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三维五轴平型织造技术与织机虚拟样机研究 被引量:1
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作者 周能 王益轩 +3 位作者 陈雨 李鹏飞 王永强 刘静 《纺织器材》 2018年第1期10-12,15,共4页
为充分发挥三维多轴织物作为产业用织物的优势,拓宽其应用领域,基于编织/机织混合的原理,在充分研究三维五轴织物结构和织造工艺的基础上,设计了三维五轴平型织机预制件结构,并对三维五轴平型织机进行了概念化设计;确定了三维五轴织造... 为充分发挥三维多轴织物作为产业用织物的优势,拓宽其应用领域,基于编织/机织混合的原理,在充分研究三维五轴织物结构和织造工艺的基础上,设计了三维五轴平型织机预制件结构,并对三维五轴平型织机进行了概念化设计;确定了三维五轴织造过程中斜纱、垂纱、纬纱引导机构和综框运动机构、卷取机构、压紧机构、定型机构间运动配合原理及各机构间运动时间配合关系。指出:斜纱引导块连续、循环地以"蛇行"方式运动引导斜纱角度在±45°切换,使织机结构更紧凑,织造幅宽大幅增加;非间隔垂纱引导方式可织造普通三维五轴织物,间隔垂纱引导方式可织造"蜂巢"型三维五轴织物;三维五轴平型织机的设计为三维多轴平型织机虚拟样机及其物理样机的研制提供理论基础。 展开更多
关键词 三维五轴 织造 多轴织物 “蜂巢”型 斜纱 间隔垂纱 纬纱引导机构
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A fractional-order multifunctional n-step honeycomb RLC circuit network 被引量:2
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作者 Ling ZHOU Zhi-zhong TAN Qing-hua ZHANG 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2017年第8期1186-1196,共11页
We investigate a multifunctional n-step honeycomb network which has not been studied before. By adjusting the circuit parameters, such a network can be transformed into several different networks with a variety of fun... We investigate a multifunctional n-step honeycomb network which has not been studied before. By adjusting the circuit parameters, such a network can be transformed into several different networks with a variety of functions, such as a regular ladder network and a triangular network. We derive two new formulae for equivalent resistance in the resistor network and equivalent impedance in the LC network, which are in the fractional-order domain. First, we simplify the complex network into a simple equivalent model. Second, using Kirchhoff's laws, we establish a fractional difference equation. Third, we construct an equivalent transformation method to obtain a general solution for the nonlinear differential equation. In practical applications, several interesting special results are obtained. In particular, an n-step impedance LC network is discussed and many new char- acteristics of complex impedance have been found. 展开更多
关键词 Honeycomb network Equivalent transformation Fractional differential equation Impedance characteristics
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