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KR101011846B1 - Method for Monitoring a Torsional Vibration Damper - Google Patents

Method for Monitoring a Torsional Vibration Damper Download PDF

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KR101011846B1
KR101011846B1 KR1020060044035A KR20060044035A KR101011846B1 KR 101011846 B1 KR101011846 B1 KR 101011846B1 KR 1020060044035 A KR1020060044035 A KR 1020060044035A KR 20060044035 A KR20060044035 A KR 20060044035A KR 101011846 B1 KR101011846 B1 KR 101011846B1
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torsional
connecting portion
rotating mass
elastic
vibration damper
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KR1020060044035A
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Korean (ko)
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KR20060119788A (en
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펠릭스 마르티네크
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엘레르곤 안트리에브스테크니크 게엠베하
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/109—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving measuring phase difference of two signals or pulse trains
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0021—Torsional
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0288—Springs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

축에 부착가능한 연결부(2)와, 이 연결부(2)에 회전 탄성방식으로 연결되는 탄성 회전질량체(3)를 가지는 비틀림진동 댐퍼를 감시하는 방법이 기술되고, 연결부(2)와 탄성 회전질량체(3) 둘 다의 회전각은 계산단(8)에서 디지털적으로 측정되고 또한 변환되어 특성값을 출력한다. 유리한 감시상태를 보장하기 위하여, 동시에 측정한 연결부(2)와 탄성 회전질량체(3)의 회전각들로부터, 연결부(2)의 각속도의 변화를 고려하면서 이들 두 부품(2, 3)들 간의 상대 비틀림 각도와 탄성 회전질량체(3)의 회전 각 가속도를 확정하고, 또한 탄성 회전질량체(3)의 구조적으로 규정된 내부의 질량 모멘트의 도움으로, 특성값들로서 비틀림 강성과 비틀림 댐핑을 계산하고 또한 이들을 디스플레이하는 것을 제안한다.A method of monitoring a torsional vibration damper having a connecting portion (2) attachable to a shaft and an elastic rotating mass (3) connected to the connecting portion (2) in a rotational elastic manner is described. The connecting portion (2) and the elastic rotating mass ( 3) Both rotation angles are digitally measured at the calculating stage 8 and converted to output characteristic values. In order to ensure an advantageous monitoring state, the relative relation between these two parts (2, 3), taking into account the change in the angular velocity of the connection (2) from the rotation angles of the joint (2) and the elastic rotating mass (3) measured simultaneously To determine the torsion angle and the rotation angle acceleration of the elastic rotating mass 3, and also with the aid of the structurally defined internal mass moment of the elastic rotating mass 3, calculate the torsional stiffness and torsional damping as characteristic values and also Suggest displaying.

비틀림 강성, 비틀림 댐핑, 댐퍼, 회전각, 각속도, 각 가속도 Torsional rigidity, torsional damping, damper, rotation angle, angular velocity, angular acceleration

Description

비틀림진동 댐퍼를 감시하는 방법{Method for Monitoring a Torsional Vibration Damper}Method for Monitoring a Torsional Vibration Damper}

도 1은 비틀림진동 댐퍼를 위한 감시유닛을 개략적인 블럭도로 보여주는 도면.1 shows a schematic block diagram of a monitoring unit for a torsional vibration damper;

도 2는 비틀림진동 댐퍼의 전면에서 본 감시유닛을 보여주는 도면.Figure 2 shows a monitoring unit seen from the front of the torsional vibration damper.

본 발명은 축에 부착가능한 연결부와, 회전 탄성방식으로 연결부에 연결되는 탄성회전 질량체를 가지는 비틀림진동 댐퍼를 감시하는 방법에 관한 것으로서, 연결부와 탄성회전 질량체의 회전각은 디지털적으로 측정하여, 계산단에서 변환되어 그 변환된 값을 특성값으로서 출력한다.The present invention relates to a method for monitoring a torsional vibration damper having a connecting portion attachable to an axis and an elastic rotating mass connected to the connecting portion in a rotationally elastic manner, wherein the rotation angles of the connecting portion and the elastic rotating mass are digitally measured and calculated. Converted at the stage and outputs the converted value as a characteristic value.

