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显示控制群中的虚拟设备集和设备自组织方法 总被引:1,自引:1,他引:0
王苏滨 《中国电子科学研究院学报》2010,5(3):275-281
显示控制系统是控制中心设备的集成系统,它实现控制中心的自动控制。借用数学中群论的一些方法和结果,提出了虚拟设备集及其运算,定义了作为代数系统的显示控制群和子群,讨论了相应的控制系统和虚拟设备的实现。提出了用于显示控制群中设备自组织的逻辑推理方法和演化硬件方法。显示控制群的控制系统能自动组织和控制设备进行用户需要的工作,也就是构成了一个显示控制子群,而最大的子群就是显示控制群自身。逻辑推理方法和演化硬件方法增加了显示控制群的适应性和生存性,可用于分布式控制中心和大规模自动控制系统建设。 相似文献
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介绍了一种利用手机实现可视化远程家电控制的系统和方法.系统分为服务器、家庭控制中心设备和手机三个部分,它们之间通过TCP/IP连接.在传统家电控制技术的基础上,将视频技术引入手机远程控制过程.用户可以在手机屏幕上对看到的设备对象进行自由的操控,操控结果可见. 相似文献
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《激光与红外》1985,(10)
用于机载侦察的两种小型红外系统可用于各种类型的高速、低空飞行飞机和无人驾驶飞机上。通过这两个系统,可在驾驶舱内观察实时红外图象,通过安全数据链将图象传递到地面站,或用磁带机记录下来用于以后分析。其中一种系统称为行扫描4000,是为Tornado飞机设计的,适用于高速飞行飞机。另一种为行扫描2000,设计用于无人驾驶飞机和低速飞机。休斯公司是根据与英国航空动力集团的协议提供这些系统的。(朱雁摘自AW&ST,Apr.8,1985,p.54)激光微调机美国电力科学工业公司的400型激光微调机,是为满足激光微调厚膜电阻的生产需要设计的。4000型激光微调机的特点在于改进了高速光束偏转系统、3573型高峰值功率Nd:YAG激光器和自校准测量系 相似文献
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百屏群显电子信息发布系统 总被引:1,自引:0,他引:1
百屏群显电子信息发布系统□马玉江姚仁修张东魁(济南电视台广告部250014)1百屏群显系统百屏群显系统是一种城市户外电子信息发布媒体。该系统由显示屏和控制中心两大部分组成。显示屏群是分布于市区繁华地段的几十块(或更多)超高亮度LED显示屏,控制中心的... 相似文献
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Inte1820芯片组是让PentiumⅡ和PentiumⅢ处理器运行在100/1 33MHz下得到最佳性能的理想选择.它包含三个主要的部分,内存控制中心{Memory Con-troller Hub(MCH)},输入输出控制中心{I/O Control-ler Hub(ICH)}和固件中心{Firm ware Hub(FWH)}.Inte1820利用MCH代替Inte1810的显示和存储控制中心{GMCH(Graphicsand Memory Controller Hub)},但也继续沿用ICH作为其I/O控制器,和FWH配合来适应未来的适应安全和易管理性的PC的基础平台.与Inte1810相比较,Inte1820去掉了集成的显示控制芯片,支持AGP2.0规范,并且特别发展了对RDRAM(Rambus DRAM)存储器的支持.RDRAM是一种内存新技术的名称,它能运行在比S D R A M(Synchronous DRAM)更高的令人注目的频率上. 相似文献
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为了缓解城市交通拥堵问题,提出一种基于FPGA平台远程网络控制的城市交通控制系统设计。系统采用TCP/IP传输协议实现控制中心发送控制信息给交通系统。控制中心采用Qt图形化界面实现,清楚直观;交通系统依据控制信息选择相应配时方案进行显示。经测试,该系统工作稳定、控制精确、可靠性高,且成本较低。 相似文献
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论述了基于ZigBee无线通讯的智能家居控制系统设计,以Android手机为控制中心,ZigBee无线通讯为桥梁,实现一种星型的ZigBee网络在智能家居中的应用。该系统以TI公司的CC2530单片机为主控,通过ZigBee自组网,终端设备将采集到的数据通过Z-stack协议栈,发送到ZigBee协调器,通过串口将数据发送到电脑及手机上并显示出来,实现了对设备的集中管理与控制。测试结果表明,ZigBee组网成功,终端节点能轻易地检测到各子模块连接的传感器信号,并可通过手机控制节点信号。 相似文献
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《Mechatronics》2022
Compared with the unmanned aerial vehicle (UAV), the aerial manipulator extends the ability to interact with the environment by using the onboard manipulator. The complex dynamic characteristics of the combined system increase the challenges of accurately control the aerial manipulator to approximate the target object. In this paper, an onboard-eye-to-hand visual servo and task coordination control strategy is proposed for the aerial manipulator to enhance the accurate manipulation and flight stability. By establishing a new spherical coordinate error equation, the flying platform (quadrotor) and onboard manipulator can be controlled simultaneously. Meanwhile, the multi-task coordinated control scheme is adopted to achieve precise positioning and grasping of the target object, including estimating the object pose, dynamically compensating the change of the center of gravity of the aerial manipulator, and avoiding the onboard manipulator joint limitations. The stability of the closed-loop system is analyzed by the Lyapunov method. Finally, the feasibility of the proposed visual servo method is verified in simulations and real-world outdoor experiments, respectively. The strengths of the proposed method are demonstrated by comparing it with the conventional visual servo method. 相似文献
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四旋翼无人机是一个具有多变量、强耦合、强非线性特性的欠驱动非稳定被控对象,快速准确地进行故障诊断对实现无人机安全飞行具有重要意义。基于Newton-Euler运动定理建立四旋翼无人机动力学方程,针对四旋翼无人机执行器故障基于反步法、Lyapunov理论结合自适应技术推导出自适应律,反解出滚转角、俯仰角的期望值,从而进行在线故障估计,取代用于故障重构的观测器,较好地实现执行器容错控制。通过仿真实验验证了本文所提的反步自适应容错控制方法的有效性。 相似文献
