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Automation industry articles from ISA

Design-Principles-for-Complex-Process-Contro

Design Principles for Complex Process Control

  I recently surveyed the on-site development of the control system for a large concentrated solar power station. This “first of a kind” facility offered many control challenges, such as balancing heat in 600-meter-long vaporizers, setting the dry-out point, and adjusting the mirrors’ position at centimeter precision on a 50-meter distant target. In this “research-oriented” […]

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DCS-Upgrade-How-to-Reduce-Stress-During-Execution

DCS Upgrade: How to Reduce Stress During Execution

  The Reliance Industries Hazira complex, which manufactures a wide range of polymers, polyesters, fiber intermediates, and petrochemicals, needed to determine the best way to update the industrial automation system. The complex commissioned a naphtha cracker plant in March 1997 using then state-of-the-art technology, including a UNIX-based control system. Over the years, there had been […]

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Plant-Wide-Control-Design-Based-on-Steady-State-Combined-Indexes

Plant-Wide Control Design Based on Steady-State Combined Indexes

  Abstract: This work proposes an alternative methodology for designing multi-loop control structures based on steady-state indexes and multi-objective combinatorial optimization problems. Indeed, the simultaneous selection of the controlled variables, manipulated variables, input-output pairing, and controller size and interaction degree is performed by using a combined index which relies on the sum of square deviations and […]

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Connectivity,-Productivity-and-Efficiency-Benefits-of-IIoT-Depend-on-Integrated-Cybersecurity

Connectivity, Productivity and Efficiency Benefits of IIoT Depend on Integrated Cybersecurity

  I had a discussion with Gary Freburger, president of Schneider Electric’s process automation business, about the Industrial Internet of Things (IIoT). He framed the discussion by introducing a new concept, “intelligize.” Simply put, intelligize means establishing a method to sort, prioritize, and refine your data, to connect bits of data so they become meaningful […]

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Cybersecurity-Threat-to-Hazardous-Process-Plants

Managing the Cybersecurity Threat to Hazardous Process Plants

  Managing the risk of hazardous process plants is a difficult and resource-intensive activity. In order to reduce costs and improve productivity as technology evolves, process plants employ new equipment and techniques that introduce new hazards. Over the past few decades, the process industries have almost entirely shifted from control systems that were either analog […]

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Measuring-Fuel-Oil-Viscosity-in-a-Power-Plant

Measuring Fuel Oil Viscosity in a Power Plant

  Abstract: The viscosity measurement and control of fuel oil in power plants is very important for a proper combustion. However, the conventional viscometers are only reliable for a short period of time. This paper proposes an on-line analytic viscosity evaluation based on energy balance applied to a piece of tube entering the fuel oil main […]

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Novel-Auto-Tuning-Method-for-Fractional-Order-PID-Controllers

Auto-Tuning Method for Fractional Order PID Controllers

  Abstract: Fractional order PID controllers benefit from an increasing amount of interest from the research community due to their proven advantages. The classical tuning approach for these controllers is based on specifying a certain gain crossover frequency, a phase margin and a robustness to gain variations. To tune the fractional order controllers, the modulus, phase […]

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