scholarly journals Estimation of porosity of rocks based upon axiomatic local linear model tree (a lolimot model) approach

2020 ◽  
Vol 9 (3) ◽  
pp. 785
Author(s):  
Hossein Hossein Iranmanesh ◽  
Ali Mollajan
Keyword(s):  
Linear Model ◽  
Measurement System ◽  
Design Theory ◽  
Axiomatic Design ◽  
Compressional Wave ◽  
Independence Axiom ◽  
Model Tree ◽  
Local Linear ◽  
Before And After ◽  
Axiomatic Design Theory

Shear and Compressional Wave Velocities along with other Petrophysical Logs, are considered as upmost important data for Hydrocarbon reservoirs characterization. In this study, porosity of the extracted rocks form concerned wells is interest as it can indicate the oil capacity of the wells of interest. In this study, we employ the principles of Axiomatic Design theory, specially the first (independence) axiom, to more simplify the measurement system. Also, to clarify the strength of Axiomatic Design theory in reducing the complexity of the system and optimizing the measurement system, we utilize the The Lolimot model (LOcal LInear MOdel Tree) as a model from the neural network family and apply it before and after implementing the basic logic of Axiomatic Design (AD) theory. In addition, in order to illustrate strength of the proposed method emphasizing the effectiveness of a method which benefit from both AD theory and Lolimot model together, the existing system used to measure the rock porosity is addressed and actual data related to one of wells located in southern Iran is utilized. The results of the study show that integrating the Axiomatic Design principles with the LOLIMOT method leads to the least complex and most accurate results.  

Differential Entropy As a Measure of Information Content in Axiomatic Design

1999 ◽  
Author(s):  
Ebad Jahangir ◽  
Dan Frey
Keyword(s):  
Information Content ◽  
Design Theory ◽  
Signal To Noise Ratio ◽  
Quantitative Measure ◽  
Axiomatic Design ◽  
Decision Criterion ◽  
Independence Axiom ◽  
Differential Entropy ◽  
General Measure ◽  
Axiomatic Design Theory

Abstract Axiomatic design theory aims to put the design process on a more scientific footing and is based on two axioms, viz., the independence axiom and the information axiom. Several quantitative measures to determine the degree of independence between functional requirement have been defined in the past and their use illustrated through numerous examples. However, very little work exists on quantifying information content of a design. In this paper, we outline the existing measures of information content and propose a more general quantitative measure. This measure is based on the concept of entropy from information theory. The case of discrete as well as differential entropy is examined in the context of axiomatic design. Differential entropy is proposed as a measure of information content. A case study is presented which demonstrates and compares the use of quantitative measures of information content in a design. It is shown that differential entropy offers a more general measure of information content in a design than Sun’s information measure or Taguchi’s signal-to-noise ratio and, therefore, may serve as a decision criterion in engineering design.

Using Axiomatic Design Theory for Selection of the Optimum Design Solution and Manufacturing Process Plans of a Limited Angle Torque Motor

2014 ◽  
Vol 136 (5) ◽  
Author(s):  
M. Roohnavazfar ◽  
M. Houshmand ◽  
R. Nasiri-Zarandi ◽  
M. Mirsalim
Keyword(s):  
Optimum Design ◽  
Manufacturing Process ◽  
Design Theory ◽  
Reference Signal ◽  
Design Procedure ◽  
Axiomatic Design ◽  
Design Solution ◽  
Independence Axiom ◽  
Axiomatic Design Theory ◽  
Limited Angle

The brushless dc limited angle torque motor (LATM) has been widely used in areas of aerospace equipments, robot drives, optical scanning systems and any drive systems that require limited motion, ranging from the simple ON-OFF servo valves to the accurate tracking of a reference signal. This paper presents the optimum design procedure of a brushless direct current LATM to satisfy the functional requirements (FRs) and constraints using Independence axiom in axiomatic design (AD) approach. Also, to select the best manufacturing process plan, we consider both cost and thermal performance as two effective criteria, and evaluate available alternatives by computing information content in Information axiom. Finally, finite element method is employed to validate the results obtained by optimizations as well as experimental outcomes extracted from the manufactured prototype of the device.

DESIGN ANALYSIS OF THE PROPULSION AND CONTROL SYSTEM OF AN UNDERACTUATED REMOTELY OPERATED VEHICLE USING AXIOMATIC DESIGN THEORY — PART 2

2005 ◽  
Vol 15 (02) ◽  
pp. 161-168 ◽  
Author(s):  
T. H. KOH ◽  
F. E. H. TAY ◽  
M. W. S. LAU ◽  
E. LOW ◽  
G. SEET
Keyword(s):  
Control System ◽  
Design Theory ◽  
Axiomatic Design ◽  
Design Analysis ◽  
Design Parameters ◽  
Independence Axiom ◽  
Functional Requirements ◽  
Remotely Operated Vehicle ◽  
Axiomatic Design Theory ◽  
And Control

In this paper, Axiomatic Design (AD) theory was adopted for the design analysis of an underactuated Remotely Operated Vehicle (ROV) system and its subcomponents. The system design issues of the Propulsion and Control System of the ROV II are analyzed and addressed based on the Independence Axiom methodology. The top-level Functional Requirements (FRs) for the thruster design and configuration are identified and its corresponding Design Parameters (DPs) are also presented.

scholarly journals Axiomatic Design: 30 Years After

2015 ◽  
Author(s):  
Mats Nordlund ◽  
Taesik Lee ◽  
Sang-Gook Kim
Keyword(s):  
Design Process ◽  
Design Theory ◽  
Organizational Design ◽  
Design Research ◽  
Design Thinking ◽  
Axiomatic Design ◽  
Environment Design ◽  
Good Design ◽  
Axiomatic Design Theory ◽  
Practical Experiences

