TY - JOUR
T1 - Design and stability discussion of an hybrid intelligent controller for an unordinary system
AU - Mohammadzaheri, Morteza
AU - Chen, Lei
PY - 2009/9
Y1 - 2009/9
N2 - In this paper, the pitch angle control of a lab model helicopter is discussed. This problem has some specific features. As a major unusual feature, it is observed that the steady state control command is completely dependent on the setpoint, and for different setpoints, different steady state control commands are needed to keep the error around zero. Moreover, the system is one with highly oscillating dynamics. In order to solve this control problem, two controllers are designed: an artificial neural network (ANN), whose input is the setpoint, is used to provide steady state control command, and a fuzzy inference system (FIS), whose input is error, is used to provide transient control command. The total control command is (he sum of the two aforementioned control commands. It is proven that both ANN and FIS are boundary-input boundary-output (BIBO) systems. Using this fact and considering two experimental assumptions, the closed-loop stability is also proven.
AB - In this paper, the pitch angle control of a lab model helicopter is discussed. This problem has some specific features. As a major unusual feature, it is observed that the steady state control command is completely dependent on the setpoint, and for different setpoints, different steady state control commands are needed to keep the error around zero. Moreover, the system is one with highly oscillating dynamics. In order to solve this control problem, two controllers are designed: an artificial neural network (ANN), whose input is the setpoint, is used to provide steady state control command, and a fuzzy inference system (FIS), whose input is error, is used to provide transient control command. The total control command is (he sum of the two aforementioned control commands. It is proven that both ANN and FIS are boundary-input boundary-output (BIBO) systems. Using this fact and considering two experimental assumptions, the closed-loop stability is also proven.
KW - Control
KW - Fuzzy
KW - Model helicopter
KW - Neural networks
KW - Pitch angle
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U2 - 10.1002/asjc.129
DO - 10.1002/asjc.129
M3 - Article
AN - SCOPUS:72449168798
SN - 1561-8625
VL - 11
SP - 476
EP - 488
JO - Asian Journal of Control
JF - Asian Journal of Control
IS - 5
ER -