Electric Vehicle Control Method for Regenerative Braking Based on Road Roughness
This technology relates to an electric vehicle control method that reduces creep torque during braking and controls regenerative braking by detecting road surface roughness using vibration sensors.
Conventional regenerative braking systems often struggle to balance ride comfort and braking stability because they fail to account for road surface conditions.
To address this, this technology uses vibration sensors to categorize road roughness into levels and adjusts the control method accordingly, enabling regenerative braking optimized for the specific road surface.
Key Features:
- Electric vehicle control method that reduces creep torque below a reference value upon braking and performs regenerative braking
- Configuration where road condition data is input into the hybrid controller, allowing the control method to vary based on the road state
- Includes a vibration sensor to detect vibrations caused by road roughness and receives road condition data via signal input/output
- Adopts an odd number of roughness levels (three stages), defining the median as roughness level 2 and performing control based on each stage
