Abstract
In this paper, the control problem for flexible mechanical systems with input dead-zone nonlinearity is investigated. We employ the boundary control technique aiming at regulating the deformation of flexible mechanical systems (including both the string and the Euler–Bernoulli beam) in the presence of various external disturbances. With the proposed control method, we prove that all the states of the closed-loop flexible mechanical systems are uniformly ultimately bounded, and the input dead-zone nonlinearity and boundary external disturbance are handled. Numerical simulation studies are carried out to verify the effectiveness of the developed boundary control.
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Abbreviations
- L :
-
Length of the flexible mechanical systems
- \(M_{s}\) :
-
Mass of the tip payload
- \(\rho \) :
-
Uniform mass per unit length of the flexible mechanical systems
- EI :
-
Bending stiffness of the flexible beam system
- T :
-
Tension of the flexible mechanical systems
- w(x, t):
-
Elastic deflection at position x for time t
- D(v):
-
Control input dead-zone nonlinearity
- v(t):
-
Desired control input
- \({\bar{d}}(t)\) :
-
Unknown time-varying boundary disturbance on the tip payload
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Acknowledgments
This work was supported by the National Natural Science Foundation of China under Grant 61403063 and 61203057, and the National Basic Research Program of China (973 Program) under Grant 2014CB744206.
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Zhang, S., He, W., Nie, S. et al. Boundary control for flexible mechanical systems with input dead-zone. Nonlinear Dyn 82, 1763–1774 (2015). https://doi.org/10.1007/s11071-015-2275-y
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DOI: https://doi.org/10.1007/s11071-015-2275-y