KR20020041977A - Driving control apparatus for linear compressor - Google Patents

Driving control apparatus for linear compressor Download PDF

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Publication number
KR20020041977A
KR20020041977A KR1020000071657A KR20000071657A KR20020041977A KR 20020041977 A KR20020041977 A KR 20020041977A KR 1020000071657 A KR1020000071657 A KR 1020000071657A KR 20000071657 A KR20000071657 A KR 20000071657A KR 20020041977 A KR20020041977 A KR 20020041977A
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KR
South Korea
Prior art keywords
stroke
linear compressor
current
voltage
signal
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KR1020000071657A
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Korean (ko)
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KR100382919B1 (en
Inventor
황인영
박준형
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구자홍
엘지전자주식회사
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Priority to KR10-2000-0071657A priority Critical patent/KR100382919B1/en
Priority to US09/989,421 priority patent/US6537034B2/en
Priority to BRPI0105454-6A priority patent/BR0105454B1/en
Priority to CNB011424486A priority patent/CN1325797C/en
Priority to JP2001364898A priority patent/JP4567256B2/en
Publication of KR20020041977A publication Critical patent/KR20020041977A/en
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Publication of KR100382919B1 publication Critical patent/KR100382919B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0401—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/04—Motor parameters of linear electric motors
    • F04B2203/0402—Voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2207/00—External parameters
    • F04B2207/04—Settings
    • F04B2207/046—Settings of length of piston stroke

Abstract

PURPOSE: A device for controlling operation of linear compressor is provided to improve operational efficiency of the linear compressor by controlling stroke by changing amount of work operation value. CONSTITUTION: A device includes a linear compressor(L.COMP); a voltage detective part(300); a current detective part(200); a displacement calculation part(400); a work operation part(500); a micro computer(600); and an electric circuit part(100). The displacement calculation part calculates displacement by voltage and current detected by the voltage detective part and the current detective part. The work operation part receives displacement and current from the displacement calculation part and the current detective part to operate to output corresponding work operation signal(W). The micro computer receives work operation signal from the work operation part to compare with previous work operation signal to output corresponding switching control signal. The electric circuit part intermits alternating current power by a triac(Tr1) to impress stroke voltage to the linear compressor by the switching control signal of the micro computer.

Description

리니어 컴프레샤의 운전제어장치{DRIVING CONTROL APPARATUS FOR LINEAR COMPRESSOR}DRIVING CONTROL APPARATUS FOR LINEAR COMPRESSOR}

본 발명은 리니어 컴프레샤의 운전제어장치에 관한 것으로, 특히 입력전류와 변위의 크기의 곱을 적분하여 구한 일연산값을 인식하여 그 일연산값의 크기의 변화량으로 스트로크를 제어하도록 한 리니어 컴프레샤의 운전제어장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for a linear compressor, and more particularly, to operation control of a linear compressor for recognizing a daily operation value obtained by integrating a product of an input current and a magnitude of displacement, and controlling a stroke by a change amount of the size of the daily operation value. Relates to a device.

일반적으로, 리니어 컴프레샤(Linear Compressor)는 회전운동을 직선운동으로 변환하는 크랜크 샤프트가 없어 마찰 손실이 적으므로, 효율면에서 다른 컴프레샤 보다 효율이 좋으며, 또한 리니어 컴프레샤가 냉장고나 에어컨으로 사용될 경우, 리니어 컴프레샤에 인가되는 스트로크전압을 가변시켜줌에 따라 압축비를 가변할 수 있어 가변 냉력 제어에도 사용될 수 있는 장점이 있는 것으로, 이와 같은 리니어 컴프레샤를 첨부한 도면을 참조하여 상세히 설명한다.In general, since the linear compressor has no friction loss because there is no crankshaft that converts rotational motion into linear motion, it is more efficient than other compressors in terms of efficiency, and when the linear compressor is used as a refrigerator or an air conditioner, Compression ratio can be varied by varying the stroke voltage applied to the linear compressor, which can be used for variable cooling power control. Such a linear compressor will be described in detail with reference to the accompanying drawings.

