A discretization method for nonlinear delayed non-affine systems

Authors:
Yuan-Liang Zhang
Affiliations:
School of Mechanical Engineering, Huaihai Institute of Technology, Lianyungang, PRC 222005
Venue:
International Journal of Automation and Computing
Year:
2012

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Abstract

The input time delay is always existent in the practical systems. Analysis of the delay phenomenon in a continuous-time domain is sophisticated. It is appropriate to obtain its corresponding discrete-time model for implementation via digital computer. This paper proposes a new discretization method for calculating a sampled-data representation of nonlinear time-delayed non-affine systems. The proposed scheme provides a finite-dimensional representation for nonlinear systems with non-affine time-delayed input enabling existing nonlinear controller design techniques to be applied to them. The performance of the proposed discretization procedure is evaluated by using a nonlinear system with non-affine time-delayed input. For this nonlinear system, various time delay values are considered.