| 摘要 |
PURPOSE:To control the current stably and accurately at low cost such that the total sum at a current control section, for controlling the current flowing through the stator winding of a three-phase current servo, becomes zero positively. CONSTITUTION:Currents are detected for two phase windings 1, 2 of a three- phase motor and the differences from a target value are detected by means of subtractors 4, 5. The differences are employed, as control values, in the feedback control of current control sections 10, 11 for two phase stator windings 1, 2. The inverted sum of the control values is employed, as a control value, in the feedback control of the current control section 12 for the remaining phase stator winding 3. |
