textile factory quality controller

Robust Fault Detection for Switched Positive Linear Systems with Time-Varying Delays

Abstract: This paper investigates the problem of robust fault detection for a class of switched positive linear systems with time-varying delays. The fault detection filter is used as the residual generator, in which the filter parameters are dependent on the system mode. Attention is focused on designing the positive filter such that, for model uncertainties, […]

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spot welding

Developing a Career Pathway for a Mission-Critical Workforce

Technology advances have allowed us to expand our horizons and create complex systems to automate the supporting fabric and functions of our daily lives. These are systems that we have come to depend on and, in some cases, take for granted. We reach for the light switch without thinking that the light might not come […]

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Industrial control panel

Recurrent Fuzzy Neural Network Backstepping Control for the Prescribed Output Tracking Performance of Nonlinear Dynamic Systems

Abstract: This paper proposes a backstepping control system that uses a tracking error constraint and recurrent fuzzy neural networks (RFNNs) to achieve a prescribed tracking performance for a strict-feedback nonlinear dynamic system. A new constraint variable was defined to generate the virtual control that forces the tracking error to fall within prescribed boundaries. An adaptive RFNN […]

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Value Price

How Do You Make an Automation Buying Decision?

For many people in the controls systems industry the word that seems to get thrown around a lot is value. What is value? It is defined differently to the various stakeholders in any project (engineering, maintenance, project manager, management, purchasing, EH&S and the vendor), which often leads to misalignment of the desired outcome vs. actual […]

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medical factory and production indoor

A Closer Look at Process Instrument Commissioning

Process instrument commissioning is an essential part of an overall plant’s commissioning program and is necessary for ideal plant performance. It requires an allocated budget, time, and trained personnel, and must be considered within the scope of the overall program. Typically the most common activities that affect time and cost in a conventional process instrument […]

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Pharmaceutical Industry

The Key to Asset Management is Management

    Assets come in many forms including physical assets, people assets, legal assets, knowledge assets, property assets and others. Wikipedia defines asset as an economic resource – anything tangible or intangible that is capable of being owned or controlled to produce value. Simply stated, assets represent value of ownership that can be converted into […]

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Chemical plant scientist

What are the Top 10 Mistakes Made Every Day in pH System Design?

Since we learn by example, here is a neutralizer tank that has the major mistakes I have seen in waste treatment system pH design and installation. Each mistake is the result of a fundamental lack of understanding of the heightened sensitivity of pH control systems to dead time, process and measurement noise, insufficient process attenuation […]

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Female hands hold a tablet with system smart house on the backgr

Influence of Time and Length Size Feature Selections for Human Activity Sequences Recognition

Abstract: In this paper, Viterbi algorithm based on a hidden Markov model is applied to recognize activity sequences from observed sensors events. Alternative features selections of time feature values of sensors events and activity length size feature values are tested, respectively, and then the results of activity sequences recognition performances of Viterbi algorithm are evaluated. The […]

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Robotic arm holding light bulb

What is Automation?

In my last post, I shared details about ISA’s Summer Leaders Meeting (SLM), including our first Automation Advisory Council meeting and the strategic visioning and planning sessions that were held and next steps. In that meeting we discussed how ISA’s use of the words “automation” and “automation professional” might make some members of ISA (and […]

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Engineers using tablet on wind turbine site

September Educational Opportunities from ISA

For four consecutive weeks this fall, ISA industrial automation experts will be in Houston, Tex. to lead the world-class technician skills, automation engineering and safety courses. ISA Technical Training Camp is your opportunity to take multiple ISA training courses at one location, and at a discounted rate. The program, which includes pre-arranged local plant tours […]

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