tailieunhanh - Advanced Model Predictive Control Part 12

Tham khảo tài liệu 'advanced model predictive control part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Model Predictive Control and Optimization for Papermaking Processes 319 that the highest costing MV s are driven to their minimum operating points and the lowest costing MV s are driven to their maximum operating points. The TAD1 dry end differential pressure is left as the MV that is within limits and actively controlling the paper moistures. Figure 10 shows that throughout this trial the MV s are optimized without causing any disturbance to the CV s. Stock Flow TAD1 Supply Temp TAD1 DE DP TAD1 Gap Pres TAD2 Exh Temp TAD2 DE DP TAD2 Gap Pres Yankee Hood Temp Yankee Supply Fan Speed Machine Speed Stock Flow TAD1 Gap Pressure Tickler Refiner Dry Weight Reel Moisture TAD Moisture TAD1 Exhaust Pressure Fig. 5. The MPC model matrix for the tissue machine control and optimization example Fig. 6. Natural gas costs and electricity costs during the trial 320 Advanced Model Predictive Control Fig. 7. Total costs during the trial MV eng unit Low Limit High Limit Linear Obj Coef Cost eng unit Process Gain Moi eng unit Cost Cost Moi Rank Optimization Behavior TAD1 Supply Temp deg F 4 450 max TAD1 DE DP inch H2O 3 controlling Moi TAD1 Gap Prs inch H2O 6 max TAD2 Exh Temp deg F 1 175 min TAD2 DE DP inch H2O 2 1 min TAD2 Gap Prs inch H2O 5 maX Table 2. The MV cost rankings. Model Predictive Control and Optimization for Papermaking Processes 321 TAD1 Manipulated Variables Fig. 8. Manipulated variables during the trial Fig. 9. Manipulated variables during the .

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