Multivariable robust controller design for a boiler system
Tóm tắt
In an industrial boiler system, multiloop (decentralized) proportional-integral (PI) control is used because of its implementational advantages. We show that such control schemes sacrifice robustness and performance of the overall system. In particular, under normal boiler operating conditions, we design a robust multivariable controller using H/sub /spl infin// loop-shaping techniques; for consideration in implementation, we then reduce this controller to a multivariable PI controller. Both the H/sub /spl infin// controller and its PI approximation are tested extensively in letdown the frequency domain as well as in the time domain, using a valve complex nonlinear simulation software; the results show that the designed controllers are superior in robustness and performance to the existing multiloop controller.
Từ khóa
#Robust control #Control systems #Boilers #Electrical equipment industry #Industrial control #Pi control #Proportional control #Software testing #Frequency domain analysis #ValvesTài liệu tham khảo
petrovix, 2000, robust imc controllers for a solid-fuel boiler, Eng Simulation, 17, 211
10.1109/60.79634
mcfarlane, 1990, Robust Controller Design Using Normalized Coprime Factorization Description, 10.1007/BFb0043199
skogestad, 1996, Multivariable Feedback Control Analysis and Design
morari, 1989, Robust Process Control
10.1007/BFb0043756
mcavoy, 1984, Interaction Analysis
serman, 1990, flexible program package for simulation of once-through boiler steady states and dynamics, Proc 1st Int Forum Math Modeling Comput Simulation Processes Energy Syst, 573
10.1016/S0196-8904(98)00021-1
johanssson, 1984, inverse nyquist array technique in the design of a multivariable controller for a solid-fuel boiler, Int J Contr, 40, 1077, 10.1080/00207178408933333
rink, 1996, SYNSIM A Computer Simulation Model for the Mildred Lake Steam/Electrical System of Syncrude Canada Ltd
kwon, 1989, on the multivariable robust control of a boiler-turbine system, Proc IFAC Symp Power Syst Power Plant Contr, 219
10.1016/0005-1098(84)90022-0
10.1109/59.744528
10.1002/rnc.4590040503
rhine, 1991, Modeling of Gas-Fired Furnaces and Boilers