Sökning: "PID-control"

Visar resultat 6 - 10 av 24 avhandlingar innehållade ordet PID-control.

  1. 6. An optimization approach to the design of robust controllers : applied to a tokamak control problem

    Författare :Carl-Magnus Fransson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SQP; PID control; mu-analysis; robustness; tokamak; QFT; onconvex global optimization; plasma; H infin-control; performance;

    Sammanfattning : .... LÄS MER

  3. 7. Optimization Methods for Robust Control with Application to Resistive Wall Modes in Tokamaks

    Författare :Carl-Magnus Fransson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H?; fusion; QFT; performance; tokamak; optimization; robustness; structured singular value; control; plasma; resistive wall modes; LMI; PID control;

    Sammanfattning : In many research areas physical systems are described by mathematical models. We focus here on systems that are regulated by a controller, typically realized by software, whose design involves certain parameters. LÄS MER

  4. 8. Analysis and Design of Software-Based Optimal PID Controllers

    Författare :Olof Garpinger; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process industry; PID control; software; optimization; load disturbance attenuation; robustness; noise sensitivity; trade-off plots; modeling; friction stir welding;

    Sammanfattning : A large process industry can have somewhere between five hundred and five thousand control loops, and PID controllers are used in 90–97% of the cases. It is well-known that only 20–30% of the controllers in the process industry are tuned satisfactorily, but with the methods available today it is considered too time-consuming to optimize each single controller. LÄS MER

  5. 9. Design of Robust PID Controllers with Constrained Control Signal Activity

    Författare :Olof Garpinger; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; measurement noise; constrained control signal activity; linear systems; disturbance rejection; PID control; process control; Youla parameterized controllers; algorithms and software;

    Sammanfattning : This thesis presents a new method for design of PI and PID controllers with the level of control signal activity taken into consideration. The main reason why the D-part is often disabled in industrial control loops is because it leads to control signal sensitivity of measurement noise. LÄS MER

  7. 10. Evaluation and tuning of PID controllers

    Författare :Birgitta Kristiansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cinstrained optimization; auto-tuning; robustness; PI control; PID control; Smith predictor; PIPD control; performance; rolloff; evaluation;

    Sammanfattning : .... LÄS MER