Formal Synthesis of Safety Controller Code for Distributed Controllers

Formal Synthesis of Safety Controller Code for Distributed Controllers
Author: Dirk Missal
Publisher: Logos Verlag Berlin GmbH
Total Pages: 161
Release: 2012
Genre: Computers
ISBN: 3832531475

Modern control systems in manufacturing are characterized by rising complexity in size and functionality. They are highly decentralized and constitute a network of physically and functionally distributed controllers collaborating to perform the control tasks. That goes along with a further growing demand on safety and reliability. A distributed control architecture supporting functional decomposition of large systems as well as accommodating flexibility of modular systems is defined. This work describes the formal synthesis of distributed control functions for the sub area of safety requirements. The formal synthesis is applied to avoid the potentially faulty influence of human work through the whole process from the formal specification to the executable control function. Starting points are a formal model of the uncontrolled plant behavior and a formal specification of forbidden behavior. The formulation of the specification and the modeling is exemplified on a manufacturing system in lab-scale. The introduced synthesis methods produce controller models describing the correct control actions to achieve the given specification. The methods use symbolic backward search from a forbidden state to determine the last admissible state before entering an uncontrollable trajectory to a forbidden state. Hence, the determination of the reachable state space is avoided to reduce the computational complexity. The use of partial markings leads to a further reduction. The complexity is an important obstacle for the use of formal methods on real-scale applications. The monolithic synthesis approach is proven to result in maximally permissive results. The modular approach is not maximally permissive but the more efficient way to distributed control functions. The implementation of the generated controller model as executable Function Blocks according to IEC61499 is addressed in the last part of this work. The distributed control predicates are embedded as structured text instruction into different interacting Function Block types according to the distributed control structure. This last step finalizes the sequence from a formal model and the specification to fully automatically-generated executable control code.

Controller's Code

Controller's Code
Author: Michael Whitmire
Publisher:
Total Pages:
Release: 2020-04-29
Genre:
ISBN: 9780578653372

Controllers in the 21st Century need to master more than the technical accounting skills to become the strategic leaders their companies need. You need to be an effective leader and manager. You need to explain the debits and credits at a high level to the CFO while keeping one hand in the weeds. You have to anticipate the risks your company faces in an increasingly complex, competitive, and regulatory landscape. And you have to be an expert in ever-changing technology.But how do you learn all these parts of your job? These skills aren't taught alongside the debits and credits in school.In Controller's Code, Mike Whitmire gives you the inside scoop on the skills you need to have a stellar career in the controller's seat. You'll get real-world guidance from finance pros at leading companies so you can write your own success story and play a bigger role at your company.

Programming Robot Controllers

Programming Robot Controllers
Author: Myke Predko
Publisher: McGraw-Hill/TAB Electronics
Total Pages: 474
Release: 2003
Genre: Technology & Engineering
ISBN: 9780071408516

* Details the PICmicro microcontroller * Covers designing the robot system, software development, and advanced programming * Explains microcontroller connections

Class, Codes and Control: Theoretical studies towards a sociology of language

Class, Codes and Control: Theoretical studies towards a sociology of language
Author: Basil B. Bernstein
Publisher: Psychology Press
Total Pages: 226
Release: 2003
Genre: Children
ISBN: 0415302870

'Bernstein's hypothesis will require [teachers] to look afresh not only at their pupils' language but at how they teach and how their pupils learn.'Douglas Barnes, Times Educational Supplement'His honesty is such that it illuminates several aspects of what it is to be a genius.'Josephine Klein, British Journal of Educati.

iOS Programming for .NET Developers

iOS Programming for .NET Developers
Author: Josh Smith
Publisher: Lulu.com
Total Pages: 303
Release: 2012-07-14
Genre: Computers
ISBN: 0985784512

This book is a field guide for .NET developers exploring the foreign world of native iOS programming. It explains the iOS development platform by comparing and contrasting it with tools, APIs, and concepts familiar to .NET developers. The author, Josh Smith, was a Microsoft MVP for four years thanks to his technical and written contributions in the Client Application Development community. He has worked on enterprise iOS applications since 2010. This is the book he wished had existed when he started learning iOS.