내연기관을 가지는 구동렬(drivetrains)에서와 같이 비틀림진동이 발생하는 구동렬에서, 비틀림진동을 제한하고 또한 비틀림 교대응력(alternating stress)로 인해 발생하는 구동부들의 응력변형(strain)을 허용가능한 량으로 제한하는 비틀림진동 댐퍼를 사용한다. 따라서, 진동댐퍼의 약화되지 않은 기능(unimpaired function)은 이와 같은 구동렬에 큰 영향을 미쳐, 적어도 몇몇 경우에 있어서, 비틀림진동 댐퍼를 지속적으로 감시한다. 이러한 목적을 위해, 구동렬들의 비틀림 교대응력에 대한 특성값으로서, 비틀림 각, 즉 크랭크-축 상에 플랜지된 비틀림진동 댐퍼의 연결부의 진폭을 측정하고 또한 측정한 값을, 규정된 허용가능한 가장 큰 값과 비교하는 것이 공지되어 있다(AT 396 633B). 이외에도, 비틀림진동 댐퍼의 연결부와 탄성 회전질량체의 상호 비틀림을 감시하여 이들 부품들 간에 회전-탄성 연결을 감시할 수 있다. 비틀림 각의 측정은 비틀림 진동 댐퍼의 연결부와 탄성 회전질량체의 디지털 회전스텝의 검출을 기반으로 쉽게 이루어질 수 있지만, 규정된 한계값에 측정한 비틀림 각의 비교는, 계획된 많은 사용에 필요한 정밀도로 비틀림진동 댐퍼를 감시할 수 있도록 하지는 못하는데, 이는 이와 같은 감시를 위해 특정한 비틀림강성(torsional rigidity)과 비틀림댐핑을 아는 것이 필요하기 때문이다. 비틀림진동 댐퍼의 비틀림강성은 전달된 토크의 측정치와 그리고 연결부와 이 연결부에 회전 탄성방식으로 연결되는 탄성 회전질량체 간의 상대 비틀림 각으로부터 계산하는 것이 이미 제안되어 있지만, 디지털 회전스텝과 동기로, 응력변형 게이지(strain gauge)를 통해 토크부하를 측정하는 것이 어렵다. 게다가, 필요한 신호전송을 고려하면서 응력변형 게이지를 사용하는 것은 상당한 비용지출로만 가능하고, 또한 이외에도, 비틀림진동 댐퍼에서 제한된 방식으로만 가능하다.In drive trains where torsional vibrations occur, such as in drivetrains with internal combustion engines, limiting torsional vibrations and also limiting the strain of the drives generated by torsional alternating stresses to an acceptable amount. Use torsional vibration dampers. Thus, the unpaired function of the vibration damper has a great effect on such drive trains and, at least in some cases, continuously monitors the torsional vibration damper. For this purpose, as a characteristic value for the torsional alternating stresses of the drive trains, the torsion angle, i.e. the amplitude of the connection of the torsional vibration damper flanged on the crank-axis, is also measured, and the value determined is the largest allowable value. It is known to compare with (AT 396 633B). In addition, the rotational-elastic connection between these components can be monitored by monitoring the mutual twisting of the connection of the torsional vibration damper and the elastic rotating mass. Although the measurement of the torsion angle can be easily made based on the detection of the connection of the torsional vibration damper and the digital rotation step of the elastic rotating mass, the comparison of the torsion angle measured at the specified limit value is the torsional vibration with the precision required for many planned uses. It is not possible to monitor the damper because it requires knowing the specific torsional rigidity and torsional damping. The torsional stiffness of the torsional vibration damper has already been proposed to be calculated from the measured value of the transmitted torque and the relative torsional angle between the connecting part and the elastic rotating mass connected to the connecting part in a rotationally elastic manner, but in synchronism with the digital rotating step, the strain It is difficult to measure torque load through a strain gauge. In addition, the use of strain gauges in consideration of the required signal transmission is only possible with significant cost expenditure, but also in a limited way in torsional vibration dampers.

그러므로, 본 발명은, 비교적 낮은 비용으로 감시를 위해 특성값들로서, 비틀림진동 댐퍼의 비틀림 강성과 비틀림 댐핑을 필요한 정밀도로 검출할 수 있도록, 시초에 상기에서 기술한 유형의 비틀림진동 댐퍼를 감시하는 방법을 구현하는 목적 을 기반으로 한다.Therefore, the present invention provides a method for monitoring the torsional vibration damper of the type described above in order to detect the torsional stiffness and torsional damping of the torsional vibration damper as the required values at a relatively low cost. Is based on the purpose of implementing it.

