Title:
METHOD OF MOTOR DRIVING CONTROL
Document Type and Number:
WIPO Patent Application WO/1994/008392
Kind Code:
A1
Abstract:
A motor driving control method for eliminating influences of fluctuation of a main voltage in current control of PWN control. A main voltage Vlink is detected by a main voltage detection circuit (S2) and a value Vlink1 corresponding to the main voltage is used as this detection main voltage Vlink (S4). Each of the differences between corresponding current instructions Icu, Icv, Icw and detection phase currents iu, iv, iw is multiplied by a proportional gain K. Further, it is divided by the main voltage corresponding value Vlink1 to obtain a duty ratio etan, etav, etaw of the PWN signal of each phase (S5). The PWN signal having this duty ratio is outputted to a power convertor (S6), and a motor is driven and controlled by turning ON/OFF each switching device. The main voltage corresponding value Vlink1 is set to the detection main voltage Vlink and becomes equal to the practial main voltage. Therefore, the duty ratio of the PWN signal corresponding to the actual main voltage is calculated. Accordingly, the current is controlled with current response characteristics that are set in advance. In this way, high response can be obtained and motor control can be made stably.
Inventors:
SAKANO TETSURO (JP)
ARIMOTO KOHEI (JP)
ARIMOTO KOHEI (JP)
Application Number:
PCT/JP1993/001439
Publication Date:
April 14, 1994
Filing Date:
October 06, 1993
Export Citation:
Assignee:
FANUC LTD (JP)
SAKANO TETSURO (JP)
ARIMOTO KOHEI (JP)
SAKANO TETSURO (JP)
ARIMOTO KOHEI (JP)
International Classes:
H02M5/458; H02M7/48; H02M7/5395; (IPC1-7): H02P7/63; H02M7/48
Foreign References:
| JPH01190291A | 1989-07-31 | |||
| JPS60234466A | 1985-11-21 | |||
| JPS62181676A | 1987-08-10 |
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