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Relay feedback identification with additional integrator

IFAC-PapersOnLine 2019年第13期52卷 66-71页

作者： Hofreiter, M. Department of Instrumentation and Control Engineering Czech Technical University in Prague Faculty of Mechanical Engineering Czech Republic

This paper presents a relay feedback technique for identification of dynamical systems for control purposes. The proposed technique uses a biased relay test with an added integration to determine three frequency response points for a phase lag in the range from 0 to 180° from a single experiment. This approach is based on a recently published method called "shifting method". The additional integrator helps to improve the position of the frequency points obtained by the shifting method. The three frequency response points can be used for fitting up to five parameters of a process transfer function with various structures. The paper provides explicit formulas for determining the parameters of the second order model with a time delay from the obtained frequency response points. This approach can be used for the purpose of the controller design. The method is demonstrated on lag dominated, balanced and delay dominated processes. Matlab/Simulink programming environment was used for all experiments. © 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Frequency estimation Controllers Delay control systems Dynamical systems Feedback Frequency response Identification (control systems) MATLAB Parameter estimation Relay control systems Controller designs Identification of dynamical systems Oscillation programming environment Relay control Relay feedback identification Second order models Transport delay

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A MACROSCOPIC PROFILE OF PROGRAM COMPILATION AND LINKING

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IEEE TRANSACTIONS ON SOFTWARE ENGINEERING 1989年第4期15卷 427-436页

作者： LINTON, MA QUONG, RW PURDUE UNIV DEPT ELECT ENGNW LAFAYETTEIN 47907

To profile the changes made to programs during development and maintenance, the authors have instrumented the \'make\' utility that is used to compile and link programs. With minor modifications, they have used \'make\' to find out how much time programmers spend waiting for compiling and linking, how many modules are compiled each time a program is linked, and the change in size of the compiled modules. Measurements show that most programs are relinked after only one or two modules are recompiled, and that over 90% of all recompilations yield object code that is less than 100 bytes larger in size. The authors are using these results to guide the design of an incremental programming environment, particularly with respect to an incremental linker.

关键词： Compilation incremental linking program size distribution programming environment software development profile

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An efficient implementation of SELF, a dynamically-typed object-oriented language based on prototypes

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Lisp and Symbolic Computation 1991年第3期4卷 243-281页

作者： Chambers, Craig Ungar, David Lee, Elgin Computer Systems Laboratory Stanford University Stanford 94305 California United States

We have developed and implemented techniques that double the performance of dynamically-typed object-oriented languages. Our SELF implementation runs twice as fast as the fastest Smalltalk implementation, despite SELF's lack of classes and explicit variables. To compensate for the absence of classes, our system uses implementation-level maps to transparently group objects cloned from the same prototype, providing data type information and eliminating the apparent space overhead for prototype-based systems. To compensate for dynamic typing, user-defined control structures, and the lack of explicit variables, our system dynamically compiles multiple versions of a source method, each customized according to its receiver's map. Within each version the type of the receiver is fixed, and thus the compiler can statically bind and inline all messages sent to self. Message splitting and type prediction extract and preserve even more static type information, allowing the compiler to inline many other messages. Inlining dramatically improves performance and eliminates the need to hard-wire low-level methods such as +, ==, and ifTrue:. Despite inlining and other optimizations, our system still supports interactive programming environments. The system traverses internal dependency lists to invalidate all compiled methods affected by a programming change. The debugger reconstructs inlined stack frames from compiler-generated debugging information, making inlining invisible to the SELF programmer. © 1991 Kluwer Academic Publishers.

关键词： programming environment Efficient Implementation Type Information programming Change Source Method

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Getting Started with CAPI SNAP: Hardware Development for Software Engineers 24th

Getting Started with CAPI SNAP: Hardware Development for Sof...

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International European Conference on Parallel and Distributed Computing (Euro-Par)

作者： Wenzel, Lukas Schmid, Robert Martin, Balthasar Plauth, Max Eberhardt, Felix Polze, Andreas Univ Potsdam Hasso Plattner Inst Digital Engn Operating Syst & Middleware Grp Potsdam Germany

ISBN: (纸本)9783030105495;9783030105488

To alleviate development of FPGA-based accelerator function units for software engineers, the OpenPOWER Accelerator Work Group has recently introduced the CAPI Storage, Network, and Analytics programming (SNAP) framework. However, we found that software engineers are still overwhelmed with many aspects of the novel hardware development framework. This paper provides background and instructions for mastering the first steps of hardware development using the CAPI SNAP framework. The insights reported in this paper are based on the experiences of software engineering students with little to no prior knowledge about hardware development.

关键词： FPGA programming environment Tutorial

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Active Learning: The Almost Silver Bullet 12

Active Learning: The Almost Silver Bullet

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12th International Conference on Knowledge and Systems Engineering (KSE)

作者： Hicks, Eric Tran, Quang Malasri, Kriangsiri Nam Sy Vo Vinhthuy Phan Univ Memphis Comp Sci Memphis TN 38152 USA Vingrp Big Data Inst Computat Biomed Hanoi Vietnam

ISBN: (纸本)9781728145105

Despite its clear benefits, Active Learning (AL) has gone widely unused in favor of traditional teaching models, due to AL's higher costs. With the increased prevalence of software based teaching aids, many of these barriers have been removed and new Active Learning strategies can be more easily implemented. We show that AL can be utilized in the classroom to improve work efficiency, better use TAs, and achieve positive gains in student performance and understanding using integrated lab work.

