Steering control apparatus

Patent metadata

Field	Value
Publication number	US-11046355-B2
Application number	US-201916550930-A
Country	US
Kind code	B2
Filing date	Aug 26, 2019
Priority date	Aug 27, 2018
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

The present disclosure provides a steering control apparatus including: a steering wheel; a column including a column shaft and a worm wheel reduction gear; a reactive force generator including a worm shaft, a coupling bearing, and a reaction motor; a solenoid including a rod that can be coupled with a second coupling groove of the coupling bearing and a housing connected to the rod; and a controller that checks a state of a vehicle and outputs a turn-off signal performing control such that the rod protrudes to the outside of the housing and is coupled with the second coupling grooves of the coupling bearing or a turn-on signal performing control such that the rod enters the inside of the housing and is decoupled from the second coupling grooves of the coupling bearing based on a result of checking.

First claim

What is claimed is:

1. A steering control apparatus comprising:
a steering wheel;
a column including a column shaft having one end with which the steering wheel is coupled and a worm wheel reduction gear that is coupled with the other end of the column shaft and includes one or more first coupling grooves;
a reactive force generator that includes a worm shaft engaged with the first coupling grooves, a coupling bearing coupled with one end of the worm shaft and including one or more second coupling grooves, and a reaction motor coupled with the other end of the worm shaft and generating a reactive torque for rotation of the steering wheel;
a solenoid including a rod that can be coupled with the second coupling grooves and a housing that is connected to the rod; and
a controller that checks a state of a vehicle and outputs a turn-off signal performing control such that the rod protrudes to the outside of the housing and is coupled with the second coupling grooves or a turn-on signal performing control such that the rod enters the inside of the housing and is decoupled from the second coupling grooves based on a result of checking.

2. The steering control apparatus according to claim 1 , further comprising a steering angle sensor that detects a steering angle of the steering wheel,
wherein the controller sets a limit steering angle, receives steering angle information from the steering angle sensor, outputs the turn-off signal in a case in which the steering angle corresponds to the limit steering angle, and outputs the turn-on signal in a case in which the steering angle does not correspond to the limit steering angle.

3. The steering control apparatus according to claim 1 , further comprising a steering angle sensor that detects a steering angle of the steering wheel and a steering wheel angle sensor that detects a steering wheel angle of wheels,
wherein the controller receives steering angle information from the steering angle sensor and determines a target steering wheel angle according to the steering angle information, receives steering wheel angle information from the steering wheel angle sensor and determines an error between the target steering wheel angle and the steering wheel angle, outputs the turn-off signal in a case in which the error deviates from a predetermined error range set in advance, and outputs the turn-on signal in a case in which the error is included within the error range.

4. The steering control apparatus according to claim 1 ,
wherein the controller receives target speed information of the vehicle and rotation speed information relating to a rotation speed of the wheels from a rotation speed sensor, outputs the turn-off signal in a case in which the rotation speed of the wheels does not correspond to the target speed, and outputs the turn-on signal in a case in which the rotation speed of the wheels corresponds to the target speed.

5. The steering control apparatus according to claim 1 ,
wherein the controller determines whether or not the vehicle is turned on, outputs the turn-on signal in a case in which the vehicle is turned on, and outputs the turn-off signal in a case in which the vehicle is turned off.

6. The steering control apparatus according to claim 1 ,
wherein the column further includes a stopper that is coupled with the other end of the column shaft extending through the worm wheel reduction gear and is arranged in parallel with the worm wheel reduction gear.

7. A steering control apparatus comprising:
a steering wheel;
a column shaft having one end with which the steering wheel is coupled;
a reactive force generator including a coupling bearing that is coupled with the other end of the column shaft and includes one or more coupling grooves and a reaction motor that is coupled with the other end of the column shaft extending through the coupling bearing and generates a reactive torque for rotation of the steering wheel;
a solenoid including a rod that can be coupled with the coupling groove and a housing connected to the rod; and
a controller that checks a state of a vehicle and, based on a result of the checking, outputs a turn-off signal performing control such that the rod protrudes to the outside of the housing and is coupled with the coupling groove of the coupling bearing or a turn-on signal performing control such that the rod enters the inside of the housing and is decoupled from the coupling groove of the coupling bearing.

8. The steering control apparatus according to claim 7 , further comprising a steering angle sensor that detects a steering angle of the steering wheel,
wherein the controller sets a limit steering angle, receives steering angle information from the steering angle sensor, outputs the turn-off signal in a case in which the steering angle corresponds to the limit steering angle, and outputs the turn-on signal in a case in which the steering angle does not correspond to the limit steering angle.

9. The steering control apparatus according to claim 7 , further comprising a steering angle sensor that detects a steering angle of the steering wheel and a steering wheel angle sensor that detects a steering wheel angle of wheels,
wherein the controller receives steering angle information from the steering angle sensor and determines a target steering wheel angle according to the steering angle information, receives steering wheel angle information from the steering wheel angle sensor and determines an error between the target steering wheel angle and the steering wheel angle, outputs the turn-off signal in a case in which the error deviates from a predetermined error range set in advance, and outputs the turn-on signal in a case in which the error is included within the error range.

10. The steering control apparatus according to claim 7 ,
wherein the controller receives target speed information of the vehicle and rotation speed information relating to a rotation speed of the wheels from a rotation speed sensor, outputs the turn-off signal in a case in which the rotation speed of the wheels does not correspond to the target speed, and outputs the turn-on signal in a case in which the rotation speed of the wheels corresponds to the target speed.

11. The steering control apparatus according to claim 7 ,
wherein the controller determines whether or not the vehicle is turn on, outputs the turn-on signal in a case in which the vehicle is turned on, and outputs the turn-off signal in a case in which the vehicle is turned off.

12. A steering control apparatus comprising:
a steering wheel;
a column including a column shaft having one end with which the steering wheel is coupled, a first pulley coupled with the other end of the column shaft, and a belt connected to the first pulley;
a reactive force generator including a second pulley that is connected to the belt, a coupling bearing that is coupled with one end of the second pulley and includes one or more coupling grooves, and a reaction motor that is coupled with the coupling bearing and generates a reactive torque for rotation of the steering wheel;
a solenoid including a rod that can be coupled with the coupling groove and a housing that is connected to the rod; and
a controller that checks a state of a vehicle and outputs a turn-off signal performing control such that the rod protrudes to the outside of the housing and is coupled with the second coupling grooves or a turn-on signal performing control such that the rod enters the inside of the housing and is decoupled from the second coupling grooves based on a result of checking.

Assignees

• Mando Corp

Inventors

• Yeom Seulki
• Park Jung Sik

Classifications

• B62D5/04 Primary

  electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear · CPC title

• B62D5/0469

  End-of-stroke control · CPC title

• B62D5/005 Primary

  means for generating torque on steering wheel or input member, e.g. feedback · CPC title

• B62D15/021

  Determination of steering angle · CPC title

• B62D6/008

  Control of feed-back to the steering input member, e.g. simulating road feel in steer-by-wire applications · CPC title