Vehicle Torque Control via Steering Angle and Speed
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Solution Overview
Problem
Current methods lack an accurate way to determine a vehicle's driving state and adjust power output accordingly, leading to instability and jitter during vehicle turns.
Innovation Solution
A vehicle torque control method that uses steering wheel angle and vehicle steering speed parameters to determine the driving state and adjust the output torques of the front and rear drivers, specifically through stepwise torque adjustments based on predefined coefficients and convergence coefficients during curve entering and exiting states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If output torque of wheels is not adjusted appropriately during vehicle turning, then vehicle stability deteriorates, but if torque adjustment is implemented without accurate driving state detection, then control precision remains insufficient
Solution Approach 1:
The system continuously detects steering wheel angle and steering speed, processes this information through a state determination module to identify driving states (straight, turning left, turning right), and uses this feedback to dynamically adjust motor torque. This closed-loop feedback mechanism ensures accurate driving state detection and appropriate torque control, resolving the contradiction between vehicle stability and detection precision.
Solution Approach 2:
A state determination module is introduced as an intermediary between the sensor inputs (steering wheel angle and speed) and the torque control output. This module processes the raw sensor data, determines the current driving state, and generates appropriate torque adjustment commands, thereby improving both the accuracy of driving state detection and the precision of torque control.
2Reliability
If torque adjustment is made during vehicle turning, then driving stability improves, but if torque adjustment is too aggressive, then vehicle jitter and shaking increase
Solution Approach 1:
The system dynamically adjusts torque based on the determined driving state. Different torque adjustment strategies are applied for different states (straight driving, turning left, turning right), with the adjustment magnitude and direction adapting to the specific driving condition. This dynamic adjustment improves stability while avoiding excessive or inappropriate torque changes that could cause jitter and shaking.
Solution Approach 2:
The system changes torque parameters dynamically based on driving state. The state determination module identifies whether the vehicle is in a straight or turning state, and the control module adjusts motor torque accordingly - increasing torque during turns to maintain stability and reducing torque during straight driving to prevent jitter. This parameter adaptation resolves the contradiction between stability improvement and jitter reduction.
Data Source
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AI summary
A vehicle torque control method. The method comprises: step S1, obtaining steering wheel angle and vehicle steering speed parameters; step S2, determining the current driving state of a vehicle according to the steering wheel angle and vehicle steering speed parameters; and step S3, controlling output torques of front and rear drivers of the vehicle according to the current driving state of the vehicle. Further disclosed are a processing apparatus, a vehicle, and a storage medium. The method determines the current driving state of the vehicle by means of a steering wheel angle and a vehicle steering speed, such that the determination accuracy is higher, and the torques of the drivers can be better accurately controlled according to the driving state, thereby improving the stability of the vehicle in the driving process.