• 전기학회논문지
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• 제59권7호
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• pp.1309-1313
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• 2010

In this paper, we propose a novel guidance law for controlling an UAV(Unmanned Air-Vehicle) to follow a reference line in vertical plane. A kinematics model representing the relative motion of the UAV to the reference line is derived. And then LQR(Linear Quadratic Regulator) theory is applied to the model to derive the VLFG(Vertical Line Following Guidance) law. The resultant guidance law forms a gain-scheduling controller scheduled by a simple parameter $\sigma$ which is a function of the UAV's velocity, axial acceleration, gravity, and the slope of the reference line. Also derived is a stability condition for the $\sigma$ variation based on Lyapunov theory. Simulation results show that the proposed guidance law can be applied effectively to UAV guidance algorithm design.

• 한국군사과학기술학회지
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• 제16권6호
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• pp.733-738
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• 2013

A guidance kit transforming a general purpose bomb into an air-to-surface gliding bomb was developed. This guidance kit consists of a flight kit and a tail kit. Flight kit contains deployable wing, GPS/INS integrated navigation system, guidance and control system. Also this guidance kit was designed to use neither electrical nor mechanical interface with aircraft, and to increase dramatically the survivabilities of pilot and aircraft with the high accuracy and the mid-range non-powered gliding capability.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제19권3호
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• pp.365-386
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• 2015

In this article, the linear quadratic (LQ) optimal guidance laws with arbitrary weighting functions are introduced. The optimal guidance problems in conjunction with the control effort weighed by arbitrary functions are formulated, and then the general solutions of these problems are determined. Based on these investigations, we can know a lot of previous optimal guidance laws belong to the proposed results. Additionally, the proposed results are compared with other results from the generalization standpoint. The potential importance on the proposed results is that a lot of useful new guidance laws providing their outstanding performance compared with existing works can be designed by choosing weighting functions properly. Accordingly, a new optimal guidance law is derived based on the proposed results as an illustrative example.

• 대한공업교육학회지
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• 제37권1호
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• pp.87-106
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• 2012

이 연구는 전문계 고교 학생과 교원을 대상으로 진로지도 실태 및 개선 요구 사항에 대한 학생, 교원, 학생과 교원의 인식 차이를 분석하여 이를 토대로 전문계 고교의 효율적인 진로지도 방안을 개발하는 데 기초 자료를 제공하는 것을 목적으로 한다. 설문조사 대상은 서울특별시 전문계 고교 학생과 교원을 대상으로 실시하였다. 이 연구의 결과는 다음과 같다. 첫째, 전문계 고교 진로지도 정도에 대한 학생의 인식은 미흡하다고 나타났으며, 진학지도에 비해서 취업지도가 더 미흡하다고 응답하였다. 또한 진로지도 여건에 대한 학생의 인식은 대체로 부족하다고 나타났다. 둘째, 전문계 고교 진로지도 여건에 대한 교원의 인식은 진로지도를 위한 전담교사 배치, 진로상담실, 최신 진로 정보 확보 및 활용, 진로지도를 위한 인터넷 사용가능 정보 검색 시스템은 충분하다고 응답한 반면, 진로지도를 위한 시간, 진로상담실의 운영예산, 외부 유관 기관과의 연계는 부족하다고 응답하였다. 셋째, 진로지도 여건에 대해서 전반적으로 교장, 교감, 교사 순으로 충분하다고 응답하였다. 교장은 모든 문항에서 충분하다고 인식하고 있으며, 교감은 진로상담실의 운영 예산과 외부 유관 기관과의 연계에 대해서만 부족하다고 응답하였고, 교사는 진로지도를 위한 시간, 진로상담실의 운영 예산, 외부 유관 기관과의 연계에 대해서만 부족하다고 응답하였다. 또한 교장, 교감 교사 사이의 인식 차이 분석을 통해서 진로상담실의 운영 예산을 제외하고 교장은 교사에 비해서 충분하다고 인식하고 있었다. 넷째, 진로지도 여건에 대한 학생은 모든 문항에서 부족하다고 응답했지만, 교원은 진로지도를 위한 시간을 제외한 모든 문항에서 충분하다고 인식하였다. 이중에서 가장 큰 인식의 차이를 보인 것은 인터넷 사용 가능 정보검색 시스템으로 분석되었다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1993년도 한국자동제어학술회의논문집(국제학술편); Seoul National University, Seoul; 20-22 Oct. 1993
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• pp.456-461
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• 1993

In this paper, a new guidance law for a short-range air-to-air missile with constant thrust is presented. It is essentially based on the concept of proportional navigation. First, the theoretical guidance law is derived. Then, we show the technique for practical implementation of the guidance law. By a computer simulation, it is shown that the new guidance law gives better performance than the conventional proportional navigation.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 A
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• pp.115-118
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• 2003

In recent years, a receding horizon guidance law based on receding horizon control and optimal control is proposed. A receding horizon guidance law considering autopilot lag and constraints is proposed. The performance of receding horizon guidance law in the presence of target maneuvers is confirmed by simulation results. Through many simulation, a suitable selection of weighting matrix can minimize effect of disturbance, target acceleration. which is meaning of this paper.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.72-76
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• 2004

For successful route guidance, navigation systems should provide to users more realistic and actual information such as photographs than those in either 2-dimensional and 3-dimensional models. In this paper, we propose a method for servicing photographs for route guidance in navigation systems. The method includes how to acquire photographs with the most successful view for the guidance, how to construct link information among them and navigational map data, and how to provide the images to users efficiently.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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• pp.359-362
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• 1996

The guidance system which uses the line-of-sight(LOS) rate to guide the missile towards its target has been used to the conventional differential game, such as the pursuer-evader game. Proportional navigation guidance and its derivatives have been shown to be an effective LOS rate guidance system. In this paper, we have used the genetic algorithm to construct the guidance system for the pursuer-evader type differential game. Also we have proposed the prediction model to obtain the informations about the intention of future actions of the pursuer and the evader.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.620-628
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• 1991

For a Stationary moving-target. the design technique of guidance system for underwater vehicle with a seeker of st type is developed. Using perturbation theory, a new method which linearizes the nonlinear intercept geometry is proposed. On the basis of the linearized system modeling, LQ and PID design technique is used to determine the structure and gain of the guidance system. Some simulation results applied underwater engagement are represented to show that the proposed guidance law is superior to the other guidance laws as pursuit, Bang-Beng, PN APN.

• International journal of advanced smart convergence
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• 제12권1호
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• pp.31-40
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• 2023

This asymed drone controller is indispensable for two components: Guidance and Controller. In which the Ministry of Guidance will receive waypoints from which to form an orbit then combine the data with the current location of the vessel, thereby calculating and also supplying the controller to drive the vehicle to follow the outlined trajectory. This article will use the Line Of Sight (LOS) algorithm to design the Guidance and Controller sets. The result as well as the effectiveness of the controller will be shown through matlab/SIMULINK simulation.