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Focusing on the polar extreme environment, a composite control method is proposed to finish the polar scientific research task in this paper. Based on the vector field and the linear quadratic regulator (LQR) control method, the small unmanned aerial vehicle can realize precise trajectory following control under wind disturbance. Through vector filed method, system constructs the corresponding vector fields for the planed research trajectory, generates the desired course inputs for the small aerial vehicle. Furthermore, the LQR control method is proposed and utilized as the inner control loop to realize the precise attitude control. Lyapunov stability arguments are used to demonstrate the asymptotic decay of trajectory following errors in the presence of wind disturbances. Experimental flight results are given to show that the small unmanned aerial vehicle can get the high trajectory following performance in the polar environment. 相似文献
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Jongchul Jung Taehyun Shim Gertsch J. 《Vehicular Technology, IEEE Transactions on》2009,58(8):4078-4087
In the development of active-passive roll control systems, a vehicle model that can represent realistic roll behavior is essential for predicting the impending rollover and for accurately applying the control force to avoid vehicle rollover. The vehicle roll center is a key parameter that influences the vehicle roll dynamics. Since the roll center movement becomes important as the vehicle roll angle increases, it is desirable to include this effect in the roll control system. This paper proposes a dynamic roll stability indicator (RSI) incorporating roll center movement that generates rollover threshold in terms of lateral acceleration. A robust parameter identification algorithm using a disturbance observer is designed to estimate the lateral and vertical roll center movements. These estimates are later used in the RSI to update the rollover threshold. The effectiveness of the proposed method is demonstrated through simulations, and its performance is compared with other rollover warning algorithms. 相似文献
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Reza Tarighi Kamran Farajzadeh Hooman Hematkhah 《International Journal of Communication Systems》2020,33(7)
Since unmanned aerial vehicles (UAVs) have been introduced as mobile nodes for data gathering, wireless sensor networks (WSNs) have progressed considerably. The resulting WSN‐UAV systems are employed for emergency applications and also for remote monitoring purposes. WSN‐UAV systems yield an optimum data gathering method using the WSN. In the proposed method, the nodes' data are transferred using a remotely operated vehicle (drone) rather than the conventional data transferring methods like the direct and hop‐to‐hop data transmission approaches. Then, the gathered data are delivered in the pre‐determined destination point. WSN‐UAV systems, in fact, are a special case of the systems with the mobile sink in which the sink path is previously specified and controlled. In this paper, the effects of clustering parameters on the WSNs are studied; then, the network's lifetime is prolonged by applying some parameters. In addition, the network's performance is enhanced to some extent by assigning some changes in the media access control (MAC) layer. Also, the effect of drone's path pattern on the lifetime of the network is studied. 相似文献
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由于单无人机执行任务量有限、整体效率低,故而无人机集群运动以其稳定性好,执行任务多样性,易操作,易控制等特点受到越来越多的关注。在激光供能无人机集群中,针对无人机的机载能量限制了任务的范围和时长、传统供能方式仅能完成一对一供能导致供能效率较低等问题,本文提出了一种基于光学相控阵技术的新型激光多波束供能系统,包括整体的激光无线能量传输方案、系统工作的整体流程、基于领航跟随法的无人机集群编队控制等,此方案可完成一对多的自调节供能,满足整个无人机集群的能量需求,提高传能距离及传输效率,并通过对无人机集群进行算法控制精准到达预设供能区域。对未来激光无线能量传输应用的领域和方式具有参考价值。 相似文献
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任务分配方法是任务控制过程的重要组成部分,是协同作战指挥决策的关键。本文在多无人机协同任务分配的基础上,分析了有人/无人机编队协同作战的突出特点,着重研究飞行员工作状态对参与任务分配的各无人机作战效能的影响,建立了基于飞行时间和工作负载的飞行员工作状态评价模型,并对传统无人机作战效能函数的数学模型进行改进,提出了有人机飞行员工作状态影响下的无人机效能评估模型。针对有人/无人机混合编队协同作战想定,进行了仿真计算。仿真结果表明:飞行员工作状态会对无人机的任务效能和编队的任务分配结果产生显著影响, 同时说明在有人/无人机混合编队的效能评估和任务分配过程中,飞行员的工作状态影响是不可忽略的因素。 相似文献