Archive | Chemical & Petroleum

ISA Chemical & Petroleum Division

Fig. 1. Estimation of the effects of unmeasured disturbance.

A simplified predictive control algorithm for disturbance rejection

Abstract: Model predictive control (MPC) offers several advantages for control of chemical processes. However, the standard MPC may do a poor job in suppressing the effects of certain disturbances. This shortcoming is mainly due to the assumption that disturbances remain constant over the prediction horizon. In this paper, a simple disturbance predictor (SDP) is developed […]

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Don Lovell

Tuning Control Loops Course: What is a “Bump Test”?

A customer had a poor performing loop in the brewery. The problem would really become an issue once in awhile depending on the operating conditions in the plant. The problem would be passed from person to person, shift to shift with no real answer. In discussing the problem with a controls engineer, the engineer asked […]

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2012 AIChE Spring Meeting & 8th Global Congress on Process Safety

In case you missed it, the 2012 AIChE Spring Meeting & 8th Global Congress on Process Safety is being held this coming week (April 1-4, 2012) in Houston, TX.  There is some great content being presented: Event Keynote: MICHAEL J. DOLAN Senior Vice President, ExxonMobil Corporation “Process Safety and Corporate Responsibility” Other Process Safety Content: Look […]

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