Contents 1. Introduction
On designing a product, usability can be evaluated virtually by estimating grasps for the CAD model of the product using a digital hand [1]. It has two merits. One is cost saving, and the other is to be able to consider various hands’ posture easily. Previous studies on grasp synthesis have been focusing mainly on healthy hands (e.g., [2] [3] [4]). However, in recent years, market size of universal design products tends to expand. Thus, it is important to synthesize grasps by various hand models including non-healthy hands (e.g., whose finger’s range of motion, ROM, is restricted). Therefore, the purpose of this study is proposing a method to clarify the features of grasping styles of ROM-limited hands. This will contribute to grasp synthesis for ROM-limited hands and help to realize the virtual evaluation of universal design products.
