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Showing 1 to 6 of 6 for “"relay feedback"”.

  1. Relay Feedback and Multivariable Control

    Johansson, Karl HenrikDepartment of Automatic Control, Lund Institute of Technology (LTH)1997

    … three issues in control engineering related to relay feedback and multivariable control systems. Linear systems with relay feedback is the first topic. Such systems are shown to exhibit several interesting behaviors. It is proved that there exist multiple fast relay switches if and only if the …

    lund Repository record

  2. TOWARDS RELAY FEEDBACK AUTO-TUNING OF MULTI-LOOP SYSTEMS

    VINOD U. VASNANI1995

    … the autotuning of these controllers using the relay feedback technique. The thesis discusses the following; the effect of placing cascade and m x m multivariable plants under relay feedback, the information that can be derived from the oscillations that occur and how they can be used in the …

    nus Repository record

  3. Automatic Tuning of PID Controllers Based on Asymmetric Relay Feedback

    Berner, JosefinDepartment of Automatic Control, Lund Institute of Technology, Lund University2015

    … presents an improved version of the classic relay autotuner. The proposed autotuner uses an asymmetric relay function to better excite the process in the experiment phase. The improved excitation provides the possibility to obtain better models and hence better tuning, without making the …

    lund Repository record

  4. TUNING 2-BY-2 MULTI-LOOP PI CONTROLLERS USING RELAY FEEDBACK

    TAN WOEI WAN1994

    … two-output plant can be tuned by using the relay feedback technique. Specifically, the behaviour of a multivariable plant under closed-loop relay feedback control and how multi-loop PI controllers can be tuned from the oscillations in such a system will be discussed. A multivariable system …

    nus Repository record

  5. Self-Oscillations in a Relay Feedback Control System Containing Transportation Delay

    Rao, Sunkara NageswaraUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-04T21:03:27Z (GMT). No. of bitstreams: 1 6202952.pdf: 2235922 bytes, checksum: 45137b77f0e9fd265c58c8ea227529f8 (MD5) Previous issue date: 1962

    uiuc Repository record

  6. Tools for Autonomous Process Control

    Wallén, AndersDepartment of Automatic Control, Lund Institute of Technology (LTH)2000

    … A new method for automatic tuning based on relay feedback is developed. A relay with time-varying hysteresis is used in order to achieve excitation over a large frequency interval. An estimation of the frequency response of the process is obtained by frequency domain identification. This …

    lund Repository record