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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Contradiction table recommends which principles should be considered in solving approximately contradictions. ARIZ is such a sophisticated analytical tool that it integrates above three tools and other techniques.
Corollary 3 Integration of Physical Parts Integration design features into a single physical process, device or system when FRs can be independently satisfied in the proposed solution.
Part 2 appeared in September, The PVs specify the manufacturing methods that produce the DPs.
Thus, the design axioms are used to determine acceptable design solution. These Standard Solutions are xaiomatic into five classes according to their objectives; the order of solutions within the classes reflects certain directions in the evolution of technological systems.
Since it becomes increasingly difficult to manufacture a product as the tolerance is reduced, more information is required to produce parts with tight tolerances.
A Comparison of TRIZ and Axiomatic DesignThe Triz Journal
When there are n functional requirements, the total information is given by equation 7. The number of plausible solutions for any given set of FRs depends on the imagination and experience of the designer. These patterns can be employed for conscious development of technological system and inventive problem solving, replacing the inefficiencies of blindly searching. In TRIZ standpoint, a technological problem becomes an invention one when a contradiction is overcome. The probability of success is the function of both the design range that the designer is trying to satisfy, and the capability of the proposed solution, which is called the system range.
Not only should the shape be symmetrical wherever possible, but hole location and other features should be placed symmetrically to minimize the information deskgn during manufacture and use.
No Patterns, principles or tools correspond to this corollary. When a given set of FRs is changed by the addition of a new FR, or substitution of one of the FRs by a new one, or by selection of a completely different set of FRs, the design solution given by original DPs cannot satisfy the new set of FRs.
Axiom 2 information axiom: Where, P is the probability of successfully satisfying the functional requirements. This situation can be modeled by a comlarison whose corners represent objects and an action or interaction called a field.
TRIZ focus its studies on inventive problem solving, so it pays less attention to the standardization and interchangeability of physical components. The basic premise of the axiomatic approach to design is that there are basic principles that govern decision making in design, just as the laws of nature govern the physics and chemistry of nature. ARIZ is a step-by-step methodwhereby, given an unclear technical problem, the inherent contradictions are revealed, formulated and resolved.
It is self-evident that symmetrical parts are easier to manufacture and easier to orient in assembly. Axiomatic design pays much attention to the functional, physical and process hierarchies in the design of a system.
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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 comparisson from many of the design strategies developed outside Russia. But where this idea could be found? These tools are developed based on the accumulated human innovation experience and the vast patent collection.
Invention Machine Lab 2. In general, any properly functioning system can be modeled with a complete triangle as shown in figure 5. 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. So, certain changes of the physical structure of a technological system guided by Contradiction Table and 40 Inventive Principles or Separation Principles are often required to remove contradiction, though restatement of the problem may sometimes help to overcome contradiction.
The addition of a new FR, or substitution of one of the FRs by a new one means the previous system is an inefficient Su-field model, i. Studies of patent collections by Altshuller, the founder of TRIZ, indicated that only one per cent of solutions was truly pioneering inventions, the rest represented the use of previously known idea or concept but in a novel way .
Figure 6 is the structure of ARIZ . This corollary states that functional independence must be ensured by decoupling if a proposed design couples the functional requirements. Required function analysis is the first step to use this knowledge base to look up the recommendations for accomplishing the objective.
The corollary states a well-known design rule: Corollary 7 Uncoupled Design with less Information Seek an uncoupled design that requires less information than coupled designs in satisfying a set of FRs. At each layer of the hierarchy, two axioms are used to assess design solutions. Successful innovative experience shows that both problem analysis and system transformations are important to problem solving.
Axiom 1 independence axiom: Iterations between FR-to-DP mapping and the functional decomposition suggest a zigzagging between the functional and physical domains.
A Comparison of Triz and Axiomatic Design
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. However, in many cases, such physical decomposition may be the best way of solving the coupling problem. If you like the TRIZ Journal, please help us by donating towards domain space, admin and technical support.