Dual Battery Foldable Pedal Stabilization
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Solution Overview
Problem
The existing foldable pedal systems in autonomous driving vehicles lack stability due to reliance on a single battery and motor system, increasing the risk of accidental disruption during autonomous driving.
Innovation Solution
An operation stabilization system utilizing two independent batteries, two independent motors, and two independent stroke sensors to control the foldable pedal apparatus, ensuring reliable pop-up and hiding operations and preventing accidents by sharing torque and monitoring sensor outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single battery and motor system is used in the foldable pedal apparatus, then the device complexity is reduced, but the reliability and operation stability deteriorate
Solution Approach 1:
The patent divides the single battery and motor system into two independent subsystems: a first battery and motor, and a second battery and motor. Each subsystem can independently control the pedal apparatus, ensuring that if one subsystem fails, the other can still maintain operation stability and prevent accidental activation.
Solution Approach 2:
The patent implements a failsafe mechanism by providing redundant battery and motor systems before any malfunction occurs. This allows the system to withstand potential failures in advance, maintaining reliable operation even when one subsystem experiences issues, thereby preventing accidental pedal activation during autonomous driving.
2Reliability
If two independent batteries and motors are used to improve reliability, then the operation stability is improved, but the device complexity increases
Solution Approach 1:
The patent segments the control system into two independent pathways, where each battery-motor pair can independently control the pedal apparatus. This segmentation provides redundancy without requiring complex integration mechanisms, as each subsystem operates autonomously.
Solution Approach 2:
The patent combines two independent battery-motor subsystems into a unified control architecture where both systems work together to control the same pedal apparatus. The control unit coordinates both subsystems, allowing them to function as a integrated redundant system rather than separate competing systems.
3Device complexity
If a single stroke sensor is used, then the device complexity is low, but the measurement precision and reliability of pedal position detection deteriorate
Solution Approach 1:
The patent divides the single sensor system into two independent stroke sensors, with each sensor independently detecting the pedal position. This segmentation allows for cross-validation of sensor readings, improving measurement precision and reliability without requiring complex sensor integration.
Solution Approach 2:
The patent implements a feedback mechanism where the control unit receives signals from both stroke sensors and compares their outputs. This feedback loop enables the system to detect discrepancies between sensor readings and adjust accordingly, ensuring accurate pedal position detection even if one sensor experiences interference or malfunction.
4Measurement precision
If two independent stroke sensors are used to improve detection reliability, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The control unit implements a feedback mechanism that continuously monitors and compares outputs from both stroke sensors. This feedback system automatically detects and compensates for sensor discrepancies, providing improved measurement precision through software-based coordination rather than complex hardware integration.
Solution Approach 2:
The dual sensor system performs self-validation by comparing its own outputs. The control unit automatically determines whether sensor readings are consistent and adjusts for any interference or malfunction without external intervention, thereby improving reliability through self-monitoring rather than additional complex control mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances operation stability and safety by preventing accidental pedal activation, maintaining vehicle control in both manual and autonomous modes, and providing a failsafe mechanism to prevent malfunctions.
Implementation Method 1
a first motor and a second motor disposed in the foldable pedal apparatus and connected to the first battery and the second battery to receive the power from the first and second batteries, respectively, wherein the first motor and the second motor respectively operate by receiving the control signals from the foldable pedal controller
Data Source
AI summary
An operation stabilization system for a foldable pedal apparatus of a vehicle includes: a first battery and a second battery disposed in the vehicle; a first vehicle controller and a second vehicle controller receiving power from the first battery and the second battery, respectively, and transmitting operation signals, respectively; a foldable pedal controller disposed in the foldable pedal apparatus to generate control signals by receiving the signals from the first vehicle controller and the second vehicle controller; and a first motor and a second motor disposed in the foldable pedal apparatus and connected to the first battery and the second battery to receive the power from the first and second batteries, respectively.