科创中国

消防车自动行驶中的排档控制装置,其总体结构是采用内置式组合气缸,安装在气动滑台上且组合了推板和导杆,组成了一套消防车排档气动集成控制装置,可在消防车的换档箱附近狭小空间安装,完成切档、挂档、脱开的动作.应用气动控制使装置体积小、调试方便、定位准确、免维护,其中采用的单电控电磁阀能做到在汽车意外断电时气动滑台和组合气缸能安全复位.

建立了某型步兵战车行驶动力学仿真模型并基于实车行驶试验建立支持向量机响应面对仿真模型进行了修正.根据仿真路面与约束关系对步兵战车行驶动力学模型进行了仿真计算;提取典型节点行驶过程中的垂向加速度功率谱密度相似度作为目标函数,引入支持向量机响应面作为修正算法,修正了步兵战车悬挂与座圈刚度-阻尼系数.修正结果表明基于支持向量机响应面的模型修正方法大幅提高了车体动力学模型精度,更准确的反映了步兵战车行驶过程中的机构动态特性.

跑偏是履带推土机常见的故障现象.分析了其跑偏方式及原因,设计了一种履带式全液压推土机行驶实时纠偏控制系统.该系统采用三维数字罗盘姿态传感器,信息送至控制器处理后得到推土机的偏转方向及偏转量数值,通过数字液压缸控制变量马达的排量,进而改变变量马达转速实现纠偏,克服了现有推土机行驶纠偏装置的缺点.

高精度、高速度、大前瞻的路径采集系统能为智能车提高更精准、更及时和更丰富的赛道信息,是智能车获取更大速度的关键.针对激光传感器的路径采集模块,设计了一种路径识别算法,经过实验,该算法可以使智能车准确、及时地获取赛道信息,提升了智能车的速度和稳定性.

总部位于日本的SIM-Drive公司推出一项电动汽车电机技术,将如今大规模生产的电动汽车的可行驶里程提高30%,这一突破性的成就部分归功于杜邦以科技为本的材料创新和合作.

Recently-developed capabilities for tracking the movements of individual birds over the course of a year or longer has provided increasing evidence for consistent individual differences in migration schedules and destinations. This raises questions about the relative importance of individual consistency versus flexibility in the evolution of migration strategies, and has implications for the ability of populations to respond to climatic change. Using geolocators, we tracked the migrations of Scopoli's shearwaters Calonectris diomedea breeding in Linosa (Italy) across three years, and analysed timing and spatial aspects of their movements. Birds showed remarkable variation in their main wintering destination along the western coast of Africa. We found significant individual consistency in the total distance traveled, time spent in transit, and time that individuals spent in the win- tering areas. We found extensive sex differences in scheduling, duration, distances and destinations of migratory journeys. We also found sex differences in the degree of individual consistency in aspects of migration behaviour. Despite strong evidence for individual consistency, which indicates that migration journeys from the same bird tended to be more similar than those of dif- ferent birds, there remained substantial intra-individual variation between years. Indeed, we also found clear annual differences in departure dates, return dates, wintering period, the total distance traveled and re~rn routes from wintering grounds back to the colony. These findings show that this population flexibly shifts migration schedules as well as routes between years in response to direct or indirect effects of heterogeneity in the environment, while maintaining consistent individual migration strategies [Current Zoology 60 (5): 631-641, 2014].

随着超微病理技术的快速发展,超薄切片自动染色机已逐步取代传统超薄切片的双面染色手工工艺.大庆油田总医院病理科自2003年开始使用超薄切片自动染色机,不仅加快了实验进程,而且规范了染色结果,现介绍如下.1材料与方法1.1仪器和设备Leica EM STAIN超薄切片自动染色机(德国徕卡公司)、铜网装载框架、硅胶板、6个玻璃瓶(分别是装废液、废弃的醋酸双氧铀、废弃的柠檬酸铅、3%硝酸溶液、蒸馏水、3%硝酸溶液扩展瓶).1.2试剂0.5%醋酸双氧铀(染液1)、3%柠檬酸铅(染液2)、3%硝酸溶液、蒸馏水.

随着病理技术的快速发展,对病理HE制片的要求也精益求精.Roche Symphony全自动高清晰单独滴染式HE染色平台对批量HE切片制作具有单独滴染式功能,染色效果拥有稳定性和一致性.通过长时间摸索和总结,现将本科室使用该机器的经验体会介绍如下.

介绍了烧结生产自动配料控制系统的组成及工作原理.控制系统采用上下两级的计算机控制形式,并在系统的设计中,根据生产的实际情况采用了新的控制思想和控制方法.

汽车行驶记录仪是对车辆行驶速度、时间、里程以及车辆行驶等相关状态信息进行记录、存储并可与其他设备进行通信的数字式电子记录装置。本文基于高效软硬件来构建能够满足更实用需求的汽车行驶记录仪。系统主控采用低功耗、高性能且集成ARM Cortex-M3内核的32位微处理器,其片上资源十分丰富、外围接口电路简单可靠,同时搭配主流外围电路模块,包括展现良好人机交互界面的 T FT 真彩触摸显示屏、GPS定位模块、测量行驶车速的传感器等;软件编程使用丰富的软件函数库以及能够高效管理多任务且免费开源的实时操作系统(RTOS)CooCox CoOS 。