| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrically-driven braking device that can perform pressing force feedback control with high resolution of pressing force detection in a region where vehicle deceleration is small and with high reliability in a region where the vehicle deceleration is large.SOLUTION: Based upon a manipulated variable (Bpa) of a braking operation member, a first contribution degree (Ka1) as to a pressing force measured value (Fba) as a detection value of pressing force of a friction member and a second contribution degree (Ke2) as to a pressing force estimation value (Fbe) as an estimate value of the pressing force computed based upon the position of an electric motor are determined. When the manipulated variable is small, the second contribution degree is determined to be larger in value than the first contribution degree and when the manipulated variable is large, the first contribution degree is determined to be larger in value than the second contribution degree. Based upon a value (Fbxa) obtained while the first contribution value is taken into consideration for the pressing force measured value and a value (Fbxe) obtained while the second contribution value is taken into consideration for the pressing force estimate value, compound pressing force (Fbx) is computed and based upon the compound pressing force, a target amount of electric power supply to the electric motor is computed. |
