键盘命令解释程序(CLI)

3.1 键盘命令解释程序 键盘命令解释程序(Gommand Line Interpreter)是为通过TTY和RDOS对话设计的系统程序。由TTY敲入一串命令时CLI分析这些命令,向RDOS提供必要的信息。换言之,键盘命令解释程序是以电传打字机为中介的RDOS同用户之间的接口。此外,CLI还负责文件管理。在下述情况下系统处于空闲状态,CLI被调入内存: (1)初始准备后     

基于USB的加密视频客户端的设计与实现

针对USB无线视频实时接收装置的开发,论文介绍了在Windows视频客户端通过USB数据接口来接收数据,并且通过在Linux服务器端将采集的视频和音频数据加密,在客户端进行解密从而保证数据传输和存储安全性的设计方案.在客户端视频配置部分,特别定义了一个结构体和几种配置命令及类型来实现视频配置的功能.并且在本地播放部分设计了一个解密过滤器,来实现录制到硬盘上的文件的播放.此视频监控系统具有广阔的应用前景.     

命令行接口管理系统的研究与实现

基于网络设备中命令行接口（CLI）管理系统的组成和操作流程，介绍了命令树在CLI中的工作机制，提出了用动态命令树生成策略构造命令集，并定义了用来生成命令树的语法规则，从而缩短了CLI的开发时间，并提高了代码的可重用性，最后，结合现有路由器中CLI的特性，对该管理系统的性能优势作了深入分析。     

键盘命令解释程序(CLI)

第一节 CLI概况 1.CLI在RDOS中的地位 CLI是用户同RDOS的一个界面。 从程序结构来看,CLI处于RDOS的外层,构成RDOS的一个部分。虽然RDOS内部没有明显的层次结构,但它同CLI的关系则有鲜明的层次性。CLI可以而且需要调用RDOS(通过系统调用命令),而RDOS不需要也不可能调用CLI中的任何模块。     

CLI对用户命令的处理

输入(即由TTY敲入)CLI不认得的命令时,CLI仍编辑此命令行造出命令文件,然后执行文件。例如,敲入 FOO↙时,CLI编辑此命令行造命令文件COM.CM(由后台TTY敲命令时)或FCOM.CM(由前台TTY敲入时),然后执行FOO。COM.CM和FCOM.CM的文件结构相同。 用户在命令中还可加开关(整体、局部开关皆可)。CLI不解释指定的开关,但把它们置入命令文件中。这就提供了用户利用键盘命令向程序传送信息的又一种手段。 用户发命令FOO↙时CLI造出的命令文件如下:     

存储亦可动成长

HP StorageWorks ESL 系列企业磁带库解决方案为用户提供了自动、统一的磁带系统,通过基于图形界面的配置管理,解决了原有存储区域网(SAN)中磁带库配置与管理复杂的问题。 首先,它使用单一的浏览界面管理接口控制器和磁带库,通过共同的用户界面,实现了与企业管理的应用集成;其次,它实现了用于关键磁带库组件与存储区域网(SAN)相关的诊断功能,提高了整体系统的稳定性。 HP StorageWorks ESL E系列磁带库使连接SAN的ESL磁带库和驱动器更安全、可靠并更容易恢复。用户不但能够快速地将数据从磁盘移到磁带上,而且还可对ESL磁带库、驱动器和接口控制器进行随时随地管理、监控和配置,实现了更大的投资保护。 ——中国惠普网络存储产品部产品经理温洁女士     

嵌入式系统配置框架

小型嵌入式系统具有计算资源与存储资源有限、计算相对简单的特点,其中配置系统是嵌入式系统与用户之间的窗口;提出了一种嵌入式系统的配置框架,主要解决命令解析、配置存储和重启执行的问题,同时还对命令树的功能、工作机理做了详细的阐述.系统可运行在各种嵌入式平台上,具有资源占用少和命令扩充性良好的特点.     

