Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR IDENTIFYING HYDRAULIC PRESSURE SYSTEM PARAMETER
Document Type and Number:
Japanese Patent JP2001117627
Kind Code:
A
Abstract:

To easily and accurately measure and identify static characteristics or a system parameter by using various hydraulic pressure equipment elements as targets.

An arithmetic operation along a block diagrams constituted on a BDSP 4 and a control rule (PID control or the like) is operated by an inside CPU for controlling a hydraulic pressure system, and a control input based on that is converted into a current signal i, so that a hydraulic pressure servo value 1 can be driven, and then the piston of a hydraulic pressure cylinder 2 can be moved. In this case, the moving amount y of the piston are detected by a sensor 5 such as a laser displacement gauge, and feedbacked to the CPU of the BDSP 4. Also, spool displacement x can be measured by a gap sensor or the like. Thus, the viscosity attenuation rate and dead time of a valve spool and the fraction characteristics of the gain of the hydraulic pressure cylinder or the servo value can be identified.


Inventors:
Yamada, Hironao
Muto, Takayoshi
Application Number:
JP1999000301011
Publication Date:
April 27, 2001
Filing Date:
October 22, 1999
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JAPAN SCIENCE & TECHNOLOGY CORP
International Classes:
F15B9/09; F15B11/00; F15B21/02; G05B13/02; G05B23/02; (IPC1-7): G05B23/02; F15B9/09; F15B11/00; F15B21/02
Attorney, Agent or Firm:
橋爪 健