Guidance laws using vector field to control arrival angle, time, and speed for UAVs = 벡터필드를 이용한 무인기의 도달 각도, 시간 및 속력 제어를 위한 유도법칙 연구

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In this dissertation, I propose 5 new vector fields, and apply to guidance laws for an aircraft. Primary vector field approaches are constructed by summations of repulsive and attraction vectors to arrive at a desired position without collision with obstacles. Advanced vector field approaches were designed to draw simple trajectories, and the fields were fixed. However, the vector field approaches in this dissertation are extended more, and then it can achieve much more purposes. These approaches can solve path planning and guidance problems, simultaneously with the variable fields. Examples of applications and simulation results verify that these approaches are feasible and useful. The first application is the arrival angle (or impact angle), time (or impact time), and speed control. It can be applied to various missions such as an approach for landing, rendezvous for formation flying or aerialrefueling, and so on. The second application is simultaneous target capture and standoff target tracking with regular spacing among aircraft. When gunships such as AC-130 attacks ground targets simultaneously and from the all sides, the targets could be damaged fatally. The third application is path following. If the vector fields in this dissertation are applied to path following, aircraft can archive more constraints than the previous path following guidance laws based on vector fields, that is, a utilized area of unmanned aircraft might be enlarged. The fourth application is target localization. There are many researches about path planning and a guidance law for target localization; however, optimal problems should be solved in the most cases. The vector fields for target localization is constructed based on the solutions of optimal problem, and they can be applied even in unmanned aircraft with low computational power.
Advisors
Bang, Hyo-Choongresearcher방효충
Description
한국과학기술원 : 항공우주공학전공,
Publisher
한국과학기술원
Issue Date
2013
Identifier
566073/325007  / 020095139
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 항공우주공학전공, 2013.8, [ viii, 118 p. ]

Keywords

Arrival Time; Arrival Speed; Impact Angle; Impact Time; 무인항공기; 유도법칙; 리아프노브 벡터필드; 벡터필드; 벡터필드 유도; 도착각; 도착시간; 도착속력; 충돌각; 충돌시간; Unmanned Aerial Vehicle (UAV); Arrival Angle; Vector Field Guidance; Unmanned Aircraft (UA); Guidance Law; Lyapunov Vector Field

URI
http://hdl.handle.net/10203/196160
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=566073&flag=dissertation
Appears in Collection
AE-Theses_Ph.D.(박사논문)
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