Independent Front Rear Axle Torque Control
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Solution Overview
Problem
Existing methods for controlling torque in vehicle axles often compromise overall propulsion, as they either reduce or increase torque to compensate for understeer or oversteer, leading to a trade-off in vehicle performance.
Innovation Solution
A system and method that independently control torque for a vehicle's front and rear axles using a data unit and processor to obtain and process vehicle parameters, allowing for dynamic adjustments based on velocity, slip angles, and yaw rates, ensuring balanced propulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If torque is reduced or increased to compensate for understeer or oversteer, then vehicle handling is improved, but overall propulsion is sacrificed
Solution Approach 1:
The patent divides the single torque control system into two independent torque control systems, one for the front axle and one for the rear axle. This segmentation allows each axle to be controlled independently, enabling the system to maintain overall propulsion while addressing handling issues through differential torque distribution between axles rather than uniformly reducing torque across all wheels.
Solution Approach 2:
The patent applies different torque control strategies to different axles based on local vehicle dynamics conditions. The front axle torque control compensates for understeer/oversteer while the rear axle torque control maintains propulsion, allowing each part of the vehicle to have optimized torque characteristics for its specific function.
2Stability of the object's composition
If independent torque control for front and rear axles is implemented, then vehicle control and stability are enhanced, but system complexity increases
Solution Approach 1:
The patent combines the front and rear axle torque control systems into a single integrated control apparatus that receives inputs from sensors and processes vehicle dynamics parameters. This merging reduces overall system complexity by using a unified control architecture rather than completely separate control systems, while still achieving independent torque control for each axle.
Solution Approach 2:
The control apparatus performs multiple functions: it controls front axle torque for handling stability, controls rear axle torque for propulsion maintenance, and coordinates both to achieve overall vehicle stability. This multi-functionality reduces the need for additional specialized components.
Data Source
AI summary
Methods and systems for controlling torque for a front axle and a rear axle of a vehicle with independent front and rear propulsion systems are provided. A data unit is configured to obtain data for one or more parameters of a vehicle while the vehicle is being driven. A processor is coupled to the data unit, and is configured to provide torque to at least facilitate providing torque the front axle and the rear axle independently based on the one or more parameters.