BEV Acceleration Control for Virtual Vehicle Feel Reproduction
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Solution Overview
Problem
Battery electric vehicles (BEVs) face limitations in reproducing acceleration feelings of virtual vehicles with characteristics exceeding their own acceleration capabilities, leading to increased costs when attempting to enhance acceleration capabilities.
Innovation Solution
A battery electric vehicle system that includes a processing circuit and storage device to manage multiple vehicle models, allowing drivers to select a target virtual vehicle, adjust vehicle speed and acceleration using coefficients, and control the electric motor to simulate the acceleration feeling of the selected virtual vehicle within the BEV's capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the acceleration capability of the battery electric vehicle is increased to realize the acceleration characteristics of virtual vehicles, then the acceleration feeling of virtual vehicles can be reproduced, but the costs of the battery electric vehicle increase unnecessarily
Solution Approach 1:
The patent creates virtual models of different vehicles with distinct acceleration characteristics and uses computational algorithms to simulate their acceleration feelings. Instead of physically modifying the BEV to match various vehicle types, the system copies the acceleration characteristics through software-based virtual models, allowing the driver to experience different acceleration profiles without hardware changes.
Solution Approach 2:
The system adjusts acceleration parameters dynamically by modifying motor torque output based on selected virtual vehicle characteristics. The control device changes operational parameters (torque, power delivery) in real-time to reproduce the acceleration feelings of different virtual vehicles, rather than requiring permanent hardware modifications for each vehicle type.
2Measurement precision
If the battery electric vehicle uses its limited acceleration capability to match virtual vehicles with higher acceleration characteristics, then the acceleration feeling cannot be reproduced faithfully, but increasing power characteristics causes unnecessary cost increase
Solution Approach 1:
The system dynamically adjusts motor torque and power delivery based on the selected virtual vehicle model and current driving conditions. The control device continuously modifies operational parameters to reproduce the acceleration characteristics of the target virtual vehicle, enabling flexible adaptation to different acceleration profiles without requiring the BEV to have maximum power capability for all possible virtual vehicles.
Solution Approach 2:
The patent applies partial action by selectively reproducing only the essential acceleration characteristics of virtual vehicles within the BEV's capability limits. The system focuses on matching the perceptible acceleration feeling rather than exactly replicating all physical parameters, achieving satisfactory reproduction accuracy without requiring excessive power capability.
Data Source
AI summary
Battery electric vehicle includes a processing circuit and a storage device. The storage device stores a database that manages a plurality of vehicle models modeled on a plurality of virtual vehicles. The processing circuit reads the target vehicle model corresponding to the target virtual vehicle selected by the driver from the database. In addition, the processing circuitry sets a coefficient of 1 or less in accordance with the acceleration characteristic of the target virtual vehicle, multiplies the vehicle speed of battery electric vehicle by the inverse of the set coefficient, and calculates the adjusted vehicle speed. Further, the processing circuit calculates the virtual acceleration of the target virtual vehicle using the target vehicle model, and calculates the adjusted virtual acceleration by multiplying the virtual acceleration by the set coefficient. The processing circuit then controls the electric motor to adjust the acceleration of battery electric vehicle to the adjusted virtual acceleration.