A Collaborated Multi-controller Strategy by Using L-1 Adaptive Augmentation Control for Power-generation Systems with Uncertainties

作者：Pan, Lei^*; Shen, Jiong; Cao, Chengyu

来源：Information Technology and Control, 2015, 44(3): 302-314.

DOI：10.5755/j01.itc.44.3.8846

• L-1 adaptive controller
• linear controller
• uncertainty
• nonlinearity
• power plants

For dealing with uncertain operation circumstances, a collaborated multi-controller strategy of the cascade architecture with a L-1 adaptive augmentation controller and a conventional baseline controller is introduced to power-generation systems. For its arbitrarily close, fast, and robust tracking performance, the L-1 adaptive output feedback controller is designed as the augmentation controller in the inner-loop to keep the nominal dynamics of the system in the overall operation scope. The robust PID controller and offset-free linear MPC controller are recommended as the available outer-loop baseline controllers to follow control commands. The closed-loop stability of the cascade control system is ensured. The simulation experiments on a benchmark nonlinear boiler-turbine generation model verify the greatly improved adaptation and robustness of the augmentation control system in the presence of unknown uncertainties. Additionally, it is easy to upgrade a conventional control system to this cascade one in practice because the add-in L-1 adaptive augmentation controller influences little on the augmented system setup.

• 出版日期2015
• 单位东南大学