Title:
PLANT CONTROLLING SYSTEM
Document Type and Number:
Japanese Patent JPS58139206
Kind Code:
A
Abstract:
PURPOSE:To suppress interference between control variables and to limit the fluctuation of the control values due to external disturbance, by changing the control mode of a proportional integral control system depending on the normality or abnormity of an optimum control system incorpolated in a model, and controlling the plant. CONSTITUTION:The proportional and integral control system 200 determines each flow demand such as turbine steam, water supply, fuel, air, spray, and recycle gas predicatively based on the static characteristics of a load demand and each manipulated value, and when the optimum control system 100 having a model is normal, the correction demand of each manipulated value is computed with signals processing for integration of deviation between the measured value and the set value of generator output, main vapor pressure, main steam temperature and reheated vapor temperature. When the system 100 is failed, each control value deviation computes the correction demand of each manipulated value with the signals of proportional and integral processing.
Inventors:
NOMURA MASAHIDE
SATOU YOSHIO
SATOU YOSHIO
Application Number:
JP1962582A
Publication Date:
August 18, 1983
Filing Date:
February 12, 1982
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G05B13/00; G05B13/04; (IPC1-7): G05B13/04
Attorney, Agent or Firm:
Akio Takahashi
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