• Title/Summary/Keyword: 차량진동

Search Result 1,003, Processing Time 0.026 seconds

Analysis of the Vibration Characteristics of a High-Speed Train using a Scale Model (축소모델을 통한 고속철도 차량의 진동특성 해석 및 검증)

  • Han, Jae Hyun;Kim, Tae Min;Kim, Jeung Tae
    • Journal of the Korean Society for Railway
    • /
    • v.16 no.1
    • /
    • pp.7-13
    • /
    • 2013

  • A scaled version of a roller rig is developed to demonstrate the dynamic characteristics of a railway vehicle for academic purposes. This rig is designed based on Jaschinski's similarity law. It is scaled to 1/10 of actual size and allows 9-DOF motion to examine the up and down vibration of a train set. The test rig consists of three sub-hardware components: (i) a driving roller mechanism with a three-phase AC motor and an inverter, (ii) a bogie structure with first and second suspensions, and (iii) the vehicle body. The motor of the rig is capable of 3,600rpm, allowing the test to simulate a vehicle up to a maximum speed of 400Km/hr. Because bearings and joints are properly connected to the sub-structures, various motion analyses, such as a lateral, pitching, and yawing motion, are allowed. The slip motion between the rail and the wheel set is also monitored by several sensors mounted in the rig. After the construction of the hardware, an experiment is conducted to obtain the natural frequencies of the dynamic behavior of the specimen. First, the test rig is run and data are collected from six sets of accelerometers. Then, a numerical analysis of the model based on the ADAMS program is derived. Finally, the measurement data of the first three fundamental frequencies are compared to the analytical result and the validation of the test rig is conducted. The results show that the developed roller rig provides good accuracy in simulating the dynamic behavior of the vehicle motion. Although the roller rig designed in this paper is intended for academia, it can easily be implemented as part of a dynamic experiment of a bogie and a vehicle body for a high-speed train as part of the research efforts in this area.

  • https://doi.org/10.7782/JKSR.2013.16.1.007 인용 PDF KSCI

Dynamic Characteristics of ALA and Active Vibration Control Experiment (ALA 동적 특성 및 능동진동제어 실험)

  • Lee, Han-Dong;Kwak, Moon-K.;Kim, Jeong-Hoon;Song, Yoon-Chul;Shim, Jae-Ho
    • Transactions of the Korean Society for Noise and Vibration Engineering
    • /
    • v.19 no.8
    • /
    • pp.781-787
    • /
    • 2009

  • This research is concerned with the application of the active linear actuator to the active vibration control of structure. The active linear actuator will be mounted on the sub-frame so that it can cancel the excitation transferred from the engine. Accelerometer mounted on the sub-frame detects the vibration and its signal is fed into the DSP controller where the control algorithm is installed. The output of the DSP controller is connected to the driver which amplifies the DSP output. In general, the pulse width modulation power amplifier is used to drive the voice-coil type actuator. This study shows the dynamic characteristics of the active linear actuator and active vibration control experimental results.

  • https://doi.org/10.5050/KSNVN.2009.19.8.781 인용 PDF KSCI