EV Torque Control With Pseudo Clutch and Shift Simulation
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Solution Overview
Problem
Electric vehicles lack the ability to simulate the driving experience of conventional manual transmission vehicles, leading to discomfort for drivers accustomed to manual transmission, and existing solutions do not allow easy switching between electric vehicle and manual transmission modes without complicating driver operations.
Innovation Solution
An electric vehicle equipped with a pseudo clutch pedal, pseudo shift device, and a control device that includes a processor and memory to simulate the torque characteristic of a manual transmission vehicle, allowing drivers to switch between electric vehicle and manual transmission modes through a mode changeover device, enabling intuitive operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pseudo shift device and pseudo clutch pedal are added to simulate manual transmission operation, then the driving experience of MT vehicle is provided, but the device complexity increases
Solution Approach 1:
The patent creates virtual copies of manual transmission components (pseudo shift device, pseudo clutch pedal) that replicate the operational experience of MT vehicles without requiring actual mechanical transmissions. These pseudo devices are software-based interfaces that simulate gear shifting and clutch engagement sensations, allowing EV drivers to experience manual transmission driving characteristics while maintaining the simplicity of electric vehicle powertrains.
Solution Approach 2:
The patent replaces the mechanical transmission system with an electronic control system that uses software algorithms to simulate torque characteristics of manual transmission vehicles. The control device processes driver inputs from pseudo shift devices and pseudo clutch pedals, then adjusts motor torque output to replicate the feel of gear changes and clutch engagement, substituting mechanical complexity with electronic control.
2Adaptability or versatility
If mode switching function is added to switch between EV mode and MT mode, then the adaptability is improved, but the operation complexity increases
Solution Approach 1:
The patent designs the pseudo shift device and pseudo clutch pedal to serve dual purposes: they function as both the interface for simulating manual transmission operation and as the switching mechanism for changing between EV mode and MT mode. This multi-functionality eliminates the need for separate mode switching controls, reducing operational complexity while maintaining adaptability.
Solution Approach 2:
The patent merges the mode switching function with the existing pseudo shift device and pseudo clutch pedal operations. When the driver operates these pseudo devices, the system automatically determines the appropriate mode based on the operation pattern, combining what would traditionally be separate controls into a unified interface that reduces the number of distinct operations the driver must learn.
3Extent of automation
If torque fluctuation control is performed automatically based on vehicle speed and accelerator opening, then the pseudo shift change is achieved, but the driver's manual operation enjoyment is reduced
Solution Approach 1:
The patent implements a dynamic control system that adapts its level of automation based on driver input patterns. When the driver operates the pseudo shift device and pseudo clutch pedal, the system transitions from automatic torque fluctuation control to a mode that responds to driver commands, allowing the driver to actively engage in gear shifting operations while still benefiting from the simulated manual transmission experience.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor driver operations of the pseudo shift device and pseudo clutch pedal, then adjust torque control accordingly. This feedback loop allows the system to distinguish between automatic control scenarios and driver-initiated manual operations, providing appropriate torque responses that maintain both automation benefits and driver engagement.
Data Source
AI summary
An electric vehicle is configured to be able to perform running by an MT mode that controls an electric motor with a torque characteristic like an MT vehicle having a manual transmission and an internal combustion engine, and running by an EV mode that controls the electric motor with a normal torque characteristic. The electric vehicle includes a mode changeover switch for switching to the running by the MT mode.