ARANGEMENT FOR SPEED REGULATION OF AC ELECTRIC MOTOR

摘要

To get precise AC servo motor control, the armature reaction has been compensated by hardware method delaying time or software providing compensated output using ROM table with necessary data. Both methods hare problems in transient state and in different type of machine. New method can effectively compensate to solve those problems. The compensator comprises of compensating signal detectors, i.e. differentiator (10) for transient state and frequency voltage tranducer (20) for steady-state, and a summing amplifier (30) as syntheisizer. Both output signals of differentiator with current input (I) and of the transducer with encoder pulse input (P) are summed up in the synthesizer to generator compensating signal.