关键词： programming environment active learning guided learning individualized learning

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Towards program composing assistants

Towards program composing assistants

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International Conference on programming Languages and Compilers

作者： Suvajdzin, Z Hajdukovic, M Univ Novi Sad Fac Engn Dept Comp Sci Novi Sad Serbia Monteneg

ISBN: (纸本)9781932415759

Language-based editing systems have been explored for more than two decades. Over that time many experimental and some practical systems have evolved Although such systems have a great potential of being programmer's assistance, Yet there is not wide-spread practically applied language-based editing system. A new language-based editing system that is based on an intuitive approach, and is aimed to integrate practically important aspects of structure editing, is presented.

关键词： language-based systems structure editor programming environment

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AelE: a versatile tool for teaching programming and robotics using Arduino 50

AelE: a versatile tool for teaching programming and robotics...

引用

50th Latin American Computing Conference (CLEI)

作者： Pablo Fernandez, Gonzalo Cossio-Mercado, Christian Univ Nacl Quilmes Dept Ciencia & Tecnol Bernal Buenos Aires Argentina Univ Buenos Aires Dept Comp Buenos Aires DF Argentina

ISBN: (纸本)9798331540982;9798331540975

There is agreement on the importance of teaching programming as part of the mandatory basic education (i.e., initial, primary and secondary school), as it gives tools to problem solving and abstract thinking, among other things. There are several programming tools that are usually used in schools, Scratch being one of the most famous. In general, Arduino boards are widely used in educational contexts, given their open hardware design as well as the myriad of technical and educational resources that are available freely, and that they allow to work with physical programming as well as with full scale projects. Arduino boards are usually programmed using the Arduino IDE, that is text-based, as well as with block based tools such as mBlock, proprietary tools for Arduino-compatible boards and even extensions of Scratch. Those tools have limitations in order to be used in schools, given that they require the learning of text or block syntax, even when the latter has a softer learning curve. Particularly, some block programming tools are specific to certain kits or boards, do not include a variety of blocks for generic sensors and actuators, have very few blocks that facilitate the programming or are not available in widely used languages such as Spanish. In this work we present the block based Arduino programming Arduino en la Escuela (AelE, that could be translated from Spanish as "Arduino at the School"), that excels in versatility, given that it was used with students from ages, sociocultural context, as well as previous knowledge. The tool was used for courses mostly with secondary school students, but it was also applied in other contexts as with younger children and adults, as well as with teachers and even as part of a prison education program. In all these experiences AelE was well accepted by the students, and the tool was totally suitable in order to complete the required class assignments as well as to work with projects of different kinds.

关键词： programming environment programming Teaching. Arduino Block based programming

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Web interface for image processing algorithms

Web interface for image processing algorithms

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5th Conference on Internet Imaging

作者： Chastel, S Schwab, G Paulus, D Univ Koblenz Landau Inst Comp Visualistik D-56070 Koblenz Germany

ISBN: (纸本)0819452076

In this contribution we present an interface for image processing algorithms that has been made recently available on the Internet (http://***). First, we show its usefulness compared to some other existing products. After a description of its architecture, its main features are then presented: the particularity of the user management, its image database, its interface, and its original quarantine system. We finally present the result of an evaluation performed by students in image processing.

关键词： programming environment interface Internet

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Interactivity: ‘user testing’ for participatory artworks

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International Journal of Performance Arts and Digital Media 2005年第2期1卷 147-173页

作者： Birringer, Johannes School of Art and Design The Nottingham Trent University Victoria Studios Nottingham NG1 4FQ Shakespeare Street United Kingdom

This article explores the new phenomenon of ‘user testing’ and response behaviour for interactive digital installations and programmed environments. After contextualizing the concept of interactivity, it addresses issues relevant to the research in participatory artforms, interaction design, production development (prototyping) and scientific testing comparing interactive dance and digital installations. As a test case, the author describes the DAMPF (Dance and Media Performance Fusions) Lab, a collaborative project supported by various European media organizations, in order to report on the specific challenges arising in the prototyping of interaction design for participatory environments which ask the user to engage a responsive system. © Intellect Ltd 2005.

关键词： Collaborative multimedia creation Dance Installation Interactivity Performance and interface design programming environment Real-time processing User testing of prototypes

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ASIS-for-GNAT: A report of practical experiences 5th

引用

5th Ada-Europe International Conference on Reliable Software Technologies

作者： Rybin, S Strohmeier, A Fofanov, V Kuchumov, A Moscow MV Lomonosov State Univ Sci Res Comp Ctr Moscow 119899 Russia Ecole Polytech Fed Lausanne Swiss Fed Inst Technol Dept Comp Sci CH-1015 Lausanne Switzerland

What are the main difficulties met when implementing ASIS, what are the problems when using ASIS, are there any missing features in ASIS, e.g. when it comes to object-oriented programming, these are some of the topics... 详细信息

ISBN: (纸本)3540676694

关键词： ASIS Ada programming language programming tool programming environment

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