FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering, namely, to servo driver. Servo driver comprises setting unit 1, integral regulator 2, proportional regulator 3, proportional-differential regulator 4, power converter 5, electric motor 6 with actuator 7, position sensor 8, differentiation unit 9, proportional link 10, adder 11, adder-subtractor 12, comparison units 13 and 14 and multiplexer 15. In servo driver control signal is generated by rotation EMF and electric motor maximum permissible current value.
EFFECT: technical result consists in providing motor current limitation in servo driver at maximum permissible value level.
1 cl, 1 dwg
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