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LQG/LTR control system design for a low-pressure feedwater heater train with time delay

Conference ·
OSTI ID:6622646
;  [1]
  1. Tennessee Univ., Knoxville, TN (USA). Dept. of Electrical Engineering
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An LQG/LTR control system design is formulated for a feedwater heater train with output time delay. This approach involves factoring the feedwater heater train plant into nonminimum and minimum phase components to allow the design of a robust controller for the minimum phase component of the plant using the LQG/LTR technique (minimum phase method). The nonminimum phase component takes the form of an all-pass filter containing the rhp zeroes of the first-order approximation of the time delay component. Using this nonminimum phase all-pass filter, certain singular-value multiplicative error bounds can be established to obtain a stable control system when using the LQG/LTR design technique on the minimum phase component of the plant. New analysis methods using singular values are integrated into the conventional singular-value performance and stability robustness analysis procedure. These new analysis methods allow computation of the maximum allowable time delay before instability occurs for both SISO and MIMO control systems. 7 refs., 10 figs., 1 tab.
Research Organization:
Oak Ridge National Lab., TN (USA)
Sponsoring Organization:
DOE/NE
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6622646
Report Number(s):
CONF-901199-10; ON: DE90017333
Country of Publication:
United States
Language:
English

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Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
220400* -- Nuclear Reactor Technology-- Control Systems
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CONTROL SYSTEMS
DESIGN
FEEDWATER
FEEDWATER HEATERS
FUNCTIONS
HEATERS
HYDROGEN COMPOUNDS
MATHEMATICAL MODELS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
OXYGEN COMPOUNDS
POWER PLANTS
RESPONSE FUNCTIONS
THERMAL POWER PLANTS
TIME DELAY
WATER