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Robust Control of Spacecraft Rendezvous in Halo Orbits in the Three Body Problem

Fadaei Jouybari, Atena | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47671 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Pourtakdoust, Hossein
  7. Abstract:
  8. The problem of spacecraft rendezvous on periodic orbits around the L_1Lagrange point of the Earth-Moon system is investigated. For this purpose, the nonlinear relative equations of motion are drived within the contex of the Circular Restricted Three Body (CRTB) problem. Subsequently, several types of rendezvous missionas well as control teqniques are considered for analysis and simulation. Application of different control approaches allows for partial verification as well as comparison of results achieved with various teqniques. The considered control approaches include optimal closed loop Linear Quadratic Regulator (LQR), nonlinear Feedback Linearazation (FL) as well as the nonlinear Integral Sliding Mode (ISM). The results of these various control strategiesare compared to identify the most appropariate scheme for each of the different rendezvous mission studied in the current research. In addition, the effect of several perturbation such asenvironmental forces, actuator saturation, measurement errors as well as sampling interval are analayzed for robustness and accuracy in achieving the desired final states and the level of energy expenditure
  9. Keywords:
  10. Periodic Orbits ; Linear Quadratic Control ; Linear Quadratic Requlator (LQR) ; Feedback Linearization ; Sliding Mode Control ; Perturbation Method ; Restricted Three Body Problem (RTBP)

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