Flight dynamic simulation programs are useful to estimate dynamic performances of an aircraft and to develop flight control laws. Usually, simulation programs were developed by the causal programming method which required a distinct relationship between inputs and outputs. Recently, a new approach, acausal programming, has been developed and applied in many fields to deal with the disadvantages of causal simulation programs. The authors have developed a flight dynamic simulation program by using Modelica which is an acausal programming language. The developed program has been tested by several simulations for attitude and velocity hold control. It has been shown that servo systems for control surfaces can be designed by this program. The level of detail of models can be easily increased by using the library of Modelica. The simulation program can be used to develop unmanned aerial vehicles and rotor crafts.
목차
Abstract 1. 서론 2. 모델리카(Modelica) 언어 2.1 개발환경 2.2 주요 특징 3. 시뮬레이션 프로그램 구성 3.1 시뮬레이션 구조 설계 3.2 커넥터(connector) 설계 3.3 관련 방정식 4. 시뮬레이션 테스트 5. 결론 References
키워드
Modelica (모델리카 동역학 모델링 언어)Acausal simulation (비인과적 시뮬레이션)Nonlinear 6 degree of freedom flight dynamic simulation (비선형 6자유도 비행 동역학 시뮬레이션)
저자
진재현 [ Jae-hyun Jin | Member, Sunchon National University, Aerosapce Engineering Division ]
Corresponding Author
백승길 [ Seung-Kil Paek | Korea Aerospace Research Institute, Rotorcraft Team ]