Dynamic Accelerator Response Remapping for Low-Speed Vehicle Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle powertrains with static accelerator response profiles are inefficient under various conditions, particularly in hybrid and electric vehicles, as they fail to adapt torque or power output effectively to changing driving scenarios such as creep, obstacle navigation, deceleration, and reverse motion.
Innovation Solution
A dynamic accelerator response management system that includes a controller communicably coupled to the accelerator and prime mover, which monitors vehicle speed and accelerator position to dynamically remap the prime mover's response based on conditions like creep, obstacle, deceleration, and reverse conditions, allowing for adaptive torque or power output adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a static accelerator response profile is used, then the system structure is simple, but the vehicle efficiency deteriorates under various driving conditions
Solution Approach 1:
The patent implements dynamic accelerator response management that continuously adapts the prime mover's torque and power output based on real-time vehicle speed and accelerator position. The system dynamically remaps the response characteristics to match current driving conditions, transitioning from a static lookup table to a dynamic, condition-dependent response system that optimizes energy efficiency across varying operational scenarios.
Solution Approach 2:
The system changes the operational parameters of the accelerator response by adjusting torque and power output based on vehicle speed and accelerator position. Different remapping conditions (creep, obstacle, deceleration, reverse) trigger different response parameters, allowing the prime mover to operate more efficiently across diverse driving scenarios rather than maintaining a fixed response characteristic.
2Device complexity
If a static accelerator response profile is used, then the control system is simple, but the adaptability to different driving conditions deteriorates
Solution Approach 1:
The control system transitions from static to dynamic by continuously monitoring vehicle speed and accelerator position, then adapting the prime mover response in real-time. The system detects different driving scenarios (creep, obstacle, deceleration, reverse conditions) and dynamically remaps the accelerator response curve accordingly, enabling versatile adaptation without requiring complex mechanical reconfiguration.
Solution Approach 2:
The system employs feedback mechanisms by continuously monitoring vehicle speed and accelerator position, then using this information to dynamically adjust the prime mover's torque and power output. The feedback loop enables the control system to adapt to changing driving conditions by comparing actual vehicle state with desired response characteristics and making real-time adjustments to optimize performance.
3Use of energy by moving object
If dynamic remapping is implemented, then the energy efficiency improves, but the device complexity increases
Solution Approach 1:
The system implements dynamic remapping that adjusts the accelerator response based on real-time conditions, improving fuel efficiency by optimizing torque and power delivery. The dynamic nature allows the system to respond to varying driving scenarios without requiring complete system redesign, maintaining a manageable level of complexity while achieving significant efficiency gains.
Solution Approach 2:
The system achieves improved fuel efficiency by changing the operational parameters (torque, power) of the prime mover based on vehicle speed and accelerator position. Rather than requiring complex mechanical modifications, the solution primarily involves software-based parameter adjustments and remapping, which reduces the physical complexity increase while maintaining the energy efficiency benefits.
4Adaptability or versatility
If dynamic remapping is implemented, then the adaptability improves, but the control complexity increases
Solution Approach 1:
The control system uses feedback from vehicle speed and accelerator position sensors to dynamically adjust the prime mover response. This feedback mechanism enables high adaptability to different driving conditions while managing control complexity through established sensor-controller-actuator loops, avoiding the need for overly complex control architectures.
Solution Approach 2:
The control system achieves multiple functions (creep control, obstacle navigation, deceleration management, reverse operation) through a single dynamic remapping mechanism. Rather than requiring separate control systems for each driving scenario, the universal dynamic remapping approach handles all conditions through unified logic, reducing overall control complexity while maintaining high adaptability.
Data Source
AI summary
An apparatus includes a position circuit structured to monitor a position of an accelerator of a vehicle and a speed circuit structured to monitor a speed of the vehicle. The position corresponds with an associated response of a prime mover of the vehicle. The associated response includes at least one of a torque output and a power output of the prime mover. The apparatus further includes a response management circuit structured to receive an indication regarding the position of the accelerator and the speed of the vehicle; determine that the indication satisfies a remapping condition, the remapping condition including at least one of a creep condition, an obstacle condition, a deceleration condition, and a reverse condition; and dynamically remap the associated response of the prime mover of the vehicle based on the position of the accelerator in response to the indication satisfying the remapping condition.