An apparatus and method of controlling a motor driven steering system may selectively perform a motor current control of the motor driven steering system for reducing motor noise according to a present motor-applied current applied to a steering motor of the motor driven steering system when it is determined from vehicle speed information or wheel speed information detected by a first sensor that a vehicle is currently in a stopped state and it is determined from steering angle information detected by a second sensor that a steering wheel is currently in a steering wheel holding state.

A power connector is provided that is configured to conduct a current. The power connector includes a base structure, an extension structure, and a connector head structure that define a current path for the current. The base structure is coupled to an output node of a primary conductor and receives the current from the primary conductor. The connector head structure is configured to output the current from the power connector to the load. The extension structure is coupled to and extends between the base structure and the connector head structure. The extension structure includes a current constriction region configured to increase a magnetic flux density of a magnetic field produced by the current flowing through the current constriction region at a position of a magnetic current sensor that generates a sensor signal based on the magnetic field magnetic field produced by the current flowing through the current constriction region.

A control unit executes first current control for controlling a d-axis current component and a q-axis current component of a current to be supplied to a motor, second current control for controlling the d-axis current component and the q-axis current component based on a heating value target value related to a heating value generated in the motor and setting a ratio of the d-axis current component to the q-axis current component to be different from the ratio in the first current control, and vibration suppression control to be executed when the second current control is executed, and adds a first periodic signal to the torque target value in the vibration suppression control. A phase of the first periodic signal is shifted from a phase in a waveform of an output torque of the motor output when the second current control is executed without executing the vibration suppression control.

A control unit executes first current control for controlling a d-axis current component and a q-axis current component of a current to be supplied to a motor, second current control for controlling the d-axis current component and the q-axis current component based on a heating value target value related to a heating value generated in the motor and setting a ratio of the d-axis current component to the q-axis current component to be different from the ratio in the first current control, and vibration suppression control to be executed when the second current control is executed, and adds a first periodic signal to the torque target value in the vibration suppression control. A phase of the first periodic signal is shifted from a phase in a waveform of an output torque of the motor output when the second current control is executed without executing the vibration suppression control.

A bearing for a rotating electric machine. The bearing includes a plastic body and at least one electrical conductor fixed to the plastic body in a non-detachable manner.

A bearing for a rotating electric machine. The bearing includes a plastic body and at least one electrical conductor fixed to the plastic body in a non-detachable manner.

A drive device drives a motor serving as a load. A first upstream switch is disposed upstream from the motor and a first downstream switch is disposed downstream from the motor in a first current path of current flowing via the motor. A second upstream switch is disposed upstream from the motor and a second downstream switch is disposed downstream from the motor in a second current path of current flowing via the motor. A direction of the current flowing in the motor when current flows in the first current path is different from a direction of the current flowing in the motor when current flows in the second current path. The first upstream drive circuit stops flow of current via the first upstream switch when the current flowing through the first upstream switch becomes greater than or equal to a current threshold.

A drive device drives a motor serving as a load. A first upstream switch is disposed upstream from the motor and a first downstream switch is disposed downstream from the motor in a first current path of current flowing via the motor. A second upstream switch is disposed upstream from the motor and a second downstream switch is disposed downstream from the motor in a second current path of current flowing via the motor. A direction of the current flowing in the motor when current flows in the first current path is different from a direction of the current flowing in the motor when current flows in the second current path. The first upstream drive circuit stops flow of current via the first upstream switch when the current flowing through the first upstream switch becomes greater than or equal to a current threshold.

The present disclosure in some embodiments provides an electro-mechanical brake comprising a piston configured to push a brake pad towards a wheel disc by driving a motor, the electro-mechanical brake comprising: a position detection unit detecting a position of the piston; a current detection unit detecting a value of current flowing through the motor; a motor controller controlling a motor to move the piston toward the wheel disc for a preset time when a vehicle is stopped; and a contact point calculation unit calculating a contact point that is a position of the piston when the brake pad starts to contact with the wheel disc, based on a first position that is a position of the piston when a first current value is detected, using the current detection unit.

The present disclosure in some embodiments provides an electro-mechanical brake comprising a piston configured to push a brake pad towards a wheel disc by driving a motor, the electro-mechanical brake comprising: a position detection unit detecting a position of the piston; a current detection unit detecting a value of current flowing through the motor; a motor controller controlling a motor to move the piston toward the wheel disc for a preset time when a vehicle is stopped; and a contact point calculation unit calculating a contact point that is a position of the piston when the brake pad starts to contact with the wheel disc, based on a first position that is a position of the piston when a first current value is detected, using the current detection unit.