KR101162496B1 - Device for driving actuator - Google Patents

Device for driving actuator Download PDF

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Publication number
KR101162496B1
KR101162496B1 KR1020060000131A KR20060000131A KR101162496B1 KR 101162496 B1 KR101162496 B1 KR 101162496B1 KR 1020060000131 A KR1020060000131 A KR 1020060000131A KR 20060000131 A KR20060000131 A KR 20060000131A KR 101162496 B1 KR101162496 B1 KR 101162496B1
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South Korea
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motor
ground terminal
switching element
voltage
microcomputer
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KR1020060000131A
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Korean (ko)
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KR20070072701A (en
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이형욱
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주식회사 만도
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electronic Switches (AREA)

Abstract

본 발명은 액츄에이터 구동장치에 관한 것으로, 특히 본 발명은 마이컴 신호접지단의 전압레레벨에 따라 작동하여 모터에 인가되는 배터리전원을 자동으로 차단시킬 수 있는 스위칭소자를 마련하고, 마이컴 신호접지단의 단선에 의해 신호접지단의 전압레벨이 미리 설정된 수준이상으로 상승하면, 상승된 전압에 의해 스위칭소자가 작동하여 모터에 인가되는 배터리전원을 차단시킬 수 있어 모터와 전자제어장치의 오동작 및 소손을 방지한다.The present invention relates to an actuator driving apparatus, and in particular, the present invention provides a switching device capable of automatically cutting off battery power applied to a motor by operating according to the voltage level of the microcomputer signal grounding terminal, If the voltage level of the signal ground terminal rises above the preset level due to disconnection, the switching element operates by the increased voltage to cut off the battery power applied to the motor, preventing malfunction and damage of the motor and the electronic controller. do.

이를 위해 본 발명의 액츄에이터 구동장치는 일측이 전원접지된 모터를 구동시키는 액츄에이터 구동장치에 있어서, 상기 모터에 인가되는 배터리전압을 스위칭하는 제1스위칭소자와, 일측이 신호접지단에 연결되고, 상기 제1스위칭소자를 구동시키는 마이컴과, 상기 마이컴의 신호접지단의 단선시 발생하는 전압에 의해 작동하여 상기 제1스위칭소자를 오프시키는 제2스위칭소자를 포함한다.To this end, the actuator drive device of the present invention is an actuator drive device for driving a motor grounded on one side, the first switching element for switching the battery voltage applied to the motor, and one side is connected to the signal ground terminal, And a second switching element which is operated by a voltage generated when the signal ground terminal of the micom is disconnected to turn off the first switching element.

Description

액츄에이터 구동장치 {DEVICE FOR DRIVING ACTUATOR}Actuator Drive {DEVICE FOR DRIVING ACTUATOR}

도 1은 종래 액츄에이터 구동장치의 제어블록도이다.1 is a control block diagram of a conventional actuator driving device.

도 2는 본 발명의 실시예에 따른 액츄에이터 구동장치의 제어블록도이다.2 is a control block diagram of an actuator driving apparatus according to an embodiment of the present invention.

*도면의 주요 기능에 대한 부호의 설명*[Description of the Reference Numerals]

40 : ECU 41 : 제1스위칭소자40: ECU 41: first switching element

42 : 제2스위칭소자 44 : 마이컴42: second switching element 44: microcomputer

50 : 모터 60 : 신호접지단50: motor 60: signal ground terminal

61 : 전원접지단 R1 : 전류제한저항61: power supply ground R1: current limiting resistor

D1 : 역전압 방지용 다이오드D1: reverse voltage prevention diode

본 발명은 액츄에이터 구동장치에 관한 것으로, 더욱 상세하게는 전자제어유닛의 오동작을 방지할 수 있는 액츄에이터 구동장치에 관한 것이다.The present invention relates to an actuator drive device, and more particularly, to an actuator drive device that can prevent malfunction of the electronic control unit.

일반적으로, 전자 브레이크 시스템 일예로, 안티록 브레이크 시스템(anti-lock brake system ; 이하 ABS라 칭함)을 장착한 차량에서는 각 차륜의 휠 실린더에 가해지는 브레이크 액압을 감압, 유지 또는 증압하여 브레이크 성 능을 향상시키면서도 조향을 안정적으로 유지시킨다.In general, in an example of an electronic brake system, a vehicle equipped with an anti-lock brake system (hereinafter referred to as ABS) may reduce, maintain, or increase the brake hydraulic pressure applied to a wheel cylinder of each wheel to perform brake performance. Steering is maintained while improving steering.