본 발명의 상기의 목적을 달성하기 위한 수단으로서, 축에 부착가능한 연결부와, 회전 탄성방식으로 상기 연결부에 연결되는 탄성회전 질량체를 가지는 비틀림진동 댐퍼를 감시하고, 상기 연결부와 상기 탄성 회전 질량체의 회전각들은 계산단에서 디지털적으로 측정되고, 변환되며, 이와 같이 변환된 값을 특성값으로서 출력하게 되는 비틀림진동 댐퍼를 감시하는 방법으로서, 동시에 측정한 연결부와 탄성 회전질량체의 회전각들로부터, 연결부의 각속도의 변화를 고려하면서 상기 연결부와 상기 탄성 회전질량체 사이의 상대 비틀림 각도와 탄성 회전질량체의 회전 각 가속도를 확정하고, 또한 탄성 회전질량체의 구조적으로 규정된 내부의 질량 모멘트의 도움으로, 비틀림 강성과 비틀림 댐핑을 계산하고 이와 같이 계산된 것을 상기 특성값으로 정하여 디스플레이하는 비틀림진동 댐퍼를 감시하는 방법을 제공한다.As a means for achieving the above object of the present invention, a torsional vibration damper having a connecting portion attachable to the shaft and an elastic rotating mass connected to the connecting portion in a rotational elastic manner, the rotation of the connecting portion and the elastic rotating mass The angles are measured digitally at the calculation stage and converted, and the method of monitoring the torsional vibration damper which outputs the converted values as characteristic values, from the measured joints and the rotation angles of the elastic rotating mass, The relative torsion angle between the connecting portion and the elastic rotational mass and the rotation angle acceleration of the elastic rotational mass are determined while taking into account the change in the angular velocity of the torsional force, and the torsional rigidity is supported by the structurally defined internal mass moment of the elastic rotational mass. And torsional damping are calculated and calculated as the characteristic values. It provides a method for monitoring the torsional vibration damper to display.

본 발명은 다음과 같이 진행된다. 충분히 정밀하게 동기화된, 연결부와 탄성 회전질량체의 회전각들의 측정으로, 비틀림진동 댐퍼의 이들 두 부품들 간의 상대 비틀림 각도를 공지된 방식으로 계산할 수 있을 뿐 아니라, 탄성 회전질량체의 회전 각 가속도와 내부의 질량 모멘트 간에 공지된 연결로부터 특정 활성 토크를 계산하기 위하여 부수적으로 탄성 회전질량체의 특정 회전 각 가속도를 계산할 수 있고, 이는 측정순간에 주어진 비틀림진동 댐퍼의 연결부와 탄성 회전질량체 간의 비틀림 각의 함수로 사용되어 계산단에서 비틀림진동 댐퍼의 비틀림 강성과 비틀림 댐핑을 계산하는데 사용될 수 있고, 이러한 특성값들의 계산된 실제값들을 디스플레이 유닛에 출력한다.The present invention proceeds as follows. By measuring the rotation angles of the connection and the elastic rotating mass, which are synchronized with sufficient precision, the relative twist angle between these two parts of the torsional vibration damper can be calculated in a known manner, as well as the rotation angle acceleration and internal rotation angle of the elastic rotating mass. In order to calculate a specific active torque from the known connection between the mass moments of, the specific rotational angular acceleration of the elastic rotating mass can additionally be calculated, which is a function of the torsional angle between the connection of the torsional vibration damper and the elastic rotating mass given at the instant of measurement. It can be used to calculate the torsional stiffness and torsional damping of the torsional vibration damper at the calculation stage, and output the calculated actual values of these characteristic values to the display unit.

비틀림 강성과 비틀림 댐핑을 결정하는 것은, 비틀림 진동에 관련되는 회전각과 각속도의 정밀하고 동기화된 검출을 필요로 하기 때문에, 측정 신호들로부터 대응하는 주파수들을 필터링하기 위하여 측정 신호들의 주파수 분석을 기초로 수행될 수 있는, 구동축의 속도 증가로 인한 대응하는 영향을 고려하여야만 한다. 그러나, 이 목적을 위해 사용되는 필터들은, 계산단에서 측정결과를 분석하기 위해 필 요한 신호성분들의 위상변이를 일으키기 않는다.Determining torsional stiffness and torsional damping requires precise and synchronized detection of the rotational angle and angular velocity related to the torsional vibration, so it is performed based on the frequency analysis of the measurement signals to filter the corresponding frequencies from the measurement signals. Consideration should be given to the corresponding effects due to the increase in speed of the drive shaft. However, the filters used for this purpose do not cause the phase shift of the signal components necessary for analyzing the measurement result in the calculation stage.

