| 摘要 |
FIELD: electricity. ^ SUBSTANCE: invention relates to the field of electric engineering and may be used in control and monitoring systems. Electric follower drive comprises actuator mechanism, with synchronous motor, synchronous generator and sensor of rotor magnetic flow position; electronic unit of control with input cascade with the first comparison unit, preliminary cascade and power amplifier; current sensor of each motor phase; main and additional sources of supply and converter of synchronous generator signals; input device with proportional differentiating link, the second unit of comparison and integral proportional link; device for separation of amplitude of input signal of preliminary cascade; generator of input signal sign; switch of phase alternation order; converter of power amplifier output current; unit of error signal control; sensor of power amplifier consumption current value and blocking device; mechanical gear with output stem inbuilt into actuator mechanism; detector of output stem position and instrument reductor; supplying generator and converter of signals from position sensor of output stem; at the same time actuator mechanism is arranged on the basis of three-phase synchronous motor, and power amplifier is arranged in the form of three-phase bridge inverter; position sensor of rotor magnetic flow is arranged in the form of three microchips with Hall EMF sensors, every of microchips is installed under cog of according phase of synchronous generator winding; synchronous generator windings are arranged on three neighboring cogs free from windings of synchronous motor, and are connected as "star", common point of which is connecte to the middle output of additional source of power supply; converter of synchronous generator signals is arranged on electronic switches, inputs of which via resistors are connected to output of syncronous generator, outputs are combined and form output of specified converter, and control circuits of switches are connected to output of according microchips of position sensor of rotor magnetic flow. ^ EFFECT: simplified design of actuator mechanism and electronic circuit of drive and expanded field of application. ^ 2 cl, 5 dwg |
