The paper presents a multi-rigid model of arm for an impact between a tennis ball and racket, and makes dynamic analysis of it. The input to the model is the impact force caused by a tennis ball and racket. Its value comes from the deflection of the racket stringbed detected by a high speed camera and the stiffness of the racket stringbed is measured by a force gage. The effect of the impact force on the elbow is analyzed in order to research the pathogenesis of tennis elbow.

In order to quantitatively evaluate the beauty of the interface layout of the TV remote control, six beautification metrics are selected: balance, symmetry, continuity, cohesion, integrity, simplicity, and regularity, and quantify them separately. The analytic hierarchy process is introduced to calculate the weight of each indicator, and a comprehensive beauty calculation formula method for the layout of interface elements is proposed. Taking the interface element layout design of several TV remote controllers sold in T-mall software as an example, the objectivity and accuracy of the calculation method for evaluating the aesthetic degree of interface element layout are verified, and the weight of each aesthetic element can be reflected. The degree of influence of indicators on the comprehensive beauty of the TV remote control interface design helps guide designers to understand the importance of each indicator to the TV remote control interface design, and to improve the interface layout design of such products.

This paper proposes a multi-fingered robot hand for the application of Chinese massage, which has a long history and is an important part of Chinese medicine. It is very helpful for human body conditioning and therapy. This research is about a new and feasible application of multi-fingered robot hand. The robot hand which has six degree of freedom (6-DOF) realizing 3translation-3 rotation (3T-3R) can automatically do the full massages process including pushing, picking-up and kneading actions to get the best therapy effect. In order to imitate a real human’s hand, we have designed four fingers for the robot hand. A single motor and connecting rod driving are chosen for fingers and closed-loop control is adopted for the robot hand by collecting and processing the signal of encoder and force sensor.