A comb-drive actuator for lateral movement of over 100μm under low driving voltage is designed. Side stability is analyzed to improve the performance of the actuator. According to the analysis,a comb-drive actuator w...
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A comb-drive actuator for lateral movement of over 100μm under low driving voltage is designed. Side stability is analyzed to improve the performance of the actuator. According to the analysis,a comb-drive actuator with small comb gap,high-stiffness-ratio prebent suspension beams, non-initial overlap, and linear-engaged-length comb teeth is proposed and the parameters of the actuator are derived. Experiments indicate that the actuator resonates at 573Hz with a Q factor of 35.88 and reaches a maximum displacement of over 100μm at a driving voltage of 7IV,which fulfills the design requirements and matches the analytical value to within 2.1%.
对ZG离线TTP(trusted third party)公平非否认协议及其一种改进方案进行了分析,针对原协议因引入协议有效期而存在消息延迟攻击的问题以及改进方案存在子协议被滥用的问题,提出2种新的改进方案。2种方案侧重点不同,分别适用于不同的场景...
详细信息
对ZG离线TTP(trusted third party)公平非否认协议及其一种改进方案进行了分析,针对原协议因引入协议有效期而存在消息延迟攻击的问题以及改进方案存在子协议被滥用的问题,提出2种新的改进方案。2种方案侧重点不同,分别适用于不同的场景,能够保证非否认性和公平性的同时,避免消息延迟攻击和子协议被滥用。第一种方案适合于对协议效率要求比较高,而且协议被滥用不会影响参与协议主体的利益的情况;第二种方案可用于需要防止子协议被滥用的情况。
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