KR20030004147A - ball screw magnetorheological damper - Google Patents

ball screw magnetorheological damper Download PDF

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Publication number
KR20030004147A
KR20030004147A KR1020020053645A KR20020053645A KR20030004147A KR 20030004147 A KR20030004147 A KR 20030004147A KR 1020020053645 A KR1020020053645 A KR 1020020053645A KR 20020053645 A KR20020053645 A KR 20020053645A KR 20030004147 A KR20030004147 A KR 20030004147A
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South Korea
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rotary
ball screw
brake
vibration
attenuator
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KR1020020053645A
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Korean (ko)
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강성덕
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강성덕
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Priority to KR1020020053645A priority Critical patent/KR20030004147A/en
Publication of KR20030004147A publication Critical patent/KR20030004147A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535—Magnetorheological [MR] fluid dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/1207—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by the supporting arrangement of the damper unit
    • F16F15/1208—Bearing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00—Materials; Material properties
    • F16F2224/04—Fluids
    • F16F2224/045—Fluids magnetorheological

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Transmission Devices (AREA)
  • Vibration Prevention Devices (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

PURPOSE: An MR(magneto-rheological) damper combined with a ball screw is provided to absorb vibration by adjusting the size of a ball screw lead without adjusting current of a power supply unit. CONSTITUTION: A ball screw magneto-rheological damper is composed of a rotary MR damper or MR brake(1) for semi-active control; a ball screw(2) converting linear motion into rotation, or rotation into linear motion; a ball nut(3); a telescoping mechanism(4,5) of Acme screw structure; a power supplier connected to the rotary MR damper or MR brake; and a semi-active control circuit(6). Vibration and impact are absorbed automatically with torque in driving the rotary MR damper or MR brake.

Description

볼 스크류 MR 감쇄기{ball screw magnetorheological damper}Ball screw magnetorheological damper

본 발명은 구조 설계상 볼 스크류ㆍ너트 메커니즘을 이용한 볼 스크류 액추에이터(actuator)식 진동저감장치이다. 기존의 진동저감장치나 충격흡수장치는 직선운동을 회전운동으로 혹은 회전운동을 직선운동으로 효율적으로 원활하게 변환할 수 있는 볼 스크류ㆍ너트 메커니즘을 결합한 와류형 댐퍼(eddy current damper), 전자기식 액추에이터(actuator), 또는 관성형 충격흡수장치(inertia damper)의 형태로 각각 설계되어 왔다. 이에 관련된 종래의 기술로는 미국특허공고 제 5,775,469호, 미국특허공고 제5,348,124호, 독일특허공고 제 3,522,221호에서 공개된 것이 있다. 또한 회전식 자기유변유체 진동저감장치 기술로는 미국특허공고 제 6,186,290호, 제5,896,964호 등에서 공개된 것이 있다.The present invention is a ball screw actuator vibration reduction device using a ball screw nut mechanism in structural design. Conventional vibration reducing devices or shock absorbers are eddy current dampers and electromagnetic actuators combined with ball screw and nut mechanisms that can efficiently convert linear motion into rotary motion or linear motion efficiently. Each has been designed in the form of an actuator or an inertia damper. Conventional techniques related to this are disclosed in US Patent Publication No. 5,775,469, US Patent Publication No. 5,348,124, and German Patent Publication No. 3,522,221. In addition, the rotating magnetorheological fluid vibration reduction device technology is disclosed in US Patent Publication Nos. 6,186,290, 5,896,964 and the like.

본 발명은 공개된 일반구조형태 또는 특별히 설계된 구조형태를 갖는 회전식 자기유변유체 감쇄기(rotary MR damper) 또는 회전식 자기유변유체 브레이크(rotary MR brake)를 볼 스크류와 직접(in-line) 결합하여 선형운동형 진동저감장치를 구현하는 것이다.The present invention provides a linear motion by combining a rotary MR damper or a rotary MR brake having a general structure or a specially designed structure in-line with a ball screw in-line. Type vibration reduction device.

볼 스크류는 회전운동을 선형운동으로 또는 선형운동을 회전운동으로 변환할 뿐만 아니라, 기계식 증폭기(mechanical amplifier) 역할을 하기 때문에 작은 용량의 진동 흡수력이 이를 통하여 크게 증폭된다.The ball screw not only converts rotational motion into linear motion or linear motion into rotational motion, but also acts as a mechanical amplifier, so that a small amount of vibration absorption capacity is amplified.

