KR970016626A - Servo motor overload detection method and overload protection device using the same - Google Patents

Servo motor overload detection method and overload protection device using the same Download PDF

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Publication number
KR970016626A
KR970016626A KR1019950029673A KR19950029673A KR970016626A KR 970016626 A KR970016626 A KR 970016626A KR 1019950029673 A KR1019950029673 A KR 1019950029673A KR 19950029673 A KR19950029673 A KR 19950029673A KR 970016626 A KR970016626 A KR 970016626A
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KR
South Korea
Prior art keywords
servomotor
temperature
overload
measuring
phase
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KR1019950029673A
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Korean (ko)
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KR0179574B1 (en
Inventor
장준현
조성훈
조윤호
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석진철
대우중공업 주식회사
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Priority to KR1019950029673A priority Critical patent/KR0179574B1/en
Publication of KR970016626A publication Critical patent/KR970016626A/en
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Publication of KR0179574B1 publication Critical patent/KR0179574B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0856—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load characterised by the protection measure taken

Abstract

본 발명은 서보모터의 과부하 검출 방법 및 이를 이용한 과부하 보호장치에 관한 것으로, 과부하 보호장치는 서보모터(1) ; 상온에서의 저항(R0), 온도(θ0), 역기전력정수(KE)를 저장하고 있는 메모리(6) ; 상기 서보모터(1)의 상간전압(Vt)을 측정하는 전압측정부(3) ; 상기 서보모터의 상간전류(Ia)를 측정하는 전류측정부(4) ; 서보모터의 회전수(N)를 측정하는 속도측정수단(2,5) ; 제어신호에 따라 상기 서보모터(1)에 인가되는 전원을 차단하여 과부하로부터 서보모터(1)를 보호하는 차단수단(8) ; 및 상기 측정된 전압(Vt), 전류(Ia), 회전수(N)를 입력받고 메모리(6)에 저장된 상수값을 읽어와 서보모터 권선의 온도를 산출하고, 산출된 온도를 소정의 기준온도와 비교하여 제어신호를 발생하는 계산수단(7)으로 구성되어 있다.The present invention relates to a method for detecting an overload of a servomotor and an overload protection device using the same, the overload protection device comprising: a servomotor (1); A memory 6 storing a resistance R 0 at room temperature, a temperature θ 0 , and a constant electromotive force constant K E ; A voltage measuring unit (3) for measuring the phase voltage (V t ) of the servomotor (1); A current measuring unit 4 for measuring the phase current I a of the servomotor; Speed measuring means (2, 5) for measuring the rotational speed (N) of the servomotor; Blocking means (8) for protecting the servomotor (1) from overload by cutting off the power applied to the servomotor (1) in accordance with a control signal; And receiving the measured voltage V t , current I a , and rotation speed N, reading constant values stored in the memory 6, calculating the temperature of the servomotor winding, and calculating the calculated temperature. Comprising a calculation means (7) for generating a control signal compared to the reference temperature.

[대표도면 : 제4도][Representative drawing: Fig. 4]

Description

서보모터의 과부하 검출 방법 및 이를 이용한 과부하 보호장치Servo motor overload detection method and overload protection device using the same

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명에 따른 서보모터 과부하 검출방법의 순서도,3 is a flow chart of the servomotor overload detection method according to the present invention,

제4도는 본 발명에 따른 서보모터 과부하 검출장치를 도시한 블럭도이다.4 is a block diagram showing a servomotor overload detection apparatus according to the present invention.