도1은 일반적인 리니어 컴프레샤의 운전제어장치에 대한 구성을 보인 블록도로서, 이에 도시된 바와같이 스트로크 지령치에 따른 스트로크 전압에 의해, 피스톤이 상하운동으로 스트로크를 가변시켜 냉력을 조절하는 리니어 컴프레샤(L.COMP)와; 스트로크 전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤 (L.COMP)에 발생하는 전압을 검출하는 전압검출부(30)와; 스트로크전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤(L.COMP)에 인가되는 전류를 검출하는 전류 검출부(20)와; 상기 전압검출부(30) 및 전류 검출부(20)로부터 검출된전압과 전류로 스트로크를 계산하고, 그 스트로크를 스트로크지령치와 비교하여 그에 따른 스위칭제어신호를 출력하는 마이크로컴퓨터(40)와; 상기 마이크로컴퓨터 (40)의 스위칭제어신호에 따라, 교류전원을 트라이악(Tr1)으로 단속시켜 상기 리니어컴프레샤(L.COMP)에 스트로크전압을 인가하는 전기회로부(10)로 구성되고, 이와같이 구성된 종래 장치의 동작을 설명한다.Figure 1 is a block diagram showing the configuration of the operation control device of a general linear compressor, as shown in the linear pressure by the stroke voltage in accordance with the stroke command value, the piston to change the stroke in the vertical movement to adjust the cooling force (L) .COMP); A voltage detector (30) for detecting a voltage generated in the linear compressor (L.COMP) as the stroke is increased by the stroke voltage; A current detector 20 which detects a current applied to the linear compressor L.COMP as the stroke is increased by the stroke voltage; A microcomputer (40) for calculating a stroke from the voltage and current detected from the voltage detector (30) and the current detector (20), comparing the stroke with a stroke command value, and outputting a switching control signal according to the stroke command value; In accordance with the switching control signal of the microcomputer 40, consisting of an electric circuit section 10 for interrupting the AC power to the triac (Tr1) to apply a stroke voltage to the linear compressor (L.COMP), the conventional configuration configured as described above Describe the operation of the device.

먼저, 리니어 컴프레샤(L.COMP)는 사용자에 의해 설정된 스트로크 지령치에 따른 스트로크전압에 의해, 피스톤이 상하 운동되고, 이로 인해 스트로크가 가변되어 냉력을 조절한다.First, in the linear compressor L.COMP, the piston is moved up and down by the stroke voltage according to the stroke command value set by the user, whereby the stroke is variable to adjust the cooling force.

한편, 전기회로부(10)의 트라이악(Tr1)은 마이크로컴퓨터(40)의 스위칭제어신호에 의해 턴온 주기가 길어짐에 의해 스트로크가 증가되는데, 이때 리니어 컴프레샤(L.COMP)에 발생하는 전압과 전류를 각기 전압검출부 (30)와 전류검출부(20)에서 검출하여 이를 마이크로컴퓨터(40)에 인가한다.Meanwhile, the stroke of the triac Tr1 of the electric circuit unit 10 is increased due to a long turn-on period due to the switching control signal of the microcomputer 40. At this time, the voltage and current generated in the linear compressor L.COMP are increased. Are respectively detected by the voltage detector 30 and the current detector 20 and applied to the microcomputer 40.

그러면, 상기 마이크로컴퓨터(40)는 상기 전압검출부(30)와 전류검출부(20)로부터 검출된 전압과 전류를 이용하여 스트로크를 계산한후, 이 스트로크를 스트로크지령치와 비교하여 그에 따라 스위칭제어신호를 출력한다.Then, the microcomputer 40 calculates a stroke by using the voltage and current detected from the voltage detector 30 and the current detector 20, and compares the stroke with the stroke command value, thereby converting the switching control signal accordingly. Output

즉, 상기 마이크로컴퓨터(40)는 계산된 스트로크가 스트로크 지령치 보다 작으면, 트라이악(Tr1)의 온주기를 길게 하는 스위칭제어신호를 출력하여 리니어컴프레샤(L.COMP)에 인가되는 스트로크전압을 증가시킨다.That is, when the calculated stroke is smaller than the stroke command value, the microcomputer 40 outputs a switching control signal for lengthening the on-cycle of the triac Tr1 to increase the stroke voltage applied to the linear compressor L.COMP. Let's do it.

