• Title, Summary, Keyword: HILS

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무인비행선 HILS 시스템 개발

  • Kim, Seong-Pil;Ahn, Iee-Ki;Kim, Eung-Tai
    • Aerospace Engineering and Technology
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    • v.3 no.1
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    • pp.9-15
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    • 2004
  • In this paper, a HILS(Hardware-In-the-Loop-Simulation) System designed for an unmanned airship, which is under development by KARI, is introduced. A HILS system is essential to validate flight control systems on the ground. The HILS system consists of several systems: a virtual ADT(airborne data terminal) system, a virtual payload system, a virtual airship system, and a status display system. Also, a 3-axis motion table and an inertial navigation sensor are included. The reliability of the flight control computer has been validated by HILS tests.

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DEVELOPMENT OF A NETWORK-BASED TRACTION CONTROL SYSTEM, VALIDATION OF ITS TRACTION CONTROL ALGORITHM AND EVALUATION OF ITS PERFORMANCE USING NET-HILS

  • Ryu, J.;Yoon, M.;SunWoo, M.
    • International Journal of Automotive Technology
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    • v.7 no.6
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    • pp.687-695
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    • 2006
  • This paper presents a network-based traction control system(TCS), where several electric control units(ECUs) are connected by a controller area network(CAN) communication system. The control system consists of four ECUs: the electric throttle controller, the transmission controller, the engine controller and the traction controller. In order to validate the traction control algorithm of the network-based TCS and evaluate its performance, a Hardware-In-the-Loop Simulation(HILS) environment was developed. Herein we propose a new concept of the HILS environment called the network-based HILS(Net-HILS) for the development and validation of network-based control systems which include smart sensors or actuators. In this study, we report that we have designed a network-based TCS, validated its algorithm and evaluated its performance using Net-HILS.

Characteristics Monitoring Technique of HILS System Loop (HILS 시스템 루프 특성 모니터링 기법)

  • Hong, Jeong-Woon;Kim, Young-Joo;Kwak, Byung-Cheol
    • Proceedings of the KIEE Conference
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    • pp.566-568
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    • 1999
  • HILS is widely used in the test and evaluation of complex control system. This paper describes the structure of HILS and the control loop performance monitoring of HILS system Distal path delay and FMS(Flight Motion Simulator) dynamics were estimated and output of the estimated model were compared with real FMS output. The monitoring system can be used for analyzing the result of HILS.

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A Research on Naval Electronic Warfare System Engagement HILS Technology (해상 전자전체계 조우 HILS 연구)

  • Shin, Dong-Cho;Lee, Jeong-Hoon;Ryu, Si-Chan
    • Journal of the Korea Institute of Military Science and Technology
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    • v.13 no.5
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    • pp.785-792
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    • 2010
  • This paper on the Research of Naval Electronic Warfare System HILS(Hardware In the Loop System) describes the EW engagement HILS construction method for evaluation of the operational concept analysis on active RF Decoy in staying in the air and the deceit ability to anti-ship missile seeker. We obtain the EW M&S technology of EW engagement HILS and EW efficiency analysis from this project. This Naval Electronic Warfare System HILS technology will support Active Decoy Development Project and any other HILS of EW weapon in KOREA ARMY/NAVY/AIR FORCE.

A Development of Hardware-in-the Loop Simulation System For a Electric Power Steering System (전동식 동력 조향 장치 연구를 의한 HILS 시스템 개발)

  • Park, Dong-Jin;Yun, Seok-Chan;Han, Chang-Su
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.24 no.12
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    • pp.2883-2890
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    • 2000
  • In this study, a Hardware-In-The-Loop-Simulation(HILS) system for developing a Electric-Power-Steering(EPS) system is designed. To test a EPS by HILS system, a mathematical vehicle model with a steering system model has been constructed. This mathematical model has been constructed. This mathematical model has been downloaded to the Digital-Signal-Processor(DSP) board. To realize the lateral force acting on the front wheel in a real car. the steering wheel angle sensor and vehicle velocity have been used for input signal. The force sensor has been used for a feedback signal. The full vehicle states could by simulated by the HILS system. Consequently, the HILS system could by used to analyze control-parameters of a EPS that contributes to the maneuverability and stability of a vehicle. At the same time, the HILS system can evaluate the whole performance of the vehicle-steering system. Also the HILS system could do test could not be executed in real vehicle. The HILs system will useful for developing the control logic for the EPS system.

