Compound Control Strategy for MDF Continuous Hot Pressing Electrohydraulic Servo System with Uncertainties and Input Saturation
Joint Authors
Zhu, Liangkuan
Zi-bo, Wang
Ya-qiu, Liu
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-12-08
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
A compound control strategy is investigated for Medium Density Fiberboard (MDF) continuous hot pressing electrohydraulic servo system (EHSS) with uncertainties and input saturation.
Firstly, a hyperbolic tangent function is applied to approximate saturation nonlinearity in the system.
And thus the mathematical model is continuous and differentiable.
Subsequently, the slab thickness tracking controller is constructed by using a dynamic surface control (DSC) method, which introduces first-order low-pass filters to calculate derivatives of virtual control input in each step.
Compared with the conventional backstepping controller, complexity of the design procedure is alleviated obviously.
Moreover, a composite disturbance of uncertainties and input saturation is estimated by a nonlinear disturbance observer for compensation of the control law.
Finally, an appropriate Lyapunov function is chosen to prove that all signals of the closed-loop system are semiglobally uniformly ultimately bounded and the tracking error converges to zero asymptotically.
Numerical simulation results are also exhibited to authenticate and validate the benefits of the proposed control scheme.
American Psychological Association (APA)
Zhu, Liangkuan& Zi-bo, Wang& Ya-qiu, Liu. 2016. Compound Control Strategy for MDF Continuous Hot Pressing Electrohydraulic Servo System with Uncertainties and Input Saturation. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-12.
https://search.emarefa.net/detail/BIM-1112117
Modern Language Association (MLA)
Zhu, Liangkuan…[et al.]. Compound Control Strategy for MDF Continuous Hot Pressing Electrohydraulic Servo System with Uncertainties and Input Saturation. Mathematical Problems in Engineering No. 2016 (2016), pp.1-12.
https://search.emarefa.net/detail/BIM-1112117
American Medical Association (AMA)
Zhu, Liangkuan& Zi-bo, Wang& Ya-qiu, Liu. Compound Control Strategy for MDF Continuous Hot Pressing Electrohydraulic Servo System with Uncertainties and Input Saturation. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-12.
https://search.emarefa.net/detail/BIM-1112117
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1112117