A steering system for controlling a direction of travel of a work machine includes a steering device controllable by an operator of the work machine. The steering device is coupled to an axle of the work machine for controlling an angular orientation of the wheels. A brake is coupled to the steering device and is controllably applied to apply a first amount of resistance to the steering device. A motor is coupled to the steering device and is controllably activated to apply a second amount of resistance to the steering device. A controller controls the steering system of the work machine in at least a first operating mode and a second operating mode. In the first operating mode, the controller controls the brake between an applied position and an unapplied position, whereas in the second operating mode, the controller controls the motor between an active position and a de-activated position.

A method includes capturing a first sample data signal, the first sample data signal being associated with a first time domain and storing a first value associated with the first sample data signal in a first element position of a first memory buffer. The method also includes generating, in response to a completion of a sampling window and in response to a request from a data consumer, a snapshot of values stored in the first memory buffer and storing the snapshot of values in a data consumer memory. The method also includes extracting, by the data consumer in a second time domain, at least one value from the snapshot of values and calculating, by the data consumer, at least one of a motor position of a motor and a motor velocity of the motor using the at least one value from the snapshot of values.

A method for piloting a motor of a power steering system of a vehicle, the power steering system having at least one steering wheel and one rack, the motor being piloted by a closed-loop proportional-derivative regulator (R.sub.θ) receiving as input an angular position (θm) of the motor and a setpoint angle (θ.sub.c), the regulator (R.sub.θ) determining a setpoint motor torque (C.sub.c). The method

includes the steps of determining a stiffness compensation, and

modifying the angular position (θ.sub.m) of the motor.

The embodiments relate to a steering motor control device and method. An embodiment may provide a steering motor control device for controlling a steering motor including a first winding and a second winding including a receiver for receiving requested output information on an output of the steering motor, a determiner configured to, if one of the first winding and the second winding is determined to fail, determine output distribution information based on the requested output information and predetermined reference output information, and determine normal winding control information and faulty winding control information based on the output distribution information, and a controller for controlling an operation of the normal winding and an operation of the failed winding.

An emergency steering system for a vehicle, may include a planetary gear mounted in an inlet space of a gear box for a steering apparatus so that the planetary gear is ordinarily operated at a gear ratio of 1:1 and has an increased gear ratio in the event of failure of a main steering device; and a gear ratio increasing device mounted to an upper plate portion of the gear box to increase the gear ratio of the planetary gear.

Disclosed are an apparatus and a method for controlling an operation of a reaction force motor. An exemplary embodiment of the present disclosure provides an apparatus for controlling an operation of a reaction force motor, which is included in a system for providing a reaction force by using the reaction force motor and an elastic member which is deformed by a rotation of a steering wheel in a direction of a rotation axis of the steering wheel, the apparatus including: a first motor control unit connected to a first winding part of the reaction force motor; and a second motor control unit connected to a second winding part of the reaction force motor, in which the first and second motor control units control turning-on or turning-off of switches included therein so that the reaction force motor generates braking torque corresponding to reaction force torque provided by the elastic member, a steering angle of the steering wheel, and steering torque of the steering wheel.

The present disclosure relates to a method of generating feedback force in case of a motor fault in a Steering Feedback Actuator (SFA) system. The method includes: determining whether a fault occurs in a motor associated with an SFA system; determining the type of fault when it is determined that the fault occurs in the motor; and generating feedback force associated with the SFA system by controlling the motor based on the determined type of fault.

Disclosed are an apparatus and method for controlling a motor. An exemplary embodiment of the present disclosure provides an apparatus for controlling an operation of a motor, the apparatus including: a first motor control unit connected to a first winding part of the motor and configured to control the operation of the motor; and a second motor control unit connected to a second winding part of the motor and configured to control the operation of the motor, in which the first motor control unit turns on or off current paths formed between the first motor control unit and the motor by controlling switches included in the first motor control unit, and the second motor control unit turns on or off current paths formed between the second motor control unit and the motor by controlling switches included in the second motor control unit.

An electric power steering control device, in which a control response capability in a low speed region can be improved, and a noise and a vibration can be suppressed, is provided. Although a control amount setter of the electric power steering control device performs a PI control computing in accordance with a deviation between a target current and an actual current, the control amount setter includes a gain setter which varies a gain of a proportion term in accordance with the deviation and a vehicle speed, and a control amount is computed in an integration term by using a predetermined constant gain.

A helical gear transmission for an electromechanical power-assisted steering mechanism includes a shaft which meshes with a helical gear. The shaft is disposed in a housing and at the first end of said shaft in a drive-side bearing assembly is mounted to rotate about a rotation axis, and at the second end of said shaft in a drive-distal bearing assembly is mounted in the housing. The drive-side bearing assembly has a fixed bearing, and the fixed bearing is enclosed by two bearing shells. On each end side of the fixed bearing one spring element is disposed between the fixed bearing and the respective bearing shell. The spring elements asymmetrically pre-load the fixed bearing such that a pivot axis about which the shaft is pivotable in the direction of the helical gear is disposed in the region of the toothing plane of the shaft and the helical gear.