ELECTRIC DRIVE Russian patent published in 2005 - IPC

FIELD: electro-automation.

SUBSTANCE: proposed electric drive has independently excited dc motor, current sensor, power amplifier, current regulator, speed governor, speed selector and sensor, comparison element, controlled switch, and voltage sensor; newly introduced in this drive are second comparison element, nonlinear functional transformer implementing function, where ε, u₂ are first and second input signals and U₁ is voltage corresponding to logical 1 level, as well as scaling amplifier, adder, and limiting unit whose input is connected to output of first comparison element and output, to first input of adder whose second input is connected through controlled switch to output of second comparison element and output, to input of speed governor; addition input of second comparison element is connected to output of speed selector and subtraction input, to output of voltage sensor; control input of switch is connected to output of nonlinear functional transformer whose first input is connected to output of first comparison element and second input, to speed selector output through scaling amplifier.

EFFECT: enhanced reliability of speed control.

1 cl, 2 dwg