Математическая модель движения итерационного двухканального электропривода механизма подачи с двумя винтовыми парами

Abstract

Variant of the simplified diagram of two-motor reducerless feed design with two screw-nut pairs (SNP), realized mechanical backlash-free transmission of movements with two degrees of freedom is proposed. The kinematical diagram and movement mathematical model (including negative dynamic interconnection between control channels) of loaded two-channel electric drive of feed, constructed by iterative principle on basis of two-motor machine tool feed with two SNP are obtained. The operators of compensating cross connections (compensators of channels dynamic interconnection), providing full autonomy of control channels operation for the two-channel electric drive of feed with two SNP are determined. It is shown that the obtained operators of compensators have the possibility of their real technical realization. Concretization of mathematical model realized applying to the steady movement modeling of the iterative two-channel electric drive with two SNP and with standard tuning of channels, which is intended for longitudinal feed of the metal-cutting machine tool model 24K70AF4 work piece in working mode (face milling).