Power supply for Unmanned Aerial Vehicle (UAV) low voltage, high current output, so conventional diode rectifier circuit had been unable to meet the high efficiency in switching power supply, which should selected synchronous rectification (SR). But conventional gate charge retention drive existed dead time and constant drive voltage problems. In this paper, proposes a new gate charge retention drive to improve the phenomenon. Using Saber to analysis the two methods, we could verify the accuracy of the theory. Finally, 72v input 6v/20 output forward converter are designed using the new methods and 90% efficiency is achieved at full load.
Consumers’ evaluation of cigarette quality directly affects their willingness to repeat purchase. In order to find out the relationship between the consumer evaluation indicator and the quality of cigarette products, to effectively guide the improvement of cigarette manufacturing technology, based on the evaluation standards of the sensory quality of the cigarette industry, the hierarchical structure indicator of attribute elements of cigarette products are established by using the analytic hierarchy process. Through the quantitative investigation of consumers and the investigation of experts, combined with the correlation analysis, the correlation degree between the evaluation indicators of consumers and the design elements of product attributes is verified, and the path is modified and optimized by Shapley value decomposition method. Finally, the transformation path of the internal quality demand of cigarette consumers is completed Build. The establishment of this path can effectively solve the problems of correlation between cigarette sensory quality and cigarette manufacturing technology, as well as the corresponding relationship between cigarette sensory quality and consumer evaluation of cigarette quality indicators. It is of considerable significance to effectively guide the improvement of cigarette product formula and improve consumer satisfaction through consumer evaluation.
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