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Fault Detection and Diagnosis for Non-Gaussian Stochastic Distribution Systems With Time Delays via RBF Neural Networks

Abstract: A new fault detection and diagnosis (FDD) problem via the output probability density functions (PDFs) for non-gausian stochastic distribution systems (SDSs) is investigated. The PDFs can be approximated by radial basis functions (RBFs) neural networks. Different from conventional FDD problems, the measured information for FDD is the output stochastic distributions and the stochastic variables […]

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Temperature Communication for Best Accuracy and Reliability, and Least Noise

Communication from the temperature sensor to the control room should be designed to provide the greatest accessibility, flexibility, reliability, and accuracy. What was traditionally thought to be the least expensive solution has severe ramifications and hidden costs. Here we look at how the advent of smart transmitters and wireless communication has opened the door to […]

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The Proper Implementation and Common Mistakes of Sequential Function Charts

In December 1993, the International Electrotechnical Commission (IEC) recognized five standard programming languages that could be used for implementing either process or discrete programmable controllers. The IEC is an organization that prepares and publishes international standards for all electrical, electronic, and related technologies, including controllers. The organization identified five programming languages and their common abbreviations […]

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Experimental Verification of SMC with Moving Switching Lines Applied to Hoisting Crane Vertical Motion Control

Abstract: In this paper we propose sliding mode control strategies for the point-to-point motion control of a hoisting crane. The strategies employ time-varying switching lines (characterized by a constant angle of inclination) which move either with a constant deceleration or a constant velocity to the origin of the error state space. An appropriate design of […]

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Industrial Big Data Analytics: Present and Future

We have come a long way from dumping information into databases never to be seen or heard from again, but we still have a long way to go. Today’s software infrastructures for remote monitoring and diagnostics (RM&D) are moving from analyzing real-time data to mining larger data sets for additional knowledge of equipment. Industrial big […]

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How Leading Companies Use Remote Management Support Strategies

Manufacturing firms have used remote management for automation support tasks for quite a while and for a variety of reasons. But due to recent changes in technology and competitive pressure remote support is now recognized as a best practice to creating strategic advantages by lowering costs and improving efficiency. On the technology front, remote management […]

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FDI Meets Plant’s Device Integration Needs

The future is digital, and digital should be intuitive and easy to use. Some users of 4–20 mA/HART, Foundation Fieldbus, and Profibus devices have to grapple with two sets of files to integrate their devices: electronic device description (EDD) files and device type manager (DTM) software drivers. Field device integration (FDI) is a new device […]

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Fed-Batch Process for Chili

What are the Inherent Differences in the Performance of Pure Batch, Fed-Batch and Continuous Reactors?

In pure batch operations, changes in feed conditions, disturbances, or demand show up as changes in the profile of key process variables. For a bioreactor, variability in the seed culture, indeterminacy of cell response and changes in the demand for air, substrate (e.g. glucose), and reagent cause the variation in the batch profile for dissolved […]

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A Fast Converging Robust Controller Using Adaptive Second Order Sliding Mode

Abstract: This paper proposes an adaptive second order sliding mode (SOSM) controller with a nonlinear sliding surface. The nonlinear sliding surface consists of a gain matrix having a variable damping ratio. Initially the sliding surface uses a low value of damping ratio to get a quick system response. As the closed loop system approaches the desired […]

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