Sökning: "PID control"

Visar resultat 16 - 20 av 70 avhandlingar innehållade orden PID control.

1. 16. 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. 17. PID Controller Design

   Författare :Helene Panagopoulos; Institutionen för reglerteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : [abstract missing].... LÄS MER

4. 18. 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

5. 19. 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

7. 20. Optimization of Low-Level Controllers and High-Level Polymer Grade Changes

   Författare :Per-Ola Larsson; Institutionen för reglerteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process control; PID control; robustness; noise sensitivity; dynamic optimization; polymerization; Modelica;

   Sammanfattning : Two design problems at different levels in the control hierarchy are considered; optimization of robust low-level controllers with constrained control signal activity and optimization of economical high-level polyethylene grade changes. As for the first design problem, a constraint on control signal activity due to measurement noise is presented and used when optimizing and comparing PI/PID controllers with measurement filters of different orders. LÄS MER