Title:
PARAMETER ESTIMATING SYSTEM
Document Type and Number:
Japanese Patent JPS58182712
Kind Code:
A
Abstract:
PURPOSE:To improve the estimating accuracy of parameter, by giving a time lag corresponding to a real process to an area wherein a process estimating output is obtained by an estimation of parameter. CONSTITUTION:A parameter estimating device 10 inspects variations of process variables x1 and x2 and receives these variables and an deviation output (e) at that time point from an operator 9 to estimate newly parameters a'1 and a'2. These parameters are fed to parameter estimating circuit 5 and 6 to be altered to new values. The process variables passed through primary delay elements 3 and 4 and multiplied by the revised parameters a'1 and a'2 and then added together by an operator 7 to be delayed by a fixed time with a waste time element 8. This output, i.e. the estimated value y' is compared with the process output Ym of a detection delay 2 at an operator 9. The parameter estimating process is repeated until the deviation (e) is set at 0.
Inventors:
YAMAMOTO SHIGEHIKO
Application Number:
JP6561682A
Publication Date:
October 25, 1983
Filing Date:
April 20, 1982
Export Citation:
Assignee:
YOKOGAWA ELECTRIC WORKS LTD
International Classes:
G05B23/02; (IPC1-7): G05B23/02
Domestic Patent References:
| JPS5660914A | 1981-05-26 |
Attorney, Agent or Firm:
Shinsuke Ozawa