Claims (7)

모터의 권선에서 전압과 전류를 측정하고, 상기 모터의 회전수를 측정하여, 이 측정된 값들과 미리 기억된 모터상수를 이용하여 상저항을 계산한 후, 이 상저항의 증가분만큼의 과열온도를 소정 식에 따라 산출한 후 설정된 기준온도와 비교하여 서보모터의 과부하를 검출하는 서보모터의 과부하 검출방법.Measure the voltage and current in the windings of the motor, measure the number of revolutions of the motor, calculate the phase resistance using these measured values and the pre-stored motor constants, and then measure the overheat temperature by the increment of this phase resistance. An overload detection method for a servomotor that detects an overload of a servomotor by comparing with a set reference temperature after calculating according to a predetermined equation. 제1항에 있어서, 상기 상저항은에 따라 산출되는 것을 특징으로 하는 서보모터의 과부하 검출방법.The method of claim 1, wherein the phase resistance The overload detection method of the servo motor, characterized in that calculated according to. 제1항에 있어서, 상기 과열온도는 식에 따라 산출되는 것을 특징으로 하는 서보모터의 과부하 검출방법.The method of claim 1, wherein the superheat temperature is The overload detection method of the servo motor, characterized in that calculated according to. 서보모터(1) ; 상기 서보모터의 상온에서의 저항, 해당 온도, 역기전력정수를 저장하고 있는 메모리(6) ; 서보모터의 상간전압을 측정하는 전압측정부(3) ; 서보모터의 상간전류를 측정하는 전류측정부(4) ; 서보모터의 회전수를 측정하는 속도측정수단(2,5) ; 제어신호에 따라 서보모터에 인가되는 전원을 차단하여 과부하로부터 서보모터를 보호하는 차단수단(8) ; 및 상기 측정된 전압, 전류, 회전수를 입력받고 메모리에 저장된 상수값을 읽어와 과부하시 저항값을 계산한 후, 이 저항값으로부터 서보모터 권선의 온도를 산출하고, 산출된 온도를 소정의 기준온도와 비교하여 제어신호를 발생하는 계산수단으로 구성되는 서보모터의 과부하 보호장치.Servomotor 1; A memory (6) for storing the resistance at room temperature of the servomotor, the corresponding temperature, and the counter electromotive force constant; A voltage measuring unit 3 for measuring a phase-to-phase voltage of the servomotor; A current measuring unit 4 for measuring the phase current between the servo motors; Speed measuring means (2,5) for measuring the rotational speed of the servomotor; Blocking means (8) for protecting the servomotor from overload by cutting off the power applied to the servomotor in accordance with the control signal; And inputting the measured voltage, current, and rotation speed, reading a constant value stored in a memory, calculating a resistance value at overload, calculating a temperature of the servomotor winding from the resistance value, and calculating the temperature based on the calculated temperature. An overload protection device for a servomotor comprising a calculation means for generating a control signal in comparison with temperature. 제4항에 있어서, 상기 속도측정수단은 엔코더를 포함하는 것을 특징으로 하는 서보모터의 과부하 보호장치.5. The overload protection apparatus of claim 4, wherein the speed measuring means includes an encoder. 제4항에 있어서, 상기 계산수단은 마이크로프로세서로 구현되는 것을 특징으로 하는 서보모터의 과부하 보호장치.The overload protection apparatus of claim 4, wherein the calculation means is implemented by a microprocessor. 제4항에 있어서, 상기 계산수단이 상기 상저항은 식에 따라 산출하고, 상기 과열온도는 식에 따라 산출하는 것을 특징으로 하는 서보모터의 과부하 보호장치.The method of claim 4, wherein the phase resistance is calculated by the formula The superheat temperature is calculated according to the formula Overload protection device for a servo motor, characterized in that calculated according to. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950029673A 1995-09-12 1995-09-12 Overload detecting method of servomotor and overload protection apparatus using this KR0179574B1 (en)

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KR1019950029673A KR0179574B1 (en) 1995-09-12 1995-09-12 Overload detecting method of servomotor and overload protection apparatus using this

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KR0179574B1 KR0179574B1 (en) 1999-05-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100438598B1 (en) * 2001-06-29 2004-07-02 엘지전자 주식회사 Driving control method of washine machine with sensorless bldc motor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100851905B1 (en) * 2007-03-28 2008-08-13 삼성전자주식회사 Method and preheating control apparatus of compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100438598B1 (en) * 2001-06-29 2004-07-02 엘지전자 주식회사 Driving control method of washine machine with sensorless bldc motor

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