To optimize energy recovery and vehicle controllability.
A control strategy is provided using feedback control algorithms for monitoring and dynamically modifying the front and rear braking torque for maintaining controllability in a vehicle that initially favors regenerative braking. Simple proportional-integral-derivative feedback controllers can be used. The controller 46 can independently monitor the wheel speed, lateral acceleration, yaw rate, and brake position, to selectively activate non-regenerative braking for each individual wheel 42, 64 and regenerative braking in varying proportion, based on at least one actual vehicle controllability value and at least one predetermined target value for controllability. Controllability factors can include predetermined longitudinal slip ratio, comparison of tire slip angle or the yaw rate. For rear-wheel drive configurations, the non-regenerative brakes can be applied to only one front axle 68 wheel on the outside of a turn, and for front-wheel drive configurations, non-regenerative brakes can be applied to only one rear axle wheel on the inside of the turn.
| JP2003033093 | CONTROLLER FOR GENERATOR |
| JP2003164002 | REGENERATIVE BRAKING APPARATUS FOR ELECTRIC CAR |
| WO/2020/027353 | ELECTRIC UTILIZATION DEVICE OF DRIVING FORCE OF CAR |
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori