Abstract
This paper concerns with the typical problem of disturbance rejection in process control in the presence of time-delays and, possibly, the integrating or unstable dynamics. It is shown how unknown disturbance can be rejected actively in the absence of detailed mathematical model of the process. Disturbance rejection ability and stability are analyzed using the language of frequency response engineers are familiar with and, for the sake of simplicity, the discussion is limited to the first-order plus time delay (FOPTD) systems. The concept of delay margin is proposed to facilitate engineering design. A chemical reactor concentration control problem is used to provide the insight of this particular disturbance rejection strategy. Comparative simulation study shows a substantial improvement in the performance over a couple of existing methods seen recently in the literature.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.