Development of Network-based Traction Control System and Study its on Performance Evaluation using Net-HILS (Net-HILS를 이용한 네트워크기반 구동력제어시스템 개발 및 성능평가에 관한 연구)

  • Ryu, Jung-Hwan;Yoon, Ma-Ru;Hwang, In-Yong;SunWoo, Myoung-Ho
    • Transactions of the Korean Society of Automotive Engineers
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    • v.14 no.5
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    • pp.47-57
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    • 2006
  • This paper presents a network-based traction control system(TCS), where several electric control units (ECUs) are connected by a controller area network(CAN) communication system. The control system consists of four ECUs: the electricthrottle controller, the transmission controller, the engine controller and the traction controller. In order to validate the traction control algorithm of the network-based TCS and evaluate its performance, a Hardware-In-the-Loop Simulation(HILS) environment was developed. Herein we propose a new concept of the HILS environment called the network-based HILS(Net-HILS) for the development and validation of network-based control systems which include smart sensors or actuators. In this study, we report that we have designed a network-based TCS, validated its algorithm and evaluated its performance using Net-HILS.

Improved Wheelset Speed Implementation of a Brake HILS System for a Railway Vehicle (철도차량 제동 HILS 시스템의 개선된 윤축속력 구현)

  • Lee, Dong-chan;Kang, Chul-Goo
    • Journal of Institute of Control, Robotics and Systems
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    • v.21 no.9
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    • pp.881-887
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    • 2015
  • The hardware-in-the-loop simulation (HILS) of a railway vehicle is crucial for overcoming the limitation of field tests of a railway vehicle. A brake HILS system for a railway vehicle was previously not able to test the performance of a speed-sensing system of a railway vehicle, since wheelset speeds were generated only by computer simulations. In this paper, we present a novel wheelset speed implementation of a brake HILS system for a railway vehicle. Four wheelset speeds of a brake HILS system for a car of a railway vehicle are implemented using four small-sized servomotors, whereas the speed sensors and pole wheels used in the brake HILS system are the actual ones of the railway vehicle. According to the simulated speeds of four wheelsets in the dynamic equations of motion, four servomotors generate wheel speeds in real time, and then the measured wheelset speeds are fed back to the computer simulation model. Moreover, in this paper, we improve the performance of wheelset speed measurement via the T method instead of the M method presently used in the field. The performances of wheelset speed implementation and speed-sensor operation are demonstrated by experimental works using a HILS system.

Verification of Flight Control Law Similarity and HILS Environment Reliability for Fighter Aircraft (전투기급 비행제어법칙 상사성 및 HILS 환경 신뢰성 검증)

  • Ahn, Seong-Jun;Kim, Chong-Sup;Cho, In-Je;Lee, Eun-Yong
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.37 no.7
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    • pp.701-708
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    • 2009
  • The flight control law of developed flight control computer(DFLCC) is developed based on operation flight program of advanced trainer aircraft full scale development final configuration. The flight control law design is used common use development tool in GUI(Graphic User Interface) environment. The flight control law transformed to C-Code is reflected in OFP. The OFP is verified by the standardized verification process. But, before standardized verification process, we need preliminary verification process such as similarity of flight control law and reliability of developed HILS. Similarity of flight control law is verified by comparing the aircraft response of advanced trainer aircraft and those of the developed control law. Also, reliability of developed HILS is verified by comparing the aircraft response of HILS and Non-real time simulation result. This paper verifies similarity of developed control law and reliability of HILS environment as comparing aircraft response.

로켓 모션테이블 실시간 모의시험

  • Sun, Byung-Chan;Park, Yong-Kyu;Choi, Hyung-Don;Cho, Gwang-Rae
    • Aerospace Engineering and Technology
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    • v.3 no.1
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    • pp.170-178
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    • 2004
  • This paper deals with six degree-of-freedom HILS(hardware-in-the-loop-simulation) of KSR-III rocket using a TAFMS(three axis flight motion simulator). This TAFMS HILS test is accomplished before main HILS tests in order to verify the control stability in the presence of TAFMS dynamic effects. The TAFMS HILS test includes initial attitude holding tests for INS initial alignment procedures, timer synchronization tests with an auxiliary lift-off signal, real-time calibration tests using an external thermal recorder, open-loop TAFMS operating tests, and final closed-loop TAFMS HILS tests using the TAFMS attitude measurements as inputs to the closed control loop. The HILS tests are accomplished for several flight conditions composed with nominal flight condition, TWD effect added condition, slosh modes and/or bending modes existing condition, and windy condition, etc.

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A Study on the Development of Experimental Method for ACC Using Powertrain HILS (파워트레인 HILS를 이용한 차량간격 제어장치의 실험기법 개발에 관한 연구)

  • 백창현;윤원석;장광수
    • Transactions of the Korean Society of Automotive Engineers
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    • v.7 no.6
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    • pp.165-173
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    • 1999
  • HILS system consists of hardwares which are engine and dynamometer and softwares which is vehicle model without the engine. It is well-known that because of engines's nonlinearity it is difficult to describe an engine exactly and not to lose it reality coincidently. But HILS system is the high technology that can compensate this weakness by using a real engine instead of model. The various experiments regarding the ACC which are not normally available for real vehicle tests have been performed by the HILS system. From the results , the HILS system is expected to decrease the experimental accident rate and save costs and time. Compared with simulation, HILS experimental results show similarities and expected to increase road capacity.

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