Title:
SPEED CONTROLLER
Document Type and Number:
Japanese Patent JPS602089
Kind Code:
A
Abstract:
PURPOSE:To reduce the variation in the speed to the abrupt variation in a load by calculating the auxiliary current command value based on the presumed load torque value calculated by a speed signal and a current signal, and adding the auxiliary current command value to the current command value. CONSTITUTION:A speed controller 4 outputs a current command IP in response to the deviation between the speed command VP and the speed signal V. On the other hand, the speed signal V is differentiated by the function of the presumed value Je of the inertial efficiency and the presumed value rhophie of the counterelectromotive force constant, and the load disorder current ID is presumed by the difference between it and the motor current IA. A correction signal IDO is calculated by a factor 10 and a delay factor 12. A current controller 6 controls the anti-parallel 3-phase full wave rectification controller 1 in response to the deviation between the current command IP and the correction value IDO, the current detection value I. In this manner, the variation in the speed can be sufficiently suppressed to the abrupt variation in the load.
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Inventors:
SHIMIZU ITSUO
SAITOU KEIJI
SAITOU KEIJI
Application Number:
JP10795883A
Publication Date:
January 08, 1985
Filing Date:
June 17, 1983
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02P7/292; H02P7/285; H02P29/00; (IPC1-7): H02P5/172
Domestic Patent References:
| JPS54109118A | 1979-08-27 |
Attorney, Agent or Firm:
Masami Akimoto
Next Patent: JPS602090