Isao Kezobo

TL;DR: In this paper, the abnormal phase disconnecting means disconnects one or more of abnormal phases determined by the abnormal-state determining means from the circuit, and the abnormal state current controlling means generates an abnormalstate voltage command in accordance with an abnormal state determined by abnormal state determining means, and uses phases other than the disconnected phases of the inverter to perform individual current controls of the phases with the abnormal voltage command used as a multiphase voltage command.

TL;DR: In this article, an electric power steering controller involving a motor for providing a steering system with output torque, a motor driving circuit for driving the motor, a microcontroller for calculating a current to be applied to the motor and a gate driver for driving a plurality of switching devices constituting a bridge circuit, based on the result of the calculation by the microcontroller.

TL;DR: An electric power steering control device includes a vibration extracting filter for performing filter processing on a rotation speed of a motor to reduce a gain on a low frequency side so as to output a vibration component signal.

TL;DR: In this paper, a motor control device for controlling a motor having a plurality of phases is used to detect an open-state fault in a target phase and an electric power steering device using the same.

TL;DR: In this paper, a motor control device is used to determine if an open-circuit failure has occurred at a target x-phase, if the power supply voltage Vb is a predetermined voltage Vthr or more, the motor rotational speed ω was a predetermined speedωthr, and the voltage instruction Vx* of the target X-phase is not near zero, and a state in which the control error is a pre-specified error or more is detected for a predetermined time or more.