또한 전원공급장치의 전류를 조정하지 않고 독립적으로 볼 스크류 리드(lead)의 크기를 조정함으로써 다양한 진동 흡수력을 얻을 수 있는 장점이 있다.In addition, by adjusting the size of the ball screw lead independently without adjusting the current of the power supply has the advantage that can be obtained a variety of vibration absorption.

본 발명은 외부로부터의 충격이나 진동에 의한 진동저감장치의 선형운동이 볼 스크류(2)ㆍ너트(3)를 통해 회전식 자기유변유체 감쇄기(rotary MR damper) 또는 회전식 자기유변유체 브레이크(rotary MR brake)를 빠른 회전운동으로 구동시킬 때, 회전식 자기유변유체 감쇄기(rotary MR damper) 또는 회전식 자기 유변유체 브레이크(rotary MR brake)에서 발생되는 회전력(torque)이 동시에 진동ㆍ충격 흡수력으로 작용하여 외부 진동ㆍ충격을 자동적으로 흡수하고 시스템의 진동을 억제한다.According to the present invention, the linear motion of the vibration reducing device due to external shock or vibration is transmitted through a rotary MR damper or a rotary MR brake through a ball screw 2 and a nut 3. ) Is driven by a rapid rotational movement, the torque generated by the rotary MR damper or rotary MR brake acts as a vibration and shock absorbing force at the same time. Automatically absorbs shock and suppresses system vibration

본 발명에서 구현하고자 하는 볼스크류 자기유변유체 진동저감장치(ball screw magnetorheological damper)는 구조면에서 다음의 세 가지 주요 부품으로 구성된다. 첫째, 준 능동제어를 위한 회전식 MR 감쇄기 또는 MR 브레이크(1), 둘째, 직선운동을 회전운동으로 혹은 회전운동을 직선운동으로 효율적으로 원활하게 변환할 수 있는 볼 스크류(ball screw) (2)ㆍ볼 너트(ball nut)(3) 또는 유사기능의 부품(Acme screw) 구조의 결합인 텔리스코핑(telescoping) 메커니즘(mechanism)(4, 5), 셋째, 회전식 MR 감쇄기 또는 MR 브레이크(1)에 연결되는 전원공급장치(power supplier)와 제어회로(semi-active control circuit)(6)로 구성되어 있다.The ball screw magnetorheological damper to be implemented in the present invention is composed of the following three main components in terms of structure. First, a rotary MR attenuator or MR brake (1) for semi-active control, and second, a ball screw (2) capable of efficiently and smoothly converting linear motion into rotary motion or linear motion into linear motion. To a telescoping mechanism (4, 5), a combination of a ball nut (3) or similar screw structure (3), third, to a rotary MR attenuator or MR brake (1) It consists of a power supplier and a semi-active control circuit 6.

본 발명은 외부로부터의 충격이나 진동에 의한 진동저감장치의 선형운동이 볼 스크류(hall screw)(2)ㆍ너트(ball nut)(3)를 통해 회전식 MR 감쇄기 또는 MR 브레이크(1)를 빠른 회전운동으로 구동시킬 때 회전식 MR 감쇄기 또는 MR 브레이크(1)에서 발생되는 힘(torque)이 진동ㆍ충격 흡수력으로 작용하여 외부 진동ㆍ충격을 자동적으로 흡수하고 시스템의 진동을 억제한다.According to the present invention, the linear motion of the vibration reducing device due to external shock or vibration causes the rotary MR attenuator or MR brake 1 to be rapidly rotated through a ball screw 2 and a nut 3. When driven by motion, the torque generated by the rotary MR attenuator or MR brake 1 acts as a vibration and shock absorbing force to automatically absorb external vibrations and shocks and to suppress vibration of the system.

볼 스크류에 결합되는 회전식 MR 장치는 공개된 일반구조형태 또는 특별히 설계된 구조형태를 가지며, 회전식 MR 감쇄기 또는 MR 브레이크(1)에서 발생되는 힘(torque)은 연결된 전원공급장치(6)의 전류를 수동으로 또는 자동으로 조정하여다양하게 얻어지며, 실시간으로 조정될 수 있다.The rotary MR device coupled to the ball screw has a known general structure or a specially designed structure, and the torque generated by the rotary MR attenuator or MR brake 1 can be used to manually control the current of the connected power supply 6. It can be adjusted in various ways or automatically and can be adjusted in real time.

