A method includes receiving, before a first time, a plurality of sensor values and identifying, based on the plurality of sensor values, a target vehicle in a blind zone of a host vehicle. The method also includes determining, at the first time, that the host vehicle is initiating a steering maneuver and identifying a plurality of time segments between the first time and a second time. The method also includes updating the plurality of sensor values and determining a heading angle of the target vehicle relative to the host vehicle. The method also includes estimating a position of the target vehicle at each time segment of the plurality of time segments and estimating, using each position of the target vehicle at each corresponding time segment of the plurality of time segments, a position of the target vehicle at the second time.

A steering device includes a turning shaft, a steering mechanism, a motor, and a control device. The control device includes a steering-range axial force calculating circuit, a limiting axial force calculating circuit, a final axial force calculating circuit, and an axial force adjusting circuit. The steering-range axial force calculating circuit calculates a steering-range axial force when a steering wheel is operated in a predetermined operation range. The limiting axial force calculating circuit calculates a limiting axial force. The final axial force calculating circuit calculates a final axial force. The axial force adjusting circuit adjusts a value of the steering-range axial force, the limiting axial force, or the final axial force based on the axial force that reflects the force acting on the turning shaft.

A steering control device controls, as a target, a steering device including a steering actuator and a turning actuator that has a structure with a power transmission path cut off from the steering actuator. The steering control device includes a control unit. The control unit is configured to execute; turning-side synchronization control when the absolute value of a deviation amount is a value within a first range; steering-side synchronization control when the absolute value of the deviation mount is a value within a second range that is a larger value than a value within the first range; and at least one of the turning-side synchronization control and the steering-side synchronization control when the absolute value of the deviation amount is a value within a third range that is a value between a value within the first range and a value within the second range.

A rear wheel steering motor generates rotational force. A movement converter has a converting portion coupled to the wheel steering motor and configured to convert the rotational force transmitted from the rear wheel steering motor into a linear movement. An MR fluid is applied on the converting portion. An inverter controls driving of the rear wheel steering motor. A magnet switch works in concert with the inverter to change a magnetic field to selectively provide the magnetic field to the MR fluid of the movement converter.

A power supply voltage terminal and a ground terminal having a rectangular cross section are respectively connected to a first terminal hole of a power supply pattern and a second terminal hole of a ground pattern. An inductor is surface-mounted on a substrate, and has a rectangular parallelepiped shape in which an input end connected to a power supply pattern and an output end connected to a power supply relay face each other. A first electrode terminal of a capacitor is connected to the power supply pattern, a second electrode terminal is connected to the ground pattern, and constitutes a filter circuit together with the inductor. A wall surface of an input end of the inductor is arranged parallel to the longitudinal axis direction (x direction) of the first terminal hole. The inductor opposes the first terminal hole so as to include the entire length Wh of the first terminal hole within the width Wt of the input end in the x direction.

A motor driven power steering control method may include setting a virtual friction model to a column connected between a steering wheel and a rack gear; calculating a frictional torque of the column by taking a steering angular speed of the steering wheel as an input parameter in the set virtual friction model; and calculating a target steering torque on the basis of a virtual steering system model using the frictional torque of the column as a parameter.

A motor driven power steering control method may include setting a virtual steering system model including a column connecting a steering wheel to a rack gear, determining a column stiffness torque using torsional displacement of the column in the set virtual steering system model, and determining a target steering torque based on the determined column stiffness torque.

The disclosure relates to a steering control device and method. A steering control device according to the disclosure comprises a receiver receiving a motor torque from a motor torque sensor provided in a host vehicle and a controller enabling a steering gear to be driven in a compliance zone, calculating a friction of the steering gear based on the motor torque received by the driving of the steering gear, determining a state of the steering gear based on the calculated friction, and outputting, to a driver, a notification message for the state of the steering gear.

Technical solutions are described for attenuating dither noise in a steering system. An example method includes computing a torque command based on an input torque, and generating a current command corresponding to the torque command. Further, the method includes determining an adjustment parameter based on a plurality of steering system signals. Further, the method includes reducing dither noise of the steering system by dynamically modifying a controller parameter value using the adjustment parameter. Further, the method includes generating a voltage command using the current command and the modified controller parameter value, the voltage command used to generate torque by a motor.

A motor control system is configured to: determine a current supply limit for an electric motor; receive a current supply of the electric motor; identify one or more motor commands; adjust the one or more motor commands in response to a determination that the current supply is greater than the current supply limit; and selectively control the electric motor using the adjusted one or more motor commands.