• 한국ITS학회 논문지
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• 제18권6호
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• pp.1-10
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• 2019

교통신호 평가시스템 HILS는 교통신호 시스템을 평가하기 위해 만들어진 시스템으로, 실제의 교통신호 환경을 모사하는 시뮬레이터와 교통신호 제어기를 모사하는 LCS를 이용하여, 실제 환경을 모사하는 시뮬레이션을 구동하는 기능을 갖는다. 본 연구는 교통신호 제어기의 기능을 모사하며 센터시스템과 교통시뮬레이터(VISSIM)에 연결되어 동작하는 LCS의 설계에 대한 것이다. LCS의 프로그램 설계는 이식성이 좋은 파이썬 언어를 이용하였으며, 약간의 코드 수정을 통해 PC 환경의 윈도우에서 동작하는 버전과 임베디드 환경의 리눅스에서 동작하는 두 가지 버전으로 설계하여 두 가지 에서의 동작을 비교 분석하였다. 본 연구에서 PC환경의 윈도우에서 LCS 사용시의 한계점을 분석하였으며, 규모가 큰 용량에서 임베디드 환경의 리눅스를 통한 시뮬레이션의 용이함을 확인하였다.

• 한국자동차공학회논문집
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• 제14권4호
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• pp.199-206
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• 2006

Real time vehicle dynamics models have been developed with the subsystem synthesis method for intelligent vehicle HILS system. Three different models for solving subsystem equations are compared in order to find out the best suitable model for HILS applications. The first model is based on the generalized coordinate partitioning technique, and the second one is on the approximate function approach, and the last one is on the constraint stabilization method. To investigate the theoretical efficiency of three proposed methods, arithmetic operators used in the formulations of three models are counted. Bump run simulations with half-sine bump have also carried out with three different models to measure the actual CPU time to validate theoretical investigation.

• 한국정밀공학회지
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• 제32권5호
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• pp.447-454
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• 2015

Design and application of hardware-in-the-loop simulation (HILS) for design of CNC-controlled machine tool feed drives is discussed. The CNC machine tool is a complex mechatronics system where the complexity results from the software-based controller composed of a variety of functionalities and advanced control algorithms. Therefore, using a real CNC controller in the control simulation has merits considering the efforts and accuracy of the simulation modeling. In this paper challenges in HILS for a CNC controlled feed drive, such as minimization of time delay and transmission error that are caused by discretization of the feed drive model, is elaborated. Using an experimental HILS setup of a machine tool feed drive applications in controller gain selection and CNC diagnostics are presented.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2013년도 추계학술대회 논문집
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• pp.483-488
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• 2013

The psychoacoustic quality of ABS is now considered more important than before as the focus of recent ABS function is expanded to basic function from typical emergency function. Thus, the automotive parts manufacturing companies are actively working to improve NVH (Noise, Vibration, and Harshness) in ABS module. In terms of time, test place, and cost, however, it is very inefficient to have all the operating noise validation test in real vehicle configuration especially for partially improved ABS module. To contribute to reducing the development period and to grasping the improvements faster, this research presents the study of a correlation to predict ABS operating noise inside vehicle via HILS rig test. The regression equation in this paper was statistically drawn from using Minitab S/W, and based on that equation, the noise spectrum of vehicle interior was analogized.

• 전기전자학회논문지
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• 제22권4호
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• pp.1073-1078
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• 2018

4차 산업혁명에 대한 관심도가 높아지면서, 현실에 존재하는 요소들과 가상에 존재하는 요소들이 상호작용 하는 CPS 라는 개념이 중요한 기술로 주목받고 있다. 전기자동차, 자율주행, 스마트 팩토리나 스마트 그리드 시스템과 같은 복잡한 구조를 가진 시스템들은 4차 산업혁명의 핵심 기술 분야로 간주되고 있으며, 이를 개발하기 위해 많은 연구가 이루어지고 있다. 하지만 시스템 구성요소들의 복잡한 연결은 개발을 어렵게 하고, 개발의 신뢰성을 보장하기 쉽지 않다. 시스템의 신뢰성은 자율주행자동차 경우 사람의 안전 직결되며 실제 자동차의 하드웨어와 ADAS의 소프트웨어의 연결된 검증이 필수적이다. 본 논문에서는 복잡한 하이브리드 시스템의 신뢰성 있는 검증을 위해 HILS를 지원하는 분산 시뮬레이션 미들웨어를 제안한다.