상술한 바와 달리, 상기 마이크로컴퓨터(40)는 계산된 스트로크가 스트로크 지령치 보다 크면, 트라이악(Tr1)의 온주기를 짧게 하는 스위칭제어신호를 출력하여 리니어 컴프레샤(L.COMP)에 인가되는 스트로크전압을 감소시킨다.Unlike the above description, when the calculated stroke is larger than the stroke command value, the microcomputer 40 outputs a switching control signal for shortening the on-cycle of the triac Tr1 to apply the stroke voltage to the linear compressor L.COMP. Decreases.

그러나, 상기와 같이 동작하는 종래 장치는, 기구적 운동 특성이 심한 비선형성을 가지고 있으므로 그 비선형성을 감안하지 않는 선형적인 제어 방법으로는 정밀 제어가 불가능한 문제점이 있었다.However, the conventional apparatus operating as described above has a problem in that precise control is impossible with a linear control method that does not consider the nonlinearity because the mechanical motion characteristic has a severe nonlinearity.

따라서, 상기와 같은 문제점을 감안하여 창안한 본 발명은 입력전류와 변위의 크기의 곱을 적분하여 구한 일연산값을 인식하여 그 일연산값의 크기의 변화량으로 스트로크를 제어함으로써 리니어 컴프레샤의 운전 효율을 향상시키도록 한 리니어 컴프레샤의 운전제어장치를 제공함에 그 목적이 있다.Therefore, the present invention devised in view of the above problems recognizes the daily operation value obtained by integrating the product of the input current and the magnitude of the displacement, and improves the operation efficiency of the linear compressor by controlling the stroke with the amount of change in the magnitude of the daily operation value. It is an object of the present invention to provide an operation control device of a linear compressor to improve.

도1은 종래 리니어 컴프레샤의 운전제어장치에 대한 구성을 보인 블록도.1 is a block diagram showing a configuration of an operation control apparatus of a conventional linear compressor.

도2는 본 발명 컴프레샤의 운전제어장치에 대한 구성을 보인 블록도.Figure 2 is a block diagram showing the configuration of the operation control device of the compressor of the present invention.

도3은 도2에 있어서, 전류와 변위사이의 대응 관계를 나타낸도.FIG. 3 is a diagram showing a corresponding relationship between current and displacement in FIG. 2; FIG.

도4는 도2에 있어서, 스위칭제어신호의 듀티비 증가에 따른 일연산신호의 변화를 보인도.FIG. 4 is a diagram showing a change in the one operation signal with increasing duty ratio of the switching control signal in FIG. 2; FIG.

