@Article{cmes.2020.09328,
AUTHOR = {Ji Liang, Zhihuan Chen, Xiaohui Yuan, Binqiao Zhang, Yanbin Yuan},
TITLE = {Terminal Sliding Mode Controllers for Hydraulic Turbine Governing System with Bifurcated Penstocks under Input Saturation},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {123},
YEAR = {2020},
NUMBER = {2},
PAGES = {603--629},
URL = {http://www.techscience.com/CMES/v123n2/38692},
ISSN = {1526-1506},
ABSTRACT = {Terminal sliding mode controller method is introduced to enhance the
regulation performance of the hydraulic turbine governing system (HTGS). For
the purpose of describing the characteristics of controlled system and deducing
the control rule, a nonlinear mathematic model of hydraulic turbine governing
system with bifurcated penstocks (HTGSBF) under control input saturation is
established, and the input/output state linearization feedback approach is used
to obtain the relationship between turbine speed and controller output. To address
the control input saturation problem, an adaptive assistant system is designed to
compensate for controller truncation. Numerical simulations have been conducted
under fixed point stabilization and periodic orbit tracking conditions to compare
the dynamic performances of proposed terminal sliding mode controllers and conventional sliding mode controller. The results indicate that the proposed terminal
sliding mode controllers not only have a faster response and accurate tracking
results, but also own a stronger robustness to the system parameter variations.
Moreover, the comparisons between the proposed terminal sliding mode controllers and current most often used proportional-integral-differential (PID) controller,
as well its variant NPID controller, are discussed at the end of this paper, where
the superiority of the terminal sliding mode controllers also have been verified.},
DOI = {10.32604/cmes.2020.09328}
}