• Title/Summary/Keyword: tractive effort

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Anti-Slip Control by Adhesion Effort Estimation of Railway Vehicle (철도차량장치의 점착력 추정에 의한 Anti-Slip 제어)

  • 김길동;이호용;안태기;홍재성;한석윤;전기영
    • Journal of the Korean Society for Railway
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    • v.6 no.4
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    • pp.257-264
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    • 2003
  • In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the weight of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, the electric motor coach has slip phenomena. This paper proposes a re-adhesion control algorithm which uses the maximum adhesive effort by instantaneous estimation of adhesion force using load torque disturbance observer. Based on this estimated adhesive effort, the re-adhesion control is performed to obtain the maximum transfer of the tractive effort.

A Study on Acceleration Performances of EMUs According to Wheel Diameter Changes (전동차 차륜직경변화가 가속성능에 미치는 영향 연구)

  • Min, Seung Kon;Ko, Jeong Seo
    • Journal of the Korean Society of Safety
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    • v.30 no.5
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    • pp.92-99
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    • 2015
  • The diameter of a new wheel in EMUs is 860mm and it can be used up to 773mm. To obtain an predefined acceleration despite wheel diameter changes, the tractive efforts of the vehicles must be properly controlled. In the commencement of this study, acceleration tests were performed for empty EMUs when the wheel diameter was changed to 860mm, 820mm and 780mm, respectively. In order to deal with more complicated running conditions, we developed dynamic simulation models of the EMUs using VI-Rail, and simulated the models in empty and full passenger loads, respectively. Using the simulation results, we analyzed the gradient of time-velocity graphs by considering the changes of the total weight vehicles and moment of inertia of the wheelsets as well as tractive effort according to the wheel diameter changes. As the results, it was found that there are significant differences in acceleration performances according to the wheel diameters and the payloads of EMUs. In case of 860mm which is the maximum wheel diameter, the test & simulation results show that the vehicle couldn't reach the predefined acceleration, 3.0km/h/s, due to lack of tractive effort.

Development of Tractive Performance Prediction Model for Flexible Tracked Vehicles (연성 궤도형차량의 견인성능 예측 모델 개발)

  • 박원엽;이규승
    • Journal of Biosystems Engineering
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    • v.23 no.3
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    • pp.219-228
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    • 1998
  • This study was conducted to develop the mathematical model and computer simulation program(TPPMTV98) for predicting the tractive performance of tracked vehicles. It takes into account major design parameters of the vehicle as well as the pressure-sinkage and shearing characteristics of the soil, and the response of the soil to repetitive loading. Structural analysis and numerical iterative method were used for the derivation of mathematical model. The simulatiom model TPPMTV98 can predict the ground pressure distribution and the shear stress under a track, the motion resistance, the tractive effort and the drawbar pull of the vehicles as functions of slip. Predicted tractive performance results obtained by the simulation model were validated by comparing the results firm the Wong's model, the offectiveness of Wong's model validated by many of the experiment. It was found that there is fairy close agreement between the prediction by TPPMTV98 and the results from Wong's model. The computer simulation model TPPMTV98 can be used for the optimization of tracked vehicle design or for the evaluation of vehicle candidates for a given mission and environment.

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Anti-Slip Control by Adhesion Effort Estimation of 1C-4 Minimized Railway Vehicle using Load Torque Disturbance Observer (부하토크외란관측기를 이용한 1C-4M 축소형 철도차량장치의 점착력 추정에 의한 Anti-Slip 제어)

  • 전기영;조정민;이승환;오봉환;이훈구;김용주;한경희
    • The Transactions of the Korean Institute of Power Electronics
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    • v.8 no.4
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    • pp.366-374
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    • 2003
  • In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the weight of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, the electric motor coach has slip phenomena. This paper proposes a re-adhesion control algorithm which uses the maximum adhesive effort by instantaneous estimation of adhesion force using load torque disturbance observer. Based on this estimated adhesive effort, the re-adhesion control Is peformed to obtain the maximum transfer of the tractive effort.

