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Computer-aided model generation and validation for dynamic systemsBrisbine, Brian P. 11 August 1998 (has links)
The primary goal of any model is to emulate, as closely as possible, the desired
behavioral phenomena of the real system but still maintain some tangible qualities
between the parameters of the model and the system response. In keeping with this
directive, models by their very nature migrate towards increasing complexity and hence
quickly become tedious to construct and evaluate. In addition, it is sometimes necessary
to employ several different analysis techniques on a particular system, which often
requires modification of the model. As a result, the concept of versatile, step-wise
automated model generation was realized as a means of transferring some of the laborious
tasks of model derivation from the analyst to a suitable program algorithm. The focus of
this research is on the construction and verification of an efficient modeling environment
that captures the dynamic properties of the system and allows many different analysis
techniques to be conveniently implemented. This is accomplished through the
implementation of Mathematica by Wolfram Research, Inc..
The presented methodology utilizes rigid body, lumped parameter systems and
Lagrange's energy formalism. The modeling environment facilitates versatility by
allowing straightforward transformations of the model being developed to different forms
and domains. The final results are symbolic expressions derived from the equations of
motion. However, this approach is predicated upon the absence of significant low
frequency flexible vibration modes in the system. This requirement can be well satisfied
in the parallel structure machine tools, the main subject of this research.
The modeling environment allows a number of techniques for validation to be
readily implemented. This includes intuitive checks at key points during model derivation
as well as applications of more traditional experimental validation. In all presented cases
the analysis can be performed in the same software package that was used for model
development.
Integration of the generation, validation, and troubleshooting methodology
delineated in this research facilitates development of accurate models that can be applied
in structure design and exploitation. Possible applications of these models include
parameter identification, visualization of vibration, automated supervision and
monitoring, and design of advanced control strategies for minimization of dynamic tool
path errors. The benefits are especially prevalent in parallel structure machine tools,
where there is still a lack of experience. Latest developments in measurement techniques
and the emergence of new sensors facilitate reliable validation and optimization of the
models. / Graduation date: 1999
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Design and specification of a PC-based, open architecture environment controllerWiggins, John Sterling 05 1900 (has links)
No description available.
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An investigation of some dynamic aspects and adaptive control of metal turning /Hui, Chi-Hung Heman. January 1982 (has links)
No description available.
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Development of models of CNC machines EMCO VMC100 and EMCO TURN120P in virtual NC.Renuka, Shivaswaroop R. January 1996 (has links)
Thesis (M.S.)--Ohio University, June, 1996. / Title from PDF t.p.
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Modelling, analysis and control of linear feed axes in precision machine toolsMoscrop, Jeffrey William. January 2008 (has links)
Thesis (Ph.D.)--University of Wollongong, 2008. / Typescript. Includes bibliographical references: p. 227-238.
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Analysis systems for machine tool structural designCuppan, Bruce Craig, January 1967 (has links)
Thesis (Ph. D.)--University of Wisconsin, 1967. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.
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A systematic approach in product development of industrial processing equipmentVuza, Simo S. 25 November 2013 (has links)
M.Phil. (Electrical & Electronic Engineering Science) / The need to industrialise South Africa has been an effort of government to increase manufacturing and Gross Domestic Products (GDP) while also creating decent work. Manufacturing industry has been striking with organisations closing and moving. Organisations have been established and fail to compete in the market due to lack of expertise to produce products that meet the customer`s requirements. Due to the opportunities of industrialisation in Africa the focus to develop equipment for these industries is necessary. This research objective is to develop a Systematic Approach of Product Development for Industrial Processing Equipment manufacturers that supply various organisations. The research will respond to the following question while also defining the development process:- Will product development be helpful in industrialising South Africa and building sustainable manufacturing businesses? Define a process feedback diagram of a systematic approach of product development to be used by industrial processing equipment? The research is done with the use of literature review form published sources which is validated by survey questions that were sent to sustainable successful organizations that supply industrial equipment. The research finding demonstrates the success phases and steps to be followed when developing product. The phases and their steps are;- 1. Marketing phase stages are Identifying Market Opportunities, Evaluating Potential Markets, Identifying Customer`s Needs and Product specification 2. Concept Development phase stages are system engineering for requirements identification & allocations, Internal & external Search of solution, concept selection and concept testing 3. System Level Design phase stages is Product Architecture 4. Detailed Design Phase stages are industrial design and design for manufacturing 5. Refinement and testing phase stages are designing for reliability, prototyping and testing. These are the phases the research focused on. The Survey revealed that success sustainable organisation have been using product development, marketing and system engineering methodologies as one of their common weapon to stay in business and grow in today’s competitive market place. This systematic approach process feedback diagram in product development has a lot of phase overlap. All phases interact even though there is still a feed process from one phase to the next. The process happens concurrently to ensure that all stages are considered at an earlier stage
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The passive control of machine tool vibration with a piezoelectric actuatorStander, Cornelius Johannes 12 January 2007 (has links)
Please read the abstract in the section 00front of this document / Dissertation (M Eng (Mechanical Engineering))--University of Pretoria, 2000. / Mechanical and Aeronautical Engineering / unrestricted
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Hidden Markov models for tool wear monitoring in turning operationsVan den Berg, Gideon 30 May 2005 (has links)
Please read the abstract in the section 00front of this document / Dissertation (M Eng (Mechanical Engineering))--University of Pretoria, 2004. / Mechanical and Aeronautical Engineering / unrestricted
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An investigation of some dynamic aspects and adaptive control of metal turning /Hui, Chi-Hung Heman. January 1982 (has links)
No description available.
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