Information-Control Problems in Manufacturing Technology

Information-Control Problems in Manufacturing Technology
Author: Y. Oshima
Publisher: Elsevier
Total Pages: 407
Release: 2014-05-18
Genre: Technology & Engineering
ISBN: 148318823X

Information-Control Problems in Manufacturing Technology contains the proceedings of an international symposium on "Information-Control Problems in Manufacturing Technology" held in Tokyo, Japan, on October 17-20, 1977 under the auspices of the International Federation of Automatic Control. The symposium provided a forum for discussing various engineering and technical problems in the automation of every step of the manufacturing process including design, machining, material handling, assembling, and inspection. Comprised of 46 chapters, this book begins by describing the modeling and simulation of a production system for small batch size metalworking production with high automation and high flexibility. The discussion then turns to the conceptual design of a multi-purpose automated Integrated Production Center for batch or piecewise production; research issues for automatic assembly; and practical application of diagnostic signature analysis to testing of rotating machines. Subsequent chapters focus on a profile pattern recognition system for machine parts; automatic inspection of defects on contact parts; the use of material-handling robots for programmable automation; and extra-cyclic passages of gray codes and their applications in numerical control design. This monograph will be of interest to engineers and technicians employed in the manufacturing industry.

Air Traffic Control

Air Traffic Control
Author: United States. Federal Aviation Administration
Publisher:
Total Pages: 340
Release: 1984
Genre: Air traffic control
ISBN:

Introduction to Microcontroller Programming for Power Electronics Control Applications

Introduction to Microcontroller Programming for Power Electronics Control Applications
Author: Mattia Rossi
Publisher: CRC Press
Total Pages: 452
Release: 2021-09-29
Genre: Technology & Engineering
ISBN: 100042491X

Microcontroller programming is not a trivial task. Indeed, it is necessary to set correctly the required peripherals by using programming languages like C/C++ or directly machine code. Nevertheless, MathWorks® developed a model-based workflow linked with an automatic code generation tool able to translate Simulink® schemes into executable files. This represents a rapid prototyping procedure, and it can be applied to many microcontroller boards available on the market. Among them, this introductory book focuses on the C2000 LaunchPadTM family from Texas InstrumentsTM to provide the reader basic programming strategies, implementation guidelines and hardware considerations for some power electronics-based control applications. Starting from simple examples such as turning on/off on-board LEDs, Analog-to-Digital conversion, waveform generation, or how a Pulse-Width-Modulation peripheral should be managed, the reader is guided through the settings of the specific MCU-related Simulink® blocks enabled for code translation. Then, the book proposes several control problems in terms of power management of RL and RLC loads (e.g., involving DC-DC converters) and closed-loop control of DC motors. The control schemes are investigated as well as the working principles of power converter topologies needed to drive the systems under investigation. Finally, a couple of exercises are proposed to check the reader’s understanding while presenting a processor-in-the loop (PIL) technique to either emulate the dynamics of complex systems or testing computational performance. Thus, this book is oriented to graduate students of electrical and automation and control engineering pursuing a curriculum in power electronics and drives, as well as to engineers and researchers who want to deepen their knowledge and acquire new competences in the design and implementations of control schemes aimed to the aforementioned application fields. Indeed, it is assumed that the reader is well acquainted with fundamentals of electrical machines and power electronics, as well as with continuous-time modeling strategies and linear control techniques. In addition, familiarity with sampled-data, discrete-time system analysis and embedded design topics is a plus. However, even if these competences are helpful, they are not essential, since this book provides some basic knowledge even to whom is approaching these topics for the first time. Key concepts are developed from scratch, including a brief review of control theory and modeling strategies for power electronic-based systems.

Programming IOS 7

Programming IOS 7
Author: Matt Neuburg
Publisher: "O'Reilly Media, Inc."
Total Pages: 929
Release: 2013-12-10
Genre: Computers
ISBN: 1449372325

"Dive deep into views, view controllers, and frameworks"--Cover