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Patent Searching and Data


Title:
CONTROL DEVICE FOR HYDRAULIC VIBRATION EXCITER
Document Type and Number:
Japanese Patent JPH10131903
Kind Code:
A
Abstract:

To avoid worsening of control stability, disturbance restrainability, and the like by composing a transfer function of one path in a control system of an approximate model lowered in dimension and coinciding with a transfer function of the same path in a frequency range where target value follow-up performance is demanded.

A control frequency range where target value follow-up performance is demanded in a general servo system is determined of itself, and there is no problem from the viewpoint of control as long as a transfer function Gs' of an approximate model coincides with a transfer function Gs originally used in this frequency band. It is therefore so determined that the target value follow-up performance is flat in OdB. The approximate model of a transfer function, a control object, is composed of a part P surrounded by a dashed line, and the transfer function Gs' of a model lowered in dimension compared to the transfer function Gs of a part surrounded by a conventional dotted line is used. In association with this, a normative model Gm' of target value follow-up performance can be reduced in order compared to conventional Gm in a range of ensuring properness of a feedforward compensator Gm'/Gs'. Target value follow-up performacne can therefore be maintained satisfactorily.


Inventors:
Kubota, Tomoo
Kamitsuma, Fumihide
Kubokawa, Noritada
Sugimoto, Bunichi
Application Number:
JP1996000290284
Publication Date:
May 22, 1998
Filing Date:
October 31, 1996
Export Citation:
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Assignee:
KAYABA IND CO LTD
International Classes:
F15B9/09; G05B11/32; G05B13/02; (IPC1-7): F15B9/09; G05B11/32; G05B13/02
Attorney, Agent or Firm:
後藤 政喜 (外1名)