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上傳時間: 2017-06-08
上傳用戶:2543998503
obot control, a subject aimed at making robots behave as desired, has been extensively developed for more than two decades. Among many books being published on this subject, a common feature is to treat a robot as a single system that is to be controlled by a variety of control algorithms depending on different scenarios and control objectives. However, when a robot becomes more complex and its degrees of freedom of motion increase substantially, the needed control computation can easily go beyond the scope a modern computer can handle within a pre-specified sampling period. A solution is to base the control on subsystem dynamics.
標簽: decomposition virtual control
上傳時間: 2019-09-04
上傳用戶:txb96
For nearly a hundred years telecommunications provided mainly voice services and very low speed data (telegraph and telex). With the advent of the Internet, several data services became mainstream in telecommunications; to the point that voice is becoming an accessory to IP-centric data networks. Today, high-speed data services are already part of our daily lives at work and at home (web surfing, e-mail, virtual private networks, VoIP, virtual meetings, chats...). The demand for high-speed data services will grow even more with the increasing number of people telecommuting.
上傳時間: 2020-05-27
上傳用戶:shancjb
If you would like to follow along with some of the steps outlined in this book, we recommend that you deploy Live Communications Server 2005 SP1 on a physical or virtual server running Microsoft Windows Server 2003. To run Communicator 2005, you will need a physical or virtual PC running Windows XP or Windows Server 2003. To fully test Microsoft Office integration with Communicator 2005, you need to be running Microsoft Office 2003 with Service Pack 2.
標簽: Communications Professional Server Live
上傳時間: 2020-05-31
上傳用戶:shancjb
Human Factors and Systems Interaction aims to address the main issues of concern within systems interface with a particular emphasis on the system lifecycle development and implementation of interfaces and the general implications of virtual, augmented and mixed reality with respect to human and technology interaction. Human Factors and Systems Interaction is, in the first instance, affected by the forces shaping the nature offuture computing and systems development
標簽: Interactions Advances Factors System Human and in
上傳時間: 2020-06-10
上傳用戶:shancjb
可編程廳邏輯控制器(簡稱PLC ),是隨著技術的進步 與現代社會生產方式的轉變,為適應多品種、小批量生產的需要,而產生、發展起來的一種新型的工業自動化控制裝置。PLC 從1969年問世以來,由于其具有通用靈活的控制性能、可以適應各種工業環境的可靠性、簡單方便的使用性能,在I業自動化各領域取得了廣泛的應用。有人將它與數控技術、CAD/CAM技術、工業機器人技術并稱為現代工業自動化技術的四大支柱。為了滿足廣大工程技術人員的需要,便于讀者全面、系統、深入地掌握PLC應用技術,本書以PLC的工程應用為目的,以蒙FX/O系列PLC為對象,按照實際PLC控制系統工程設計的要求。分為基礎篇"、。設計篇"、“編程篇"、"功能篇"、"通信篇"、"網絡篇”、"維修篇 7篇內容,全面系統地介紹了三菱FX系列(包括FXis/FXIN/FX1NC、FX2N/FX2NC、 FX3u/FX3uc) 、O系列PLC的性能以及在各種不間同場合使用時的硬件設計、程序設計、功能調試的基本方法與步驟。“基礎篇"介紹了PLC的基本概念、組成、工作原理、編程語言等方面的基礎知識。在此基礎上,分別對FX/O全系列PLC的基本結構、特點、性能參數、安裝與連接要求等方面的內容作了系統、詳細的闡述,可以供PLC控制系統的模塊選型、硬件設計、 安裝調試、維修服務等參考。"設計篇按實際PLC控制系統I程設計的要求,重點敘述了PLC控制系統在總體設計、系統規劃、主回路與控制設計、I/0 連接設計、可靠性設計、安裝與連接設計、PLC 梯形圖設計、順序功能圖( SFC )設計等方面的具體方法、步驟與要點。本篇廣泛吸收了國外的先進標準、先進設計思想,并分析了某進口設備的實際PLC控制系統的設計特點,對各類電e氣設計人員、PLC控制系統I程設計人員有很大的實用參考價值。
上傳時間: 2021-12-19
上傳用戶:XuVshu
