Papers by Author: Yi Bo Yang

Abstract: China has been actively promoting the national “urban minerals” demonstration bases, which brings great opportunities to upgrade the e-waste recycling network. This paper analyzed two problems of Beijing e-waste recycling network: lack of fundamental data and inefficiency of resources utilization, revealing that informationization is the effective way to promote scientific management and high-efficient operation of the e-waste recycling network. The main content of informationization is to build an information management system, and its primary objective is to informationize business processes. According to requirement analysis, system functions are preliminarily designed. The information management system would improve operating efficiency of the recycling network, as well as act as a basic tool of supervision, and also provide a reference for the development of e-waste recycling network of Beijing and other cities of China.

Abstract: A novel silicon based dual-mass vibrating tuning fork vibratory gyroscope (TFG) with differential capacitor structure is designed in this paper. the U-shaped beam is adapted to connecting the two decoupling movement of the framework structure in order to achieve the independent of the movement of drive direction and sense direction. The TFG structure is also optimized to further reduce the mechanical coupling of the device. The drive combs are designed on the mass, while the sense combs are designed on the frame. All the combs in this gyroscope are dominated by slide-film air damping in order to lower the air damping. This gyroscope is designed to obtain robust operation against variations under atmospheric pressure condition. The TFG is tested at atmospheric pressure with a sensitivity of 17.8mV/◦/s and a linearity of 99.989%, capacitance structure sensitivity is 21.5αf/◦/s with an equivalent noise angular rate of 0.028◦/s/Hz1/2, respective.