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Zhao B.,Yantai Engineering and Technology College
Advanced Materials Research | Year: 2014

In order to achieve reliable drive for Permanent-magnet DC moment motor and highprecision control, we use special chips designed HIP4081 H-bridge PWM motor drive circuit bipolar reversible, with DSP as the controller completed a two-way rotation and permanent magnet DC motor speed control. Experiments show that the circuit is safe, reliable, environmental adaptability, good thermal conductivity, high efficiency, applicable to Permanent-magnet DC moment motor powered a variety of control systems. © (2014) Trans Tech Publications, Switzerland. Source


Lian P.P.,Yantai Engineering and Technology College
Advanced Materials Research | Year: 2014

SuperSpeed bus, also known as USB3.0 bus or SuperSpeed USB bus, is the newest USB bus technology. This paper presents an innovative DMA transfer method called Multi-thread Chain DMA for SuperSpeed bus video data transmissions. The maximum 5Gbps giant data rate of SuperSpeed bus demands a high speed and high reliability DMA method. However, traditional DMA method can not achieve this required data rate due to its separate data transmission and reception. Unlike traditional DMA method, utilizing a novel designed mechanism, Multi-thread Chain DMA transfer method transmits and receives data concurrently, achieves SuperSpeed data rate and guarantees no data loss. Furthermore, one communication protocol for SuperSpeed video transmission is designed and implemented to comply with USB Video Class (UVC) standard. The field trial has demonstrated Multi-thread Chain DMA transfer method and SuperSpeed video communication protocol in the article are feasible and rich in value of research. © (2014) Trans Tech Publications, Switzerland. Source


Liang X.Y.,Yantai Engineering and Technology College
Applied Mechanics and Materials | Year: 2014

Cloud computing is based on cloud storage. Cloud storage through a variety of technical storage device abstraction into virtual storage resource pool. Compared with the traditional way of storage, it has the scalability and high performance, low cost and other advantages. Different cloud storage systems have different technical architecture and characteristics. From the perspective of metadata if there is a center node, with and without the typical cloud storage system to do a simple introduction and mainly for open source without Gluster center system are analyzed in focus. © (2014) Trans Tech Publications, Switzerland. Source


Zhou W.H.,Yantai Engineering and Technology College
Advanced Materials Research | Year: 2014

According to the characteristics of the traditional soilless cultivation of vegetables and the requirement of its application in the family green vegetable planting, a hanging vegetable's planting barrel was designed which has a small footprint and independent rotating function, the speed expression of the barrel was given using the conservation of moment of momentum and momentum theorem, and its influencing factors were discussed also. © (2014) Trans Tech Publications, Switzerland. Source


Sun Y.L.,Yantai Engineering and Technology College
Advanced Materials Research | Year: 2014

Though the study of carbon content on the microstructure and properties of gray cast iron, mechanical properties test as well as metallographic observation, we could see that the mobility of molten iron is the best when carbon equivalent control at around 4.3%; Liquid iron tend to precipitate A or B type graphite and enhance the casting organization and property when carbon content was increased properly. © (2014) Trans Tech Publications, Switzerland. Source

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