路由器的管理

介绍了路由器管理的重点知识,包含不同用户权限的路由器的各种命令模式,路由器的名称、口令、接口IP地址等信息的配置命令。     

基于PCI9054的测试系统计算机接口的设计

测试系统中控制台与测试设备之间的信息交互主要是测试命令的下发和测试数据的回读,对数据通信的可靠性和实时性要求较高;文章针对测试系统控制台稳定的命令下发和高速读数需求,基于PCI总线桥接芯片PCI9054的C模式,设计了命令从方式接口和数据DMA接口;接口的设计包括PCI9054内部寄存器的配置、驱动程序的编写以及应用程序接口的设计;最后介绍了接口的使用并进行测试,使用DMA接口读取批量数据,平均速度为58.15 MB/s.     

Xlight FTP服务器ODBC接口研究与应用

Xlight Ftp Server是目前效率高,体积小的FTP服务器软件,配置信息分为文件存储方式,数据库存储方式。当FTP服务器用户和要求较多时,文件存储方式的添加用户和配置虚拟目录等操作为大量的重复工作,相当费时费力。而对于数据库存储方式,由于只提供ODBC接口,无对数据库进行操作的界面。本文重点研究利用ODBC接口开发对应管理系统,实现xlight FTP服务器的用户管理、配置信息管理,日志统计分析等功能。     

基于DSP的智能语音控制系统设计

利用语音命令实现与智能设备的交互已经成为现代控制理论研究的热门话题之一。介绍了一种基于数字信号处理器(DSP)、语音采集模块、无线收发模块、片上外设等资源实现的语音命令控制处理系统。该系统首先通过语音采集模块采集到语音控制信号;然后通过DSP和相应的片上外设实现对语音命令的识别;最后将识别的语音命令传递给无线收发模块以实现对于智能设备的控制。整个系统的设计应用领域广泛,可以为人机交互提供一种切实可行的参考方案。     

Robot motion command simplification and scaling

It has been observed that human limb motions are not very accurate, leading to the hypothesis that the human motor control system may have simplified motion commands at the expense of motion accuracy. Inspired by this hypothesis, we propose learning schemes that trade motion accuracy for motion command simplification. When the original complex motion commands capable of tracking motion accurately are reduced to simple forms, the simplified motion commands can then be stored and manipulated by using learning mechanisms with simple structures and scanty memory resources, and they can be executed quickly and smoothly. We also propose learning schemes that can perform motion command scaling, so that simplified motion commands can be provided for a number of similar motions of different movement distances and velocities without recalculating system dynamics. Simulations based on human motions are reported that demonstrate the effectiveness of the proposed learning schemes in implementing this accuracy-simplification tradeoff.     

控制系统CAD软件包的设计——CSCAD的总体设计

本文提出一个CSCAD(Control System Computer Aided Design)软件包四级分块树状总体结构和管理命令的形式。叙述了CSCAD的命令系统和程序设计。这种结构和命令形式功能较强,便于用户依需要决定取舍和扩展。在计算机系统上实现也较为简单。同时便于移植。     

Speech recognition for command entry in multimodal interaction

Two experiments investigated the cognitive efficiency of using speech recognition in combination with the mouse and keyboard for a range of word processing tasks. The first experiment examined the potential of this multimodal combination to increase performance by engaging concurrent multiple resources. Speech and mouse responses were compared when using menu and direct (toolbar icon) commands, making for a fairer comparison than in previous research which has been biased against the mouse. Only a limited basis for concurrent resource use was found, with speech leading to poorer task performance with both command types. Task completion times were faster with direct commands for both speech and mouse responses, and direct commands were preferred. In the second experiment, participants were free to choose command type, and nearly always chose to use direct commands with both response modes. Speech performance was again worse than mouse, except for tasks which involved a large amount of hand and eye movement, or where direct speech wasused but mouse commands were made via menus. In both experiments recognition errors were low, and although they had some detrimental effect on speech use, problems in combining speech and manual modes were highlighted. Potential verbal interference effects when using speech are discussed.     