본 발명에서 구현하고자 하는 볼스크류 자기유변유체 진동저감장치(ball screw magnetorheological damper)는 구조면에서 다음의 세 가지 주요 부품으로 구성된다. 첫째, 준 능동제어를 위한 회전식 MR 감쇄기 또는 MR 브레이크(1), 둘째, 직선운동을 회전운동으로 혹은 회전운동을 직선운동으로 효율적으로 원활하게 변환할 수 있는 볼 스크류(ball screw) (2)ㆍ볼 너트(ball nut)(3) 또는 유사기능의 부품(Acme screw) 구조의 결합인 텔리스코핑(telescoping) 메커니즘(mechanism)(4, 5), 셋째, 회전식 MR 감쇄기 또는 MR 브레이크(1)에 연결되는 전원공급장치(power supplier)와 제어회로(semi-active control circuit)(6)로 구성되어 있다.The ball screw magnetorheological damper to be implemented in the present invention is composed of the following three main components in terms of structure. First, a rotary MR attenuator or MR brake (1) for semi-active control, and second, a ball screw (2) capable of efficiently and smoothly converting linear motion into rotary motion or linear motion into linear motion. To a telescoping mechanism (4, 5), a combination of a ball nut (3) or similar screw structure (3), third, to a rotary MR attenuator or MR brake (1) It consists of a power supplier and a semi-active control circuit 6.

도 1에 예시된 바와 같이, 볼 너트(ball nut)(3)는 텔리스코핑 축(telescoping rod)(4)에 부착되어 볼 스크류(2)의 홈을 따라 좌우로 선형운동을 하며, 바깥 고정용 지지 실린더(support cylinder)(5)안에 자리잡고 있다.As illustrated in FIG. 1, a ball nut 3 is attached to a telescoping rod 4 to linearly move from side to side along the groove of the ball screw 2, for external fixing. It is located in the support cylinder 5.

볼 너트(ball nut)(3)의 선형운동에 의해 시계방향 또는 반시계 방향으로 회전하는 볼 스크류(ball screw)(2)는 한쪽 부분이 베어링(thrust bearing)(7)에 의해 지지되고 지지된 볼 스크류(ball screw)(2)의 하단 부분은 회전축을 이루며 그 끝 부분은 회전식 MR 감쇄기 또는 MR 브레이크(1)의 회전축에 직접 직선으로(in-line) 연결되거나 커플링 또는 유사부품에 의해 연결되어 볼 스크류(ball screw)(2)의 회전 시 회전식 MR 감쇄기 또는 MR 브레이크(1)를 동시에 빠른 속도로 회전시킨다.The ball screw 2, which rotates clockwise or counterclockwise by the linear motion of the ball nut 3, has one side supported and supported by a thrust bearing 7 The lower part of the ball screw (2) forms the axis of rotation, the end of which is connected in-line directly to the axis of rotation of the rotary MR attenuator or MR brake (1) or by a coupling or similar part. When the ball screw (2) is rotated to rotate the rotary MR attenuator or MR brake (1) at the same time at a high speed.

회전식 MR 감쇄기 또는 MR 브레이크(1)는 공개된 일반구조형태 또는 특별히 설계된 구조형태로 케이스(case) 내에 장착되고 회전식 MR 감쇄기 또는 MR 브레이크(1)는 그 케이스의 지지 부분에 고정ㆍ부착된다.The rotary MR attenuator or MR brake 1 is mounted in a case in the form of a general structure or a specially designed structure, and the rotary MR attenuator or MR brake 1 is fixed and attached to the supporting portion of the case.

전류의 세기를 조정함으로서 다양한 크기의 회전력을 얻기 위하여 전원공급장치(power supplier)와 제어회로(semi-active control circuit)(6)가 회전식 MR 감쇄기 또는 MR 브레이크에 연결된다.A power supplier and a semi-active control circuit 6 are connected to a rotary MR attenuator or MR brake to adjust the strength of the current to achieve varying magnitudes of torque.

도 1에서 보는 바와 같이, 본 발명의 작동은 외부로부터의 충격이나 진동으로 텔리스코핑 축 (telescoping rod)(4)의 선형운동이 볼 스크류(ball screw)(2)와 너트(ball nut)(3)를 통해 원반형 회전식 MR 감쇄기 또는 MR 브레이크(1)를 동시에 빠른 회전운동으로 구동시킨다.As shown in Figure 1, the operation of the present invention is a linear movement of the telescoping rod (4) ball ball (2) and nut (3) by the impact or vibration from the outside ) Drives the disc-shaped rotary MR attenuator or MR brake 1 at the same time with rapid rotational movement.

