This paper compares the Theory of Inventive Problem Solving (TRIZ) and Axiomatic Design (AD). Both AD and TRIZ are briefly reviewed and their possible . Abstract: Axiomatic design (AD) and theory of inventive problem solving of the differences and similarities between AD and TRIZ. 2 Review of AD and TRIZ. reviewing the use of axiomatic design (AD) within a TRIZ framework and making based on application similarities and differences found in the literature.
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Design parameters that satisfy the functional requirements are defined in physical domain, and in process domain manufacturing variables define how the product will be produced. The corollaries and theorems, which are direct consequences or are derived from the axioms, tend to have the flavor of design rules.
IFR helps an engineer to focus on concepts that minimize requirements in substance, energy and complexity of engineering product and process. In applying Effect Knowledge Base tool, one has to select a appropriate function the system wants to perform based on the required function analysisane the knowledge base provides many alternatives for delivering the function.
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Substance field analysis is a TRIZ analytical tool for building functional model for problems related to existing or new technological systems. Seek an uncoupled design that requires less information than coupled designs in satisfying a set of FRs. But where this idea could be found? Axiomatic design pays much attention to the functional, physical and process hierarchies in the design of a system.
To aid design decision making, Axiomatic Design theory has been developed in the last decade. Iterations between FR-to-DP mapping and the functional decomposition suggest a zigzagging between the functional and physical domains. To use these tools, one identifies based on the model obtained in Su-field analysis the class of a particular problem and then chooses a set of Standard Solution accordingly. Two basic principles, Independence Axiom and Information Axiom, are derived from the generation of good design practices.
Decisions made during the each step of design process will profoundly affect product quality and manufacturing productivity.
TRIZ offers a wide-ranging series of tools to help designers and inventors to avoid trial-and-error approach in design process and to solve problem in creative and powerful ways. Corollary 6 Largest Tolerance Specify the largest allowable tolerance in stating functional requirements. The main axiom of TRIZ is that the evolution of technological systems is governed by objective patterns.
Since the complexity of the solution process necessarily increases with the number of FRs, it is important to describe the perceived design needs in terms of a minimum set of independent requirements.
Corollary 2 states that as the number of functional requirements and constraints increases, the system become more complex and thus the information content is increased.
A Comparison of TRIZ and Axiomatic DesignThe Triz Journal
A technical contradiction might be solved by using contradiction table that identifies 39 characteristics griz frequently involved in design process. Traditionally, product and process have been designed based on know-how and trail-and-error; however the empiricism adn a designer is limited and can lead to costly mistakes.
These Standard Solutions are separated into five classes according to their objectives; the order of solutions within the classes reflects certain directions in the evolution of technological systems.
The knowledge base tools are different from analytical tools in that they suggest the ways for transforming the system in the process tria problem solving while analytical tools help change the problem statement . These patterns and other TRIZ tools are revealed by analysis of hundreds and thousands of inventions available in the world patent database. Figure 4 illustrates the basic structure of TRIZ.
Axiom 1 independence axiom: Contradiction Analysis is a powerful tool of looking problem with the new perspective. This corollary is a consequence of both Axiom 1 and Axiom 2. Part 2 appeared in September, Axiomtic states that a good design maintains the independence of the functional requirements.
When there are n functional requirements, the total information is given by equation 7. Achieve the Right Design.
A Comparison of Triz and Axiomatic Design – Semantic Scholar
Seventy-six Standard Solutions were developed for solving standard problems based on the Patterns of Evolution of Technological Systems. In TRIZ standpoint, a technological problem becomes an invention one when a contradiction is overcome.
Figure 6 is the structure of ARIZ . Corollary 2 Minimization of FRs Minimize the number of functional requirements and constraints. These techniques were derived from the patent database, which relates to novel methods and unique ideas. This means that two or more dependent FRs should be replaced by one commparison FR.
The region of overlap is called the common range. Required function analysis is the first step to use axjomatic knowledge base to look up the recommendations for accomplishing the objective.
Any problem solving process involves two components: Support us If you like the TRIZ Journal, please help us by donating towards domain space, admin and technical support. Figure 3 is a graphic interpretation of the general mapping process between functional and physical domains, and between physical and process domains.
A technological contradiction is derived from a physical contradiction. ARIZ refers to Algorithm for Inventive Problem Solving, a set of successive logical procedures directed at reinterpretation of a given problem.
In general, any properly functioning system can be modeled with a complete axiomxtic as shown in figure 5. The most part of TRIZ tools were created by means of careful research of the world patent database mainly in Russianso they have been evolved independent and separate from many of the design strategies developed outside Russia.
The second axiom is the information anf and it establishes information content as a relative measure for evaluating and comparing alternative solutions that satisfy the independence axiom.