이러한 안티록 브레이크 시스템에서는 각 휠 실린더의 유입 또는 유출측의 유압선 상에 각 휠 실린더에서의 브레이크 액압을 조절할 수 있도록 솔레노이드 밸브들과 각 휠 실린더로 브레이크액을 펌핑하여 공급하기 위한 모터 등과 같은 액츄에이터가 설치되어 있다.In such an anti-lock brake system, actuators such as solenoid valves and motors for pumping and supplying brake fluid to each wheel cylinder to adjust brake fluid pressure at each wheel cylinder on the hydraulic line on the inflow or outflow side of each wheel cylinder. Is installed.

종래의 액츄에이터 구동장치는 도 1에 도시된 바와 같이, 전반적인 제어를 수행하는 전자제어유닛(10)(Electronic Control Unit ; 이하 ECU 라 칭함)과, ECU(10)의 제어신호에 따라 작동하는 액츄에이터로서의 모터(20)를 구비한다. 이 전자제어유닛(10) 내에는 모터(20)에 인가되는 배터리전압을 스위칭하기 위한 스위칭소자(11)(FET)와, 이 스위칭소자들을 구동 및 제어하는 마이컴(13)을 구비한다.As shown in FIG. 1, a conventional actuator driving apparatus is an electronic control unit 10 (hereinafter referred to as ECU) which performs overall control, and acts as an actuator operating according to a control signal of the ECU 10. As shown in FIG. The motor 20 is provided. The electronic control unit 10 includes a switching element 11 (FET) for switching the battery voltage applied to the motor 20, and a microcomputer 13 for driving and controlling the switching elements.

그리고, 전원접지(power GND ; PGND)의 노이즈성분이 마이컴(13)에 영향을 주지 않도록 마이컴(13)은 전원접지단(31)과 분리된 신호접지단(30)(signal GND ; SGND)에 연결되어 있고, 모터(20)는 전원접지단(31)에 연결되어 있다.The microcomputer 13 is connected to the signal ground terminal 30 (signal GND; SGND) separated from the power ground terminal 31 so that the noise component of the power ground (power GND; PGND) does not affect the microcomputer 13. The motor 20 is connected to the power ground terminal 31.

그러나, 마이컴(13) 신호접지단(30)이 단선(open)된 경우, 단선된 신호접지단(30)에 정의되지 않는 전압이 발생하고, 이 전압에 의해 마이컴(13)이 온도 오프도 아닌 시츄에이션(Satuation)영역에 빠지게 된다. 이때, 마이컴(13)에서는 일정수준 낮아지긴 하였어도 스위칭소자(13)를 온 시킬 수 있을 정도의 전압을 출력하는 등 비정상적인 출력을 하게 된다. 이로 인해, 스위칭소자(11)가 온 상태를 유지하여 모터(20)의 구동이 마이컴 신호접지단의 단선되더라도 계속적으로 유지되기 때문에 모터(20) 및 ECU(10)가 오동작하거나 심한 경우에는 소손될 수 있는 문제점 이 있다.However, when the microcomputer 13 signal ground terminal 30 is open, an undefined voltage is generated at the disconnected signal ground terminal 30, and the microcomputer 13 is not turned off by the voltage. It falls into the situation area. At this time, even if the microcomputer 13 is lowered to a certain level, abnormal output such as outputting a voltage enough to turn on the switching element 13 is performed. As a result, since the switching element 11 is kept in the on state and the driving of the motor 20 is continuously maintained even when the microcomputer signal ground terminal is disconnected, the motor 20 and the ECU 10 may be damaged or malfunctioned. There is a problem that can be.

본 발명은 전술한 문제점을 해결하기 위한 것으로, 본 발명의 목적은 마이컴 신호접지단의 단선시 마이컴의 비정상적인 출력을 차단시켜 모터와 전자제어장치의 오동작 및 소손을 방지할 수 있는 액츄에이터 구동장치를 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention is to provide an actuator driving device that can prevent the malfunction and burnout of the motor and the electronic control device by blocking the abnormal output of the microcomputer when the microcomputer signal ground terminal is disconnected. It is.