A Smooth Wave‐Form Shaped Command with Flexible Maneuvering Time: Analysis and Experiments

Shaped commands are used to eliminate residual oscillations of crane payloads. Command jerks are detrimental to the safe and efficient operation of cranes. Smooth shaped commands are recommended to avoid such jerks in motion commands to crane motors. The amplitude of the shaped command is governed by its time length. The time length of the shaped command is highly dependent on the natural period of oscillation of the payload. A flexible time length of the shaped command introduces flexibility in selecting the desired command amplitude that would lead to a reduced stress on the crane actuators. In this work, a smooth wave‐form acceleration command is proposed to eliminate residual oscillations in rest‐to‐rest maneuvers of cranes. The proposed shaped command is derived analytically. The system performance is simulated numerically and validated experimentally on a scaled model of an overhead crane. The proposed wave‐form is further modified to relax the dependence of the profile on the natural period of oscillation of the payload.     

ARINC661显控指令快速验证方法

针对ARINC661座舱显示系统中显示控制单元在开发阶段验证指令困难的问题,设计了一种解决方法.该方法不需要搭建联试环境,仅在控制指令开发的计算机上即可完成验证.该设计充分利用ARINC661通用内核进行扩展,在通用内核DF加载、指令解析、人机交互、画面渲染等基本功能的基础上,增加显示设备、虚拟UA的管理功能,既保证了辅助组件与实际显示画面的一致性,又能方便地模拟各种机载显示设备.该设计用直观的显示结果来验证控制指令的正确性,使设计人员能够方便快速地测试已开发指令的正确性,从而缩短试验周期,具有良好的适用性、扩展性和可靠性.     

支持边缘端—云端协同工作的群组命令传输算法

Internet是连接云端与分布在不同区域边缘端的重要传输载体,其尽力而为的服务模式在支持群组控制命令传输时,会造成快速消耗网络资源及路径竞争等问题。首先,把Internet群组控制命令传输问题转换为不相交带约束的多Steiner树问题(constrainted multi-Steiner trees with disjoint problem,CMSTDP),并提出一种改进型遗传算法。该算法聚焦于提升全局搜索能力和缓解路径竞争两个方面。实验从群组命令传输成功率、收敛延时比及解误差率三个方面验证,该算法适合应用于边缘端—云端之间的群组命令传输。     

Posture control of robot manipulators with fuzzy voice commands using a fuzzy coach–player system

This paper presents a method of controlling robot manipulators with fuzzy voice commands. Recently, there has been some research on controlling robots using information-rich fuzzy voice commands such as 'go little slowly' and learning from such commands. However, the scope of all those works was limited to basic fuzzy voice motion commands. In this paper, we introduce a method of controlling the posture of a manipulator using complex fuzzy voice commands. A complex fuzzy voice command is composed of a set of fuzzy voice joint commands. Complex fuzzy voice commands can be used for complicated maneuvering of a manipulator, while fuzzy voice joint commands affect only a single joint. Once joint commands are learned, any complex command can be learned as a combination of some or all of them, so that, using the learned complex commands, a human user can control the manipulator in a complicated manner with natural language commands. Learning of complex commands is discussed in the framework of fuzzy coach–player model. The proposed idea is demonstrated with a PA-10 redundant manipulator.     

Success rates in a multimodal command language for home robot users

This article considers the success rates in a multimodal command language for home robot users. In the command language, the user specifies action types and action parameter values to direct robots in multiple modes such as speech, touch, and gesture. The success rates of commands in the language can be estimated by user evaluations in several ways. This article presents some user evaluation methods, as well as results from recent studies on command success rates. The results show that the language enables users without much training to command home robots at success rates as high as 88%–100%. It is also shown that multimodal commands combining speech and button-press actions included fewer words and were significantly more successful than single-modal spoken commands.