• 제목/요약/키워드: Vehicle Dynamic Control System

검색결과 411건 처리시간 0.033초

VEHICLE DYNAMIC CONTROL ALGORITHM AND ITS IMPLEMENTATION ON CONTROL PROTOTYPING SYSTEM

  • Zhang, Y.;Yin, C.;Zhang, J.
    • International Journal of Automotive Technology
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    • 제7권2호
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    • pp.167-172
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    • 2006
  • A design of controller for vehicle dynamic control(VDC) and its implementation on the real vehicle were introduced. The controller has been designed using a three-degrees-of-freedom(3DOF) yaw plane vehicle, and the control algorithm was implemented on the vehicle by control prototyping system dSPACE. A hybrid control algorithm, which makes full use of the advantages of robust and fuzzy control, was adopted in the control system. Field test results show that the performance of the vehicle handling dynamics with hybrid controller is improved obviously compared to that without VDC and with simple robust controller on skiddy roads(friction coefficients lower than 0.3).

차량 동력학 해석을 위한 조향장치 모델링 (Steering Model for Vehicle Dynamic Analysis)

  • 탁태오;김금철;윤중락
    • 한국정밀공학회지
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    • 제16권12호
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    • pp.214-221
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    • 1999
  • In this research, a power-assisted steering system is modeled as a part of a full vehicle dynamic model. The dynamic model of the steering system incorporates hydraulic and dynamic relations between major parts of a steering system, such as steering column, control valve, rack and pinion gear. Through an experimental setup of the steering system, the steering system model is validated. The steering model is included in a full vehicle dynamic model of a car, where kinematic relations between steering and suspension system are defined, and various simulations are performed to evaluate the performance of steering system in conjunction with overall dynamic performance of the vehicle.

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전차륜조향 굴절차량의 안내제어를 위한 횡방향 동역학 모델 (Lateral Dynamic Model of an All-Wheel Steered Articulated Vehicle for Guidance Control)

  • 윤경한;김영철;민경득;변윤섭
    • 전기학회논문지
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    • 제60권6호
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    • pp.1229-1238
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    • 2011
  • This paper deals with the lateral dynamic model of an all-wheel steered articulated vehicle to design a guidance controller. Nonlinear dynamic model of articulated vehicle is developed by complementing the model about the BRT system of California PATH in U. S. A. and the Phileas system of the APTS in Netherlands. Linear lateral dynamic model has been derived from the nonlinear dynamic model under some assumptions associated with the driving conditions. To design a guidance controller, we derive a transfer function that is steering angle as input and lateral acceleration as output from the linear lateral dynamic model by applying the parameter of vehicle that is developed by Korea Railroad Research Institute. To validate the dynamic model, nonlinear dynamic model has been compared with a vehicle model that has been programmed in ADAMS, and linear dynamic model has been compared with a nonlinear dynamic model under sime assumptions.

자기부상열차 모듈의 동특성 시뮬레이션 (Dynamic Simulation for Modules of a Magnetically-Levitated Vehicle)

  • 김종문
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • 제55권12호
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    • pp.653-660
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    • 2006
  • In this paper, dynamic simulation results for modules of a magnetically-levitated(Maglev) vehicle are presented. The mathematical dynamic models for the Maglev vehicle are firstly derived. The Maglev system consists of one vehicle, two half-bogies, one guideway, four secondary suspensions, eight electromagnets and levitation control systems. Also, the dynamic characteristics are analysed by using the derived models. Finally, two simulations such as reference airgap step change of 1mm and rail step change of 1mm, are carried out. The dynamic simulation results are shown to testify the developed dynamic simulation program. From the results, we can see the possibility of the dynamic simulation program to develop a new Maglev vehicle system.

신경망을 이용한 엔진/브레이크 통합 VDC 시스템에 관한 연구 (A Study on the Engine/Brake integrated VDC System using Neural Network)

  • 지강훈;정광영;김성관
    • 제어로봇시스템학회논문지
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    • 제13권5호
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    • pp.414-421
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    • 2007
  • This paper presents a engine/brake integrated VDC(Vehicle Dynamic Control) system using neural network algorithm methods for wheel slip and yaw rate control. For stable performance of vehicle, not only is the lateral motion control(wheel slip control) important but the yaw motion control of the vehicle is crucial. The proposed NNPI(Neural Network Proportional-Integral) controller operates at throttle angle to improve the performance of wheel slip. Also, the suggested NNPID controller performs at brake system to improve steering performance. The proposed controller consists of multi-hidden layer neural network structure and PID control strategy for self-learning of gain scheduling. Computer Simulation have been performed to verify the proposed neural network based control scheme of 17 dof vehicle dynamic model which is implemented in MATLAB Simulink.

