Title:
CONTROL SYSTEM FOR HYDRAULIC ACTUATOR
Document Type and Number:
Japanese Patent JP3675585
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a control system of a hydraulic actuator which is capable of suppressing, e.g. behaviors of the prescribed state variables of the control system such as spool displacement of a servo valve and hydraulic cylinder differential pressure, and contriving the high response of a hydraulic actuator.
SOLUTION: In a control system driving a motor driving circuit 7 and a spool driving motor 8 by a control unit v from a controller 6 in which a cylinder stroke x of a hydraulic cylinder 3 and the desired value r are inputted, displacing a spool 2a of a servo valve 2 controlling hydraulics supplied to the cylinder chambers 31 and 32 of the hydraulic cylinder,3 and performing a feedback control of the cylinder stroke of the hydraulic cylinder 3 based on an optimum control theory, a compensator minimizing a performance function in which arithmetic values of state variables to be suppressed such as arithmetic values of estimated hydraulic cylinder differential pressure calculated by using a controlled system characteristic or estimated servo valve spool displacement, for instance, are fetched is provided.
Inventors:
Kosuke Sato
Takeshi Mikami
Takeshi Mikami
Application Number:
JP24638696A
Publication Date:
July 27, 2005
Filing Date:
September 18, 1996
Export Citation:
Assignee:
Kayaba Industry Co., Ltd.
International Classes:
B64C13/40; F15B9/09; G05B13/02; G05G17/00; (IPC1-7): F15B9/09; B64C13/40; G05B13/02
Domestic Patent References:
| JP8086190A | ||||
| JP6059740A | ||||
| JP8135601A | ||||
| JP61149601A |
Other References:
木村等 / 井上康彦 / 遠藤悦男マウリシオ / Kimura,H.,DDVアクチュエータの動特性シミュレーション ,油圧と空気圧,日本,1996年 7月,27巻4号,pp507-513
Attorney, Agent or Firm:
Masaki Goto
Yoshio Matsuda
Yoshio Matsuda