transition between modes proactively, eliminating the time delay associated with manual switching.
3Extent of automation
If conventional acceleration-based judgment is used, then driving style can be detected, but accuracy is reduced due to vehicle behavior changes from driving environment and unexpected operations
Solution Approach 1:
The system dynamically adjusts its detection parameters and weighting factors based on current driving conditions, vehicle state, and environmental factors. Rather than using fixed thresholds for acceleration-based judgment, the system adapts its criteria in real-time to account for variations in road conditions, traffic situations, and vehicle load, thereby maintaining high detection accuracy across diverse operating scenarios.
Data Source
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AI summary
A vehicle control system configured to judge a vehicle behavior or a driving preference of a driver based on acceleration of the vehicle including at least longitudinal acceleration. An acceleration value used in the judgment is obtained on the basis of a weighted detection value of the actual longitudinal acceleration of the vehicle, and a weighted parameter which is varied by an operation to increase a driving force of the vehicle executed by the driver. A weight on the parameter is reduced in case a weight on the detection value of the longitudinal acceleration is increased, and the weight on the parameter is increased in case the weight on the detection value of the longitudinal acceleration is reduced.