METHOD OF AUTOMATIC REGULATION OF ELECTRIC DRIVE COORDINATE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC H02P7/292 G05B11/01 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, and can be used to control electric drives of DC used in support-rotary devices, metalworking machines, metallurgical production mechanisms. In the method of automatic control of electric drive coordinates, speech control of electric drive, depending on its specified and measured value, is carried out according to the proportional-integral-differential law, resulting control signal is calculated, resulting control signal is limited, carry out the interruption of integration in law of speed control depending on specified and measured value of the speed, the resulting control signal to its limitations and the resulting control signal after the limitation, interrupt the action of the law of speed control depending on the measured value of current, setpoint of the current limit and regulate the current through relay law depending on the measured current value and the setpoint of the current limit. Device comprises a speed controller of the electric drive (1) whose output is connected to the first input of the first register (2) whose first output is connected to the input of the proportional control element (3), the second output is connected to the input of the differential control element (4), and the third output is connected to the first input of relay switch (5). Second input of the relay switch (5) is connected to the output of the first zero former (6). Output of the relay switch (5) is connected to the input of the integral control element (7). Proportional control element (3), differential control element (4) and integral control element (7) form the proportional-integral-differential controller of the electric motor speed. Output of the proportional control element (3) is connected to the first input of the second register (8), the output of the differential control element (4) is connected to the second input of the second register (8), and the output of the integral control element (7) is connected to the third input of the second register (8). First output of the second register (8) is connected to the first input of the controlled limiter (9). Second output of the second register (8) is connected to the third input of the relay switch (5). Second input of controlled limiter (9) is connected to the output of the second zero former (10). First output of the controlled limiter (9) is connected to the input of the power converter (11). Second output of the controlled limiter (9) is connected to the fourth input of the relay switch (5). Output of the power converter (11) is connected to a current sensor (12), which in turn is connected to electric drive (13). Speed sensor (14) and actuating mechanism (15) are mechanically connected to the electric motor (13). Information output of the current sensor (12) is connected to the input of a nonlinear unit of relay type (16). Output of the nonlinear unit of relay type (16) is connected to the third input of the controlled limiter (9). Information output of the speed sensor (14) is connected to the second input of the first register (2).

EFFECT: improving speed and accuracy of regulation electric drive coordinates, simplification of speed and current regulation.

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