| 摘要 |
Provided are an electric brake device and an electric brake device system that can prevent pad wear from progressing beyond its limit and that can estimate the wear of a friction pad without involving increase in cost and space. The electric brake device includes an electric motor (2), a friction pad (6), a linear motion mechanism (4), a braking force command section (26a), a braking force estimation section (30), and a controller (7). The controller (7) is provided with a pad wear amount estimation section (37) to estimate a wear amount of the friction pad and a motor rotation angle detector (28) to detect a motor rotation angle. The pad wear amount estimation section (37) estimates a wear amount of the friction pad (6) from the rotation angle of the electric motor (2), obtained by the motor rotation angle detector (28), which rotation angle corresponds to a distance between a retraction end at which a linear motion portion (14) of the linear motion mechanism (4) is separated from a brake rotor (5) and an advance end at which the linear motion portion (14) approaching the brake rotor (5) generates the braking force. |
