• Title/Summary/Keyword: tilting actuator

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An Experimental Evaluation of a Hydraulic Tilting Actuator for a Diagnosis of Load Characteristics Acting on the Tilting Actuator of the Tilting Train (틸팅열차의 틸팅구동장치에 작용하는 부하특성 진단을 위한 유압식 틸팅 엑츄에이터의 실험적 평가)

  • Lee, Jun-Ho;Kim, Ho-Yeon;Lee, Byeong-Song;Lee, Hyung-Woo;Park, Chan-Bae;Kang, Chul-Goo
    • Journal of Institute of Control, Robotics and Systems
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    • v.18 no.10
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    • pp.921-927
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    • 2012
  • In this paper we deal with a hydraulic tilting actuator to make a diagnosis of load characteristic acting on the tilting actuator of the tilting train. Tilting actuator in the tilting train plays a role of making tilt of the train when the train runs a curve section to make the train run without deceleration. However in the process of tilt the tilting actuator is affected by the load acting on the actuator, which has a possibility to make bogie vibration. In order to figure out the effect of the load on the tilting actuator a hydraulic tilting devices that are capable of tilting the train is proposed. The proposed devices are installed in the front bogie and in the rear bogie to make tilting of the train. The devices are consist of sensors that measure the load capacity of the actuator and displacement of the hydraulic cylinder stroke, control blocks to make synchronization of the two actuators, user interface block to monitor the status of the actuators. The effectiveness of the proposed hydraulic tilting actuators is presented by the experimental evaluation using actual tilting train.

Characterization of the Tilting Link Mechanism for the Tilting Train (틸팅차량용 틸팅 링크메커니즘의 특성연구)

  • Kim Nam-Po;Kim Jung-Seok
    • Journal of the Korean Society for Railway
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    • v.8 no.1
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    • pp.34-40
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    • 2005
  • This study presents parametric studies for design of a tilting mechanism to be used in 180km/h tilting train. The tilling mechanism is composed of 4 links, a lilting bolster old an electro-mechanical actuator. The movements of the tiling center, CG of the train body, coupler center and tilting actuator along variation of upper and lower span length have been verified by the kinematic analysis. Moreover, the inclination angle and the stroke of the tilting actuator according to the variation of the tilting angle from +8 degrees to -8 degrees have been investigated. From this study, the relation between the movements of the CG of the train body, coupler center and tilting actuator and the height of the tilting center could be evaluated.

Design and Analysis of a Tilting Actuator for a Projection TV (프로젝션 TV 용 틸팅 액츄에이터의 설계 및 분석)

  • Im, Hyung-Bin;Park, Chul-Jun;Park, Jong-Yong;Chung, Jin-Tai
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.11a
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    • pp.743-748
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    • 2007
  • This paper describes a lens transmissive type tilting actuator for a projection TV. An electromagnetic analysis and a structural analysis of the tilting actuator system is necessary to design a tilting actuator for a projection TV. The tilting actuator is composed a permanent magnet, coil and yoke as the electromagnetic components and it needs a driving hinge part as the mechanical component. The design of the tilting actuator for the projection TV is performed by the following procedure. Firstly, a magnetic flux density of the tilting actuator system is analyzed by a mathematical theory and an electromagnetic FEM. Secondary, a magnetic circuit method is used to determine tilting force. Thirdly, the structural FEM is carried out with an FE model of a lens-transmissive type tilting actuator and then the prototype of the model is manufactured. The characteristic of the prototype is experimentally observed. Finally, a design for a new hinge configuration is suggested for better performance.

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Dynamic Analysis of a Tilting Actuator (틸팅 액츄에이터의 동특성 해석)

  • Im, Hyung-Bin;Chung, Jin-Tai;Ryu, Jae-Wook;Bang, Hyun-Chol
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2006.05a
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    • pp.207-212
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    • 2006
  • A dynamic analysis of a tilting actuator for projection TV is presented in this study. Generally, an excessive vibration of a tilting actuator is occurred a lowering of video quality of projection TV because of a dynamic unstability of it. Therefore, a dynamic analysis of a tilting actuator system is positively necessary. In this study, a mathematical model about a mirror-reactive type tilting actuator is presented and evidenced by experiment. A FEM model of a lens-transmissive type tilting actuator is presented and we made prototype of it. Then, it is evidenced by experiment. Besides, a design for hinge configuration of it is presented.

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Dynamic Analysis of a Tilting Actuator for a Projection TV (프로젝션 TV용 틸팅 액추에이터의 동특성 해석)

  • Im, Hyung-Bin;Park, Chul-Jun;Chung, Jin-Tai
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.18 no.2
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    • pp.192-198
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    • 2008
  • A dynamic analysis of a tilting actuator for a projection TV is presented in this study. Severe vibration of a tilting actuator deteriorates the video quality of a projection TV. For this reason, a dynamic analysis of the tilting actuator system is essential to improve the video quality. The dynamic behaviors of the mirror reactive-type tilting actuator are examined in order to obtain design requirements of the lens transmissive-type tilting actuator. Based on these design requirements, a basic design is performed for the lens transmissive-type tilting actuator. With the basic design, the dynamic characteristics of the lens transmissive-type actuator are investigated by the finite element analysis After the prototype of the actuator is manufactured, the dynamic behaviors of the prototype are examined by experiments. As a result of this study, a new design for the hinge configuration of the actuator is suggested for better performance.

