The impact of counter-electromotive force of the motor on vibration damping processes in electromechanical systems

Comprehensive approach to the design of modern electromechanical systems and complexes is required to increase the efficiency and the quality of engineering units with high-speed electric drives. The complexity of studies of modern electric drives increases while changing the parameters of control objects, deflexion and clearances of mechanical transmissions, friction forces and other factors that complicate the control algorithms. To improve the quality of the control of modern electromechanical systems it is often required to perform more precise calculation of the impact of counter-electromotive forces of motors on the operation of electric drives. We analyzed the impact of the motor counter-electromotive forces on electric drives processes with subordinate coordinate control and summarized the results of studies concerning the impact of the motor counter-electromotive forces on the operation of electric drives with pure rigid mechanical transmissions. We also specified conditions and factors deteriorating the quality of electric drive control due to the impact of the motor counter-electromotive forces while changing the control and disturbance effects. We studied the impact of the motor counter-electromotive forces on the coordinate vibrations of the electromechanical systems with tough mechanical transmissions. The conditions and parameters of current and speed controllers of the subordinate control systems were specified when it is possible to neglect the impact of the motor counter-electromotive forces on the damping ability of electric drives in electromechanical systems with elastic coupling.