The machine for tool sharpening

Adaptive Backstepping Sliding Mode Control of Flexible Ball Screw Drives

Abstract: This paper presents a method to model and design servo controllers for flexible ball screw drives with dynamic variations. A mathematical model describing the structural flexibility of the ball screw drive containing time-varying uncertainties and disturbances with unknown bounds is proposed. A mode-compensating adaptive backstepping sliding mode controller is designed to suppress the vibration. […]

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Hydraulic engineer

December Technical Training and Exam Preparation from ISA

December features ISA’s last Technician Training Boot Camp for 2014. The course focuses on the knowledge required by a control systems technician with five years experience in performing maintenance, calibration and troubleshooting tasks typical of a plant floor environment. Other educational opportunities include CCST and CMRT exam preparation courses plus ISA’s class on  Safety Instrumented […]

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implementation process

Webinar Recording: How to Avoid the Pitfalls of Implementing a Calibration Process Change

After you have made the decision to get out of your calibration rut, the next step is to outline a system implementation process. Remember that implementing a fully integrated, automated calibration solution is a process. It simply won’t happen overnight, and needs to be done in steps. Before talking about the steps, let’s review a […]

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petrochemical co-workers working in the plant

Four Myths About Why We Have a Shortage of Engineers

There seems to be a wealth of articles detailing the problems the automation industry has finding and developing new talent. There are statistics that say there is a shortage of STEM (science, technology, engineering, and mathematics) students in our universities, that there are not dedicated degrees that focus on automation, and that the demographics in […]

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computer-learning

Creating Twenty-First Century Learning Systems

A highly skilled workforce is the lifeblood of any successful company, industry, or national economy. The U.S. has been the breeding ground for the world’s most innovative economy, companies, and products in large part because it offered a diverse pool of talented, highly educated workers. But evidence of a decline is surfacing, precipitated by three […]

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Fragment of illuminated ship control panel in the dark. Selectiv

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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flowmeter

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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