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Generalized Eigenvalue Minimization for Uncertain First-Order Plus Time-Delay Processes

Abstract: This paper shows how to apply generalized eigenvalue minimization to processes that can be described by a first-order plus time-delay model with uncertain gain, time constant and delay. An algorithm to transform the uncertain first-order plus time delay model into a state-space model with uncertainty polyhedron is firstly described. The accuracy of the transformation is […]

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Aerial View of Business People and Big Data Concepts

Leveraging Big Data in Real Time

Most manufacturing plants hold weekly or monthly production meetings where they review productivity and waste. Obviously, the reports do not let them change what has happened in the past, yet in most cases, they also provide little insight into how to change the future. Many are stuck in a paradigm of “inspect and reject.” This […]

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MA-2014_Spec-Section-interchange_blog

Using Workflow to Achieve Business Integration

There are many issues facing manufacturers today: increasing regulation, a changing workforce, and unprecedented demands for operational performance. As these factors affect a business’s bottom line, individual departments have sought out processes and systems to remove or mitigate the impact of their associated constraints. However, typically these processes or systems only address a particular departmental […]

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MA-2014_Auto-Basics-interchange_blog

How Do You Pick a Flowmeter?

Picking a flowmeter takes both knowledge of the types of meters available and the kind of empirically derived knowledge that comes from experience. If you are like most people, you first think about the types of meters, their features, and their hardware and software. You might start to build the meter from the application requirements. […]

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Have You Had a Good Automation Industry Laugh Today?

Humor can provide insights by opening the mind to the strange but true aspects of ourselves and our profession. Successful humor can cause a smile before the participant realizes the full nature of the situation. The humor in my books tends not to be slapstick in your face humor but more cerebral in nature. Hopefully […]

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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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November ISA Training and Education Opportunities

November training and education programs from ISA deliver a variety of topics and specialties, including exam preparation courses for the Certified Control Systems Technician and Certified Automation Professional certifications. Do you need an introduction to measurement and control methodologies and terminology? The end-of-year offering of these five seminars, the first of which begins in late […]

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Pressure transmitter in oil and gas process

Are You In a Calibration Rut?

The process industry has seen impressive technological advances in past years, with the introduction of smart transmitters, documenting calibrators, communicators and robust calibration software. Plants are able to have a fully automated and integrated calibration system. However, evidence indicates that many companies with an existing enterprise system typically have only established (but not updated) a […]

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Adaptive Backstepping Sliding Mode Control with Fuzzy Monitoring Strategy for a Kind of Mechanical System

Abstract: A novel adaptive backstepping sliding mode control (ABSMC) law with fuzzy monitoring strategy is proposed for the tracking-control of a kind of nonlinear mechanical system. The proposed ABSMC scheme combining the sliding mode control and backstepping technique ensure that the occurrence of the sliding motion in finite-time and the trajectory of tracking-error converge to equilibrium […]

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