첨부도면을 기초로 하여, 비틀림진동 댐퍼를 감시하기 위한 본 발명에 따른 방법을 보다 상세히 설명하면 다음과 같다.Based on the accompanying drawings, the method according to the present invention for monitoring the torsional vibration damper is described in more detail as follows.

도 1로부터 알 수 있듯이, 비틀림진동 댐퍼는 내연기관의 크랭크축(1)에 부착되는 연결부(2)와, 회전 탄성방식으로 상기 연결부(2)에 연결되는 탄성 회전질량체(3)를 가진다. 회전-탄성 연결(4)은 토션 스프링의 형태로 나타나 있지만, 다양한 방식으로 구성할 수 있다. 이는 탄성 회전질량체(3)에 대한 연결부(2)의 탄성-회전 연결(4)은 여기에서 중요하지 않고, 차라리 비틀림 강성과 비틀림 댐핑을 기반으로 비틀림진동 댐퍼의 기능적 신뢰도를 감시하는 것이 중요하기 때문인데, 이는 특정 비틀림진동 댐퍼의 구조적 실시예와는 크게 관계가 없다. 비틀림진동 댐퍼의 이들 특성값들을 또한 비틀림진동 댐퍼의 사용 동안에 지속적으로 감시하여 그의 기능적 신뢰도를 감시할 수 있다.As can be seen from FIG. 1, the torsional vibration damper has a connecting portion 2 attached to the crankshaft 1 of the internal combustion engine and an elastic rotating mass 3 connected to the connecting portion 2 in a rotationally elastic manner. The rotation-elastic connection 4 is shown in the form of a torsion spring, but can be configured in a variety of ways. This is because the elastic-rotating connection 4 of the connection 2 to the elastic rotating mass 3 is not important here, but rather it is important to monitor the functional reliability of the torsional vibration damper based on the torsional rigidity and torsional damping. This has little to do with the structural embodiment of the particular torsional vibration damper. These characteristic values of the torsional vibration damper can also be monitored continuously during the use of the torsional vibration damper to monitor its functional reliability.

비틀림진동 댐퍼의 특정 구조적 실시예와의 무관성은, 연결부(2)와 탄성 회전질량체(3)의 회전각들을, 연결부(2) 및/또는 탄성 회전질량체(3)의 주변원을 따라 접촉없이 증분 스케일(incremental scale)(6)을 스캔하는 센서(5)들의 도움으로 동기로 검출함으로써 이루어진다. 특히 도 2로부터 알 수 있듯이, 증분 스케일(6)들은, 특정 회전각과 이의 함수로서 특정 각속도를 결정하기 위해 관련 센서(5)를 지나 연결부(2) 및/또는 탄성 회전질량체(3)가 회전할 때 개별적으로 또는 광전자적으로 스캔될 수 있는, 증분을 결정하는 반경방향 돌출 이빨(7)로써 형성된다. 각 가속도들과 탄성 회전질량체(3)의 규정된 내부의 질량 모멘트의 도움으로 활성 토크를 결정하기 위하여, 특정 비틀림진동에 관련되는 회전 각 가속도는 규정된 분석프로그램의 도움으로 센서(5)에 연결된 계산단(8)에서 탄성 회전질량체(3)에 대한 측정신호로부터 결정된다. 소정의 회전 각 가속도 뿐만 아니라, 연결부(2)와 탄성 회전질량체(3) 간의 상대 비틀림을 회전각 및/또는 각속도를 통해 검출할 수 있기 때문에, 비틀림진동 댐퍼의 비틀림 강성과 비틀림 댐핑은, 비틀림 각도와 활성 토크가 동기로 검출된다는 조건하에서만, 연결부(2)와 탄성 회전질량체(3) 간의 상대 비틀림 각도와 토크 간의 물리적 연결을 기반으로 계산할 수 있다. 그러나, 비틀림진동 댐퍼의 유리한 감시를 위해 사용할 수 있는, 비틀림진동 댐퍼의 비틀림 강성과 비틀림 댐핑을 사용하여 특성값들을 얻을 수 있다. 이 목적을 위해, 계산단(8)은 디스플레이유닛(9)에 연결되고, 필요하다면 이를 통해 구동렬을 제어기가 결합될 수 있다.The independence of certain structural embodiments of the torsional vibration damper is such that the angles of rotation of the connecting part 2 and the elastic rotating mass 3 can be incrementally increased without contact along the peripheral source of the connecting part 2 and / or the elastic rotating mass 3. This is achieved by synchronous detection with the aid of the sensors 5 scanning the incremental scale 6. As can be seen in particular from FIG. 2, the incremental scales 6 may be rotated past the connection 2 and / or the elastic rotating mass 3 through the associated sensor 5 to determine a particular rotation angle and a specific angular velocity as a function thereof. It is formed as radially protruding teeth 7 which determine an increment when it can be scanned individually or photoelectrically. In order to determine the active torque with the aid of the angular accelerations and the defined internal mass moment of the elastic rotating mass 3, the rotational angular acceleration associated with the specific torsional vibration is connected to the sensor 5 with the aid of the prescribed analysis program. It is determined from the measurement signal for the elastic rotating mass 3 at the calculation stage 8. As well as the predetermined rotational angle acceleration, the relative torsion between the connecting portion 2 and the elastic rotating mass 3 can be detected through the rotational angle and / or the angular velocity, so that the torsional rigidity and the torsional damping of the torsional vibration damper are the torsional angles. And only under the condition that the active torque is detected synchronously, it can be calculated on the basis of the physical connection between the torque and the relative twist angle between the connecting portion 2 and the elastic rotating mass 3. However, the torsional stiffness and torsional damping of the torsional vibration damper, which can be used for advantageous monitoring of the torsional vibration damper, can be used to obtain the characteristic values. For this purpose, the calculating stage 8 is connected to the display unit 9, through which a controller can be coupled to the drive train if necessary.