*****도면의 주요부분에 대한 부호의 설명********** Description of the symbols for the main parts of the drawings *****

100:전기회로부200:전류검출부100: electrical circuit unit 200: current detection unit

300:전압검출부400:변위계산부300: voltage detector 400: displacement calculator

500:일연산부600:마이크로컴퓨터500: daily computing unit 600: microcomputer

상기와 같은 목적을 달성하기 위한 본 발명은 스트로크 지령치에 따른 스트로크 전압에 의해, 피스톤이 상하운동으로 스트로크를 가변시켜 냉력을 조절하는 리니어 컴프레샤와; 스트로크 전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤에 발생하는 전압을 검출하는 전압검출부와; 스트로크전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤에 인가되는 전류를 검출하는 전류 검출부와; 상기 전압검출부 및 전류 검출부로부터 검출된 전압과 전류로 변위를 계산하는 변위계산부와; 상기 변위계산부의 변위와 상기 전류검출부의 전류를 입력받아 이를 소정 연산하여 그에 따른 일연산신호를 출력하는 일연산부와; 상기 일연산부의 일연산신호를 입력받아 이를 이전 일연산신호와 비교하여 그에 따른 스위칭제어신호를 출력하는 마이크로컴퓨터와; 상기 마이크로컴퓨터의 스위칭제어신호에 따라, 교류전원을 트라이악으로 단속시켜 상기 리니어컴프레샤에 스트로크전압을 인가하는 전기회로부를 포함하여 구성한 것을 특징으로 한다.The present invention for achieving the above object is a linear compressor for adjusting the cooling force by varying the stroke in the vertical movement of the piston by the stroke voltage according to the stroke command value; A voltage detector for detecting a voltage generated in the linear compressor as the stroke is increased by the stroke voltage; A current detector for detecting a current applied to the linear compressor as the stroke is increased by the stroke voltage; A displacement calculator for calculating displacements from the voltage and current detected by the voltage detector and the current detector; A one operation unit which receives the displacement of the displacement calculation unit and the current of the current detection unit, calculates the predetermined operation, and outputs a corresponding one operation signal; A microcomputer which receives the one operation signal of the one operation unit and compares it with a previous one operation signal and outputs a switching control signal accordingly; In accordance with the switching control signal of the microcomputer, the AC power is interrupted by a triac, characterized in that it comprises an electric circuit section for applying a stroke voltage to the linear compressor.

이하, 본 발명에 의한 리니어 컴프레샤의 운전제어장치에 대한 작용 및 효과를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the operation and effect of the operation control device of the linear compressor according to the present invention will be described in detail.

도2는 본 발명 리니어 컴프레샤의 운전제어장치에 대한 구성을 보인 블록도로서, 이에 도시한 바와같이 스트로크 지령치에 따른 스트로크 전압에 의해, 피스톤이 상하운동으로 스트로크를 가변시켜 냉력을 조절하는 리니어 컴프레샤(L.COMP)와; 스트로크 전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤 (L.COMP)에 발생하는 전압을 검출하는 전압검출부(300)와; 스트로크전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤(L.COMP)에 인가되는 전류를 검출하는 전류 검출부(200)와; 상기 전압검출부(300) 및 전류 검출부(200)로부터 검출된 전압과 전류로 변위를 계산하는 변위계산부(400)와; 상기 변위계산부(400)의 변위와 상기 전류검출부(200)의 전류를 입력받아 이를 소정 연산하여 그에 따른 일연산신호(W)를 출력하는 일연산부(5000와; 상기 일연산부(500)의 일연산신호(W)를 입력받아 이를 이전 일연산신호(W)와 비교하여 그에 따른 스위칭제어신호를 출력하는 마이크로컴퓨터(600)와; 상기 마이크로컴퓨터(600)의 스위칭제어신호에 따라, 교류전원을 트라이악(Tr1)으로 단속시켜 상기 리니어컴프레샤 (L.COMP)에 스트로크전압을 인가하는 전기회로부(100)로 구성하며, 이와같이 구성한 본 발명의 동작을 설명한다.Figure 2 is a block diagram showing the configuration of the operation control device of the linear compressor of the present invention. L.COMP); A voltage detector (300) for detecting a voltage generated in the linear compressor (L.COMP) as the stroke is increased by the stroke voltage; A current detector (200) for detecting a current applied to the linear compressor (L.COMP) as the stroke is increased by the stroke voltage; A displacement calculator (400) for calculating displacements from the voltage and current detected by the voltage detector (300) and the current detector (200); A daily calculation unit 5000 which receives the displacement of the displacement calculating unit 400 and the current of the current detection unit 200 and outputs a predetermined operation signal W according to a predetermined operation thereof; and a daily operation of the daily operation unit 500. A microcomputer 600 that receives the signal W and compares it with a previous one-time operation signal W and outputs a switching control signal according to the switching signal of the microcomputer 600; The operation of the present invention constituted by the electric circuit unit 100 which interrupts the evil Tr1 and applies a stroke voltage to the linear compressor L.COMP will be described.

먼저, 리니어 컴프레샤(L.COMP)는 사용자에 의해 설정된 스트로크 지령치에따른 스트로크전압에 의해, 피스톤이 상하 운동되고, 이로 인해 스트로크가 가변되어 냉력을 조절한다.First, in the linear compressor L.COMP, the piston is moved up and down by the stroke voltage according to the stroke command value set by the user, whereby the stroke is variable to adjust the cooling force.

