Apparatus and method for controlling head lamp
First Claim
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1. 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.
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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.
9 Citations
18 Claims
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1. An apparatus for controlling a head lamp, the apparatus comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for controlling a head lamp, the apparatus comprising:
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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. - View Dependent Claims (12, 13, 14, 15)
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16. A method for controlling a head lamp, the method comprising the steps of:
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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. - View Dependent Claims (17, 18)
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Specification