In this paper, an efficient algorithm strategy for synchronous rectification (SR) used in LLC resonant converters is proposed. The output voltage and the primary resonant inductor current of LLC converter are combined...
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ISBN:
(纸本)9781509034741
In this paper, an efficient algorithm strategy for synchronous rectification (SR) used in LLC resonant converters is proposed. The output voltage and the primary resonant inductor current of LLC converter are combined together to produce suitable drive signals for SR in the below resonance mode. In the other resonance modes, the drive signals for SR are synchronous with the drive signals of corresponding primary switches. In order to validate the feasibility of the proposed algorithm strategy, a 300W prototype with 100V input voltage, 25V output voltage is implemented using field-programmable gate array (FPGA). The measured maximum efficiency is 92.1% and the overall efficiency is higher than the one with conventional drive method for SR.
With the rapid development of the Internet, more and more smart devices are beginning to enter people's daily lives. The intelligentization of home appliances has gradually become a trend in home networking. How t...
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ISBN:
(纸本)9783030602482;9783030602475
With the rapid development of the Internet, more and more smart devices are beginning to enter people's daily lives. The intelligentization of home appliances has gradually become a trend in home networking. How to construct and manage smart homes reasonably system has become the focus of research. Considering the needs and characteristics of smart homes, this paper combines edge computing and cloud computing in intelligent home scenarios to design a smart home system. To improve the system's reliability and real-time performance, we propose a cloud and edge collaborative processing algorithm strategy and use Kubernetes container management platform technology to deploy the system uniformly. Experimental results showed that the system has higher operating efficiency than the system using cloud computing as the center and single edge computing as the center, which can further ensure the smart homes real-time requirements.
Computational thinking has become a thinking ability that we need to master in our daily lives. Programming is a way to cultivate computational thinking. This study focuses on the algorithmic links of senior primary s...
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ISBN:
(纸本)9786269689019
Computational thinking has become a thinking ability that we need to master in our daily lives. Programming is a way to cultivate computational thinking. This study focuses on the algorithmic links of senior primary school students in programming activities, puts forward a hierarchical table of algorithmic strategies, and analyzes their strategic development paths according to their programming *** this paper, Swift Playgrounds, developed by Apple Company, is selected as the tool of programming activities, and three levels are selected as the teaching content in the three theme activities of Learning Programming 1 in Swift Playgrounds software. The target audience of the activities is the senior (fourth to sixth grade) students in primary schools. This paper studies the design of the micro-generation method, carries out programming activities based on computational thinking for students through pre-test, practice, post-test and migration stages, and collects data by interview and classroom observation so as to analyze the development path of students' algorithm strategies in different stages and the change track of algorithm strategies in each stage. This study provides some support for teachers' teaching in programming teaching activities.
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