이상에서 설명한 바와 같은 구성으로서, 본 발명은, 비교적 낮은 비용으로 감시를 위해 특성값들로서, 비틀림진동 댐퍼의 비틀림 강성과 비틀림 댐핑을 필요한 정밀도로 검출할 수 있게 된다.As a configuration as described above, the present invention can detect the torsional rigidity and torsional damping of the torsional vibration damper with the required precision as characteristic values for monitoring at a relatively low cost.

Claims (1)

축에 부착가능한 연결부와, 회전 탄성방식으로 상기 연결부에 연결되는 탄성회전 질량체를 가지는 비틀림진동 댐퍼를 감시하고, 상기 연결부와 상기 탄성 회전 질량체의 회전각들은 계산단에서 디지털적으로 측정되고, 변환되어, 이와 같이 변환된 것을 특성값으로서 출력하게 되는 비틀림진동 댐퍼를 감시하는 방법에 있어서, A torsional vibration damper having a connecting portion attachable to the shaft and an elastic rotating mass connected to the connecting portion in a rotationally elastic manner, wherein the rotation angles of the connecting portion and the elastic rotating mass are digitally measured and converted at the calculation stage In the method for monitoring the torsional vibration damper which outputs the converted value as a characteristic value, 동시에 측정한 연결부(2)와 탄성 회전질량체(3)의 회전각들로부터, 연결부(2)의 각속도의 변화를 고려하면서 상기 연결부(2)와 상기 탄성 회전질량체(3) 사이의 상대 비틀림 각도와 탄성 회전질량체(3)의 회전 각 가속도를 확정하고, 또한 탄성 회전질량체(3)의 구조적으로 규정된 내부의 질량 모멘트의 도움으로, 비틀림 강성과 비틀림 댐핑을 계산하고 이와 같이 계산된 것을 상기 특성값으로 정하여 디스플레이하는 것을 특징으로 하는, 비틀림진동 댐퍼를 감시하는 방법.From the rotation angles of the connecting portion 2 and the elastic rotating mass 3 measured at the same time, taking into account the change in the angular velocity of the connecting portion 2, the relative twist angle between the connecting portion 2 and the elastic rotating mass 3 and The torsional angular acceleration of the elastic rotational mass 3 is determined, and with the aid of the structurally defined internal mass moment of the elastic rotational mass 3, the torsional stiffness and the torsional damping are calculated and thus calculated Method for monitoring the torsional vibration damper, characterized in that the display to determine.
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