즉, 전기회로부(100)의 트라이악(Tr1)이 마이크로컴퓨터(600)의 스위칭제어신호에 의해 턴온주기가 길어짐에 의해 스트로크가 증가되면, 그 스트로크에 의해 리니어 컴프레샤(L.COMP)가 구동한다.That is, when the stroke of the triac Tr1 of the electric circuit unit 100 increases due to the turn-on period being increased by the switching control signal of the microcomputer 600, the linear compressor L.COMP is driven by the stroke. .

이때, 전압검출부(300)와 전류검출부(200)는 상기 리니어 컴프레샤 (L.CO MP)에 발생하는 전압과 전류를 각기 검출하여 이를 변위계산부(400)에 인가하고, 이에 따라 상기 변위계산부(400)는 상기 전압검출부 (300)의 검출전압과 상기 전류검출부 (200)의 검출전류를 이용하여 변위를 계산하여 출력한다.In this case, the voltage detector 300 and the current detector 200 detect voltages and currents generated in the linear compressor (L.CO MP), and apply them to the displacement calculator 400, thereby applying the displacement calculator 400. ) Calculates and outputs a displacement using the detected voltage of the voltage detector 300 and the detected current of the current detector 200.

이때, 일연산부(500)는 상기 변위계산부(400)의 변위와 상기 전류검출부 (200)의 전류를 입력받아 그 전류와 변위를 승산한후, 그 승산값을 적분하여 그 적분값을 일연산신호(W)로 출력하는데, 이를 수식으로 표현하면 아래와 같다.At this time, the daily operation unit 500 receives the displacement of the displacement calculation unit 400 and the current of the current detection unit 200, multiplies the current and the displacement, integrates the multiplication value, and converts the integral value to the daily operation signal. Output as (W), which is expressed as an expression below.

, 적분구간은 1/60초 단위 , Integral period is 1/60 second

여기서, 도3은 리니어 컴프레샤(L.COMP)의 기동이 나타날때, 그때의 전류와 변위의 궤적을 시간의 변화에 따라 도시한 것으로, 'A'는 전류와 변위 궤적중의 한 지점이며, 그 전류와 변위에 대한 궤적의 이동은 리니어 컴프레샤(L.COMP)에 공급되는 전원주파수에 동기되어 1/60 마다 반복하게 된다.FIG. 3 shows the current and displacement trajectories at the time when the linear compressor L.COMP starts up, and 'A' is a point in the current and displacement trajectories. The movement of the trajectory with respect to current and displacement is repeated every 1/60 in synchronization with the power frequency supplied to the linear compressor (L.COMP).

이후, 마이크로컴퓨터(600)는 상기 일연산부(500)의 일연산신호(W)를 입력받아 이를 이전 일연산신호(W)와 비교하여 그에 따른 스위칭제어신호를 출력한다.Thereafter, the microcomputer 600 receives the one operation signal W of the one operation unit 500 and compares it with the previous one operation signal W and outputs the switching control signal accordingly.

여기서, 도4에서 보는 바와같이, 현재 일연산신호(W)와 이전 일연산신호(W)의 차이가 소정값 이상 급격이 증가되는 지점이 있는데, 실험결과 그 지점이 TDC가 '0'인 지점임을 알수 있다.Here, as shown in Figure 4, there is a point where the difference between the current one-day signal (W) and the previous one-day signal (W) is increased more than a predetermined value, the point where the TDC is '0' as a result of the experiment You can see that.

따라서, 상기 마이크로컴퓨터(600)는 현재 일연산신호(W)를 이전 일연산신호 (W)와 비교하여 그 차이가 소정값 이하이면 스위칭제어신호의 듀티비를 점차 증가시켜 출력하다가, 현재 일연산신호(W)와 이전 일연산신호 (W)의 차이가 소정값 이상이 되면 현 시점의 듀티비를 가진 스위칭제어신호를 유지시켜 출력한다.Accordingly, the microcomputer 600 compares the current day operation signal W with the previous day operation signal W, and if the difference is less than a predetermined value, gradually increases the duty ratio of the switching control signal and outputs the current day operation. When the difference between the signal W and the previous one-time operation signal W becomes a predetermined value or more, the switching control signal having the duty ratio at the present time is maintained and output.

