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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Kai Yang and Hongwei Zhang kyang mie. It states there is always an uncoupled design that involves less information than a coupled design. The needs of the customer are comparkson in customer domain and are stated in the form of required functionality of a tiz in functional domain. No Patterns, principles or tools correspond to this corollary. At each layer of the hierarchy, two axioms are used to assess design solutions.

This means that two or more dependent FRs should be replaced by one equivalent FR.

The PVs specify the manufacturing methods that produce the DPs. The two axioms can be stated as follows: Thus, the conclusion was that an idea of a design solution to new problem might be already known. Required function analysis is the first step to use this knowledge base to look up the recommendations for accomplishing the objective.

Then corresponding knowledge base tools are applied once the problem is analyzed and modeled. Contradiction analysis is the fundamental step to apply 40 inventive principles, one of the knowledge base tools. Figure 6 is the structure of ARIZ [5].

Corollary 6 is a general rule of design and it is nothing to do with invention. Substance field analysis is a TRIZ analytical tool for building functional model for problems related to existing or new technological systems. This corollary states that functional independence must be ensured by decoupling if a proposed design couples the functional requirements.


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.

A Comparison of TRIZ and Axiomatic DesignThe Triz Journal

But where this idea could be found? In general, any properly functioning system can be modeled comparisob a complete triangle as shown in figure 5. Corollary 2 Minimization of FRs Minimize the number of functional requirements and constraints. Use standardization or interchangeable parts if the use of these parts is consistent with FRs and constraints. Symmetrical parts promote symmetry in the manufacturing process.

Contradiction Analysis is a powerful tool of looking problem with the new perspective. No corresponding tools are found in TRIZ. Q states that a good design maintains the independence of the functional requirements. Very early in his research, Altshuller recognized that given a difficult problem, the ideality and ease of implementation of a particular comparisom could be substantially increased by utilizing various physical, chemical and geometric effects, thus a large vast of database has been developed.

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. A and Suh N. Decisions made during the each step of design process will profoundly affect product quality and manufacturing productivity.

The corollary states a well-known design rule: Where, P is the probability of successfully satisfying the functional requirements. The most part deskgn TRIZ tools were axxiomatic 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.


A desirable solution corresponds to the region of overlap between the design range and the system range shown in figure 2 for uniform probability function. The addition of a new FR, or substitution of tgiz of the FRs by a new one means the previous system is an inefficient Trjz model, i. 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.

In this case, enhancing Su-field model is required to improve the system functions. Seventy-six Standard Solutions were developed for solving standard problems based on the Patterns of Evolution of Technological Systems. The region of overlap is called the common range.

Hierarchical decomposition in one domain cannot be performed independently of the other domains, i. Decouple or separate parts or aspects of a solution if FRs are coupled or become interdependent in the proposed design.

Part 2 appeared in September, Axiomatic design pays much attention to the functional, physical and process hierarchies in the design of a system. The standard solution is a recommendation as to what kind of system transformation should be made to eliminate the problem. In applying Effect Knowledge Base tool, one has to select a appropriate function the system wants to perform based on the required function analysisthen the knowledge base provides many alternatives oc delivering the function.

A Comparison of Triz and Axiomatic Design

A physical contradiction might be solved by separation principles. ARIZ is a step-by-step methodwhereby, given an unclear technical problem, the inherent contradictions are revealed, formulated and resolved. Special parts should be minimized to decrease cost.