METHOD FOR ELECTRIC MOTOR ROTARY SHAFT PHASING AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2013 - IPC H02P5/52 G05D13/62 

FIELD: electrical engineering.

SUBSTANCE: in the course of the electric motor rotary shaft phasing, two additional signals are generated at the output of the pulse frequency phase discriminator (PFFD)(4) at the time moments of arrival of two pulses of f_OP frequency between two adjacent pulses of f_OS frequency. In case of absence of pulses of f_OP frequency between two adjacent pulses of f_OS frequency, one determines the magnitude of frequency misalignment Δf of f_OP and f_OS frequency pulses in the frequency misalignment determination unit (11) by way of counting pulses of f_OP frequency between two adjacent pulses of additional signals generated at the output of PFFD (4). Δf having reached the preset positive value, supply of f_OP pulses is discontinued and the electric motor (6) is switched from the travelling to the braking mode. At the moment of time determined based on the obtained Δα_H and Δω_H values processing, supply of f_OP pulses is resumed. Δf having reached the preset negative value, supply of f_OS pulses is discontinued and the electric motor (6) is switched from the braking to the travelling mode. At the moment of time determined based on the obtained Δα_H and Δω_H values processing, supply of f_OS pulses is resumed.

EFFECT: process simplification.

2 cl, 1 dwg