硬矢面 的英文怎麼說
中文拼音 [yìngshǐmiàn]
硬矢面
英文
hard vector surface-
And more aperture extension is achieved in this novel esprit - based two - dimensional angle estimatio n scheme using a uniform rectangular array of vector hydrophones spaced much farther apart than a half - wavelength. this proposed scheme and the attendant vector - hydrophone array outperform a uniform half - wavelength spaced pressure hydrophone array with the same aperture and slightly greater number of component hydrophones by an order of magnitude in estimation standard deviation
結合實際的應用情況，對矢量水聽器構成的陣列進行了初步的探討，利用本文前面部分所分析的基於單矢量水聽器的方法，實現了陣元間距突破半波長上限的局限，並解決了角度估計的循環模糊問題，以較小的硬體代價和運算代價實現陣列孔徑的擴展，提高估計精度。Firstly, based on conventional vq, a fast algorithm named equal - sum block - extending nearest neighbor search ( ebnns ) is presented, which not only can achieve the reconstructed image of full search algorithm but also can greatly reduce both the codeword search ratio and chip area. in order to improve coding efficiency, a new algorithm called correlation - inheritance coding is proposed, which is embedded in conventional vq system to improve compression ratio by re - encoding the indexes
首先，在普通矢量量化基礎上提出了等和值塊擴展最近鄰快速碼字搜索演算法（ ebnns ） ，該演算法在圖像畫質達到窮盡搜索演算法的前提下，大大降低了碼字搜索率和硬體實現面積；為了提高編碼效率，在相關性編碼方面，提出了相關繼承編碼演算法，對普通矢量量化后的編碼索引進行無損重編碼。Secondly, to achieve the independent regulation of active and reactive power output from the generator side which is designed for the purpose of tracing the maximum wind - energy capturing. the paper has analyzed the mathematic model of the ac excited doubly - fed machine and the stator field orientation control strategy of the motor as vscf wind power generator. thirdly, it has put forward and designed the dual pwm converter with the capacity of energy flowing bidirectional aimed at the demand of rotor energy bidirectional flow. the author constructed reliable and integrated experimental system and did a series of experimental study including no - load, cutting - in network and power generation at, below and above the synchronous speed
論文首先分析了風機運行特性及其最佳風能利用原理，通過模擬及實驗驗證了採用直流電機的輸出特性模擬風力機的最大輸出功率曲線的可行性，並給出了模擬系統的硬體結構；然後為了實現交流勵磁發電機有功、無功功率獨立調節機理，分析了交流勵磁雙饋發電機的數學模型和在追蹤最大風能捕獲變速恆頻風力發電時必需的定子磁鏈定向矢量控制策略；針對雙饋發電機轉子能量雙向流動的要求，提出並設計了具有能量雙向流動能力的雙pwm交流勵磁用變頻器；最後為實現從理論到實踐的全面研究，研製出了一套小功率完整的雙pwm變頻器交流勵磁的雙饋風力發電機實驗系統，進行了空載、並網、同步速及上、下的發電運行等一系列的運行實驗；所完成的模擬和實驗研究均驗證了理論、模型和控制策略的正確性、可行性。The task in the paper comprises two parts. the software design procedure works as follow, program the drivers for module on pc with cvi, generate the corresponding ddl and then edit the test serial and invoke the ddl by designing soft panel with vc + + 6. 0. thus facilitate users to control module to conduct high speed data test. the hardware design procedure works as follow, design vxi message based interface circuit and plesio - fdc circuit with fast data transport function on xc2vp30, a virtex - ii pro series fpga chip designed by xilinx company which integrates power - pc processor
筆者負責的工作包括軟體設計和硬體設計兩部分:軟體設計是用cvi工具編寫模塊在pc機上的驅動程序，生成動態連接庫，再用visualc + + 6 . 0設計軟面板，實現測試矢量的編輯和動態連接庫的調用，讓用戶很方便地控制模塊進行高速數據測試;硬體設計是在xilinx公司的一片集成了power - pc處理器的virtex - iipro系列fpga晶元xc2vp30上完成vxi總線的消息基介面電路設計和具有快速數據傳送功能的準fdc電路[ 1 ] [ 2 ]設計。Secondly, the main stuctures of the software and hardware parts of the control system are introduced. principles and realization of the main functional blocks of these two parts are illuminated. on the hardware of the system, parts of control circuit and the design and debugging of peripheral circuits are discussed thoroughly. based on the hardware circuit, the software is programmed with assembly language. dual close loop vector control weth feedback of speed and current are realized. the flow charts of main programme and pwm interrupt service routines are given. the important control strategies of vector control pmsm such as current sensint and scaling, speed sensing and scaling, bector co - ordinate transformation, generation of sine and cosine, pi regulators, svpwm vector modulation and so on are all accomplished in the pwm interrupt sevice routines. in order to unite all the variables in the programme, scaling is used
硬體方面主要論述了控制電路各部分及外圍輔助電路的設計和調試。在硬體的基礎上，軟體採用匯編語言編程，實現了轉速和電流雙閉環矢量控制。給出了系統主程序和pwm下溢中斷處理程序流程圖， pmsm矢量控制的主要控制策略如電流采樣與定標、速度采樣與定標、矢量坐標變換、 sin和cos值生成、 pi調節、 svpwm波形生成等都是在pwm下溢中斷服務子程序中完成的。Based on a comprehensive research of image coding algorithm for correlation vq, novel algorithms are presented on two aspects in this paper, and corresponding vlsi coding circuit system is designed, simulated and verified
本論文在對相關矢量量化圖像編碼演算法進行深入分析的基礎上，在兩個方面提出了基於vlsi技術的新演算法，並進行了vlsi硬體設計、模擬模擬和時序驗證。The paper conducts a thorough research of the method and principles in vna measurement, and performs detailed requirement analysis of system software relying on the hardware architecture. based on the requirement analysis, a detailed layered design is put forward, which partitioned the system software as three parts : user interface, data processing, hardware interface along with pci communication
論文首先詳細研究了矢量網路分析儀的測量方法和測量原理，然後基於硬體構架對系統軟體進行了詳細的需求分析，在需求分析的基礎上進行了總體結構設計以及詳細的分層設計，把系統軟體的組成劃分為用戶控制界面、數據處理、硬體介面與pci通信三個部分。分享友人