이때 회전식 MR 감쇄기 또는 MR 브레이크에서 발생되는 회전력(torque)이 충격ㆍ진동흡수력으로 작용하여 외부 충격을 자동적으로 흡수하고 시스템의 진동을 억제한다.At this time, the torque generated by the rotary MR attenuator or MR brake acts as a shock and vibration absorbing force to automatically absorb external shocks and suppress vibration of the system.

이상에서 상술한 바와 같이, 본 발명은 갑작스런 외부 충격이나 진동으로부터 구조물이나 기계를 보호하고 진동을 감쇄시킬 수 있는 볼 스크류(ball screw)를 결합한 자기유변유체(magnetorheological fluid) 진동저감장치(damper)로서 유압식ㆍ공압식 등 기존의 진동저감장치에 비해 훨씬 더 제어가 용이한 준 능동형(semi-active) 진동저감장치 설계에 관한 것이다.As described above, the present invention is a magnetorheological fluid vibration damper incorporating a ball screw that protects a structure or machine from sudden external shocks or vibrations and attenuates vibrations. The present invention relates to the design of a semi-active vibration reduction device which is much easier to control than conventional vibration reduction devices such as hydraulic and pneumatic.

본 발명에서 구현하려고 하는 자기유변유체 진동저감장치는 구조적으로 공개된 일반구조형태 또는 특별히 설계된 구조형태를 갖는 회전식 MR(magnetorheological) 장치(damper, brake)를 이용하여 볼 스크류를 결합한 설계방식을 고안하였으며, 진동으로 인한 볼 스크류의 선형운동에 의하여 회전식 MR 장치가 작동된다.The magnetorheological fluid vibration reduction device to be implemented in the present invention devised a design method in which a ball screw is coupled using a rotary magnetizer (damper, brake) having a general structure or a specially designed structure. The rotary MR device is operated by the linear motion of the ball screw due to vibration.

본 발명에서 볼 스크류는 회전운동을 선형운동으로 또는 선형운동을 회전운동으로 변환할 뿐만 아니라, 기계식 증폭기(mechanical amplifier) 역할을 하기 때문에 작은 용량의 진동 흡수력이 이를 통하여 크게 증폭된다.In the present invention, the ball screw not only converts the rotational movement into the linear movement or the linear movement into the rotational movement, but also acts as a mechanical amplifier, so that the vibration absorbing force of the small capacity is greatly amplified.

또한 전원공급장치의 전류를 조정하지 않고 독립적으로 볼 스크류 리드(lead)의 크기를 조정함으로써 다양한 진동 흡수력을 얻을 수 있는 장점이 있다.In addition, by adjusting the size of the ball screw lead independently without adjusting the current of the power supply has the advantage that can be obtained a variety of vibration absorption.

본 발명에서 결합된 회전식(rotary) MR 장치는 장치 내 MR 유체에 다양한 세기의 전자기장을 형성시켜 전자기장의 세기에 따른 MR 유체의 점도(viscosity)를 조정함으로서 생성된 높은 유체 전단력(shear force)을 충격 및 진동의 흡수력으로 이용하는 유체식 진동저감장치이다. 이것은 MR 유체 속에 섞여 있는 작은 철분 입자가 자기장에 의해 순간적으로 일렬로 체인처럼 정렬되어(aligned) 고착화되는(solidified) 성질을 이용한 것으로 작은 전류의 양으로 큰 충격ㆍ진동 흡수력을 얻을 수 있으며, 준 능동형(semi-active) 방식으로서 수백 헤르츠(Hz)의 전자기장 제어가 가능하기 때문에 실시간 제어를 구현할 수 있다.The rotary MR device combined in the present invention forms an electromagnetic field of various intensities in the MR fluid in the device, thereby impacting the high fluid shear force generated by adjusting the viscosity of the MR fluid according to the strength of the electromagnetic field. And a fluid vibration reduction device used as an absorption force of vibration. It utilizes the property that small iron particles mixed in MR fluid are instantaneously aligned and solidified in a chain by a magnetic field, and can obtain large shock and vibration absorption with a small amount of current. As a semi-active method, it is possible to control the electromagnetic field of several hundred hertz (Hz), thereby real-time control can be realized.

