Accelerator Pedal Misoperation Prevention Logic
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Solution Overview
Problem
Conventional sudden acceleration prevention systems fail to effectively prevent sudden acceleration due to incorrect operation of the accelerator pedal, especially at higher speeds, leading to potential accidents, as they only control idle torque from a stop or low speeds and do not account for varying driver habits or road conditions.
Innovation Solution
A method and system that utilize a controller to monitor the accelerator pedal sensor output, determine if the operation is mis-operated by comparing it to predetermined brake and overlapping operation ranges, and apply learning control logic to limit vehicle output only when mis-operation is detected, incorporating vehicle speed, position, and road slope data to prevent sudden acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If idle torque control is applied during sudden accelerator pedal operation, then sudden acceleration is prevented, but vehicle speed is greatly reduced which may cause accidents on highways or steep slopes
Solution Approach 1:
The system changes the control parameters based on vehicle operating conditions. When the vehicle is detected to be on a highway or steep slope (specific conditions), the controller disables or modifies the idle torque control, allowing full accelerator response. Under normal conditions, the idle torque control remains active to prevent sudden acceleration from pedal misoperation.
2Reliability
If idle torque control is applied during sudden accelerator pedal operation, then sudden acceleration is prevented, but power performance of the vehicle is compromised
Solution Approach 1:
The controller dynamically adjusts the torque control parameters based on learned driver behavior patterns and current operating conditions. When sudden accelerator operation is detected, the system evaluates whether this matches the driver's normal behavior pattern. If it deviates significantly, idle torque control is applied to prevent sudden acceleration while maintaining power performance for legitimate acceleration requests.
3Reliability
If idle torque control is applied during sudden accelerator pedal operation, then sudden acceleration is prevented, but accidents may occur for drivers who frequently perform sudden operation
Solution Approach 1:
The system incorporates learning control logic that continuously monitors and learns the driver's accelerator pedal operation patterns over time. By analyzing the frequency, timing, and context of sudden accelerator operations, the system adapts to drivers who frequently perform sudden operations, distinguishing between intentional aggressive driving and accidental pedal misoperation, and adjusts the control response accordingly to prevent false prevention of legitimate acceleration.
Data Source
AI summary
A sudden acceleration prevention method for a vehicle includes the following steps, which may be performed by a controller: monitoring an output signal of an accelerator pedal sensor so as to obtain a detected operation state of an accelerator pedal, determining whether the detected operation state of the accelerator pedal is within a predetermined brake pedal operation range, determining whether the detected operation state of the accelerator pedal is within a predetermined accelerator pedal and brake pedal overlapping operation range if the detected operation state of the accelerator pedal is within the predetermined brake pedal operation range, and outputting an output reduction control signal of the vehicle if the detected operation state of the accelerator pedal is not within the accelerator pedal and brake pedal overlapping operation range.