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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Special parts should desihn minimized to decrease cost. There are eight patterns and each pattern consists of several sub-patterns or lines [9]. To aid design decision making, Axiomatic Design theory has been developed in the last decade. 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 [2].

During the mapping process, one should not violate the independence axiom copmarison above.

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Overcoming contradiction means the removal of functional coupling in AD. Axiomatic design pays much attention to the functional, physical and process hierarchies in the design of a system.

IFR helps an engineer to focus on concepts that minimize requirements in substance, energy and complexity of engineering product and process.

Two basic principles, Independence Axiom and Information Axiom, are derived from the generation of good design practices. Consequently, a new design solution must be sought.

The Axiomatic Design approach to the execution of the above activities is based on the following key concepts: 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. 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.

Each system is created to perform anc certain function. It states there is always an uncoupled design that involves less information than a coupled design.

A Comparison of TRIZ and Axiomatic DesignThe Triz Journal

Interchangeable parts allow for the reduction of inventory, as well as the simplification of manufacturing and service operations, i. Though approaches to the solutions are of some differences, many design rules in AD and problem-solving tools in TRIZ are related and share the same ideas in essence.


The number of plausible solutions for any given set of FRs depends on the imagination and experience of the designer. Contradiction table recommends which principles should be considered in solving approximately contradictions.

A physical contradiction might be solved by separation principles. In TRIZ standpoint, a technological problem becomes an invention one when a contradiction compraison overcome. Corollary 4 Use of Standardization Use standardization or interchangeable parts if the use of these parts is consistent with FRs and constraints.

The corollaries and theorems, which are direct consequences or are derived from the axioms, tend to have the flavor of design rules. When the design matrix, for example [A]is diagonal, each of the FR can be satisfied independently by means of one DP and this design is an uncoupled design.

But where this idea could be found? Seek an uncoupled design that requires less information than coupled designs in satisfying a set of FRs.

These patterns can be employed for conscious development of technological system and inventive problem solving, replacing the inefficiencies of blindly searching. Hierarchical decomposition in one domain cannot be performed independently of the other domains, i.

A technical contradiction might be solved by using contradiction table that identifies 39 characteristics most frequently involved in design process. Integration design features into a single physical process, device or system when FRs can be independently satisfied in the proposed solution. Successful innovative experience shows that both problem analysis and system transformations are important to problem solving. This approach also provides a consistent framework from which the metrics of design alternatives can be quantified.

If you like the TRIZ Journal, please help us by donating towards domain space, admin and technical support. Thus, the conclusion was that an idea of a design solution to new problem might be already known. The PVs specify the manufacturing methods that produce the DPs. 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. ARIZ is a step-by-step methodwhereby, given an unclear technical problem, the inherent contradictions are revealed, formulated and resolved. No Patterns, principles or tools correspond to this corollary.


Any deviation from the complete Su-field triangle, for example missing elements or occurring inefficient and undesired functions, reflects the existence of a 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 for delivering the function. TRIZ analytical tools, which include ARIZ, substance field analysis, contradiction analysis and required function analysis, are used for problem modeling, analysis and transformation.

Seventy-six Standard Solutions were developed for solving standard problems based on the Patterns of Evolution of Technological Systems. Part 2 appeared in September, This corollary is a consequence of both Axiom 1 and Axiom 2. Accordingly, TRIZ methodology includes the analytical tools for problem analysis, the knowledge base tools for system changing and their theoretical foundations.

No corresponding tools are found in TRIZ.

The design process usually consists of several steps as follows [1] [3] [8]. In the process design, a set of process variables PVs is created by mapping the DPs in physical domain to copmarison process domain. 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 Design

Functional decoupling may be achieved without physical separation. 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.

This pattern states that technological systems tend to develop first toward increased axionatic i. It states that a good design maintains the independence of the functional requirements.

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.

A and Suh N.