전술한 목적을 달성하기 위한 본 발명의 액츄에이터 구동장치는 일측이 전원접지된 모터를 구동시키는 액츄에이터 구동장치에 있어서, 상기 모터에 인가되는 배터리전압을 스위칭하는 제1스위칭소자와, 일측이 신호접지단에 연결되고, 상기 제1스위칭소자를 구동시키는 마이컴과, 상기 마이컴의 신호접지단의 단선시 발생하는 전압에 의해 작동하여 상기 제1스위칭소자를 오프시키는 제2스위칭소자를 포함한다.An actuator driving device of the present invention for achieving the above object is an actuator driving device for driving a motor grounded at one side, the first switching element for switching the battery voltage applied to the motor, and one side is a signal ground end And a second switching device which is connected to the second switching device to drive the first switching device, and the second switching device that is operated by a voltage generated when the signal ground terminal of the microcomputer is disconnected.

상기 제2스위칭소자는 트랜지스터이며, 상기 트랜지스터의 베이스단은 전류제한저항을 개재하여 상기 마이컴의 신호접지단에 연결되고, 컬렉터단은 상기 제1스위칭소자의 게이트단에 연결되고, 이미터단은 순방향 연결된 역전압 방지용 다이오드를 개재하여 상기 모터의 전원접지단에 연결되는 것을 특징으로 한다.The second switching element is a transistor, the base end of the transistor is connected to the signal ground end of the microcomputer via a current limiting resistor, the collector end is connected to the gate end of the first switching element, and the emitter end is forward It is characterized in that it is connected to the power ground terminal of the motor via a reverse voltage prevention diode connected.

상기 전류제한저항과 상기 역전압 방지용 다이오드사이에는 복수의 커패시터가 병렬연결된 것을 특징으로 한다.A plurality of capacitors are connected in parallel between the current limiting resistor and the reverse voltage preventing diode.

이하에서는 본 발명의 바람직한 실시예를 본 도면을 참조하여 상세하게 설명하도록 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

본 발명의 실시예에 따른 액츄에이터 구동장치는 도 2에 도시된 바와 같이, 전반적인 제어를 수행하는 ECU(40)와, 모터(M)(51)와 같은 액츄에이터를 구비한다.As shown in FIG. 2, the actuator driving apparatus according to the embodiment of the present invention includes an ECU 40 that performs overall control and an actuator such as a motor (M) 51.

이 ECU(40) 내에는 모터(50)에 인가되는 배터리전압(BAT)을 스위칭하기 위한 제1스위칭소자(FET)(41)와, 이 제1스위칭소자(41)를 구동 및 제어하는 마이컴(44)을 구비한다.In the ECU 40, a first switching element (FET) 41 for switching the battery voltage BAT applied to the motor 50, and a microcomputer for driving and controlling the first switching element 41 ( 44).

상기한 제1스위칭소자(41)는 전계 효과 트랜지스터(Field-Effect Transistor ; FET)이다.The first switching element 41 is a field-effect transistor (FET).

한편, 모터(51)는 전원접지단(Power GND ; PGND)(61)에 연결되어 있고, 마이컴(44)은 모터(51)에 연결된 전원접지단(61)과 분리된 신호접지단(Signal GND ; SGND)(60)에 연결되어 있다.On the other hand, the motor 51 is connected to a power ground terminal (Power GND; PGND) 61, the microcomputer 44 is a signal ground terminal (Signal GND) separated from the power ground terminal 61 connected to the motor 51 SGND) 60.

상술한 바와 같이, 마이컴 신호접지단(60)이 단선(open)된 경우에는 단선된 신호접지단(60)에 정의되지 않는 전압이 발생하고, 이 전압에 의해 마이컴(44)이 시츄에이션(Satuation)영역에 빠져 일정수준 낮아지긴 하였어도 제1스위칭소자(41)를 온 시킬 수 있을 정도의 전압을 출력하기 때문에 마이컴 신호접지단(60)이 단선되더라도 스위칭소자(11)가 온 상태를 유지한다. 이로 인해, 모터(50)가 계속적으로 구동되기 때문에 모터(20) 및 ECU(10)가 오동작하거나 심한 경우에는 소손될 수 있게 된다.As described above, when the microcomputer signal ground terminal 60 is open, an undefined voltage is generated at the disconnected signal ground terminal 60, and the microcomputer 44 is driven by this voltage. Even though the level is lowered to a certain level, the switching device 11 is kept on even when the microcomputer signal ground terminal 60 is disconnected because the voltage is output to the degree that the first switching device 41 is turned on. As a result, since the motor 50 is continuously driven, the motor 20 and the ECU 10 may be damaged in the case of malfunction or severeness.

