| 摘要 |
The circuit (1) has a motor modeling device (18) determining a phase difference signal (19) under observance of ohmic resistance (R), inductance (L) and constant (KE) of rotor flux, from a drive signal (15) and a current amplitude signal (13). A summing device (20) determines a phase angle signal (21) of a vector from sum of the phase difference signal and a current angle signal (14). A space vector modulator-device (22) determines a signal for controlling control circuit points (8) from a voltage amplitude signal (17) and the current amplitude signal that are defined form the vector. |
