인간공학적 설계를 위한 다목적 최적화 기반의 인체 자세 모델링

Abstract

The importance of product design based on ergonomics, using the digital human model, has recently emerged in the entire industry. Various human models, from simplified segment models to detailed shape models, have been developed and used in actual product design. It is preferential, when using human models, to ensure that the modeling of digital human posture resembles real specimens. Due to the variety of product design environments and the high degree of freedom achieved by the human body, however, there are difficulties in accurately modeling the human posture. In this paper, we propose a multi-objective, optimization-based modeling method that is capable of considering the unique characteristics of the human body. To begin our method, we generated a digital human model. This model is realistically shaped, having been generated using human 3D scan data provided by the Size Korea. We then formulated an optimization problem to model the human posture. Since it is difficult to express human posture in a single objective function, we defined many objective functions and then defined constraints to make the human reach a specific point. This allowed us to perform the optimization that minimized the objective functions and, as a result, we were able to successfully model the digital human posture. This method used only the setting of the position of a specific point, and enabled us to achieve a more natural human posture, something that would have been difficult if conventional methods had been used. We will now be able to use this modeling method in the ergonomic design of various examples of construction machinery and automobiles.