A novel framework for non-Manhattan channel routing considering crosstalk and wire length reduction is proposed. To handle crosstalk and wire length reduction problem, an improved non-Manhattan router in the gridded r...A novel framework for non-Manhattan channel routing considering crosstalk and wire length reduction is proposed. To handle crosstalk and wire length reduction problem, an improved non-Manhattan router in the gridded routing model is developed, and a novel rerouting algorithm based on segment-rerouting technique and layer reassignment is presented. Simulation exDeriments demonstrate that our algorithm achieves verv good results.展开更多
In order to optimize the Castex process of AS wire, the systematic experiments have been done for different process parameters with self-made DZJ-II 350 Castex machine. The parameters, such as casting temperature of a...In order to optimize the Castex process of AS wire, the systematic experiments have been done for different process parameters with self-made DZJ-II 350 Castex machine. The parameters, such as casting temperature of aluminum, flow of cooling water, extrusion ratio and the gap between the surface of wheel and that of the mould, have been mainly studied. The results show that with the increase of casting temperature or rotating speed of wheel the measured length of liquid metal zone increases too. However, the length of liquid metal zone decreases with the increase of the flow of cooling water. Moreover, the relationship between the extrusion ratio and the extrusion power is studied.展开更多
金属丝电爆炸放电波形研究是分析负载能量耦合效率等特性的基础。为此,采用步进电机驱动金属丝端部向高压平板电极运动,通过高压电场击穿环境气体,将大电流导入金属丝中,完成电爆炸。基于该实验方案,提出了一种金属丝电极向高压电极运...金属丝电爆炸放电波形研究是分析负载能量耦合效率等特性的基础。为此,采用步进电机驱动金属丝端部向高压平板电极运动,通过高压电场击穿环境气体,将大电流导入金属丝中,完成电爆炸。基于该实验方案,提出了一种金属丝电极向高压电极运动过程中、环境气体击穿时,两电极间气隙长度的计算方法。并利用电路模型对氩气中铝电爆炸丝放电电流进行了数值模拟,最后分析了不同实验因素(充电电压、金属丝直径及充气压力)对放电电流波形的影响。结果表明:将计算得到的气隙长度代入电路模型,模拟得到的金属丝放电电流波形与实验测量结果基本相符;当充电电压由20 k V提高到28 k V时,放电电流峰值、上升速度分别增大了约6 k A、10 k A/μs,金属蒸汽击穿时刻提前了近0.4μs;当氩气气压从0.10 MPa提升到0.20 MPa时,金属蒸汽击穿时刻由1.5μs推迟到2.1μs。展开更多
文摘A novel framework for non-Manhattan channel routing considering crosstalk and wire length reduction is proposed. To handle crosstalk and wire length reduction problem, an improved non-Manhattan router in the gridded routing model is developed, and a novel rerouting algorithm based on segment-rerouting technique and layer reassignment is presented. Simulation exDeriments demonstrate that our algorithm achieves verv good results.
文摘In order to optimize the Castex process of AS wire, the systematic experiments have been done for different process parameters with self-made DZJ-II 350 Castex machine. The parameters, such as casting temperature of aluminum, flow of cooling water, extrusion ratio and the gap between the surface of wheel and that of the mould, have been mainly studied. The results show that with the increase of casting temperature or rotating speed of wheel the measured length of liquid metal zone increases too. However, the length of liquid metal zone decreases with the increase of the flow of cooling water. Moreover, the relationship between the extrusion ratio and the extrusion power is studied.
文摘金属丝电爆炸放电波形研究是分析负载能量耦合效率等特性的基础。为此,采用步进电机驱动金属丝端部向高压平板电极运动,通过高压电场击穿环境气体,将大电流导入金属丝中,完成电爆炸。基于该实验方案,提出了一种金属丝电极向高压电极运动过程中、环境气体击穿时,两电极间气隙长度的计算方法。并利用电路模型对氩气中铝电爆炸丝放电电流进行了数值模拟,最后分析了不同实验因素(充电电压、金属丝直径及充气压力)对放电电流波形的影响。结果表明:将计算得到的气隙长度代入电路模型,模拟得到的金属丝放电电流波形与实验测量结果基本相符;当充电电压由20 k V提高到28 k V时,放电电流峰值、上升速度分别增大了约6 k A、10 k A/μs,金属蒸汽击穿时刻提前了近0.4μs;当氩气气压从0.10 MPa提升到0.20 MPa时,金属蒸汽击穿时刻由1.5μs推迟到2.1μs。
