Apparatus and method for controlling head lamp
AssigneeLG Innotek Co., Ltd.
InventorHong Gon Lee
Life of this patent
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Abstract
Disclosed is an apparatus for controlling a head lamp. The apparatus comprises: a lamp electronic control unit for generating a lamp steering signal according to a received steering angle and speed information; first and second head lamp control sections for generating motor driving signals corresponding to the lamp steering signal; and first and second step actuators for rotating first and second head lamp modules at predetermined angles by converting a rotational movement of a motor into a linear movement according to the motor driving signals of the first and second head lamp control modules.
Claims18
An apparatus for controlling a head lamp, the apparatus comprising:
- a lamp electronic control unit for generating a lamp steering signal according to a received steering angle and speed information;
- first and second head lamp control sections for generating motor driving signals corresponding to the lamp steering signal;
- and
- first and second step actuators for rotating first and second head lamp modules at predetermined angles by converting a rotational movement of a motor into a linear movement according to the motor driving signals of the first and second head lamp control modules,
- wherein the first and second step actuators comprise:
- a step motor;
- a spiral rotating shaft connected to the step motor;
- and
- a nut that linearly moves in an axial direction as the spiral rotating shaft rotates in a forward or reverse direction.
An apparatus for controlling a head lamp, the apparatus comprising:
- a lamp electronic control unit for generating a lamp steering signal according to a received steering angle and speed information;
- first and second head lamp control modules comprising a head lamp control section for generating motor driving signals corresponding to the lamp steering signal, and a step actuator for converting a rotational movement of a motor into a linear movement according to the motor driving signals of the head lamp control section;
- and
- first and second head lamp modules turning to the left or right according to linear movements of the step actuators of the first and second head lamp control modules,
- wherein the step actuator comprises:
- a step motor;
- a spiral rotating shaft connected to the step motor;
- and
- a nut that linearly moves in an axial direction as the spiral rotating shaft rotates in a forward or reverse direction.
A method for controlling a head lamp, the method comprising the steps of:
- checking an on state of a head lamp;
- checking an engine speed;
- detecting a steering angle;
- generating a lamp steering signal for the steering angle if the head lamp is in an on state and the engine speed is more than a predetermined speed;
- generating first and second motor driving signals according to the lamp steering signal;
- and
- allowing first and second head lamp modules to turn to the left or right at a predetermined angle by converting a rotational movement of a step motor into a linear movement according to the first and second motor driving signals,
- wherein the step motor includes:
- a spiral rotating shaft connected to the step motor;
- and
- a nut that linearly moves in an axial direction as the spiral rotating shaft rotates in a forward or reverse direction.
Dependencies are inferred from the claim text.