A magnet structure is a magnet structure for a TMR element which is an MR element. The magnet structure includes a bonded magnet compact that has a first main surface facing the TMR element, and a second main surface on a side opposite to the first main surface; and a tubular member that supports the bonded magnet compact. The bonded magnet compact has a gate portion which is provided on the second main surface and includes a gate mark formed by performing injection molding. The gate portion is provided at a position overlapping a center on the second main surface when seen from the second main surface side.

The disclosure relates to a vehicle steering control device and method. There may be provided a vehicle steering control device and method that may detect a slip state of the steering wheel according to the driving state when misalignment occurs between the steering angle of the steering wheel and the rotation angle of the steering motor and performs control to release the slip state, thereby securing driving safety.

The disclosure relates to a steering device for steering a vehicle, having a housing and having a rack. The rack is movable in the longitudinal direction of the rack and in relation to the housing. The rack has a detection installation for detecting an ingress of water. In order to be able to detect an ingress of water at an early stage, in a reliable manner and/or by an ideally cost-effective detection installation. The steering device includes that the detection installation has at least one friction installation which reacts to an ingress of water. The friction installation, upon reacting to the ingress of water and in the event of a movement of the rack, causing an increase in friction.

A method of controlling operation of an electric machine includes: determining a voltage-based torque limit based on a voltage constraint of a direct current (DC) bus supplying power to an inverter for powering the electric machine; determining a motor current-based torque limit based on a motor current limit; determining a final torque limit based on the voltage-based torque limit and the motor current-based torque limit; determining a limited command torque based on a torque command and the final torque limit; determining an initial current command corresponding to the inverter satisfying a regenerative current limit of the DC bus; and calculating a final current command based on, at least, the limited command torque and the initial current command. The method includes the final current command exceeding the initial current command to cause the electric machine to produce a torque corresponding to the limited torque command.

A steer-by-wire steering system includes: a steering device including a steering motor powered by a main power source and/or a backup power source; and a controller configured to control the steering device based on a steering request. When the backup power source is normal, the controller executes an abnormal-situation control based on electric power supplied to the steering motor by the main power source and/or the backup power source when the controller determines that the voltage of the main power source is less than a first threshold. When the backup power source is abnormal, the controller executes the abnormal-situation control based on electric power supplied to the steering motor by the main power source when the controller determines that the voltage of the main power source is less than a second threshold that is greater than the first threshold.

To prevent a driver from feeling uncomfortable when the driver touches a steering member in a state where a driving source is stopped, a vehicle steering system (1) is provided in a vehicle (2) that travels by a driving force generated by a driving source (51). The vehicle steering system (1) includes; a steering member (10) configured to accept a steering operation; and a reaction force actuator (13) configured to apply a reaction force to the steering member (10) in response to the steering operation. In a state where the driving source (51) is stopped, the reaction force actuator (13) is configured to apply the reaction force to the steering member (10) based on a stopped time position that is a position of the steering member (10) at a time when the driving source (51) is stopped.

The present invention provides a rotation angle detection device that detects a steering state quantity of steer-by-wire. The rotation angle detection device includes a drive gear that rotates along with the rotation of a rotating shaft part, first through third driven gears that rotate in conjunction with the drive gear and have different numbers of teeth that are indivisible by each other, sensors that detect the amounts of rotation and are provided for the respective first through third driving gears, a rotation amount generating unit that generates the amount of rotation of the drive gear by combining the amounts of rotation of different driven gears, and power supply circuits each of which is provided for a combination of sensors that detect the amounts of rotation of different driven gears. This configuration makes it possible to improve robustness against failure of sensor elements and power supply circuits.

A vehicle includes a battery, a motor supplied with an input voltage, an inverter configured to boost the input voltage supplied to the motor to output to the battery, a voltage measuring device configured to measure the input voltage, a switching device connected to a neutral point of the motor, and a controller that determines whether fusion of the switching device occurs, repeats on/off of the switching device based on the determination result, measures a first voltage applied to the voltage measuring device, measures a second voltage applied to the voltage measuring device after discharging the voltage measuring device, compares the first voltage with the second voltage, and charges the battery when the fusion of the switching device is released based on the comparison result.

The present disclosure relates to an apparatus and a method for controlling a vehicle, and more particularly to a vehicle control apparatus having a redundant architecture. A vehicle control apparatus according to one embodiment of the present disclosure includes: a receiver, configured to receive sensing information from a vehicle sensor; a first electronic controller, configured to generate a first vehicle control command based on the received sensing information; a monitor, configured to monitor whether the first electronic controller is out of order; and a second electronic controller, configured to generate a second vehicle control command based on the received sensing information if the first electronic controller is out of order.

A yaw stability control system is provided for a motor vehicle. The system includes one or more cameras, a plurality of wheel speed sensors, a yaw angle sensor, and a steering angle sensor. The system further includes an electric motor connected to a reaction wheel. The system further includes a processor and a memory including instructions such that the processor is programmed to: determine a desired yaw angle of the motor vehicle based on a video signal, speed signals, a yaw signal, and a steering signal. The processor is further programmed to generate an actuation signal associated with the desired yaw angle. The electric motor angularly rotates the reaction wheel at a predetermined angular rate in a predetermined rotational direction to produce a counter-acting torque that rotates the motor vehicle to the desired yaw angle, in response to the electric motor receiving the actuation signal from the processor.