19008293. VEHICLE BRAKING DEVICE (DENSO CORPORATION)
VEHICLE BRAKING DEVICE
Organization Name
Inventor(s)
YUSUKE Shibata of Kariya-city JP
VEHICLE BRAKING DEVICE
This abstract first appeared for US patent application 19008293 titled 'VEHICLE BRAKING DEVICE
Original Abstract Submitted
A vehicle braking device with electric brakes includes a braking force controller. This controller adjusts braking forces based on an external command. The electric brakes show hysteresis characteristics: braking force rises with increasing current along a positive efficiency line and holds steady when current drops from a turning value to a holding threshold. Further current decrease leads to a reduction in braking force along an inverse efficiency line. The actual braking force has an increasing period when it follows the positive efficiency line and a holding period when it stays constant as current decreases to the holding threshold. If the vehicle does not meet an exclusion requirement and the required braking force is rising, the controller switches from the increasing period to the holding period when the actual braking force matches the target braking force. It switches back to the increasing period when the difference between the actual and target braking forces reaches a predetermined threshold.