EV Drive Control with Pedal-Mapped Constant Speed Modes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electric vehicle drive systems require frequent operation of the accelerator pedal to maintain constant speed, leading to increased driver burden and labor intensity, and lack multiple control strategies suitable for various application scenarios.
Innovation Solution
An electric vehicle drive control method that uses a pre-configured reference table of steady speeds and throttle powers to determine target motor drive power based on throttle opening information, allowing the vehicle to travel at steady speeds and accommodating different application scenarios by distinguishing between steady speed and overspeed throttle ranges, and incorporating multiple operating modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional throttle control is used, then the vehicle can operate, but the driver burden and labor intensity increase due to frequent accelerator pedal operation
Solution Approach 1:
The system enables self-service by automatically maintaining constant vehicle speed through the controller adjusting motor output based on detected speed deviations, eliminating the need for continuous driver intervention and frequent accelerator pedal operations
Solution Approach 2:
The system implements feedback control by continuously detecting vehicle speed, comparing it with the target constant speed, and automatically adjusting motor output power based on the speed deviation to maintain stable operation without frequent driver input
2Adaptability or versatility
If conventional throttle control is used, then the vehicle can travel at various speeds, but multiple control strategies for different application scenarios are not provided
Solution Approach 1:
The system applies dynamics by implementing multiple operating modes (economic mode, normal mode, sport mode) that dynamically adjust the throttle operating curve based on driver selection, allowing the same control system to adapt to different driving scenarios and preferences without increasing physical system complexity
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
An electric vehicle drive control method comprises: acquiring accelerator pedal position information of an electric vehicle (S11); determining, on basis of a pre-configured steady speed versus accelerator pedal position reference table, target motor driver power corresponding to the acquired accelerator pedal position information (S12), wherein the steady speed versus accelerator pedal position reference table stores relationships between multiple pieces of accelerator pedal position information and corresponding motor drive power, and each motor drive power value corresponds to a different steady speed of the electric vehicle; and driving an electric motor of the electric vehicle on the basis of the target motor drive power, such that the electric vehicle travels at a constant speed according to a target steady speed corresponding to the target motor drive power (S13). The present application further relates to an electric vehicle drive control system. The method avoids heavy operation burden and difficulties caused by frequently operating an accelerator pedal, enables the electric vehicle to travel at different steady speeds according to different accelerator pedal position information, and improves the driving experience of users.