Vehicle Speed Stabilization via Accelerator Pedal Pattern Detection
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Solution Overview
Problem
Drivers face challenges in maintaining a constant vehicle speed, leading to unnecessary speed changes and reduced fuel efficiency, especially when using the accelerator pedal, due to difficulties in consistently applying the cruise control function and anxiety about releasing the pedal.
Innovation Solution
A method that determines whether a vehicle is driving at a fixed speed by detecting changes in the accelerator pedal and storing change patterns to infer the driver's intention, allowing the vehicle to maintain cruise speed independently of pedal changes, thereby preventing unnecessary speed variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If drivers continuously step the accelerator pedal to maintain fixed speed, then driving speed stability is improved, but driver fatigue and anxiety increase
Solution Approach 1:
The system automatically detects unintended accelerator pedal changes and corrects vehicle speed without requiring continuous driver intervention. The ECU monitors pedal position changes and autonomously adjusts driving force to maintain intended speed, allowing the system to serve itself rather than requiring constant driver attention.
Solution Approach 2:
The system implements feedback by continuously monitoring accelerator pedal position and vehicle speed, then using this information to detect unintended changes and generate corrective control signals. The ECU compares current pedal position with stored reference values and adjusts driving force based on detected deviations, creating a closed-loop control system that maintains speed stability.
2Use of energy by moving object
If cruise control function is used to maintain fixed speed, then fuel efficiency is improved, but driver acceptance and usage rate remain low
Solution Approach 1:
The system acts as an intermediary between the driver's intended speed and the vehicle's actual speed by subtly correcting unintended pedal changes rather than fully engaging traditional cruise control. This intermediate approach maintains driver control perception while achieving fuel efficiency benefits, making the system more acceptable to drivers who are anxious about releasing the pedal.
Solution Approach 2:
The system changes the parameter of accelerator pedal position by detecting unintended changes and generating compensating control signals. When unintended pedal changes are detected, the ECU adjusts the driving force parameter to counteract the change and maintain the intended speed, effectively modifying the pedal position parameter through electronic control.
3Reliability
If traditional cruise control is released due to brake pedal manipulation, then safety is improved, but driver convenience deteriorates due to requiring re-setting
Solution Approach 1:
The system performs preliminary action by storing the intended vehicle speed before brake manipulation occurs. When the brake pedal is detected, the system has already recorded the reference speed value, enabling it to automatically resume maintaining that speed after braking without requiring driver re-input or system re-setting.
Solution Approach 2:
The system maintains continuity of useful action by preserving the intended speed information through brake manipulation and automatically restoring speed maintenance after braking. The ECU continues to monitor and control vehicle speed continuously, ensuring uninterrupted speed control functionality without requiring driver intervention to re-establish the control state.
Data Source
AI summary
A method for controlling a vehicle driving may include determining whether a vehicle is driving at a fixed speed, recording, including detecting a change in a vehicle speed or a state change of a vehicle speed change device while driving and storing a change pattern when the vehicle is driving at the fixed speed, determining a driver's driving intention based on the detected change pattern, and controlling the driving state of the vehicle depending on the determined driving intention.