软件接收机的GPS信号实时采集方案设计

针对软件GPS接收机的实时数据采集需求,提出一种基于TMS320C6416McBSP、EDMA、中断和外部扩展SDRAM的GPS实时数据采集方案;重点阐述射频前端NJ1006AK、TMS320C6416构成的硬件接收电路,以及McBSP、SDRAM、EDMA乒乓缓存的采集配置过程。该方案不仅满足了GPS软件接收机信号采集严苛的实时性要求,而且增强了处理器实时处理能力。     

RFID在音圈振膜自动化生产线中的应用

本文针对音圈振膜自动化生产线所选用的RFID系统进行了软硬件设计,详细介绍了V680系列的RFID系统。并在Sysmac Studio编程软件中对其进行通信测试,最后对上游工位下来的载体进行数据采集并将采集到的数据嵌入到本工作站实现相应的动作。     

欧姆龙NJ控制器在二次电池包封配组机上的应用

本文介绍了欧姆龙NJ控制器在二次电池包封配组机上的应用，针对二次电池包封配组机在实际应用中的三个难点，提出了行之有效的解决办法并得到客户高度认可。     

NJ2型机车冷却系统费水的原因分析与预防措施

针对NJ2型机车柴油机费水严重的现状，查找出了真空盖变形漏泄和动力组裂漏导致柴油机费水的的原因。制定了有效措施，逐步消除了柴油机费水这一问题。     

利用甘蔗糖蜜与乳清粉厌氧发酵制备丁二酸

考察了甘蔗糖蜜替代昂贵葡萄糖作为碳源、乳清粉替代大部分酵母粉作为氮源时,对Actinobacillus succinogenes NJ113发酵制备丁二酸的影响。血清瓶厌氧发酵结果证明：对照组（葡萄糖40 g/L）的丁二酸产量仅为26.04 g/L,而以糖蜜为碳源（以总还原糖计算为40 g/L）时,丁二酸产量达到28.27 g/L,比对照组提高了8.57%。在此基础上,以糖蜜为碳源、不同比例的乳清粉和酵母粉为混合氮源发酵制备丁二酸,确定了糖蜜、乳清粉和酵母粉混合使用的最佳浓度分别为40 g/L、8 g/L和2 g/L。此外,在3 L发酵罐体系中添加40 g/L糖蜜、8 g/L乳清粉、2 g/L酵母粉进行发酵试验,实验结果证明：丁二酸终产量达到32.54 g/L,收率达到81.13%。     

Analysis of SO2 oxidation in non-isothermal catalyst pellets using the dusty-gas model

Analysis of the experimental rate data [13] for SO₂ oxidation on a commercial V₂O₅ catalyst has yielded a model that describes the experimental data well while the rate constant follows the Arrhenius law. This model was subsequently used to adequately predict experimentally determined effectiveness factors using the dusty-gas model flux relations and a single value for the tortuosity factor. The latter analysis validates the excellent properties of the dusty-gas model to properly describe transport in complex systems.     

Bed expansion in high velocity fluidization

Bed expansion of fine powders was investigated in two high aspect ratio fluid beds, an expanded top bed and a circulating system. The range of gas velocities (0.07 – 8 m/s) spanned the bubbling/slugging, turbulent, fast, and dense conveying fluidization regimes. The two-phase theory was shown generally not to apply in the slugging and the higher velocity fluidization regimes. A modified Richardson-Zaki approach, using an ‘effective’ cluster terminal velocity, was shown to adequately describe bed expansion. Changes in slope of the expansion curve were associated with regime changes, and can prove useful for the analysis of large diameter fluid beds. The effect of particle size distribution was shown to be considerable.     

Further development of the uniqueness criteria of the steady state via the contraction mapping principle

Uniqueness criteria of the steady state in porous catalysts are derived by using the contraction mapping principle with different norms. Among the norms considered, the one involving the gradient of the steady state yields the strongest result. The criteria developed in the present study bear some resemblance to those developed by other methods