Single-Pedal Torque Control for Off-Road Wheel Speed Management
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Solution Overview
Problem
Navigating off-road terrain with obstacles requires coordinated control of propulsive and braking torque, which is challenging for novice drivers using traditional two-pedal driving techniques.
Innovation Solution
A vehicle control system that uses a single pedal to control net torque, incorporating a torque control module that determines propulsive and braking torque requests based on pedal position, vehicle speed, and pitch, allowing for smooth wheel speed control without the need for two-pedal driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional two-pedal driving technique is used for off-road terrain navigation, then coordinated propulsive and braking torque control can be achieved, but the operation becomes difficult for novice drivers
Solution Approach 1:
The patent combines the functions of the accelerator pedal and brake pedal into a single pedal system. The single pedal controls both propulsive torque (when pressed forward) and braking torque (when pressed rearward), eliminating the need for coordinated two-pedal operation while maintaining torque control coordination through electronic control module integration.
Solution Approach 2:
The single pedal is designed to perform multiple functions: it provides propulsive torque control when pressed in the forward direction and braking torque control when pressed in the rearward direction. This multi-functional design allows one pedal to replace the traditional two-pedal system, simplifying operation while maintaining control capability.
2Ease of operation
If a single pedal controls both propulsive and braking torque, then ease of operation is improved, but the system complexity increases
Solution Approach 1:
The electronic control module serves as an intermediary between the single pedal and the torque delivery systems. It receives the single pedal input signal and translates it into appropriate propulsive or braking torque commands, managing the system complexity internally while presenting a simple interface to the driver.
Solution Approach 2:
The patent replaces the traditional mechanical two-pedal system with an electronically-controlled single pedal system. The electronic control module uses sensor signals and electronic actuation to deliver torque control, substituting complex mechanical linkages with electronic control architecture that achieves the same function with simplified driver input.
Data Source
AI summary
A vehicle control system for a vehicle may include a controller, a single pedal and a torque control module. The controller may be operably coupled to components and/or sensors of the vehicle to receive information indicative of operational intent of an operator of the vehicle and information indicative of vehicle status. The single pedal may be configured to provide the information indicative of operational intent. The torque control module may be configured to generate both a propulsive torque request and a braking torque request based on the information indicative of the operational intent and the information indicative of vehicle status.