虛擬現實技術的國內外研究現狀與發展-許微虛擬現實技術的國內外研究現狀與發展 許 微 (中國地質大學(武漢) 信息工程學院 ,湖北 武漢 430074) 摘 要 :虛擬現實技術是一門新興邊緣的技術 ,研究內容涉及多個領域 ,應用十分廣泛 ,被公認為是 21 世紀重要的發 展學科以及影響人們生活的重要技術之一。從虛擬現實的概念出發 ,對虛擬現實技術的國內外研究現狀進行了充分論述 , 并展望了虛擬現實的發展趨勢。 關鍵詞 :虛擬現實 ;研究現況 ;發展趨勢 中圖分類號 : F061. 3 文獻標識碼 :A 文章編號 :167223198 (2009) 0220279202 1 虛擬現實 虛擬現實(Virtual Reality ,簡稱 VR) ,又譯為臨境 , 靈 境等。從應用上看它是一種綜合計算機圖形技術、多媒體 技術、人機交互技術、網絡技術、立體顯示技術及仿真技術 等多種科學技術綜合發展起來的計算機領域的最新技術 , 也是力學、數學、光學、機構運動學等各種學科的綜合應用。 這種計算機領域最新技術的特點在于以模仿的方式為用戶 創造一種虛擬的環境 ,通過視、聽、觸等感知行為使得用戶 產生一種沉浸于虛擬環境的感覺 ,并與虛擬環境相互作用 從而引起虛擬環境的實時變化。現在與虛擬現實有關的內 容已經擴大到與之相關的許多方面 ,如“人工現實”(Artifi2 cial Reality) 、“遙在”( Telepresence) 、“虛擬環境”( Virtual Environment) “、賽博空間”(Cyberspace) 等等。 2 國外虛擬現實技術研究現狀 計算機的發展提供了一種計算工具和分析工具 ,并因 此導致了許多解決問題的新方法的產生。虛擬現實技術的 產生與發展也同樣如此 ,概括的國內外虛擬現實技術 ,它主 要涉及到三個研究領域 :通過計算圖形方式建立實時的三 維視覺效果 ;建立對虛擬世界的觀察界面 ;使用虛擬現實技 術加強諸如科學計算技術等方面的應用。 2. 1 VR 技術在美國的研究現狀 美國是虛擬現實技術研究的發源地 ,虛擬現實技術可 以追溯到上世紀 40 年代。最初的研究應用主要集中在美 國軍方對飛行駕駛員與宇航員的模擬訓練。然而 , 隨著冷 戰后美國軍費的削減 ,這些技術逐步轉為民用. 目前美國在 該領域的基礎研究主要集中在感知、用戶界面、后臺軟件和 硬件四個方面。 上世紀 80 年代 ,美國宇航局 (NASA) 及美國國防部組 織了一系列有關虛擬現實技術的研究 ,并取得了令人矚目 的研究成果 ,美國宇航局 Ames 實驗室致力于一個叫“虛擬 行星探索”(VPE) 的實驗計劃。現 NASA 已經建立了航空、
標簽: 虛擬現實
上傳時間: 2022-03-17
上傳用戶:得之我幸78
設計了農業溫濕度智能控制系統,該系統采用DHT11溫濕度傳感器作為溫濕度采集模塊,單片機選用AT89C52代替并調用Virtual terminal模擬串口通信,LCD1604液晶顯示器實時顯示溫濕度,實現了溫濕度的測量、顯示,可自動控制加熱、降溫、加濕、通風,實現溫濕度控制以及超限報警處理,并利用Proteus與Keil進行實際電路的仿真。試驗表明,該系統實現了可靠的溫濕度監控。We described the design of an intelligent control system of agriculture temperature and humidity.The system uses DHT11 temperature and humidity sensor as the temperature and humidity acquisition module.The SCM adopts AT89C52 to replace and call the virtual terminal for simulating serial communication.LCD1604 displays temperature and humidity in real time,which implements the measurement and display of temperature and humidity.The system is able to automatically control heating,cooling,humidification and ventilation,to achieve temperature and humidity control and over-limit alarm processing.The system also uses Proteus and Keil for actual circuit simulation.The experiment shows that the system is capable of reliable temperature and humidity monitoring.
上傳時間: 2022-03-26
上傳用戶:aben
以單片機控制A/D轉換器TLC549為例,對A/D轉換器的主要技術指標進行了分析研究,在Proteus平臺下,完成了A/D轉換電路的構建,采用器件工作時序方式進行程序編寫,借助仿真圖表、虛擬儀器等工具對A/D轉換的數據進行測量并對失調誤差、增益誤差、微分非線性、積分非線性和轉換時間等重要參數進行了詳細分析。結果表明:使用Proteus軟件可對A/D轉換過程進行定性分析,將抽象的A/D轉換器技術指標直觀化、形象化展現出來,有助于學生更好地理解A/D轉換過程。The main technical indicators of A/D converter were analyzed and studied with an example from A/D converter TLC2543 which is controlled by using SCM.It was completed the construction of the A/D converter circuit under the Proteus software.The programming based on the operation sequence of the chip is put forward.With the aid of the simulation tools such as virtual instrument,simulation charts provided by Proteus,the important parameters of circuit such as offset error,gain error,differential nonlinearity(DNL),integral nonlinearity (INL) and conversion time are analyzed detailedly.Simulation results show that the A/D conversion process can be qualitatively analyzed and visualized the abstract indicators of A/D.The system can help students better to understand the SCM conversion process.
上傳時間: 2022-04-04
上傳用戶:
This manual documents the Microcontroller profile of version 7 of the ARM? Architecture, the ARMv7-M architecture profile. For short definitions of all the ARMv7 profiles see About the ARMv7 architecture, and architecture profiles on page A1-20.ARMv7 is documented as a set of architecture profiles. The profiles are defined as follows: ARMv7-A The application profile for systems supporting the ARM and Thumb instruction sets, and requiring virtual address support in the memory management model. ARMv7-R The realtime profile for systems supporting the ARM and Thumb instruction sets, and requiring physical address only support in the memory management model ARMv7-M The microcontroller profile for systems supporting only the Thumb instruction set, and where overall size and deterministic operation for an implementation are more important than absolute performance. While profiles were formally introduced with the ARMv7 development, the A-profile and R-profile have implicitly existed in earlier versions, associated with the Virtual Memory System Architecture (VMSA) and Protected Memory System Architecture (PMSA) respectively.
標簽: arm
上傳時間: 2022-06-02
上傳用戶: