• 제목/요약/키워드: Maneuvering system

검색결과 376건 처리시간 0.023초

군용 기동장비 내구 신뢰성 향상을 위한 동력장치 내구시험로 설계 (The Design of New Cross Country Test Courses for Powertrain System of Military Vehicle)

  • 이정환;이상호;조진우;강이석
    • 한국군사과학기술학회지
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    • 제20권3호
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    • pp.362-368
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    • 2017
  • The endurance test is important to evaluate and predict defects of the vehicles. In particular, in order to improve the reliability of the endurance test for the powertrain system of military vehicles, the driving load is measured and analyzed at test courses and maneuvering roads. As a result, new test courses for powertrain system is additionally needed to improve test reliability. In this paper, it shows that new test courses for powertrain system is designed and constructed using the measuring and anlayzing result between CPG test courses and army maneuvering roads.

JTC를 이용한 이동 표적 추적 시스템에 관한 연구 (A Study on the Moving Traget Tracking System using Joint Transform Correlator)

  • 이상인;서춘원;양성현;이기서;김은수
    • 한국통신학회논문지
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    • 제17권7호
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    • pp.749-757
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    • 1992
  • 본 논문에서는 maneuvering 하는 이동 표적을 실시간으로 추적하기 위한 보다 효과적인 접근 방법으로, 방대한 입력 표적 영상 데이터를 몇 개의 간단한 상관신호로 변환이 가능한 광 JTC(Joint Trasform Correlator)를 이용하여 실시간 이동 표적추적 시스템을 구현하였다. 실시간 구현을 위해 고해상도를 갖는 LCD(Liquid Crystal Display) 공간 광 변조기를 사용하여 광 JTC를 구성하고, 상관 첨두치의 배경 잡음에 대한 영향을 효과적으로 감소시키기 위한 이진화 방법으로 mean 방법을 사용하였으며, maneuvering하는 이동 표적에 대한 추적 실험을통해 광 JPC를 이용한 실시간 이동 표적 추적 시스템의 구현 가능성을 제시하였다.

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FCM 클러스터링 기반 비선형 기동표적의 외란분석 알고리즘 (External Noise Analysis Algorithm based on FCM Clustering for Nonlinear Maneuvering Target)

  • 손현승;박진배;주영훈
    • 전기학회논문지
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    • 제60권12호
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    • pp.2346-2351
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    • 2011
  • This paper presents the intelligent external noise analysis method for nonlinear maneuvering target. After recognizing maneuvering pattern of the target by the proposed method, we track the state of the target. The external noise can be divided into mere noise and acceleration using only the measurement. divided noise passes through the filtering step and acceleration is punched into dynamic model to compensate expected states. The acceleration is the most deterministic factor to the maneuvering. By dividing, approximating, and compensating the acceleration, we can reduce the tracking error effectively. We use the fuzzy c-means (FCM) clustering as the method to divide external noise. FCM can separate the acceleration from the noise without criteria. It makes the criteria with the data made by measurement at every sampling time. So it can show the adaptive tracking result. The proposed method proceeds the tracking target simultaneously with the learning process. Thus it can apply to the online system. The proposed method shows the remarkable tracking result on the linear and nonlinear maneuvering. Finally, some examples are provided to show the feasibility of the proposed algorithm.

견실한 H$\infty$필터를 이용한 기동표적의 추적 (Tracking maneuvering target using robust H$\infty$filter)

  • 김준영;유경상;권오규
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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    • pp.426-429
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    • 1997
  • This paper proposes a robust H$_{\infty}$ tracking filter to improve the unacceptable target tracking performance for systems with parameter uncertainties. Also, we use here the input estimation approach to account for the possibility of maneuver. Simulation results show that the robust H$_{\infty}$ tracking filter which is proposed here to solve the systems with all system parameter uncertainties, has a good tracking performance for a maneuvering target tracking problem.m.

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클러터 환경하에서 Perception Net을 이용한 기동 표적 추적 (Maneuvering Target Tracking by Perception Net in Clutter Environment)

  • 황태현;최재원;홍금식
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1995년도 추계학술대회 논문집
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    • pp.602-605
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    • 1995
  • In this paper, we provide the new alogorithm for maneuvering target tracking in clutter environment using perception net. The perception net, as a structural representation of the sensing capabilities of a system, may supply the constraints that target must be satisfied with. The results form perception net applying to IMMPDA are compared with those obtained from IMMPDA.

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입력 추정을 하는 가변 차원 필터에 의한 기동 표적의 추적 (Maneuvering target tracking using the variable dimension filter with input estimation)

  • 서진헌;박용환
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
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    • pp.108-113
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    • 1991
  • In this paper, an improved method for tracking maneuvering target is proposed. The proposed tracking filter is constructed by combining the input estimation approach with the variable dimension filtering approach. In this approach, the filter also provides the estimated time instant at which target starts maneuver, when the target maneuver is detected. Using this estimated maneuvering time, the maneuver input is estimated and the tracking system changes to the maneuver model. Simulations are performed to demonstrate the efficiency of the proposed tracking filter.

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시선좌표계에서의 분리추적필터를 이용한 개선된 입력추정기법 (A practical adaptive tracking filter for a maneuvering target)

  • 성태경;황익호;이장규;이양원;김경기
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 19-21 Oct. 1992
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    • pp.424-429
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    • 1992
  • A practical adaptive tracking filter for a maneuvering target is proposed in this paper by combining a modified input estimation technique with pseudo-residuals and a decoupled tracking filter in line-of-sight Cartesian coordinate system. Since the adaptive tracking filter has decoupled structure and computes maneuver input estimates for each axis separately, it requires much less computations compared with the coventional tracking filter with MIE technique without degrading performance. Also, since pseudo-measurement noises in line-of-sight Cartesian coordinate system are much less correlated compared with those of inertial Cartesian coordinate system, the proposed tracking filter produces less false alarms or miss detections to improve the performance.

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다중표적 추적을 위한 TWS추적필터에 관한 연구 (A Study on the TWS Tracking Filter for Multi-Target Tracking)

  • 이양원;서진헌;이장규
    • 대한전기학회논문지
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    • 제41권4호
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    • pp.411-421
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    • 1992
  • In the conventional track while scan (TWS) system, there are two major functions to be performed : detection and tracking. These two functions are normally designed and optimised independently. So TWS algorithm ignores the available decision features that can help in resolving the plot-to-track association ambiguity. Therefore conventional TWS system cna't track the targets in a densed multi-target environment. This paper presents a new TWS algorithm for multi-target track to solve the existing TWS system problem in clutter environment. The algorithm proposed in this paper is derived by modifying the part of joint probabilistic data association (JPDA) algotithm to get the one to one correspondence instead of multiple correspondence and combined with maneuvering detection logic so that it could also track the low maneuvering targets. Simulations to confirm the performance are done in crossing, parallel and maneuvering target. The proposed algorithm was successfully tracking targets above target situations.

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Ship Collision Avoidance System Considering Ship' Maneuverability

  • Lee, Seung-Keon;Surendran, S.;Im, Nam-Kyun;Hwang, Sung-Jun
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.1
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    • pp.95-100
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    • 2006
  • A ship collision avoidance system is developed to control the avoidance action of ship actually and properly in wind forces. The 4-DOF maneuvering equations of motion ar derived to catty out the simulation of the motion of a ship, and the wind forces are considered as the external forces in the simulation. This study suggests a new avoidance system that could include the ship's maneuvering characteristics.

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