Design of combination hybrid adaptive controller for the burning system of drum boiler

As the burning system of drum boiler is a nonlinear big-lagged system, it is very difficult to achieve better tracking control performances and robustness by traditional PID and classical control theories. Based on the dynamic peculiarity analysis of the burning system, a combination hybrid adaptive control scheme was designed. It included a few hybrid adaptive controllers, these controllers merged to work, the control signal was obtained by weighting the output signals of the few controllers. Theoretical analysis and test results show that the scheme is effective to solve the nonlinear big-lagged peculiarity, has quick adaptability and strong robustness. The results show that efficiency prospects for its further applications on power systems.