A device for determining a temperature of a semiconductor power switch with a built-in temperature-dependent gate resistor may include a non-inverting amplifier circuit comprising an operational amplifier and a feedback resistor. Inverting input of the operational amplifier may be connected to the semiconductor power switch such that a gain of the non-inverting amplifier circuit in a predefined frequency range of an input signal depends on the built-in temperature-dependent gate resistor and the feedback resistor and is a measure of the temperature of the semiconductor power switch. The feedback resistor may be disposed between a negative input and an output of the operational amplifier.

The present disclosure provides a road impact simulating apparatus of a steer-by-wire system, the apparatus comprising: a Signal processor for determining a wheel speed difference value between wheels, and determining a lateral acceleration difference value between an estimated lateral acceleration and a sensed lateral acceleration of a vehicle; an Impact determinator for determining whether there is a road impact based on the wheel speed difference value; and a Torque calculator for determining a reaction force torque according to the road impact based on the lateral acceleration difference value if it is determined as the road impact.

An embodiment relates to a rotor comprising: a main body; an upper terminal disposed on an upper surface of the main body; and a lower terminal disposed on a lower surface of the main body, wherein the upper terminal comprises a first upper terminal and a second upper terminal; the lower terminal comprises a first lower terminal; the main body comprises a first hole and a second hole that penetrate the main body, wherein one end of the first lower terminal is connected to the first upper terminal through the first hole and the other end is connected to the second upper terminal through the second hole by means of a bus bar, and to a motor comprising the same. As such, it is possible to enhance space utilization inside the motor.

A closed-loop circuit is detected based on a short-circuit failure of a motor control switching element of a motor drive circuit and a cutoff switching element. A motor control device including a motor, a motor drive circuit (10a) that is connected to a power supply device and the motor and controls the output of the motor, and a processing unit for detecting a closed-loop circuit formed by the motor and the motor drive circuit (10a) based on a short-circuit failure of switching elements arranged in the motor drive circuit (10a).

A closed-loop circuit is detected based on a short-circuit failure of a motor control switching element of a motor drive circuit and a cutoff switching element. A motor control device including a motor, a motor drive circuit (10a) that is connected to a power supply device and the motor and controls the output of the motor, and a processing unit for detecting a closed-loop circuit formed by the motor and the motor drive circuit (10a) based on a short-circuit failure of switching elements arranged in the motor drive circuit (10a).

A steering system includes a prioritized torque sensor, a redundant torque sensor, a controller, a first signal line, a second signal line, and a common signal line. Each of the first signal line and the second signal line connects the prioritized torque sensor and the controller. The common signal line connects the redundant torque sensor and the controller. The prioritized torque sensor is configured to transmit, via the first signal line, a first prioritized detection signal. The prioritized torque sensor is configured to transmit, via the second signal line, a second prioritized detection signal. The redundant torque sensor is configured to transmit, via the common signal line, a first redundant detection signal and a second redundant detection signal.

A motor control device includes a third harmonic calculation unit (60) configured to calculate a first third harmonic on a basis of an average value between a voltage command value of a maximum phase with a maximum duty ratio and a voltage command value of a minimum phase with a minimum duty ratio among three-phase voltage command values; an amplitude calculation unit (61) configured to calculate an amplitude of the three-phase voltage command values; a third harmonic conversion unit (62, 62′, 63, 65-67) configured to convert the first third harmonic into a second third harmonic on a basis of the first third harmonic and the amplitude; a correction unit (64) configured to correct the three-phase voltage command values by subtracting the second third harmonic from the three-phase voltage command values.

Provided is a feature which allows an electric power steering device to improve the steering feel. The electric power steering device includes: a basic control amount calculating section configured to calculate a basic control amount corresponding to steering by a driver; a frictional force calculating section configured to calculate, by using a friction model, a frictional force corresponding to a wheel angle-related value, which is a value relating to a wheel angle of a steering device, and calculate a friction-originated control amount, which originates from the calculated frictional force; and a control amount calculating section configured to calculate a steering control amount in accordance with the basic control amount and the friction-originated control amount.

Method for determining a friction to be adjusted in a power steering system or for modifying a hysteresis of a steering wheel torque applied to a steering wheel of the power steering system, the method including the following steps of: determining a speed, from a measurement of a speed of a part of the power steering system and/or a measurement of the steering wheel torque; determining the friction to be adjusted on the basis of a modified LuGre model, said modified LuGre model determining the friction to be adjusted as a function of a state of the system, a time derivative of the state being determined as a function of said state of the system, the speed, a first gain, and a coulomb friction, according to an equation of the form:

[00001]$\begin{array}{cc}\stackrel{.}{z}=v\left(1-\alpha \left(z,v\right)\frac{{\sigma }_{0}z}{F_c}\mathrm{sign}\left(v\right)\right)& \left[\mathrm{Math}1\right]\end{array}$

The present disclosure relates to a steering control system, a steering control device, and a steering control method. More specifically, a steering control system according to the present disclosure comprises: an actuator driven at a target driving speed and with a target output current on the basis of an input control signal; a rack bar axially moving by the drive of the actuator; a location sensor for detecting the location of a rack included in the rack bar; and a steering control device for calculating a target rack stroke of the rack on the basis of at least one of a driving speed of a vehicle, a steering angle of a steering wheel and a rotation speed of the steering wheel, and generating a control signal such that the rack moves by the target rack stroke to control the drive of the actuator.