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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So, trjz 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.
Seventy-six Standard Solutions were developed for solving standard problems based on the Patterns of Evolution of Technological Systems.
There are two types of contradictions: 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.
The addition of a new FR, or substitution of one of the FRs by a new trix means the previous system is an inefficient Su-field model, i.
These tools are developed based on the accumulated human innovation experience and the vast patent collection. Overcoming contradiction means the removal of functional coupling in AD.
Part 2 appeared in September, 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 dseign ideas in essence. However, TRIZ abstracts the design problem as either the contradiction, or the Su-field model, or the required function realization. It is self-evident that symmetrical parts are easier to manufacture and easier to orient in assembly.
Interchangeable parts allow for the reduction axio,atic inventory, as well as the simplification of manufacturing and service operations, i. Conparison 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 .
Iterations between FR-to-DP mapping and the functional decomposition suggest a zigzagging between the functional and physical domains. Any deviation from the complete Su-field triangle, for example missing elements or occurring inefficient and undesired functions, reflects the existence of a problem.
It states there is always an uncoupled design that involves less compaarison than a coupled design. A technological contradiction is derived from a physical contradiction.
The main axiom of TRIZ is that the evolution of technological systems is governed by objective patterns. When there are n functional requirements, the total information is given by equation 7.
Decouple or separate parts or aspects of a solution if FRs are coupled or become interdependent in the proposed design. 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.
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.
Required function analysis is the first step to use this knowledge base to look up the recommendations for accomplishing the objective.
A Comparison of Triz and Axiomatic Design – Semantic Scholar
But where this idea could be found? 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.
These patterns can be employed for conscious development of technological system and inventive problem solving, replacing the inefficiencies of blindly searching. The mapping between the customer and functional domains is defined as concept design; the mapping between functional and physical domains is product design; the mapping between the physical and process domains corresponds to process design.
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.
Contradiction analysis is the fundamental step to apply 40 inventive principles, one of the knowledge base tools. It is obvious that this integration should not result in a technical contradiction, that is a coupling.
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. Kai Yang and Hongwei Zhang kyang mie. Then corresponding knowledge base tools are applied once the problem is analyzed and modeled. However, mere physical integration is not desirable if it results in an increase of information content or in a coupling of functional requirements.
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. Thus, the conclusion was that an idea of a design solution to new problem might be already known.
TRIZ, based on a systematic view of technological world, provides techniques and tools, which help designers to create a new design idea and avoid numerous trails and errors during a problem solving process. The Axiomatic Design approach to the execution of the above activities is based on the following key concepts: These analytical tools do not use every piece of information about the product where the problem resides.
IFR helps an engineer to focus on concepts that minimize requirements in substance, energy and complexity of engineering product and process.
A Comparison of Triz and Axiomatic Design
A given set of FRs must be successfully mapped to a set of DPs in the physical domain prior to the decomposition of the FRs.
This corollary is a consequence of Axiom 1 and 2. Seek an uncoupled design that requires less information than coupled designs in satisfying a set of FRs. In the process design, a set of process variables PVs is created by mapping the DPs in physical domain to the process domain. This pattern states that technological systems tend to develop first toward increased complexity i.
Traditionally, product and process have been designed based on know-how and trail-and-error; however the empiricism of a designer is limited and can lead to costly mistakes.