이후, 전기회로부(100)는 상기 마이크로컴퓨터(600)의 스위칭제어신호에 따라, 교류전원을 트라이악(Tr1)으로 단속시켜 상기 리니어컴프레샤 (L.COMP)에 스트로크전압을 인가하여 그 리니어컴프레샤(L.COMP)의 운전을 제어한다.Subsequently, the electric circuit unit 100 intercepts AC power with the triac Tr1 according to the switching control signal of the microcomputer 600 to apply a stroke voltage to the linear compressor L.COMP so that the linear compressor ( L.COMP) control.

다시 말해서, 본 발명은 리니어 컴프레샤(L.COMP)의 운전시에 발생하는 전류와 변위에 대응하여 가변되는 궤적의 면적을, 전기회로부(100)의 트라이악(Tr1)에 인가되는 스위칭제어신호의 듀티비를 증가시키면서 일연산신호로 인식하다가, 그 일연산신호가 이전 일연산신호보다 급격히 증가되면 그 시점이 TDC가 '0'일때의 지점으로 인지하여 그 시점의 스위칭제어신호로 트라이악(Tr1)의 온/오프 주기를 제어하여 리니어컴프레샤(L.COMP)의 운전을 제어한다.In other words, the present invention relates to an area of the trajectory that is varied in response to the current and displacement generated during the operation of the linear compressor L.COMP, of the switching control signal applied to the triac Tr1 of the electric circuit unit 100. Recognizing it as one operation signal while increasing the duty ratio, if the one operation signal is rapidly increased than the previous one operation signal, the time is recognized as the point when TDC is '0' and the triac (Tr1) is the switching control signal at that time. ) To control the operation of L.COMP.

이상에서 상세히 설명한 바와같이 본 발명은 리니어 컴프레샤 운전시, 기구적인 특성에 의한 비선형적특성을 감지하기 하기 위해, 입력전류와 변위의 크기의 곱을 적분하여 구한 일연산값을 인식하여 그 일연산값의 크기의 변화량으로 스트로크를 제어함으로써, 비선형적 특성에 의한 오차도 감안하여 피스톤의 티디씨 제어가 가능하고, 이로 인해 리니어 컴프레샤의 운전 효율을 향상시키는 효과가 있다.As described in detail above, in the present invention, in order to detect nonlinear characteristics due to mechanical characteristics during linear compressor operation, the present invention recognizes the daily operation value obtained by integrating the product of the input current and the magnitude of the displacement, By controlling the stroke by the amount of change in size, it is possible to control the TCD of the piston in consideration of the error due to the nonlinear characteristic, thereby improving the operation efficiency of the linear compressor.

Claims (5)

