Electric Vehicle Mode Controller for MT Simulation
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Solution Overview
Problem
Electric vehicles lack the ability to seamlessly switch between simulating a manual transmission driving experience and normal electric vehicle operation, leading to potential discomfort and safety concerns for drivers accustomed to manual transmission vehicles, as the constant need for pseudo-gearshift and pseudo-clutch pedal manipulation compromises ease of driving and acceleration performance.
Innovation Solution
An electric vehicle equipped with an accelerator pedal, pseudo-clutch pedal, pseudo-gearshift, external sensor, and mode selector, along with a controller that uses an MT vehicle model and motor torque command map to switch between control modes based on driver input and environmental conditions, ensuring smooth transitions and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electric vehicle constantly requires manipulation of pseudo-gearshift and pseudo-clutch pedal to simulate manual transmission driving experience, then the driver can enjoy MT-like driving feeling, but the ease of driving and acceleration performance are compromised
Solution Approach 1:
The system dynamically switches between MT simulation mode and normal EV mode based on driver selection and detected conditions. The controller adjusts torque output characteristics to match either MT-like stepped torque changes or smooth EV torque delivery, allowing the driving experience to adapt without constant manual intervention for mode switching
Solution Approach 2:
The controller changes torque output parameters based on the selected mode. In MT simulation mode, torque is adjusted to simulate stepped changes characteristic of manual transmission vehicles. In normal EV mode, torque is delivered smoothly without simulation effects, optimizing acceleration performance and ease of driving
2Adaptability or versatility
If the control mode switches between MT simulation mode and normal EV mode, then the driver can choose different driving experiences, but a discontinuity in control may occur causing deviation between driver intention and actual control result
Solution Approach 1:
The system performs preliminary detection of switching conditions before executing mode transitions. The controller detects whether current vehicle conditions are appropriate for mode switching and prepares torque transition patterns in advance to ensure smooth transitions without sudden discontinuities that could cause control deviation
Solution Approach 2:
The controller continuously monitors vehicle operating conditions and adjusts torque output based on feedback from the detected state. During mode transitions, feedback ensures the actual torque delivery matches the intended control characteristics for the selected mode, preventing deviation between driver intention and actual vehicle response
3Adaptability or versatility
If torque variation control is performed to simulate speed change operation, then pseudo shift change can be produced, but it is impossible to determine the timing of executing the torque variation control voluntarily by the driver's own operation
Solution Approach 1:
The driver voluntarily controls the pseudo-gearshift operation through direct input to the pseudo-gearshift device. The controller detects the driver's operation of the pseudo-gearshift and executes torque variation control at the timing determined by the driver's own action, eliminating unwanted automatic pseudo-speed changes and allowing the driver to control when MT-like driving experience is simulated
Data Source
AI summary
The electric vehicle according to the present disclosure is configured to be able to select a traveling mode between an MT mode in which an electric motor is controlled with torque characteristics like an MT vehicle having a manual transmission and an internal combustion engine, and an EV mode in which the electric motor is controlled with normal torque characteristics. When the selection of the travelling mode is changed by a driver, the controller of the electric vehicle determines whether a control mode can be switched, based on a condition in which the electric vehicle is placed, and switches the control mode in accordance with the determination result.