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PI Controller Design and Aeroservoelastic Analysis of a Smart Fin Including Piezoelectric Actuator for Performance Improvement
성능 개선을 위한 압전재료 구동 지능형 조종익의 PI 제어기 설계 및 서보공력탄성학 해석

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dc.contributor.advisor신상준-
dc.contributor.author강유진-
dc.date.accessioned2017-07-14T03:42:03Z-
dc.date.available2017-07-14T03:42:03Z-
dc.date.issued2016-08-
dc.identifier.other000000136047-
dc.identifier.urihttp://hdl.handle.net/10371/123903-
dc.description학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2016. 8. 신상준.-
dc.description.abstractFor a lighter aerial vehicle, an actuator made of smart material such as piezoelectric material can be used to operate a control surface. The piezoelectric material in the actuator can adjust the pitch angle of the control surface by being transformed due to voltage difference, and the control surface of such type is called the smart fin. In the present paper, starting from the fundamental structural analysis, the aeroelastic and aeroservoelastic stability, and structural response simulations of the smart fin control system are performed by integration of MSC.NASTRAN, ZAERO and MATLAB/Simulink. In the process, PI controller is designed to ensure the flight stability and to maintain the pitch angles of the smart fin under a specific flight conditions. And then, the complete closed-loop control system of the smart fin is constructed and analyzed in both ZAERO and MATLAB/Simulink. The controllers develop the flight and control performances by increasing the flutter boundary and decreasing settling time of the step responses of the smart fin.-
dc.description.tableofcontentsI. Introduction 1
1.1 Backgrounds and Motivations 1
1.1.1 Backgrounds of Aeroservoelasticity 1
1.1.2 Backgrounds of Smart Structures 3
1.1.3 Motivations of the Present Thesis 5
1.2 Objectives of the Present Thesis 6

II. Methodology 17
2.1 Descriptions of the Subject of Study 17
2.2 Structural Analysis of Smart Fin 25
2.3 Aeroelastic Analysis of Smart Fin 25
2.4 Aeroservoelastic Modeling of Smart Fin Control System 27
2.5 Theoretical Process of the Aeroservoelastic Analysis by State-Space Approach 27

III. Results 36
3.1 Structural Analysis of Smart Fin 36
3.1.1 Static Structural Analysis 36
3.1.2 Structural Modal Analysis 36
3.2 Aeroelastic Stability Analysis of Smart Fin 42
3.2.1 Aerodynamics of the Smart Fin Using ZAERO 42
3.2.2 Flutter Analysis of the Smart Fin Using ZAERO 42
3.3 Open-Loop Aeroservoelastic Analysis of Smart Fin 48
3.3.1 Open-Loop Aeroservoelastic Analysis in the Frequency Domain 49
3.3.2 Open-Loop Aeroservoelastic Analysis in the Time Domain 53
3.4 Closed-Loop Aeroservoelastic Analysis of Smart Fin 57
3.4.1 Closed-Loop System Built by ZAERO 57
3.4.2 Closed-Loop System Built by MATLAB/Simulink 58

IV. Conclusions 66

V. Future Works 67

Reference 68

국문 초록 71
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dc.formatapplication/pdf-
dc.format.extent2585468 bytes-
dc.format.mediumapplication/pdf-
dc.language.isoen-
dc.publisher서울대학교 대학원-
dc.subjectSmart Fin-
dc.subjectPiezoelectric Material-
dc.subjectRational Function Approximation-
dc.subjectAeroelasticity-
dc.subjectFlutter-
dc.subjectAeroservoelasticity-
dc.subjectPI Controller-
dc.subjectMATALB/Simulink-
dc.subjectZAERO-
dc.subjectModal Analysis-
dc.subject.ddc621-
dc.titlePI Controller Design and Aeroservoelastic Analysis of a Smart Fin Including Piezoelectric Actuator for Performance Improvement-
dc.title.alternative성능 개선을 위한 압전재료 구동 지능형 조종익의 PI 제어기 설계 및 서보공력탄성학 해석-
dc.typeThesis-
dc.contributor.AlternativeAuthorYoojin Kang-
dc.description.degreeMaster-
dc.citation.pagesV, 67-
dc.contributor.affiliation공과대학 기계항공공학부-
dc.date.awarded2016-08-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Theses (Master's Degree_기계항공공학부)
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