스트로크 지령치에 따른 스트로크 전압에 의해, 피스톤이 상하운동으로 스트로크를 가변시켜 냉력을 조절하는 리니어 컴프레샤와; 스트로크 전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤에 발생하는 전압을 검출하는 전압검출부와; 스트로크전압에 의해 스트로크를 증가시킴에 따라, 상기 리니어 컴프레샤에 인가되는 전류를 검출하는 전류 검출부와; 상기 전압검출부 및 전류 검출부로부터 검출된 전압과 전류로 변위를 계산하는 변위계산부와; 상기 변위계산부의 변위와 상기 전류검출부의 전류를 입력받아 이를 소정 연산하여 그에 따른 일연산신호를 출력하는 일연산부와; 상기 일연산부의 일연산신호를 입력받아 이를 이전 일연산신호와 비교하여 그에 따른 스위칭제어신호를 출력하는 마이크로컴퓨터와; 상기 마이크로컴퓨터의 스위칭제어신호에 따라, 교류전원을 트라이악으로 단속시켜 상기 리니어컴프레샤에 스트로크전압을 인가하는 전기회로부를 포함하여 구성한 것을 특징으로 하는 리니어 컴프레샤의 운전제어장치.A linear compressor for controlling the cooling force by varying the stroke in the vertical movement by the stroke voltage according to the stroke command value; A voltage detector for detecting a voltage generated in the linear compressor as the stroke is increased by the stroke voltage; A current detector for detecting a current applied to the linear compressor as the stroke is increased by the stroke voltage; A displacement calculator for calculating displacements from the voltage and current detected by the voltage detector and the current detector; A one operation unit which receives the displacement of the displacement calculation unit and the current of the current detection unit, calculates the predetermined operation, and outputs a corresponding one operation signal; A microcomputer which receives the one operation signal of the one operation unit and compares it with a previous one operation signal and outputs a switching control signal accordingly; And an electric circuit section for interrupting an AC power supply with a triac according to the switching control signal of the microcomputer and applying a stroke voltage to the linear compressor. 제1 항에 있어서, 일연산부는 입력전류와 변위를 승산한후, 그 승산값을 적분하여 그 적분값을 일연산신호를 출력하는 것을 특징으로 하는 리니어 컴프레샤의 운전제어장치.The linear compressor operation control apparatus according to claim 1, wherein the multiplication unit multiplies the input current and the displacement, integrates the multiplication value, and outputs the integral value to the integral value. 제1 항에 있어서, 마이크로컴퓨터는 일연산부의 일연산신호가 순차적으로 저장되는 메모리를 포함하는 것을 특징으로 하는 리니어 컴프레샤의 운전제어장치.The apparatus of claim 1, wherein the microcomputer includes a memory in which one operation signal of the one operation unit is sequentially stored. 제1 항 또는 제3 항에 있어서, 마이크로컴퓨터는 현재 일연산신호를 이전 일연산신호와 비교하여 그 차이가 소정값 이하이면 스위칭제어신호를 점차 증가시켜 출력하다가, 현재 일연산신호와 이전 일연산신호의 차이가 소정값 이상이 되면 현 시점의 스위칭제어신호를 유지시켜 출력하는 것을 특징으로 하는 리니어 컴프레샤의 운전제어장치.[4] The microcomputer of claim 1 or 3, wherein the microcomputer compares the current daily operation signal with the previous one, and gradually increases and outputs the switching control signal if the difference is less than a predetermined value. And operating the switching control signal at the present time when the signal difference is greater than or equal to a predetermined value. 제4 항에 있어서, 현재 일연산신호와 이전 일연산신호의 차이가 소정값 이상이 되는 시점이 TDC가 '0'인 지점인 것을 특징으로 하는 리니어 컴프레샤의 운전제어장치.The linear compressor operation control apparatus according to claim 4, wherein the time point at which the difference between the present day operation signal and the previous day operation signal becomes a predetermined value or more is a point where the TDC is '0'.
KR10-2000-0071657A 2000-11-29 2000-11-29 Driving control apparatus for linear compressor KR100382919B1 (en)

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KR10-2000-0071657A KR100382919B1 (en) 2000-11-29 2000-11-29 Driving control apparatus for linear compressor
US09/989,421 US6537034B2 (en) 2000-11-29 2001-11-21 Apparatus and method for controlling operation of linear compressor
BRPI0105454-6A BR0105454B1 (en) 2000-11-29 2001-11-27 APPARATUS AND METHOD FOR CONTROLING LINEAR COMPRESSOR OPERATION
CNB011424486A CN1325797C (en) 2000-11-29 2001-11-28 Equipment and method for controlling operation of linear compressor
JP2001364898A JP4567256B2 (en) 2000-11-29 2001-11-29 Operation control apparatus and method for linear compressor

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100393803B1 (en) * 2001-06-29 2003-08-02 엘지전자 주식회사 Driving comtrol apparatus for reciprocating compressor
KR100393807B1 (en) * 2001-07-31 2003-08-02 엘지전자 주식회사 Driving comtrol apparatus for reciprocating compressor
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