Patent ID: 11926296
Assignee: HITACHI ASTEMO, LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 0:
1. An electric brake comprising:
a brake mechanism configured to transmit a thrust generated by driving an electric motor to a piston that moves brake pads pressed against a disc;
a thrust detecting portion configured to detect the thrust applied to the piston;
a rotational position detecting portion configured to detect a rotational position of the electric motor; and
a control device configured to control the driving of the electric motor on the basis of a braking command,
the control device being configured to detect an abnormality in the brake mechanism from a detected value of the thrust detecting portion and a detected value of the rotational position detecting portion in response to the braking command which are obtained when the electric motor is driven,
wherein, in response to the braking command, the control device drives the electric motor in an applying direction where the brake pads approach the disc, and stops the driving of the electric motor when the thrust is not increased within a predetermined range from a position where the thrust starts increasing in a previous time.