Dissertation > Excellent graduate degree dissertation topics show

Strip Cooling Control and Parameter Optimization of Continuous Annealing Furnace

Author: RenLanZhen
Tutor: ZhouZuo
School: Northeastern University
Course: Control Theory and Control Engineering
Keywords: Continuous Annealing Strip Cooling Delay Smith Predictor Fuzzy PID Control BP Neural Network
CLC: TG155.1
Type: Master's thesis
Year: 2008
Downloads: 94
Quote: 0
Read: Download Dissertation

Abstract


Serving as an vital factor of evaluating the quality and flatness of the strip, the outlet strip temperature precision of the rapid cooling section in Continuous Annealing Line(CAL) has direct affluence on strip’s structure and mechanics capability. Therefore, seeking for excellent control method and optimization method of the cooling process has become an important part for the CAL. Among each section of the continuous annealing furnace, rapid cooling section dominates the result of the cooling. Besides, the techniques and control strategy of rapid cooling section are also most complicated. Thus, the paper does much research job on seeking for more accurate ways to increase the precision of the outlet temperature with a focus on control methods and process parameter’s optimization.In this paper, quite a few jobs are done on the process control system of the rapid cooling section, including the mathematical model of the cooling process, the control method of the strip temperature, the preset calculation process,especially the process of presetting water rollers’positions, which is the vital parameter of the cooling process. The shortcomings of the cooling process control are analyzed, and the ways to improve the control system and the cooling process are proposed based upon artificial intelligent methods.A fuzzy-PID control strategy based upon Smith predictor is proposed in this paper to improve the problems brought forward by the delay. And a fuzzy-PID control system based upon Smith predictor is designed and realized in SIMULINK environment, the control result and the anti-disturbing ability of the system is analyzed, besides, the control results are compared between the PID-Smith method and the method designed in this paper regarding the control object parameters’variety. The simulation results show that, the control accuracy of the feedback system is effectively increased.A BP neural network model is established to predict the presetting position of the water cooling rollers as a substitute for the traditional table-investigating method, taking sufficient technique conditions and their varieties into consideration, which has a excellent ability of processing complex non-linear issues.The model is realized in MATLAB environment, which shows a better result than the traditional method.

Related Dissertations

  1. Research on Feature Extraction and Classification of Tongue Shape and Tooth-Marked Tongue in TCM Tongue Diagnosis,TP391.41
  2. Modeling Internet Link Delay Based on Measurement,TP393.4
  3. Research on Visual Servo System of Mechanical ARM,TP242.6
  4. Stability Analysis and Robust Controller Design for Stochastic Time-Delay Systems,TP13
  5. Stability Analysis of Systems with Time Delays,TP13
  6. Municipal tourism land use planning environmental impact assessment,X820.3
  7. Study on Taste Characteristic of Taste Peptide Enzymatic Production from Oyster Base on A Neural Network Method,TS254.4
  8. The Design of a BiCMOS Wide Gain Range Variable Gain Amplifier,TN722
  9. GPS Precise Point Positioning Algorithms and Its Applications,P228.4
  10. Optimization Study on Gating System and Molding Process Parameters of Injection Mold Based on Simulation,TQ320.662
  11. Research of Adaptive Active Noise Control Based on Neural Network,TP183
  12. The Research on Data Fusion Algorithm and Model for Wireless Sensor Networks,TN929.5
  13. Research on Feature Extraction, Selection and Classification Algorithms for Pulmonary CAD,TP391.41
  14. Research on State Diagnosis on Fan Based on Factor Analysis and BP Neural Network,F426.61
  15. Numerical Simulation Research on Optimal Milli-second Delay Time with Many Free Surfaces Hole by Hole Blast,TD235
  16. The Research and Design of Converter Steelmaking Endpoint Guiding System,TF345
  17. Analysis on Water Ecological Carrying Capacity of Jiangxi Province,TV213.4
  18. The Research of Power Network Control Technology in LPG Hybrid Electric Vehicle,U469.72
  19. Research of the Electrode Lifting Hydraulic System of the 60t Electric Arc Furnace,TF748.41
  20. Research on the Quality of Service Technology in IP Network,TN915.09
  21. ESPRIT Parameter Estimation Algorithm in Wideband Channel System,TN925

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Heat treatment > Heat treatment machinery and equipment > Heat treatment furnace
© 2012 www.DissertationTopic.Net  Mobile