Title:
【発明の名称】モータ制御方法
Document Type and Number:
Japanese Patent JP2731815
Kind Code:
B2
Abstract:
A polyphase induction motor is driven from an inverter having a set of switches activated in prescribed on-off patterns to provide forward and reverse voltage vectors and a zero vector for controllably energizing the motor. Memories are provided on which there are written forward voltage vector data for forwardly energizing the motor, reverse voltage vector data for reversely energizing the motor, and zero vector data for de-energizing the motor. The voltage vector data and zero vector data are selectively read out from the memories in order to cause the inverter to generate in real time the corresponding voltage vectors and zero vectors needed for the motor to be quickly revolved to, and set out of rotation exactly in, a desired angular position. For such optimum motor speed control an ideal control curve is predefined which represents the ideal relationship between the motor speed and the difference between the actual and the desired angular position of the motor. The voltage vector data and zero vector data are read out from the memories so that an actual control curve representative of the actual relationship between the motor speed and the difference between the actual and the desired angular position may approximate the ideal control curve as closely as possible.
Inventors:
TAKAHASHI ISAO
IWATA MAKOTO
IWATA MAKOTO
Application Number:
JP5849389A
Publication Date:
March 25, 1998
Filing Date:
March 11, 1989
Export Citation:
Assignee:
SANKEN DENKI KK
TAKAHASHI ISAO
TAKAHASHI ISAO
International Classes:
G05D3/12; G05B19/23; H02P3/06; H02P27/06; (IPC1-7): G05D3/12; H02P3/06; H02P5/41
Domestic Patent References:
| JP63301302A | ||||
| JP63301303A | ||||
| JP5049614A | ||||
| JP58151885A | ||||
| JP1100611A |
Attorney, Agent or Firm:
Takano Noritsuji