Parallel Running of Induction Motor using Anti-slip Controller (Anti-slip 제어기를 이용한 유도전동기 병렬운전)

  • Kim, Jung-Gyo;Lee, Ju
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.55 no.1
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    • pp.41-46
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    • 2006
  • In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the weight of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, the electric motor coach has slip phenomena. This paper proposes a anti-slip control algorithm which uses the maximum adhesive effort by instantaneous estimation of adhesion force using load torque disturbance observer. Based on this estimated adhesive effort, the anti-slip control is performed to obtain the maximum transfer of the tractive effort.

Study on Maximum Adhesive Effort Estimation using Disturbance Observer (외란관측기를 이용한 최대 점착력 추정에 관한 연구)

  • Jun, K.Y.;Lee, S.H.;Oh, B.H.;Kang, S.U.;Lee, H.G.;Kim, Y.J.;Han, K.H.
    • Proceedings of the KIEE Conference
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    • 2001.07b
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    • pp.1120-1122
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    • 2001
  • In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the weight of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, the electric motor coach has slip phenomena. This paper proposes a re-adhesion control algorithm which uses the maximum adhesive effort by instantaneous estimation of adhesion force using disturbance observer. Based on this estimated adhesive effort, the re-adhesion control is performed to obtain the maximum transfer of the tractive effort.

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Parallel Running of Induction Motor by Anti-slip Controller of Inertia Conversion (관성변화시의 Anti-slip 제어기에 의한 유도전동기 병렬운전)

  • Jeon, Kee-Young;Kim, Jung-Gyo
    • Proceedings of the KIEE Conference
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    • 2006.07b
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    • pp.877-878
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    • 2006
  • In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the weight of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, inertia conversion the electric motor coach has slip phenomena. This paper proposes a anti-slip control algorithm which uses the maximum adhesive effort by instantaneous estimation of adhesion force using load torque disturbance observer. Based on this estimated adhesive effort, the anti-slip control is performed to obtain the maximum transfer of the tractive effort.

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A Study of Adhesive Effect Estimation using Anti-slip Control Algorithm (Anti-slip 제어 알고리즘을 이용한 접착력 추정에 관한 연구)

  • Kim Gil-Dong;Ahn Tae-Ki;Lee Woo-Dong;Lee Ho-Yong;Park Seo-Young
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.626-631
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    • 2004
  • In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the weight of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, the electric motor coach has slip phenomena. This paper proposes a re-adhesion control algorithm which uses the maximum adhesive effort by instantaneous estimation of adhesion force using load torque disturbance observer. Based on this estimated adhesive effort, the re-adhesion control is performed to obtain the maximum transfer of the tractive effort.

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Anti-Slip Control and Speed Sensor-less Vector Control of the Railway Vehicle (철도차량의 Anti-Slip 제어 및 속도센서리스 벡터제어)

  • Jho Jeong-Min;Kim Gil-Dong
    • Journal of the Korean Society for Railway
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    • v.8 no.3
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    • pp.216-221
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    • 2005
  • In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the wright of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, the electric motor coach has slip phenomena. This paper proposes a re-adhesion control based on disturbance observer and sensor-less vector control. The numerical simulation and experimental results point out that the proposed re-adhesion control system has the desired driving wheel torque response for the tested bogie system of electric coach. Based on this estimated adhesive effort, the re-adhesion control is performed to obtain the maximum transfer of the tractive effort.

A Study on Maximum Traction Effort Control with the Adhesive Effort Estimation (점착력 추정에 의한 최대 견인력 제어에 관한 연구)

  • Jun, K.Y.;Chung, J.H.;Kim, S.N.;Lee, S.H.;Oh, B.H.;Lee, H.G.;Kim, Y.J.;Han, K.H.
    • Proceedings of the KIEE Conference
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    • 2002.07b
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    • pp.1000-1002
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    • 2002
  • In electric motor coaches, the rolling stocks move by the adhesive effort between rail and driving wheel. Generally, the adhesive effort is defined by the function of both the weight of electric motor coach and the adhesive effort between rails and driving wheel. The characteristics of adhesive effort is strongly affected by the conditions between rails and driving wheel. When the adhesive effort decreases suddenly, the electric motor coach has slip phenomena. This paper proposes a re-adhesion control algorithm which uses the maximum adhesive effort by instantaneous estimation of adhesion force using disturbance observer. Based on this estimated adhesive effort, the re-adhesion control is performed to obtain the maximum transfer of the tractive effort.

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