Claims (6)

본 발명에서 구현하고자 하는 볼스크류 자기유변유체 진동저감장치(ball screw magnetorheological damper)는 구조면에서 다음의 세 가지 주요부품으로 구성된다. 첫째, 준 능동제어를 위한 회전식 MR 감쇄기 또는 MR 브레이크, 둘째, 직선운동을 회전운동으로 혹은 회전운동을 직선운동으로 효율적으로 원활하게 변환할 수 있는 볼 스크류(ball screw)ㆍ볼 너트(ball nut) 또는 유사기능의 부품(Acme screw) 구조의 결합인 텔리스코핑(telescoping) 메커니즘(mechanism), 셋째, 회전식 MR 감쇄기 또는 MR 브레이크에 연결되는 전원공급장치(power supplier)와 제어회로 (semi-active control circuit)로 구성되고 각 부품의 조립(배열)과 작용에 있어서,The ball screw magnetorheological damper to be implemented in the present invention is composed of the following three main parts in terms of structure. First, a rotary MR attenuator or MR brake for quasi-active control, and second, a ball screw and ball nut that can efficiently and efficiently convert linear motion to rotational motion or linear motion to linear motion. Or a telescoping mechanism, which is a combination of similar screw structures, third, a power supplier and a semi-active control circuit connected to a rotary MR attenuator or MR brake. ) And in the assembly and arrangement of each part, (가) 볼 너트(ball nut)(3)는 텔리스코핑 축(telescoping rod)(4)에 부착되어 볼 스크류(2)의 홈을 따라 좌우로 선형운동을 하며 바깥고정용 지지 실린더(support cylinder)(5)안에 자리잡고 있으며(A) A ball nut (3) is attached to a telescoping rod (4) to move linearly from side to side along the groove of the ball screw (2) and to support the outer fixing cylinder. Nestled in (5) (나) 볼 너트(ball nut)(3)의 선형운동에 의해 시계방향 또는 반시계 방향으로 회전하는 볼 스크류(ball screw)(2)는 한쪽 부분이 베어링(thrust bearing)(7)에 의해 지지되고 지지된 볼 스크류(ball screw) (2)의 하단 부분은 회전축을 이루며 그 끝 부분은 회전식 MR 감쇄기 또는 MR 브레이크(1)의 회전축에 직접 직선으로(in-line) 연결되거나 커플링 또는 유사부품에 의해 연결되어 볼 스크류(ball screw)(2) 회전 시 회전식 MR 감쇄기 또는 MR 브레이크(1)를 동시에빠른 속도로 회전시키며(B) The ball screw 2, which rotates clockwise or counterclockwise by the linear motion of the ball nut 3, is supported by one of the bearings 7. The lower end of the supported and supported ball screw (2) constitutes an axis of rotation, the end of which is connected in-line directly to the axis of rotation of a rotary MR attenuator or MR brake (1), or a coupling or similar part. Connected by means of rotating the rotating MR attenuator or MR brake (1) at the same time as the ball screw (2) rotates (다) 회전식 MR 감쇄기 또는 MR 브레이크(1)는 케이스(case) 내에 장착되고 회전식 MR 감쇄기 또는 MR 브레이크(1)는 그 케이스의 지지 부분에 고정ㆍ부착되며(C) The rotary MR attenuator or MR brake 1 is mounted in a case, and the rotary MR attenuator or MR brake 1 is fixed and attached to the support portion of the case. (라) 전류의 세기를 조정함으로서 다양한 크기의 회전력을 얻기 위하여 전원공급장치(power supplier)와 제어회로(semi-active control circuit)(6)가 회전식 MR 감쇄기 또는 MR 브레이크에 연결된다.(D) A power supplier and a semi-active control circuit 6 are connected to a rotary MR attenuator or MR brake to achieve varying magnitudes of torque by adjusting the strength of the current. 제 1항에 있어서, 본 발명은 공개된 일반구조형태 또는 특별히 설계된 구조형태를 갖는 회전식 자기유변유체 감쇄기(rotary MR damper) 또는 회전식 자기유변유체 브레이크(rotary MR brake)를 볼 스크류와 직접(in-line) 결합하여 선형운동형 진동저감장치를 구현하는 것이다.2. The invention of claim 1 wherein the present invention comprises a rotary MR damper or a rotary MR brake having a disclosed general structure or a specially designed structure in-line with a ball screw. line) to realize a linear motion vibration reduction device. 