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A novel vector control structure is proposed to provide an extension of the well-known conventional three single channels. The rigid body dynamics are established in the form of vectors, which are the velocity vector and angular velocity vector in a body-fixed coordinate frame. Vector backstepping control and multivariable fixed-time sliding mode disturbance observers are then proposed on the dynamics to ensure that the disturbances and uncertainties can be estimated and cancelled in a fixed time, and the states of the system are driven towards the expected manifolds, and stay there for all future times. 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