Drive Shaft Torque Control Using Wheel Speed Linkage
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Solution Overview
Problem
Existing vehicle torque control systems are limited in their ability to control torque across a full-speed domain, particularly during scenes like turning and evading, leading to inadequate torque control conditions.
Innovation Solution
A vehicle torque control method that acquires driving parameters, including wheel rotating speeds, to determine torque adjustment values for each drive shaft, allowing for comprehensive torque adjustments across a full-speed range and eliminating slip states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If scene recognition is limited to a certain vehicle speed range, then the control system complexity is reduced, but the torque control coverage is insufficient
Solution Approach 1:
The patent segments the torque control into two independent parts: scene recognition (which remains speed-range limited) and torque adjustment value determination (which uses full-speed wheel rotating speeds). This segmentation allows the scene recognition to stay simple while the torque control itself achieves full-speed coverage through independent wheel speed monitoring.
Solution Approach 2:
The torque adjustment value determination module serves multiple functions: it determines torque adjustments for different drive shafts, operates across the full vehicle speed range, and works independently of the scene recognition speed limitations. This multi-functionality enables comprehensive torque control coverage without increasing scene recognition complexity.
2Device complexity
If torque control is performed on a single drive shaft, then the control system is simpler, but the vehicle dynamic performance is insufficient
Solution Approach 1:
The patent merges torque control across multiple drive shafts by determining torque adjustment values for each drive shaft independently based on their respective wheel rotating speeds. The torque adjustment module then applies these adjustments simultaneously to multiple drive shafts, achieving comprehensive vehicle-level torque control that improves dynamic performance while maintaining manageable system complexity.
3Device complexity
If torque adjustment is not performed in full-speed domain, then the control conditions are limited, but the vehicle power requirements cannot be met
Solution Approach 1:
The patent implements dynamic torque adjustment across the full vehicle speed range by continuously monitoring wheel rotating speeds at any speed level and determining corresponding torque adjustment values. This dynamic approach ensures that torque control adapts to all operating conditions, meeting vehicle power requirements throughout the entire speed domain while maintaining straightforward control logic.
Data Source
AI summary
A vehicle torque control method includes: step 101, acquiring vehicle traveling parameters; step 102, determining a torque adjustment value of a driving shaft of a vehicle according to the vehicle traveling parameters; and step 103, adjusting the torque of the driving shaft of the vehicle according to the torque adjustment value, wherein the vehicle traveling parameters comprise wheel rotating speeds at two ends of the driving shaft of the vehicle. Further disclosed are a vehicle torque control apparatus, a vehicle and a storage medium. A torque adjustment value of each driving shaft of a vehicle is determined by means of wheel rotating speeds at two ends of the driving shaft of the vehicle, and torque adjustment is performed on all driving shafts of the vehicle, such that the torque adjustment is more comprehensive; and the torques of the driving shafts are adjusted in a linkage manner.