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镀铜生产线收线机组结构分析及简单设计
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作者 张德强 孙高健 《科技风》 2013年第7期24-25,共2页
分析电镀黄铜生产线收线机组的结构及原理,根据客户的要求优化设计收线机组,使设备性能满足客户要求。设备技术参数如下:钢丝直径范围:φ0.8~φ2.2mm;DV值:75mm.m/min;牵引卷筒直径φ300mm;工字轮满盘重量0.5t。
关键词 电镀黄铜生产线 收线机组 集中控制 结构分析 简单设计 工字轮
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钢丝热处理收线机组改造与节能
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作者 冯庆祥 《金属制品》 2001年第6期45-47,共3页
根据收线机组对调速电机的要求 ,利用原收线机组的蜗轮传动机构 ,合理配置调速电机输出轴与收线机传动轴之间的速比 ,可充分发挥调速电机的能力。通过钢丝热处理收线机组的改造 ,减少了拖动电机的维护费用 ,显著降低了能耗 ,达到了节能... 根据收线机组对调速电机的要求 ,利用原收线机组的蜗轮传动机构 ,合理配置调速电机输出轴与收线机传动轴之间的速比 ,可充分发挥调速电机的能力。通过钢丝热处理收线机组的改造 ,减少了拖动电机的维护费用 ,显著降低了能耗 ,达到了节能的目的。 展开更多
关键词 收线机组 改造 节能 钢丝热处理
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THE TR-UWB RECEIVER BASED ON SPATIAL DIVERSITY
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作者 Wang Feng Xu Chengqi Zhang Yan 《Journal of Electronics(China)》 2009年第5期623-630,共8页
This paper presents a new Transmitted Reference (TR) Ultra-WideBand (UWB) receiver based on Spatial Diversity (SD), which employs Multi-Antenna Technology (MAT) to improve the performance of TR-UWB receiver. According... This paper presents a new Transmitted Reference (TR) Ultra-WideBand (UWB) receiver based on Spatial Diversity (SD), which employs Multi-Antenna Technology (MAT) to improve the performance of TR-UWB receiver. According to the amplitude of correlator output of every antenna branch, this paper analyzed the performances of the proposed TR-UWB receiver employing three different kinds of combination strategies, i.e., Maximum Ratio Combination (MRC), Equal Gain Combination (EGC), and Selective Combination (SC), which are different from conventional ones, and theoretically proved that the performance of EGC is better than MRC. Simulation results verify that when EGC is adopted and BER=10-3, increasing three antennas provides Signal to Noise Ratio (SNR) gain of about 3 dB in CM4 channel and SNR gain of about 2 dB in CM2 channel. 展开更多
关键词 Ultra-WideBand (UWB) Transmitted Reference (TR) Spatial Diversity (SD) Multiple Antenna Technology (MAT) Bit Error Rate (BER)
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