Problem Statement

The current methodology of optimizer tuning faces several challenges:

·         Generally the preferred optimization direction of variables is known. LP tuning is then developed to match these objectives

·         Cost factors are not readily available and therefore are set by trial and error to achieve the desired result

·         Using actual LP costs require accurate models

·         Tuning needs to be revisited when the model is updated or objectives change

Solution

Smart Tune is a new multi-objective, steady-state solver algorithm that sequentially optimizes Manipulated Variables (MVs) based on priorities available in Aspen DMC3 software. Smart Tune allows the user to:

·         Specify controller objectives using priorities instead of LP cost factors

·         Utilize a new workflow wizard that significantly reduces LP tuning complexity

·         Gain greater insight into controller strategy through a new web based operator and engineer screen

Please see the attached pdf document titled "Jump Start Guide: Smart Tune in Aspen DMC3."

This document is a brief tutorial with step by step explanation on how to configure the new Smart Tune Optimization feature in Aspen DMC3 controller using V8.8 Aspen Manufacturing Suite.

Keywords

Smart Tune

DMC3