共查询到20条相似文献,搜索用时 250 毫秒
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本文综述实时控制软件的特点,开发技术语言形式和通用控制软件包,并且介绍了软件开发自动化和专家系统在实时控制软件中的应用。 相似文献
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《机器人技术与应用》1997,(5):25-25
日本东京大学工业科学研究所的T.Ura教授和他的研究小组研制了一种称作“双汉堡包”的自主式水下机器人。该机器人不用操纵人员控制,能够根据自己的判断进行运动。 这是一种为开发自主式水下机器人的各种软件与硬件用的通用试验台,它由一台内装的计算机进行控制。机器人通过用附属的TV摄像机和超声波测距机判断周围的环境进行运动,它也可以使用视觉与音响通信设备。 在水下工作的机器人通常叫作自主式潜水器(AUV),美国和英国都在大力研究这种潜水器。日本已研制了6种型号的AUV,其中5种是用于探测工作的,但该机器人是第一个能执行需要进行复杂智能判断任务(包括固定作业)的AUV水下机器人。 相似文献
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本文主要设计并制作了自主水下机器人的外形机械硬件结构。利用AutoCAD、Pro/e等计算机辅助设计软件,结合流体动力学相关理论知识,并综合考虑水下机器人相关部件,诸如驱动电机、摄像头、红外传感器、电子罗盘等部件的使用对水下机器人外形、重量、大小等方面影响,对自主水下机器人的外形等硬件结构进行优化设计,最大限度地减小水下机器人在水中运行时的阻力,减少功耗,节省能源,从而达到延长水下机器人在水下连续工作的运行时间。 相似文献
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本文首次分析了机器人双手协调运动中的动态与控制误差,导出了误差矩阵方程,据此提出了补偿算法,实验验证了算法的有效性,由于本算法并不局限于某一特定类型的机器人,因而具有较普遍的意义。算法已应用于机器人双手协调运动的实时控制,文中并对误差引起的目标物体变形进行了讨论。 相似文献
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OSGi was designed with embedded systems in mind, its current support is insufficient for coping with one main characteristic of many embedded systems: real‐time performance. This article analyzes different key issues in providing OSGi with real‐time Java performance covering motivational issues, and different integration ways and challenges stemming from the integration. It also contributes a general framework for introducing real‐time performance in OSGi, which is called the real‐time for OSGi framework. The framework uses real‐time Java virtual machines and the real‐time specification for Java. The adoption of this framework allows cyber‐physical systems to experience real‐time Java performance in their applications. The framework introduces several integration levels for OSGi and real‐time specification for Java, and specific real‐time OSGi services. An empirical implementation was carried out using standard software, which was extended with the new defined services. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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Recent academic and industry reports confirm that web robots dominate the traffic seen by web servers across the Internet. Because web robots crawl in an unregulated fashion, they may threaten the privacy, function, performance, and security of web servers. There is therefore a growing need to be able to identify robot visitors automatically, in offline and in real time, to assess their impact and to potentially protect web servers from abusive bots. Yet contemporary detection approaches, which rely on syntactic log analysis, finding statistical variations between robot and human traffic, analytical learning techniques, or complex software modifications may not be realistic to implement or remain effective as the behavior of robots evolve over time. Instead, this paper presents a novel detection approach that relies on the differences in the resource request patterns of web robots and humans. It rationalizes why differences in resource request patterns are expected to remain intrinsic to robots and humans despite the continuous evolution of their traffic. The performance of the approach, adoptable for both offline and real time settings with a simple implementation, is demonstrated by playing back streams of actual web traffic with varying session lengths and proportions of robot requests. 相似文献
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现场总线网络中实时连接和实时通信的研究 总被引:3,自引:1,他引:3
赵海 《计算机研究与发展》1997,34(5):362-367
本文针对现场总线网络的实时应用特征,采用了LAN体系结构中的三层构造,重点研究了其LLC子层的FBCOS、FBCLS、优先分配、RTVC和预约等问题,解决了传统LAN所无法解决的实时连接问题,从而保证了其实时应用的可靠完成。 相似文献
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针对某公司四氧化三钴的生产过程,开发了基于OPC技术的实时监控系统。系统由OPC服务器、OPC客户端以及实时监控软件组成。在工业自动化系统中应用了OPC技术,简化了系统的结构,方便用户对数据的读取与管理,提高了监控系统的实时性和扩展性。 相似文献
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Roque Saltaren PazmiñoAuthor Vitae Cesar Alvarez ArochaAuthor Vitae 《Robotics and Autonomous Systems》2011,59(2):101-112
REMO I Robot is a novel application of a parallel structure as an underwater robot of 6 DoF. Compared to other underwater robots, navigation of REMO I Robot is performed by the capability of its parallel structure to modify its geometric structure (thruster and front ring) and to displace by itself. This kinematic property of the parallel platform allows vectorial formation of thrusting forces to take place. Remo I Robot has just one single thruster in its rear ring, therefore the vectorial navigation gives maneuverability, flexibility, and holonomic capabilities for its navigation and positioning. The latter is important for intervention and manipulation tasks. That is why it gives a solid alternative when compared to traditional submarine robots such as shown in the simulation results and experiments performed using a real prototype. In conclusion, this paper proposes a conceptual frame for the development of underwater parallel robots. Moreover, it also points out the experience acquired from the development of the underwater Remo I Robot. 相似文献
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VC++下对大量实时数据的采集处理 总被引:1,自引:0,他引:1
对工控软件来讲,大量实时数据的采集往往会影响用户界面消息的响应时间,导致系统性能的下降,如果采用多线程来处理数据的采集与用户界面的消息,则会很好地提高系统的性能。 相似文献