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has been cited by the following article:

• TITLE: Attitude Stabilization Using Modified Rodrigues Parameters without Angular Velocity Measurements

  AUTHORS: Awad El-Gohary, Tawfik El-Sayed Tawfik

  KEYWORDS: Attitude Control, Rotors with Frictions Modified Rodrigues Parameters

  JOURNAL NAME: World Journal of Mechanics, Vol.1 No.2, April 20, 2011

  ABSTRACT: The optimal stabilization of a rigid body motion without angular velocity measurements is considered with the help of three internal rotors that effected by internal frictions. In this paper, the orientation of the body will be described in terms of the Modified Rodrigues parameters (MRPs). The optimal control law which stabilizes asymptotically this motion and minimizes the require like-energy cost is obtained in terms of the MRPs. Numerical study and simulation are introduced.