về MPC
©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 1 MPC for Small Applications Model Predictive Control Model Predictive Control for small applications for small applications ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 2 MPC – Small Applications Advantages of Model Predictive Control Advantages of Model Predictive Control Advantages of Model Predictive Control – Automatically compensate for process interaction, measurable load disturbances and constraints using MPC function block. – Difficult process dynamics may be effectively addressed e.g. deadtime dominant – Allow production to be increased by automatically adjusting throughput to maintain a process at its input operating constraint. ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 3 MPC – Small Applications Multi-variable Control Made Easy Multi Multi - - variable Control Made Easy variable Control Made Easy Example: Control loop with one disturbance and one constraint MPC Traditional Approach ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 4 MPC – Small Applications Saving by Operating Closer to Product Specification or Operating Limit Saving by Operating Closer to Product Saving by Operating Closer to Product Specification or Operating Limit Specification or Operating Limit Before MPC $$ Savings Limit or Spec Target Setpoint ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 5 MPC – Small Applications Throughput May be Operating at Process Input Limit or Operating Constraint Throughput May be Operating at Process Throughput May be Operating at Process Input Limit or Operating Constraint Input Limit or Operating Constraint Time Throughput Production Increase $$ Throughput at limit Operator Setpoint MPC ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 6 MPC – Small Applications MPC Temperature Process (1X1) MPC - Addressing Difficult Dynamics MPC MPC - - Addressing Difficult Dynamics Addressing Difficult Dynamics ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 7 MPC – Small Applications MPC -Addressing Difficult Dynamics MPC MPC - - Addressing Difficult Dynamics Addressing Difficult Dynamics ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 8 MPC – Small Applications MPC -Addressing Difficult Dynamics MPC MPC - - Addressing Difficult Dynamics Addressing Difficult Dynamics ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 9 MPC – Small Applications Automated process testing to identify the process model Automated process testing to identify Automated process testing to identify the process model the process model ©2006 Fisher-Rosemount Systems, Inc. Slide 12 - 10 MPC – Small Applications Step Response Model Step Response Model Step Response Model . Inc. Slide 12 - 1 MPC for Small Applications Model Predictive Control Model Predictive Control for small applications for small applications ©2006 Fisher-Rosemount. 12 - 2 MPC – Small Applications Advantages of Model Predictive Control Advantages of Model Predictive Control Advantages of Model Predictive Control – Automatically