Considered nonsymmetric mode of drill bit oscillations when forming a unipolar electromagnetic torque on each cycle oscillations of dynamically balanced drill . Developed a method for estimating speed of rotation drill around its axis when working in the nonsymmetric mode at first approximation .
Mathematical and simulation models of drill bit oscillations. Method for calculating the model works elastic, electromagnetic and load torques has been developed. Simulation results of autoresonant regimes with asymmetric excitation oscillations of dynamically counter balanced drilling string on the cargo-carrying cable drill bit are represented.
Mathematical and imitating models of electromechanical systems return-rotary movement are considered, results of imitating modelling in systems with dry and viscous frictions are resulted, the settlement scheme for dynamically counterbalanced chisel shell on cargo carrying cable is resulted.
