The disclosure relates to a steering control device and method. According to the disclosure, a steering control device comprises a detachable dial including a permanent magnet, a hall sensor detecting a position of a magnet provided in the dial, and a controller receiving manager authentication information, calculating a rotation angle of the dial based on a position of the permanent magnet received from the hall sensor when the manager authentication information is valid, and transmitting a control signal to a road wheel actuator (RWA) to move a tire to a position corresponding to the rotation angle.

A vehicle steering apparatus. The durability of a sensor rotor to heat and abrasion is improved. The flatness of the sensor rotor is prevented from being lowered during calking for coupling of the sensor rotor to a steering shaft so that steering torque of a driver can be more accurately detected. A fabrication process is simplified, and fabrication costs are reduced.

A steer-by-wire type steering device includes: a steering support part fixed to a vehicle body; a steering shaft rotatably supported by the steering support part; a steering wheel fixed part fixed to the steering support part; and a steering wheel rotation part connected to the steering shaft and rotatably disposed on an outer circumference of the steering wheel fixed part, wherein the steering wheel rotation part is formed in rotational symmetry with respect to a rotation axis thereof.

A method for estimating torsion bar torque includes receiving, from a first sensor, a handwheel position value indicating a position of a handwheel of a steering system and receiving, from a second sensor, a motor position value indicating a position of a motor of the steering system. The method also includes estimating a torsion bar torque value using the handwheel position value and the motor position value

A steering angle calculation circuit of an ECU includes a neutral point calculation circuit, a correction amount calculation circuit, an adder, and an absolute angle calculation circuit. When started, the neutral point calculation circuit calculates a motor neutral point from a steering angle detected through a steering sensor and a motor rotation angle detected through a relative angle sensor. The correction amount calculation circuit calculates a correction angle that is a difference between a conversion value and an actual value of the motor rotation angle with respect to the steering angle. The conversion value is obtained by converting the steering angle in terms of the motor rotation angle by taking into account a theoretical specific stroke. The adder calculates a final motor neutral point by adding the correction angle calculated by the correction amount calculation circuit to the motor neutral point calculated by the neutral point calculation circuit.

A system and method for passively and actively monitoring and determining the location of at least one mechanical anomaly for a power steering system of a vehicle is disclosed. The system includes one or more processors and a memory coupled to the processors. The memory stores a baseline waveform and data comprising program code that, when executed by the one or more processors, causes the system to receive at least one excitation signal and at least one response signal. The power steering system creates the response signal in response to receiving the excitation signal. In response to receiving the excitation signal and the response signal, the system is caused to estimate the frequency response between the excitation signal and the response signal based on a fast Fourier transform (FFT) algorithm. The frequency response is represented by an estimated waveform.

A vehicle includes a first steered axle and a second steered axle behind the first steered axle. The second steered axle is steerable independently from the first steered axle. The vehicle includes wheels on the second steered axle. An electric steering motor is connected to the at least one of the wheels.

A vehicle steering apparatus that obtains the appropriate steering torque to the steering angle without being affected by road surface state and changes of mechanical characteristics of the steering system due to aging. The steering apparatus includes a target steering torque generating section to generate a target steering torque, a converting section to convert the target steering torque into a target torsional angle, and a torsional angle control section to calculate a motor current command value so as to follow-up a torsional angle to the target torsional angle. The target steering torque generating section includes an offset correcting section to obtain the first torque signal from a characteristic depending on the set steering angle based on an offset value of the steering torque and outputs the first torque signal as a target steering torque. The steering apparatus drives and controls the motor based on the motor current command value.

A vehicle steering apparatus that obtains the appropriate steering torque to the steering angle without being affected by road surface state and changes of mechanical characteristics of the steering system due to aging. The steering apparatus includes a target steering torque generating section to generate a target steering torque, a converting section to convert the target steering torque into a target torsional angle, and a torsional angle control section to calculate a motor current command value so as to follow-up a torsional angle to the target torsional angle. The target steering torque generating section includes an offset correcting section to obtain the first torque signal from a characteristic depending on the set steering angle based on an offset value of the steering torque and outputs the first torque signal as a target steering torque. The steering apparatus drives and controls the motor based on the motor current command value.

A power steering system for a motor vehicle, including a steering column integrating an upper shaft and an intermediate shaft connected in rotation and relatively movable in translation, an upper tube and a lower tube connected in rotation and relatively movable in translation, the upper shaft being movable in rotation and connected in translation in the upper tube, and an assist module integrating an output shaft connected in rotation to the intermediate shaft via a torsion bar, a reducer including a worm screw driven by an assist motor and which meshes on a tangent wheel connected to the output shaft; and an angle measuring device including an inductive sensor, a lower target mounted secured to the output shaft and an upper target secured to an upper lateral face of a core made of a plastic material of the tangent wheel.