따라서, 본 발명에서는 이를 위해 도 2와 같이, 마이컴(44)의 신호접지단(60)의 단선시 발생하는 전압에 의해 작동하여 제1스위칭소자(41)를 오프시키는 제2스위칭소자(42)를 구비한다.Accordingly, in the present invention, as shown in FIG. 2, the second switching element 42 which is operated by a voltage generated when the signal ground terminal 60 of the microcomputer 44 is disconnected to turn off the first switching element 41. It is provided.

이 제2스위칭소자는 트랜지스터(TR1)(42)이며, 이 트랜지스터(42)의 베이스단은 전류제한저항(R1)을 개재하여 마이컴 신호접지단(60)에 연결되고, 컬렉터단은 제1스위칭소자의 게이트단에 연결되고, 이미터단은 순방향 연결된 역전압 방지용 다이오드(D1)를 개재하여 모터(50)의 전원접지단(61)에 연결된다. 이때, 전류제한저항(R1)은 마이컴 신호접지단(60)의 단선시 발생된 전압에 의한 전류에 의해 트랜지스터(41)가 손상되는 것을 방지하는 역할을 하고, 역전압 방지용 다이오드(D1)는 모터(50)의 전원접지단(61)이 단선되더라도 그로 인해 발생된 전압에 의한 전류에 의해 트랜지스터가 파손되는 것을 방지하는 역할을 한다.The second switching element is a transistor (TR1) 42, the base end of which is connected to the microcomputer signal ground terminal 60 via a current limiting resistor R1, and the collector end is the first switching. The emitter terminal is connected to the gate terminal of the device, and the emitter terminal is connected to the power supply ground terminal 61 of the motor 50 via the reverse voltage preventing diode D1. At this time, the current limiting resistor R1 serves to prevent the transistor 41 from being damaged by the current caused by the voltage generated when the microcomputer signal ground terminal 60 is disconnected, and the reverse voltage preventing diode D1 is a motor. Even if the power supply ground terminal 61 of 50 is disconnected, it serves to prevent the transistor from being damaged by the current caused by the voltage generated thereby.

따라서, 마이컴 신호접지단(60)의 단선시 발생된 전압에 의한 전류는 전류제한저항(R1)을 통하여 트랜지스터(41)의 베이스단에 유입되고, 이 전류에 의해 트랜지스터(42)가 턴 온하게 된다. 이로 인해, 마이컴(44)에서 출력되는 비정상적인 출력전압에 의한 전류가 트랜지스터(41)의 컬렉터단과 이미터단을 통하여 모터(50)의 전원접지단(61)으로 바이패스 되므로, 제1스위칭소자(41)를 오프시켜 배터리전압(BAT)에 의한 전류가 모터(50)에 유입되는 것을 차단시킬 수 있어 모터(50)가 정지되게 된다.Therefore, the current due to the voltage generated when the microcomputer signal ground terminal 60 is disconnected flows into the base terminal of the transistor 41 through the current limiting resistor R1, and the transistor 42 is turned on by the current. do. As a result, the current caused by the abnormal output voltage output from the microcomputer 44 is bypassed to the power supply ground terminal 61 of the motor 50 through the collector terminal and the emitter terminal of the transistor 41, and thus, the first switching element 41. By turning off), it is possible to block the current caused by the battery voltage BAT from flowing into the motor 50 so that the motor 50 is stopped.

한편, 상술한 역전압 방지용 다이오드(D1)의 역할과 마찬가지로, 전류제한저항(R1)과 역전압 방지용 다이오드(D1)사이에 병렬 연결된 일예로, C1, C2 2개의 커패시터에 의해서 모터(50)의 전원접지단(61)이 단선되더라도 그로 인해 발생된 전압에 의한 전류에 의해 트랜지스터가 파손되는 것을 방지할 수 있게 된다.On the other hand, as in the role of the reverse voltage prevention diode (D1) described above, in one example connected in parallel between the current limiting resistor (R1) and the reverse voltage prevention diode (D1), C1, C2 two capacitors of the motor 50 Even if the power supply ground terminal 61 is disconnected, it is possible to prevent the transistor from being damaged by the current caused by the generated voltage.

