Front Wheel Motor Torque Control for Smooth Drift Exit
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Solution Overview
Problem
Existing systems fail to accurately calculate and apply target torque to the front wheel motor for exiting drift driving in electric vehicles, leading to non-linear vehicle behavior due to abrupt torque application.
Innovation Solution
A system that determines a driver's intention to exit drift driving based on the opening degree of the accelerator pedal and steering angle, calculating target torque for the front wheel motor by multiplying required torque by sensitivity and weight factors, and using a low-pass filter to smooth torque application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If target torque is calculated and applied to the front wheel motor for exiting drift driving, then the vehicle can exit drift driving, but abrupt torque application causes non-linear vehicle behavior
Solution Approach 1:
The system detects driver intention to exit drift driving in advance by monitoring accelerator pedal opening degree and steering angle, then calculates and applies target torque before the driver's manual intervention would occur. This preliminary action allows smooth transition from drift to normal driving by gradually applying torque to the front wheel motor based on detected driver intent, preventing abrupt torque changes and non-linear vehicle behavior.
2Productivity
If torque is applied to the front wheel motor during drift driving, then the vehicle can exit drift driving, but the torque application must be smooth to prevent non-linear behavior
Solution Approach 1:
The system continuously monitors accelerator pedal opening degree and steering angle to detect driver intention, then uses this feedback to calculate appropriate target torque for the front wheel motor. The torque calculation incorporates sensitivity factors and weight factors that adjust the torque magnitude based on the detected driver intent, ensuring smooth and controlled torque application that prevents non-linear vehicle behavior while exiting drift driving.
Data Source
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Figure 3
Figure 4A~4C
AI summary
An apparatus for calculating torque of a vehicle for exiting drift driving may include a processor and a non-transitory computer-readable storage medium storing a program which, when executed by the processor, causes: determining a driver's intention to exit drift driving based on an opening degree of an accelerator pedal and a steering angle; and calculating target torque of a front wheel motor based on the opening degree of the accelerator pedal when the driver's intention to exit drift driving is determined.