제 1항에 있어서, 본 발명은 외부로부터의 충격이나 진동에 의한 진동저감장치의 선형운동이 볼 스크류(2)ㆍ너트(3)를 통해 전식 자기유변유체 감쇄기(rotary MR damper) 또는 회전식 자기유변유체 브레이크(rotary MR brake)를 빠른 회전운동으로 구동시킬 때, 회전식 자기유변유체 감쇄기(rotary MR damper) 또는 회전식 자기유변유체 브레이크(rotary MR brake)에서 발생되는 회전력 (torque)이 동시에 진동ㆍ충격 흡수력으로 작용하여 외부 진동ㆍ충격을 자동적으로 흡수하고 시스템의 진동을 억제한다.The method according to claim 1, wherein the linear movement of the vibration reducing device due to external shock or vibration is carried out by a rotary MR damper or a rotary magnetorheological fluid through a ball screw (2) and a nut (3). When driving a rotary MR brake with a rapid rotational motion, the torque generated by a rotary MR damper or a rotary MR brake is simultaneously vibrated and shock absorbed. It automatically absorbs external vibration and shock and suppresses system vibration. 제 3항에 있어서, 본 발명에서 결합된 회전식(rotary) MR 장치는 장치 내 MR 유체에 다양한 세기의 전자기장을 형성시켜 전자기장의 세기에 따른 MR 유체의 점도(viscosity)를 조정함으로서 생성된 높은 유체 전단력(shear force)을 충격 및 진동의 흡수력으로 이용하는 진동저감장치이다.4. The rotary MR device of claim 3, wherein the rotary MR device coupled in the present invention forms a high intensity electromagnetic field in the MR fluid in the device to adjust the viscosity of the MR fluid according to the strength of the electromagnetic field. It is a vibration reduction device that uses shear force as absorbing force of shock and vibration. 제 2항에 있어서, 볼 스크류는 회전운동을 선형운동으로 또는 선형운동을 회전운동으로 변환할 뿐만 아니라, 기계식 증폭기(mechanical amplifier) 역할을 하기 때문에 작은 용량의 진동 흡수력이 이를 통하여 크게 증폭되며, 또한 전원공급장치의 전류를 조정하지 않고 독립적으로 볼 스크류 리드(lead)의 크기를 조정함으로써 다양한 진동 흡수력을 얻을 수 있다.3. The method according to claim 2, wherein the ball screw not only converts the rotational movement into linear movement or the linear movement into rotational movement, but also acts as a mechanical amplifier, so that a small amount of vibration absorbing force is amplified therethrough. By adjusting the size of the ball screw leads independently without adjusting the power supply current, various vibration absorbing forces can be obtained. 제 2항에 있어서, 회전식 자기유변유체 감쇄기(rotary MR damper) 또는 회전식 자기유변유체 브레이크(rotary MR brake)에서 발생되는 회전력은 구조적인 설계변경 없이도 감쇄기에 연결된 전원공급장치(power supplier)의 전류만을 조정함으로써 회전력의 크기를 바꿀 수 있기 때문에 설계 상에 있어서 특별한 제한요소 없이 다양한 크기의 충격ㆍ진동흡수력을 얻을 수 있다.3. The rotational force generated by a rotary MR damper or a rotary MR brake includes only the current of a power supplier connected to the attenuator without structural design changes. By adjusting the size of the rotational force, the shock and vibration absorbing force of various sizes can be obtained without any particular limitation in the design.
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CN107477131A (en) * 2017-07-25 2017-12-15 重庆大学 Screw pump MR damper and its Spinning
CN115095626A (en) * 2022-08-03 2022-09-23 南京信息工程大学 Rotary magnetorheological fluid damper working in valve mode

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* Cited by examiner, † Cited by third party
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US7275750B2 (en) * 2004-05-12 2007-10-02 General Motors Corporation Roll control system, device and method for controlling vehicle stability
US7303056B2 (en) * 2004-12-09 2007-12-04 General Motors Corporation Magnetorheological device and system and method for using the same
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WO2012054774A2 (en) * 2010-10-20 2012-04-26 Penske Racing Shocks Shock absorber with inertance
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CN107477131A (en) * 2017-07-25 2017-12-15 重庆大学 Screw pump MR damper and its Spinning
CN115095626A (en) * 2022-08-03 2022-09-23 南京信息工程大学 Rotary magnetorheological fluid damper working in valve mode

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