• 제어로봇시스템학회논문지
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• 제14권8호
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• pp.824-836
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• 2008

Relaxed static stability(RSS) concept has been applied to improve aerodynamic performance of modern version supersonic jet fighter aircraft. Therefore, flight control systems are necessary to stabilize an unstable aircraft, and provides adequate handling qualities and achieve performance enhancements. Standard FCSDVP (Flight Control System Design and Verification Process) is provided to reduce development period of the flight control system. In addition, if this process is employed in developing flight control system, it reduces the trial and error for development and verification of flight control system. This paper addresses the flight control system design and verification process for the RSS aircraft utilizing design goal based on military specifications, linear and nonlinear system design and verification based on universal software, handling quality test based on HILS(Hardware In-the-Loop Simulator) environment, and ground and flight test results to verify aircraft dynamic flight responses.

• 소음진동
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• 제11권1호
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• pp.41-48
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• 2001

This paper presents vibration control performance of a passenger vehicle featuring magneto-rheological (MR) suspension units. As a first step, a cylindrical shock absorber is designed and manufactured on the basis of Bingham Property of a commercially available MR fluid. After verifying that the damping force of the shock absorber can be controlled by the intensity of magnetic field(or input current), it is applied to a full-car model. An optimal controller is then formulated to effectively suppress unwanted vibration of the vehicle system. The control performances are evaluated via hardware-in-the-loop simulation(HILS), and presented in both time and frequency domains.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.339-340
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• 2015

본 논문에서는 HVDC 제어 시스템의 기능 검증을 위해 구축한 RTDS 기반의 HILS(Hardware-In-the Loop Simulation)시스템 및 시험 결과를 소개하였다. MMC 기반 VSC HVDC는 다수의 직렬 연결된 SM(Sub-Module)을 개별 제어해야 하므로 기존의 LCC HVDC 및 2/3-Level 컨버터 기반의 VSC HVDC와 같은 설비들보다 훨씬 더 복잡한 VBE 구조를 가지고 있다. 또한 짧은 시간 내에 정밀한 제어가 가능해야 하므로 높은 제어 정밀도가 요구된다. (주)효성에서는 제어 시스템의 성능 검증을 위해 RTDS 기반의 HILS(Hardware-In-the Loop Simulation)시스템을 구축하였으며, 이를 이용하여 HVDC 제어 시스템의 성능 시험을 수행하였다. 본 논문에서는 구축된 RTDS 기반의 HILS 시스템 및 시험 결과를 소개하였다.

• 제어로봇시스템학회논문지
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• 제16권9호
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• pp.905-912
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• 2010

Modern version of advanced supersonic fighter have ATCS (Automatic Thrust Control System) to maximum flight safety, fuel efficiency and mission capability the integrated advanced autopilot system such as TFS (Terrain Following System), GCAS (Ground Collision Avoidance System) and AARS (Automatic Attitude Recovery System) and etc. This paper addresses the design and verification of ATCS based on advanced supersonic trainer in HILS (Hardware In the Loop Simulator) with minimum hardware modification to reduce of development cost and maintain of system reliability. The function of ATCS is consisted of target speed hold mode in UA (Up and Away) and angle of attack hold mode in PA (Power Approach). The real-time pilot evaluation reveals that pilot workload is minimized in cruise and approach flight stage by ATCS.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1729-1734
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• 2005

The use of gantry crane systems for transporting payload is very common in industrial application. However, moving the payload using the crane is not an easy task especially when strict specifications on the swing angle and on the transfer time need to be satisfied. To overcome this problem, this paper describes development of an intelligent gantry crane system based on the mechatronic design. A lab-scale gantry crane is designed and then its intelligent controllers are developed. Fuzzy logic controllers are adopted, designed and implemented for controlling payload position as well as the swing angle of the gantry crane. The performance of the intelligent gantry crane system is evaluated on a hardware-in-the-loop simulation (HILS) environment. Moreover robustness of the proposed system is also evaluated. The result shows that the intelligent gantry crane system designed based on the mechatronic design approach has better performance compared with the automatic gantry crane system controlled by classical PID controllers. Moreover simulation result shows that the intelligent gantry crane system is more robust to parameter variation than the automatic gantry crane system.