Electric Vehicle Regenerative Braking Torque Control

The patent applies dynamics by making the regenerative braking force adjustable and time-varying. The control device dynamically modifies the regenerative braking force based on real-time vehicle state (speed, acceleration) to optimize braking performance while minimizing vibration. This is achieved through continuous adjustment rather than fixed braking force, allowing the system to adapt to changing conditions and avoid resonant frequencies that cause vibration.

The patent changes the parameter of regenerative braking force from a fixed set value to a dynamically adjusted value. By modifying the braking force parameter based on vehicle state parameters (speed, longitudinal acceleration), the system achieves smooth deceleration without generating harmful vibrations. The parameter change allows optimization of both braking efficiency and vibration reduction.

The patent implements feedback control by using the detected vehicle state (longitudinal acceleration, speed) to continuously adjust the regenerative braking force. The control device monitors the actual vehicle response and modifies the braking force accordingly, creating a closed-loop control system. This feedback mechanism ensures stable stopping performance while maintaining relatively simple control logic.

The control system performs self-adjustment by automatically modifying the regenerative braking force based on detected vehicle state without requiring complex external intervention. The system uses its own sensors and controllers to detect deviations from desired stopping behavior and corrects them autonomously, achieving stable stopping with simplified control architecture.

The patent employs periodic or pulsed adjustment of regenerative braking force rather than continuous maximum braking. By applying braking force in a controlled, time-varying manner that avoids sustained high-magnitude forces, the system achieves effective deceleration while preventing the generation of harmful vibrations. The periodic action allows energy recovery while maintaining comfort.

The patent applies partial regenerative braking force rather than maximum possible braking force at all times. By using just enough regenerative braking to achieve smooth deceleration without exceeding the threshold that generates vibration, the system optimizes the balance between deceleration performance and vibration reduction. This partial action approach prevents excessive braking force application.