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TRIZ in a Bi-system, Consisting of TRIZ and Lean Sigma

As any system, TRIZ behaves according to the trends of the General Systems’ Theory. According to one of the trends, technological systems evolve in a general direction from mono-systems to bi- or poly-systems. Then the bi- and poly-systems convolute into mono-systems. TRIZ is not an exception to this trend. To date, TRIZ and a modified Value Engineering (VE) function analysis comprise a mono-system of contemporary TRIZ.

At a close review, TRIZ provides qualitative assessment and analysis of the system under consideration. Yet, in a technical system analysis a numerical representation of system’s features, functionalities and problems is very important as it provides a universal assessment of system’s parameters and provides foundation for comparative analysis of the system and its environment.

Therefore, it is imperative that TRIZ is equipped with necessary tools for quantitative assessment of system’s parameters. In the last 8-10 years a number of attempts were made in combining TRIZ with some other methodologies. Most popular are attempts to combine TRIZ with Six Sigma. However, these attempts were made by Six Sigma experts, who are not very experienced with TRIZ and its tools. As a result, TRIZ is placed in a subordinate position to Six Sigma. Most notable is TRIZ application with DFSS – Design for Six Sigma, where some TRIZ tools are utilized for solution of design issues. A more detailed analysis of these attempts will be provided in the body of the paper. 

Mark G. Barkan, PhD
Certified TRIZ Specialist
Six Sigma Black Belt

Inside TRIZ

Quantifying the TRIZ Levels of Invention

Inside TRIZ


navneet bhushanQuantifying the TRIZ Levels of Invention

A tool to estimate the strength and life of a Patent

TRIZ (Theory of Inventive Problem Solving) classifies inventions into five novelty levels. At level 1 are slight modifications of the existing systems.  At level 2 are those inventions that resolve a system conflict or contradiction using usually inventive solution or inventive principle used to solve similar problems in other systems.    At level 3, the inventions change one subsystem or resolve the system conflicts in a fundamental way. At level 4, the invention gives birth to new systems using interdisciplinary approaches. The level 5 inventions are closer to a recently discovered scientific phenomenon. See article for a complete discussion.



TRIZ Features

Alexander Selutsky

TRIZ Feature

Alexander Selyutsky - a key figure in the history of TRIZ!

Alexander Selyutsky

Selyutsky Alexander Borisovich was born April 6, 1933 to an intelligent Jewish family residing in Leningrad. During the World War II the plant where his father was working was evacuated to the Urals, and the family (the parents and Alexander) moved to Chelyabinsk. Here, Alexander graduated from high school. He wanted to go to a military school, but didn’t pass vision test and entered the Chelyabinsk Polytechnic Institute. In his first year he was forced to learn boxing (because of frequent anti-Semitic attacks) and became a Komsomol activist.

After graduation, he was sent to Petrozavodsk Onega tractor plant, where he worked as a designer. He continued leading a very active social life, organized and led voluntary militia patrolling the streets of the city because the situation was very criminal. In the search for more satisfying work he became interested in patenting, completed appropriate courses and became a patent agent.

In 1960, Alexander married Dolly Naumovna Audleys, and had a daughter Alla in 1961. The same year G.S Altshuller published a book " “Learn how to invent"[1] . After reading this book in 1965 Selyutsky wrote a letter to Altshuller. This letter started their acquaintance by correspondence. Since then, Alexander became one of the most dedicated Altshuller’s disciples and an active promoter of the emerging new science.

They finally met in 1968 in Dzintary (near Riga), at the seminar organized by the Central Board of VOIR (state leading inventors’ and innovators’ society) that invited Altshuller and several of his associates. It was the first time that Alexander and others got a chance to work under the direct guidance of Altshuller and to learn from him. Later, in 1983, Alexander participated as one of the instructors in the seminar conducted by G.S. Altshuller in Moscow at the Institute for continuous education for chemical and petroleum industries.

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