Apparatus for correcting driving power of vehicle actuator and method thereof

• US 20060055242A1
• Filed: 12/16/2004
• Published: 03/16/2006
• Est. Priority Date: 09/15/2004
• Status: Active Grant

• Current Assignee: Hyundai Mobis Co., Ltd.
• Original Assignee: Hyundai Mobis Co., Ltd.
• Inventors: Lee, Byoung-Sang
• Granted Patent: US 7,420,290 B2
• Time in Patent Office: Days
• US Class Current: 307/10.100
• CPC Class Codes: B60G 17/0157 non-fluid unit, e.g. electric motor
• CPC Class Codes: B60G 2400/204 Vehicle speed
• CPC Class Codes: B60G 2400/412 of steering wheel or column
• CPC Class Codes: B60G 2600/182 Active control means
• CPC Class Codes: B60G 2600/73 Electrical control
• CPC Class Codes: B60G 2600/82 duty rate function
• CPC Class Codes: B60G 2800/91 Suspension Control

Abstract

An apparatus to correct the driving power of an actuator in a vehicle includes a comparator that compares a battery voltage of the vehicle with a predetermined reference voltage. A controller adjusts and outputs a duty ratio of a Pulse Width Modulation (PWM) signal according to the compared result of the battery voltage and reference voltage. A switching element is switched on and off by the PWM signal and outputs the battery voltage after a transformation. An actuator operates by receiving the transformed battery voltage through the switching element. The actuator operates at a constant speed regardless of the variation of the battery voltage.

Claims

1. An apparatus to correct the driving power of an actuator in a vehicle, comprising:

a comparator that compares a battery voltage of the vehicle with a predetermined reference voltage;

a controller that adjusts and outputs a duty ratio of a Pulse Width Modulation (PWM) signal according to the compared result of said battery voltage and said reference voltage;

a switching element that is switched on and off by the PWM signal and outputs said battery voltage after a transformation; and

an actuator that operates by receiving said transformed battery voltage through said switching element.

2. The apparatus according to claim 1, wherein said controller increases the duty ratio of the PWM signal if said battery voltage is less than said reference voltage as a result of the compared result.

3. The apparatus according to claim 1, wherein said controller decreases the duty ratio of the PWM signal if said battery voltage is greater than said reference voltage as a result of the compared result.

4. A method to correct the driving power of an actuator in a vehicle, comprising:

comparing a battery voltage of the vehicle with a predetermined reference voltage;

decreasing a duty ratio of a Pulse Width Modulation (PWM) signal if said battery voltage is greater than said reference voltage, and increasing the duty ratio of the PWM signal if said battery voltage is less than said reference voltage; and

transforming and providing said battery voltage to an actuator by a switching operation according to the adjusted PWM signal.