| 摘要 |
PCT No. PCT/JP90/01520 Sec. 371 Date Sep. 11, 1991 Sec. 102(e) Date Sep. 11, 1991 PCT Filed Nov. 21, 1990 PCT Pub. No. WO91/08611 PCT Pub. Date Jun. 13, 1991.A drive control method for a variable reluctance type motor capable of improving the motor efficiency by preventing generation of a disturbance torque. In function generators (8A to 8C) of a controller for embodying the method, the motor rotation direction and the motor driving mode are determined based on the generation order of A- and B-phase feedback pulses from a pulse coder (7) and the sign of a torque command (Tc) from a speed loop compensation circuit (1), and, on the basis of the determination results, either one of four excitation patterns is selected. Function signal values corresponding to actual motor electrical angles ((theta)) are generated from the function generators in accordance with the selected excitation pattern, and excitation of individual phases of the motor (6) is controlled by power amplifiers (4A to 4C) which respond to voltage commands derived based on these function signal values. The excitation interruption timing is so determined as to extinguish a winding current before a disturbance torque is generated by the current which is caused to flow, due to the presence of the inductance of the stator winding, in this winding after the excitation interruption.
|
