EV Pseudo-Manual Drive Control Using MT Torque Modeling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric vehicles lack the driving experience of manual transmission vehicles due to the absence of a transmission system, and simulating the torque characteristics of manual transmission vehicles using electric motors can be uncomfortable for drivers accustomed to manual transmissions.
Innovation Solution
The electric vehicle is equipped with a pseudo-gearshift and pseudo-clutch pedal, along with an operation mode selector and a controller that uses models of manual transmission vehicle torque characteristics and driver operations to simulate the driving experience of a manual transmission vehicle, allowing for optional automatic control of clutch and gear operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If torque variation control is performed to simulate speed change operation in an electric vehicle, then the driving feeling can be improved for drivers familiar with manual transmission vehicles, but it becomes impossible to determine the timing of executing the control voluntarily by the driver's own operation
Solution Approach 1:
The patent creates a pseudo-manual transmission system by copying the operational characteristics of manual transmission vehicles. The controller simulates clutch pedal operations and gearshift timing based on accelerator pedal operations, reproducing the driving feeling of manual transmission without actual mechanical transmission components. This allows drivers to experience manual transmission-like torque variations while maintaining electric vehicle simplicity.
Solution Approach 2:
The patent introduces an intermediary control system that mediates between the driver's accelerator pedal input and the motor torque output. The controller acts as an intermediary, automatically determining optimal timing for simulated gearshift operations based on vehicle speed, accelerator opening, and other parameters, thereby bridging the gap between driver intent and simulated manual transmission behavior.
2Ease of operation
If a transmission system is equipped in an electric vehicle to provide driving experience of manual transmission vehicle, then the driving feeling is improved, but the device complexity increases
Solution Approach 1:
The patent replaces the mechanical transmission system with an electronic control system. Instead of installing physical clutch pedals, gearshift levers, and transmission mechanisms, the invention uses software-based control to simulate manual transmission torque characteristics. The controller manipulates motor torque output to reproduce the feeling of gearshift operations, eliminating complex mechanical components while maintaining authentic driving experience.
Solution Approach 2:
The system creates a virtual copy of manual transmission behavior through software simulation. Rather than implementing actual transmission mechanics, the controller replicates the torque variation patterns and operational characteristics of manual transmission vehicles. This virtual copying approach provides authentic driving feelings without the weight, complexity, and space requirements of physical transmission systems.
Data Source
AI summary
The electric vehicle according to the present disclosure calculates motor torque using an MT vehicle model simulating an MT vehicle having a manual transmission and an internal combustion engine. In the first operation mode, an operation amount of a pseudo-clutch pedal and a shift position of a pseudo-gearshift are input to the MT vehicle model to reflect operation of the pseudo-clutch pedal and operation of the pseudo-gearshift in electric motor control. In the second operation mode where the operation of the pseudo-clutch pedal is not needed, an operation amount of a clutch pedal calculated by a driver model is input to the MT vehicle model instead of the operation amount of the pseudo-clutch pedal.