| 摘要 |
<p>An AC induction motor control system wherein two pulse trains are generated, one pulse train including a pulse for each increment of rotor movement, and the other pulse train having pulses occurring at a rate proportional to slip. The pulse trains are combined in a counter which controls formation of synthesized winding excitations developed from pre-recorded sine values. The slip pulse train is developed according to pre-recorded slip factors selected as a function of rotor speed and modified in accordance with desired torque.</p> |
