A turning control device includes a terminal position learning unit configured to learn a terminal position of the turning mechanism, based on a steered position of the turning mechanism detected by a position detection unit, a command value correction unit configured to, when a steered position detected by the position detecting unit is in a vicinity of a learned terminal position, correct a current command value for an actuator providing a turning mechanism with steering assist force, and a correction amount limiting unit configured to limit a correction amount of the current command value by the command value correction unit, based on a comparison result between the learned terminal position and a predetermined position and a comparison result between stroke length of the turning mechanism calculated from the learned terminal positions and a predetermined length.

A linear actuator for a steer-by-wire system including a component, in particular an axle or a shaft, that can be moved along a linear trajectory, and including a measuring device for determining a position of the component. The measuring device has a coil for inductively determining the position of the component, and the coil is arranged coaxially relative to the linear trajectory of the component.

A control device for a vehicle includes a plurality of control circuits configured to control a control object in cooperation or in combination by starting with powering-on of a vehicle as a trigger. Each of the plurality of control circuits is configured to perform a synchronization process and power latch control. Each of the plurality of control circuits is configured to maintain the operation mode immediately before the vehicle has been powered off in a period in which the power latch control is being performed. Each of the plurality of control circuits is configured not to perform the synchronization process in a predetermined period when the vehicle has been powered on.

An electric drive device of the present invention has: a connector assembly 13 having external terminal forming portion 13B, 13S; a metal cover 12 accommodating connector assembly 13 with external terminal forming portion 13B, 13S exposed; an annular seal portion 23 having an annular seal groove 31 in which metal cover 12 and connector assembly 13 are sealed; and a plurality of fixing bolts 21 fixing connector assembly 13 to a housing 11. Annular seal groove 31 is formed in region that connects two fixing bolts 21 in a straight line. Since annular seal groove 31 is formed in the straight region connecting the two fixing bolts 21, warp of region where annular seal portion 23 is formed is corrected by the fixing bolts 21, thereby securing good sealing performance between annular seal portion 23 of connector assembly 13 and an annular protruding edge portion 28P of metal cover 12.

The present embodiments relate to a worm wheel of a steering system speed reducer, and provide a worm wheel of a steering system speed reducer, and a manufacturing method therefor, the worm wheel comprising: an external toothed part having a ring shape, external gear teeth provided on the outer peripheral side thereof, insertion grooves provided on the inner peripheral side thereof, and coupling holes provided on the upper surface and/or the lower surface thereof; an internal toothed part, which has a ring shape, is inserted into the external toothed part, has insertion protrusions provided on the outer peripheral side thereof, and has coupling protrusions provided at locations corresponding to the coupling holes; a hub to which a steering shaft is coupled; and a boss part provided between the outer peripheral side of the hub and the inner peripheral side of the external toothed part.

A method for torque control for an electromechanically assisted steering system of a motor vehicle is described. The method comprises the following steps: providing a modified controlled system, wherein the modified controlled system imitates desired mechanical properties of a controlled system; detecting at least one measured variable of the controlled system by a sensor; ascertaining an inertia compensation torque and/or a damping torque and/or a friction compensation torque by a modification controller based on the at least one measured variable; generating a torque demand of a steering feel controller for the electric motor by the at least one steering feel controller based on the at least one measured variable; and superimposing a torque demand of the steering feel controller with the inertia compensation torque and/or the damping torque and/or the friction compensation torque, by which a modified torque demand is obtained for the electric motor. Furthermore, a control unit, an electromechanically assisted steering system, and a computer program for carrying out the method are described.

The disclosure relates to a motor control device and method and comprises a calculator calculating friction control information for controlling friction of a steering device based on vehicle state information including information regarding a state of a vehicle and preset system friction information and a controller performing either friction decrease control to control to reduce the friction of the steering device or friction increase control to control to increase the friction of the steering device, based on the friction control information.

An electronic steering apparatus of a vehicle may include a reaction torque generator configured to generate command reaction torque based on a steering condition, and a reaction torque controller configured to receive a rack force and vehicle speed, to tune road sensitivity according to the vehicle speed, to set road sensitive torque by applying a gain according to a reaction sensitivity, to reflect the road sensitive torque into the command reaction torque to generate a final reaction torque, and to output the final reaction torque to a driving motor.

A driving assistance control device outputs a driving assistance command value to a steering control device as information indicating a target course that is generated on the basis of the detection result of a vehicle-mounted sensor. The driving assistance command value is output as a torque component or an angle component depending on the design of the driving assistance control device. In response, processing in which a driving assistance command value input from the exterior of the steering control device is used as input for angle control processing or input for torque control processing within an assist command value calculation unit is performed by a microcomputer as assistance command value input processing by an assistance command value input processing unit.

The present embodiments relates to a steering control device and method of a vehicle and may provide a steering control device and method for a vehicle, which may secure stably steered driving by controlling the output of the steering motor by changing the average steering ratio when the driver causes urgent steering in a failure situation and adjusting the rack stroke and rack speed.