• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2024, Vol. 60 ›› Issue (13): 33-47.doi: 10.3901/JME.2024.13.033

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Evolutionary State Space and Adaptability Evaluation of Complex Competing Products

ZHANG Jian1, SONG Xinxian1, GU Peihua2   

  1. 1. Intelligent Manufacturing Key Laboratory of Ministry of Education, Shantou University, Guangzhou 515063;
    2. International Institute for Innovative Design and Intelligent Manufacturing of Tianjin University-Zhejiang, Shaoxing 312099
  • Received:2023-10-07 Revised:2024-02-09 Online:2024-07-05 Published:2024-08-24

Abstract: Competing products in the marketplace collectively form a complex artificial system that is interrelated, dynamically evolving, and difficult to predict. Adaptability is the capability of a product to be adapted for meeting different requirements. For a complex artificial system of competing products, enhanced product adaptability benefits management flexibility, rapid response to market requirements, reduced manufacturing cost, improved product maintainability and environmental friendliness. Better understanding of product evolution is crucial for enhancing products adaptability. The non-dominated design principle is proposed based on specification comparisons for product evolution analysis. On this basis, multi-order evolutionary state space of complex competing products is defined with mathematical formulations. Characteristics of the evolutionary state space include relativity, dynamicity, uniformity, boundedness, and convergence. Based on the multi-order evolutionary state space, concept and evaluation method of multi-order adaptabilities are proposed. Finally, a wind turbine was used as a case study to analyze and discuss its evolutionary state space and multi-order adaptability, illustrating the newly proposed concepts and methods.

Key words: product evolution, complex system, state space, design evaluation, adaptability

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