A Study on a Configuration of the Load Characteristic Evaluation Device Using Hydraulic Power for the Analysis of the Tilting Kinetic Mechanism (틸팅 부하메커니즘 특성 분석을 위한 유압식 부하특성 평가 장치구성에 대한 연구)

  • Lee, Jun-Ho;Kim, Ho-Yeon;Han, Seong-Ho
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.21 no.12
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    • pp.1152-1158
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    • 2011
  • In this paper a configuration of the load evaluation device for the tilting actuator using hydraulic power is presented, which makes it possible to measure the force action on the tilting actuator. It is possible to measure only current using the conventional electro-mechanical actuator when the bogie is in the process of the tilting. This makes impossible to measure the force acting on the tilting actuator. In order to overcome this problem a kinetic mechanism test system using hydraulic cylinder is proposed. The system are consisted of hydraulic cylinder for the tilting actuation, control system to control hydraulic power, sensors to measure for force and displacement and monitoring system for the user interface.

A Conceptual Design for a Kinetic Performance Test System for the Tilting Mechanism Using Hydraulic Cylinder (유압실린더를 활용한 틸팅메카니즘 운동특성 평가 시스템 구축에 관한 개념설계)

  • Lee, Jun-Ho;Han, Seong-Ho;Kim, Ho-Yeon;Nam, Jin-Uk
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.1035-1040
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    • 2011
  • In this paper we deal with a kinetic performance test system using hydraulic cylinder. It is possible to measure only current using the conventional electro-mechanical actuator when the bogie is in the process of the tilting. This makes impossible to measure the force acting on the tilting actuator. In order to overcome this problem a kinetic performance test system using hydraulic cylinder is proposed. The proposed system provide easy kinetic evaluation for the tilting mechanism and evaluation for the co-relation between load acting on the tilting actuator and the moving displacement(strock) of the tilting actuator.

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Evaluation and Analysis of Dynamic Characteristics in Tilt Actuator for High Density Optical Storage Devices (고밀도 광저장 기기용 틸트 액추에이터 동특성 분석 및 평가)

  • 김석중;이용훈;최한국
    • Journal of KSNVE
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    • v.10 no.4
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    • pp.584-595
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    • 2000
  • We design a new actuator for high density optical device in order to control the radial tilting motion. The newly designed actuator makes it possible to control the tilting motion actively, while the coventional actuator compress tilting motion with passive spring. First of all, We present 3-dimensional modeling of actuator and accomplish the modal analysis and magnetic analysis of actuator. Due to these results, a new designed actuator has performance of high sensitivity and high second resonance frequency. Secondly, We present the 3-DOF dynamic modeling of the 4-wire spring type actuator. sensitivity analysis is performed to consider the assembling error, such as the difference of mass center and force center. From these results, the sensitivities of rotation due to the assembly error are revealed and design criteria of rotation is presented. And experimental results of a newly designed actuator are presented and compared with theoretical results. Finally, We propose a dynamic tilt compensation and high acceleration actuator for high density optical storage devices.

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The Study on the Kinematics of Carbody Tilting Mechanism for Railway Vehicles (철도차량용 차체틸팅기구의 기구학적 특성연구)

  • 김정석;김남포;고태환
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2004.05a
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    • pp.384-388
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    • 2004
  • This study presents parametric studies for design of tiling mechanism to be used in 180km/h tilting train. The titling mechanism is composed of 4 links, a tilting bolster and an electro-mechanical actuator. First we have determined the installation height of tilting actuator using 3D tilting bogie modeling. Secondary, we verified movements of the tiling center and train body CG along variation of upper and lower span length. From this study, we obtained the upper and lower span length to minimize the lateral and vertical motion of CG of train body. Finally, we evaluated the tilting actuator force and power required to tilt the train body to $\pm$8$^{\circ}$.

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Design and Performance Test of a Rotary Actuator for Side Tilting Excavator Bucket (좌우 틸팅이 가능한 굴삭기 버켓용 로터리 액츄에이터 설계 및 시험)

  • Park, Min Su;Lee, Jun Seok;Kim, Do Youp;Lee, Eung Suk
    • Journal of the Korean Society for Precision Engineering
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    • v.34 no.1
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    • pp.47-51
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    • 2017
  • Generally, a working excavator has only one directional bucket tilting angle, which is up-forward. However, side direction rotation of the bucket would allow variety of working output. We designed a hydraulic rotary actuator comprising a double rod hydraulic cylinder with a rack-pinion gear set for use in excavator bucket with side tilting mechanism, thus converting the linear to angular motion. The proposed side tilting rotary actuator was designed with parts suitable for medium size of heavy duty excavator. These mechanical parts were inexpensive to purchase and the manufacturing cost was reasonable. The proposed mechanism is potentially useful for excavator with variety of working output.