Adaptive EV Pedal Stroke Control System
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Solution Overview
Problem
Existing vehicle control systems are not customizable to individual users' driving habits, leading to inefficient engine or brake response, as they are typically designed for a general range of use rather than specific user preferences.
Innovation Solution
A control system that adjusts the power output based on user-specific profiles, recorded through a memory storage device, to center the most commonly used power settings within a central range of the variable input control, allowing for personalized mapping of pedal positions to power levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If control pedals are designed for general use, then they can accommodate a broad range of users, but they cannot optimize performance for individual users' driving habits
Solution Approach 1:
The system performs preliminary actions by recording user pedal inputs and power level selections over time, building a profile database before optimization is needed. This historical data collection enables later customization without requiring complex real-time analysis during driving.
Solution Approach 2:
The system implements feedback by continuously monitoring user interactions with the control pedal and power level selections, then using this feedback to automatically adjust and optimize the control mapping. The control unit learns from user behavior patterns and adapts the pedal-to-power relationship accordingly.
2Speed
If pedal displacement to power response ratio is increased for rapid acceleration, then aggressive drivers benefit, but gradual acceleration becomes less controlled
Solution Approach 1:
The system applies dynamics by making the control mapping adjustable and adaptive rather than fixed. The pedal-to-power relationship changes dynamically based on user preferences and recorded behavior, allowing the same physical pedal to provide different acceleration characteristics for different users or even for the same user over time.
Solution Approach 2:
The system changes parameters by adjusting the mapping between pedal displacement and power output based on recorded user behavior. The control unit modifies acceleration curves, response thresholds, and power delivery characteristics to match individual user preferences, transforming a static control system into an adaptive one.
3Stability of the object's composition
If control mapping is fixed for gradual acceleration, then smooth braking is achieved, but rapid response to aggressive inputs is delayed
Solution Approach 1:
The braking system applies dynamics by making the brake response characteristics adjustable based on user behavior. The mapping between brake pedal displacement and braking force changes dynamically, providing smooth gradual braking for conservative users and rapid response for aggressive drivers, with the system adapting to each user's preferences.
Solution Approach 2:
The system changes parameters by adjusting brake response curves and force application rates based on recorded user braking patterns. The control unit modifies deceleration profiles, force application timing, and pedal-to-force mapping to optimize both smoothness and response speed for individual users.
Data Source
AI summary
This application discusses various ways to adjust the performance of a variable input control in accordance with previous use data. In some embodiments, the previous use data can be associated with particular users of the variable input control. In this way, a response provided by the user input control can be adjusted to accommodate particular patterns of use on a user by user basis. In some embodiments, the variable input control can take the form of an accelerator pedal of a vehicle. Performance of the accelerator pedal can be adjusted by changing an amount of engine power provided for a particular accelerator pedal position. The adjustment can arrange commonly utilized power settings in the middle of the accelerator pedal range of motion to make manipulation of the accelerator pedal more comfortable and convenient for each user of the accelerator pedal.