Steering control apparatus, steering control method, and steering apparatus

1. A steering control apparatus comprising:

a receiver for receiving steering correction condition information;

a steering correction determiner for determining whether to perform steering correction based on the steering correction condition information;

an angle correction value determiner for, if it is determined to perform the steering correction, determining a correction parameter of the steering correction condition information, and for calculating an angle correction value using the correction parameter of the steering correction condition information; and

a signal generator for, according to the comparison result of the angle correction values and a reference values, determining whether to generate a motor control signal based on the angle correction values to generate the motor control signal,

wherein the angle correction value determiner determines a weight of the correction parameter of the steering correction condition information according to the steering correction condition information, and calculates the angle correction value using the correction parameter of the steering correction condition information and the determined weight, and

wherein the angle correction value determiner decreases the weight of the correction parameter for a vehicle speed if the vehicle speed included in the steering correction condition information is equal to or greater than a first threshold and less than a third threshold, and maintains the weight of the correction parameter for the vehicle speed as a constant value if the vehicle speed is equal to or greater than the third threshold.

2. The steering control apparatus of claim 1 , further comprising a signal transmitter for transmitting the generated motor control signal to a steering motor unit,

wherein the steering motor unit includes at least two motors, and gear ratios of a worm and a worm wheel connected to each of the at least two motors are different.

3. The steering control apparatus of claim 2 , wherein the signal transmitter transmits the motor control signal to only one of the at least two motors.

4. The steering control apparatus of claim 2 , wherein the signal transmitter transmits the motor control signal to a motor having the smallest gear ratio among the at least two motors.

5. The steering control apparatus of claim 1 , wherein the steering correction condition information includes at least one of steering angle information, steering angular velocity information, steering angular acceleration information, steering torque information, direction indicator information, blind spot detection (BSD) function operation information, or vehicle speed information.

6. The steering control apparatus of claim 5 , wherein the steering correction determiner determines to perform the steering correction if the direction indicator is not turned on, and determines to not perform the steering correction if the direction indicator is turned on.

7. The steering control apparatus of claim 5 , wherein the steering correction determiner determines to perform the steering correction if the BSD function is in a on state, and determines to not perform the steering correction if the BSD function is in a off state.

8. The steering control apparatus of claim 5 , wherein the steering correction determiner determines to perform the steering correction if a vehicle speed is equal to or greater than a first threshold, and determines to not perform the steering correction if the vehicle speed is less than the first threshold.

9. The steering control apparatus of claim 8 , wherein the steering correction determiner provides a warning notification regarding a lateral pull of a vehicle.

10. The steering control apparatus of claim 1 , wherein the angle correction value determiner maintains the weight of the correction parameter for a steering angular velocity as a constant value if the steering angular velocity included in the steering correction condition information is less than a fourth threshold, and decreases the weight of the correction parameter for the steering angular velocity if the steering angular velocity is equal to or greater than the fourth threshold.

11. The steering control apparatus of claim 1 , wherein the angle correction value calculator maintains the weight of the correction parameter for a steering torque at a constant value if the steering torque included in the steering correction condition information is less than a fifth threshold, and decreases the weight of correction parameter for the steering torque if the steering torque included in the steering correction condition information is equal to or greater than the fifth threshold.

12. The steering control apparatus of claim 1 , wherein the receiver receives a LDWS angle correction value from a lane departure warning system (LDWS) module, and

wherein the signal generator generates the motor control signal based on the angle correction values if the angle correction values are equal to or less than the LDWS angle correction values.

13. A steering control method comprising:

receiving steering correction condition information;

determining whether to perform steering correction based on the steering correction condition information;

determining, if it is determined to perform the steering correction, a correction parameter of the steering correction condition information, and calculating an angle correction value using the correction parameter of the steering correction condition information; and

generating, according to the comparison result of the angle correction values and a reference values, a motor control signal by determining whether to generate the motor control signal based on the angle correction values,

wherein the calculating of the angle correction value comprises determining a weight of the correction parameter of the steering correction condition information according to the steering correction condition information, and calculating the angle correction value using the correction parameter of the steering correction condition information and the determined weight, and

wherein the determining of the weight of the correction parameter comprises decreasing the weight of the correction parameter for a vehicle speed if the vehicle speed included in the steering correction condition information is equal to or greater than a first threshold and less than a third threshold, and maintaining the weight of the correction parameter for the vehicle speed as a constant value if the vehicle speed is equal to or greater than the third threshold.

14. The steering control method of claim 13 , wherein the steering correction condition information includes at least one of steering angle information, steering angular velocity information, steering angular acceleration information, steering torque information, direction indicator information, blind spot detection (BSD) function operation information, or vehicle speed information.

15. The steering control method of claim 13 , further comprising transmitting the generated motor control signal to a steering motor unit,

wherein the steering motor unit includes at least two motors, and gear ratios of a worm and a worm wheel connected to each of the at least two motors are different, and

wherein the motor control signal is transmitted to a motor having the smallest gear ratio among the at least two motors.

16. A steering apparatus comprising:

a steering motor including at least two motors configuring to have different gear ratios of a worm and a worm wheel; and

an electronic control unit for controlling the steering motor;

wherein the electronic control unit configuring to,

receive steering correction condition information,

determine whether to perform steering correction based on the steering correction condition information,

determine, if it is determined to perform the steering correction, a correction parameter of the steering correction condition information, and calculate an angle correction value using the correction parameter of the steering correction condition information, and

generate, according to the comparison result of the angle correction values and a reference values, a motor control signal by determining whether to generate the motor control signal based on the angle correction value,

wherein the motor control signal is transmitted to a motor having the smallest gear ratio among the at least two motors,

wherein the electronic control unit is configured to determine a weight of the correction parameter of the steering correction condition information according to the steering correction condition information, and calculates the angle correction value using the correction parameter of the steering correction condition information and the determined weight, and

wherein the electronic control unit is configured to decrease the weight of the correction parameter for a vehicle speed if the vehicle speed included in the steering correction condition information is equal to or greater than a first threshold and less than a third threshold, and maintain the weight of the correction parameter for the vehicle speed as a constant value if the vehicle speed is equal to or greater than the third threshold.