ACC 차량의 동특성 해석을 위한 VR 시뮬레이션 시스템 개발 (Development of the VR Simulation System for the Dynamic Characteristics of the Adaptive Cruise Controlled Vehicle)

  • 권성진;장석;윤경한;서명원
    • 한국자동차공학회논문집
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    • 제12권4호
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    • pp.163-172
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    • 2004
  • Nowadays, to analyze the dynamic characteristics of the automotive driving system, the computer simulation linked up with VR(Virtual Reality) technology is treated as the useful method with the improvement of computing ability. In this paper, the VR simulation system has been developed to investigate the driving characteristics of the ASV(Advanced Safety Vehicle) equipped with an ACC(Adaptive Cruise Control) system. For the purpose, VR environment which generates 3D graphic and sound information of the vehicle, the road, the facilities, and the terrain has been organized for the driving reality. Mathematical models of vehicle dynamic analysis including the ACC model have been constructed for computer simulation. The ACC modulates the throttle and brake functions to regulate the vehicle speed so that vehicles could keep proper spacing. Also, the real-time simulation algorithm synchronizes vehicle dynamic simulation with the graphic rendering. With the developed VR simulation system, simple scenarios are applied to analyze the dynamic characteristics. It is shown that the VR simulation system could be useful to evaluate the adaptive cruise controlled vehicle on various driving conditions.

차량동역학제어시스템 개발 (Development of Vehicle Dynamics Control System)

  • 김동신;신현성;박병석
    • 한국자동차공학회논문집
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    • 제7권9호
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    • pp.212-219
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    • 1999
  • This paper describes the NANDO VDC (Vehicle Dynamics Control) system for the vehicle stability enhancement and consists of the control strategies , computer simulation and tests on the various road surface. This VDC system controls the dynamic vehicle motion in the emergency situation such as the final oversteer/understeer andallows the vehicle to follow the course as desired by the driver. The system is based on an active yaw control and its performance verified by the test is shown. Also the comparison between the MANDO VDC System and a competitor is carried out.

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EPS 제어시스템 장착 승용차의 통합적 시뮬레이션 기법 연구 (Simulation Integration Technique of a Full Vehicle Equipped with EPS Control System)

  • 장봉춘;소상균
    • 한국정밀공학회지
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    • 제23권6호
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    • pp.72-80
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    • 2006
  • Electric Power Steering (EPS) mechanism has become widely equipped in passenger vehicle due to the increasing environmental concerns and higher fuel efficiency. This paper describes the development of concurrent simulation technique and simulation integration technique of EPS control system with a dynamic vehicle system. A full vehicle model interacting with EPS control algorithm was concurrently simulated on a single bump road condition. The dynamic responses of vehicle chassis and steering system resulting from road surface impact were evaluated and compared with proving ground experimental data. The comparisons show reasonable agreement on tie-rod load, rack displacement, steering wheel torque and tire center acceleration. This concurrent simulation capability was employed fur EPS performance evaluation and calibration as well as for vehicle handling performance integration and synthesis.

반지능형 현가시스템에 의한 차량의 능동적인 동적거동제어 (Active Dynamic behavior Control of Vehicle by Using Semi-intelligent Suspension System)

  • 김대원;배준영;신중호
    • 한국정밀공학회지
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    • 제15권6호
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    • pp.15-21
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    • 1998
  • Mostly a ride comfort and handling performance of vehicle is influenced by dynamic behavior control of vehicle. We are focusing on development of a semi-intelligent suspension system with continuously variable damper(HS-SH type). only using absolute velocity of sprung mass without using the relative velocity besides having lower system prices and a little energy requirement. In this paper, the system is realized in consideration to control strategy (sky-hook control, hybrid filter, etc.) and has been proved to have improvement of behavior control of vehicle by quarter car and Vehicle test, respectively.

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철도차량 추진제어장치 성능시험을 위한 관성부하 시험설비의 구조안전성 및 동특성 평가 연구 (A study on structural integrity and dynamic characteristic of inertial load test equipment for performance test of railway vehicle propulsion control system)

  • 장형진;신광복;이상훈;이대봉
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2010년도 춘계학술대회 논문집
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    • pp.1389-1394
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    • 2010
  • This paper describes the evaluation of structural integrity and dynamic characteristic of inertial load test equipments for performance test of railway vehicle propulsion control system. The propulsion control system of railway vehicle has to be confirmed of safety and reliability prior to it's application. Therefore, inertial load test equipments were designed through theoretical equation for performance test of propulsion control system. The structural analysis of inertial load test equipments was conducted using Ansys v11.0 and it's dynamic characteristic was evaluated the designed using Adams. The results showed that the structural integrity of inertial load test equipment was satisfied with a safety factor of 10.2. Also, the structural stability was proved by maximum dynamic displacement of 0.82mm.

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