Errors estimation and refining methods for the numerical computation in real-time control systems

Author

Tanasa, Valentin ; Chiriac, Aurica ; Popescu, Dan

Author_Institution

Fac. of Autom. Control & Comput. Sci., Politeh. Univ. of Bucharest, Bucharest, Romania

fYear

2013

fDate

11-13 Oct. 2013

Firstpage

521

Lastpage

526

Abstract

In the field of industrial control, the numerical devices are widely used. There are more issues that can affect the precision of the numerical control and it can induce significant errors in the control structure. These issues, discussed in this article, are: the discretization methods used to elaborate the discrete control algorithms, the value of the sampling rate, the numerical error representation in the computing devices and the quantization error. In this paper we try to make an analysis of these errors and to propose methods that can provide error reduction.

Keywords

digital control; discrete systems; numerical control; real-time systems; digital control; discrete control algorithms; discretization methods; error reduction; errors estimation; industrial control; numerical computation; numerical control; numerical devices; numerical error representation; quantization error; real-time control systems; refining methods; Digital control; Equations; Performance evaluation; Process control; Quantization (signal); Stability analysis; Transfer functions; Digital control; Discretizing methods; Emulated control; PID; Sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

System Theory, Control and Computing (ICSTCC), 2013 17th International Conference

Conference_Location

Sinaia

Print_ISBN

978-1-4799-2227-7

Type

conf

DOI

10.1109/ICSTCC.2013.6689011

Filename

6689011