이상에서 상세히 설명한 바와 같이, 본 발명은 마이컴 신호접지단의 전압레레벨에 따라 작동하여 모터에 인가되는 배터리전원을 자동으로 차단시킬 수 있는 스위칭소자를 마련하고, 마이컴 신호접지단의 단선에 의해 신호접지단의 전압레벨이 미리 설정된 수준이상으로 상승하면, 상승된 전압에 의해 스위칭소자가 작동하여 모터에 인가되는 배터리전원을 차단시킬 수 있어 모터와 전자제어장치의 오동작 및 소손을 방지할 수 있는 효과가 있다.As described in detail above, the present invention provides a switching device capable of automatically cutting off the battery power applied to the motor by operating according to the voltage level of the microcomputer signal grounding terminal, and signaling by disconnection of the microcomputer signal grounding terminal. When the voltage level of the ground terminal rises above the predetermined level, the switching element operates by the increased voltage to cut off the battery power applied to the motor, thereby preventing the motor and the electronic control device from malfunctioning and burning. There is.

또한, 본 발명은 트랜지스터를 추가하는 것만으로 마이컴 신호접지단의 단선시 발생하는 마이컴의 비정상적인 출력을 간단히 차단할 수 있는 효과가 있다.In addition, the present invention has the effect of simply blocking the abnormal output of the microcomputer generated when the microcomputer signal ground terminal is disconnected by simply adding a transistor.

Claims (3)

일측이 전원접지된 모터를 구동시키는 액츄에이터 구동장치에 있어서,In the actuator driving device for driving a motor grounded on one side, 상기 모터에 인가되는 배터리전압을 스위칭하고 전계 효과 트랜지스터로 이루어진 제1스위칭소자와,A first switching element which switches a battery voltage applied to the motor and is made of a field effect transistor; 일측이 신호접지단에 연결되고, 상기 제1스위칭소자를 구동시키는 마이컴과,A microcomputer having one side connected to the signal ground terminal and driving the first switching device; 상기 마이컴의 신호접지단의 단선시 발생하는 전압에 의해 작동하여 상기 제1스위칭소자를 오프시키는 제2스위칭소자를 포함하고,A second switching device which is operated by a voltage generated when the signal ground terminal of the microcomputer is disconnected to turn off the first switching device; 상기 제2스위칭소자는 트랜지스터이며, 상기 트랜지스터의 베이스단은 전류제한저항을 개재하여 상기 마이컴의 신호접지단에 연결되고, 컬렉터단은 상기 제1스위칭소자의 게이트단에 연결되고, 이미터단은 순방향 연결된 역전압 방지용 다이오드를 개재하여 상기 모터의 전원접지단에 연결되고,The second switching element is a transistor, the base end of the transistor is connected to the signal ground end of the microcomputer via a current limiting resistor, the collector end is connected to the gate end of the first switching element, and the emitter end is forward It is connected to the power ground terminal of the motor via the connected reverse voltage prevention diode, 상기 전류제한저항과 상기 역전압 방지용 다이오드사이에는 두 개의 커패시터(C1, C2)가 병렬연결되어, 상기 모터의 전원접지단이 단선되더라도 그로 인해 발생된 전압에 의한 전류에 의해 상기 트랜지스터가 파손되는 것을 방지하는 것을 특징으로 하는 액츄에이터 구동장치.Two capacitors C1 and C2 are connected in parallel between the current limiting resistor and the reverse voltage preventing diode, so that the transistor is damaged by the current caused by the generated voltage even when the power ground terminal of the motor is disconnected. Actuator drive, characterized in that to prevent. 삭제delete 삭제delete
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KR20190089516A (en) * 2018-01-23 2019-07-31 주식회사 만도 Power supply unit

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KR101590167B1 (en) * 2010-06-03 2016-01-29 현대모비스 주식회사 Circuit for preventing error of motor driver of anti-lock brake system
KR101952098B1 (en) * 2012-09-04 2019-02-26 현대모비스 주식회사 Apparatus and Method for Stabilizing Battery Power of Electric Booster System
KR102502388B1 (en) * 2018-06-19 2023-02-23 에이치엘만도 주식회사 Control device and method for EPS power supply in vehicle

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KR20190089516A (en) * 2018-01-23 2019-07-31 주식회사 만도 Power supply unit
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