In 1977, Nam P Suh proposed a different approach to design research. Suh’s approach was different in that it introduced the notions of domains and layers in a 2-D design thinking and stipulated a set of axioms that describes what is a good design. Following Suh’s 2-D reasoning structure in a zigzagging manner and applying these axioms through the design process should enable the designer to arrive at a good design. In this paper, we present our own experiences in applying Suh’s theories to software design, product design, organizational design, process design, and more in both academic and industrial settings. We also share our experience from teaching the Axiomatic Design theory to students at universities and engineers in industry, and draw conclusions on how best to teach and use this approach, and what results one can expect. The merits of the design axioms are discussed based on the practical experiences that the authors have had in their application. The process developed around the axioms to derive maximum value (solution neutral environment, design domains, what-how relationship, zig-zag process, decomposition, and design matrices) is also discussed and some updates are proposed.

Exploring a Local Linear Model Tree Approach to Car-Following

2013 ◽  
Vol 28 (8) ◽  
pp. 581-593 ◽  
Author(s):  
Kayvan Aghabayk ◽  
Nafiseh Forouzideh ◽  
William Young
Keyword(s):  
Linear Model ◽  
Car Following ◽  
Model Tree ◽  
Local Linear ◽  
Tree Approach

Application and limitation of axiomatic design complexity in quality engineering

2015 ◽  
Vol 32 (1) ◽  
pp. 3-17
Author(s):  
Naresh K. Sharma ◽  
Elizabeth A. Cudney
Keyword(s):  
Normal Distribution ◽  
Uniform Distribution ◽  
Design Theory ◽  
Bounded Solution ◽  
Current Method ◽  
Axiomatic Design ◽  
Complexity Measure ◽  
Specification Limits ◽  
Content Type ◽  
Axiomatic Design Theory

Purpose – Complexity is an important element in axiomatic design theory. The current method for calculating complexity for a system following normal distribution is unbounded and approximate. The purpose of this paper is to present a detailed bounded solution for complexity using design and system ranges on a single function requirement. Design/methodology/approach – This paper discusses the complexity measure for a system following a uniform distribution. The complexities of two types of systems, a system performing with a uniform distribution and a system performing on target according to a normal distribution are then considered and compared. The research proposes a complexity measure for a system performing within specification limits with a uniform distribution. In addition, a new concept of relative complexity is proposed. Findings – A bounded solution for complexity for a normal distribution based on the existing assumptions was given which includes bias in addition to variance. The bounded solution was then compared to the existing approximate solution from the variance as well as bias standpoint. It was found that bias has an inappropriately reverse relationship with the bounded solution of complexity. Therefore, complexity cannot be used to approximate the system improvement when the improvement is based on a reduction in bias. Originality/value – The current method for calculating complexity for a system following normal distribution is unbounded and approximate. This paper proposed a complexity measure for a system performing within specification limits with a uniform distribution.

Axiomatic Design Applied to Manufacturing Systems Design

1996 ◽  
Author(s):  
Johan Vallhagen
Keyword(s):  
Design Theory ◽  
Manufacturing Systems ◽  
Systems Design ◽  
Axiomatic Design ◽  
Original Model ◽  
Life Cycle Approach ◽  
Support Functions ◽  
Axiomatic Design Theory ◽  
Manufacturing Systems Design ◽  
Satisfactory Manner

Abstract In earlier work, the axiomatic design theory has been analyzed for applications on product design and the production processes that pertain to it, where parts manufacture and assembly take place in flexible and automatic manufacturing systems. The conclusion is that the original model cannot handle the manufacturing aspects in a satisfactory manner. This report proposes an expansion of the axiomatic design model, with a life-cycle approach as take-off. The expansion of the model consists of the introduction of a so-called Manufacturing World with different spaces, where various types of processes and support functions can be developed in agreement with the axiomatic principles. The spaces and their relationships have been defined along with explanations of work procedures. An explanatory example is given.

scholarly journals Axiomatic Design in Obtaining a Device for Ultrasonic Machining

2018 ◽  
Vol 223 ◽  
pp. 01021
Author(s):  
Oana Dodun ◽  
Ema Panaite ◽  
Petru Duşa ◽  
Gheorghe Nagît ◽  
Margareta Coteată ◽  
...  
Keyword(s):  
Design Theory ◽  
Axiomatic Design ◽  
Machining Process ◽  
Drilling Process ◽  
Relative Pressure ◽  
Ultrasonic Machining ◽  
Functional Requirements ◽  
Analytic Hierarchy ◽  
Ultrasonic Drilling ◽  
Axiomatic Design Theory

Ultrasonic abrasive cavitational machining is a nonconventional machining method applied to remove surfaces in workpieces made of brittle, hard, or non-conductive materials that cannot be efficiently machined by other classical or nonconventional machining methods. Among the factors that can affect the values of the parameters of technological interest for the ultrasonic machining process, the relative pressure between the ultrasonic tool and the workpiece surface to be machined could be considered. The main objective of the research presented in this paper was to analyze the possibilities of selecting the most convenient solution among many such available solutions to ensure the tool feed motion, when designing a device for achieving an ultrasonic drilling process. At present, this selection could be achieved by means of an optimal selection method. Taking into consideration some functional requirements of the device, the method of analytic hierarchy process and the axiomatic design theory were used to solve some problems met in the design process.

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