title: Output feedback boundary control of an axially moving system with input saturation constraint.
abstract: This paper is concerned with boundary control for an axially moving belt system with high acceleration/deceleration subject to the input saturation constraint. The dynamics of belt system is expressed by a nonhomogeneous hyperbolic partial differential equation coupled with an ordinary differential equation. First, state feedback boundary control is designed for the case that the boundary states of the belt system can be measured. Subsequently, output feedback boundary control is developed when some of the system states can not be accurately obtained. The well-posedness and the uniformly bounded stability of the closed-loop system are achieved through rigorous mathematical analysis. In addition, high-gain observers are utilized to estimate those unmeasurable states, the auxiliary system is introduced to eliminate the constraint effects of the input saturation, and the disturbance observer is adopted to cope with unknown boundary disturbance. Finally, the control performance of the belt system is illustrated by carrying out numerical simulations.
authors.affiliation: School of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address: zhao.zhijia@mail.scut.edu.cn.
authors.forename: Zhijia
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: School of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, China; Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, USA. Electronic address: auylau@scut.edu.cn.
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.affiliation: School of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address: aufeiluo@scut.edu.cn.
authors.forename: Fei
authors.initials: F
authors.lastname: Luo
keywords: Axially moving system; Boundary control; High acceleration/deceleration; Input saturation; Output feedback control