Title:
SERVO CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP3490561
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a peak from appearing in a control input at the time of step response and to stabilize control even when the peculiar vibration number of control system is fluctuated by constituting a hydraulic cylinder stroke servo system by making a state feedback into minor loop.
SOLUTION: A state feedback 12 makes a controlled system provided with a servo valve, hydraulic cylinder and steering face into model, and an observer 14 is internally provided with a model expression expressing the dynamic characteristics of entire system of this control system, estimates a state amount (x) of system from a cylinder stroke xp-xc of hydraulic cylinder and servo valve spool displacement (x) and is operated through a controller C1 so as to speedily turn the state amount (x) of system into zero. Besides, a hydraulic cylinder stroke servo system 13 makes the state feedback 12 into minor loop and performs feedback control while using a controller C2 so that the hydraulic cylinder stroke xp-xc can be equal to a target signal (r).
Inventors:
Kousuke Sato
Tsuyoshi Mikami
Tsuyoshi Mikami
Application Number:
JP30773895A
Publication Date:
January 26, 2004
Filing Date:
November 27, 1995
Export Citation:
Assignee:
Kayaba Industry Co., Ltd.
International Classes:
B64C13/40; F15B9/09; G05B13/02; (IPC1-7): G05B13/02; B64C13/40; F15B9/09
Domestic Patent References:
| JP61149601A | ||||
| JP63231001A | ||||
| JP6301948A | ||||
| JP6189961A | ||||
| JP6138906A |
Attorney, Agent or Firm:
Masaki Goto (1 person outside)
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