ABSTRACT
This paper proposes a method using a limited number of measured postures to estimate the hand posture necessary to push a button on an automobile steering wheel by the thumb tip. The estimation is divided into two processes. First, the approximate posture to push a button is calculated by interpolation using measured reference postures. Then, the posture is adjusted so that the thumb tip reaches a given goal as nearly as possible using optimization method. The accuracy of the proposed method is validated by comparing the estimated postures with measured ones that are not used as reference postures.
