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Algorithm for Power Stabilization in Rotary Drilling Systems

This paper deals with synthesis of a control algorithm for regulation of drilling power in rotary drilling systems. Under some simplifying assumptions, we present a two-steps control design approach where the drilling power is stabilized to a prescribed level through an appropriate control algorithm for angular velocity of the drill bit. Simulation results for the case of nonzero bluntness of the bit are presented that illustrate the validity of the proposed design approach.