Compensating for computational delay in digital equivalent of continuous control systems

Author

Rattan, Kuldip S.

Author_Institution

Dept. of Electr. Syst. Eng., Wright State Univ., Dayton, OH, USA

Volume

34

Issue

8

fYear

1989

fDate

8/1/1989 12:00:00 AM

Firstpage

895

Lastpage

899

Abstract

A computer-aided method to compensate for the computational delay in the digital equivalent of continuous control systems is presented. The objective is to obtain the transfer function of the digital controller so that the performance of the equivalent digital control system is as close to that of the existing continuous system as possible. This is done by matching the frequency response of the digital control system to that of the existing system with a minimum weighted mean-square error. A formula for computing the parameters of the digital controller is obtained as a result. The design method is illustrated with an example

Keywords

compensation; digital control; frequency response; transfer functions; compensation; computational delay; continuous control systems; digital control; frequency response; minimum weighted mean-square error; transfer function; Control systems; Delay estimation; Equations; Marine vehicles; Matrix decomposition; Observability; Polynomials; State estimation; State-space methods; Transfer functions;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/9.29438

Filename

29438