系統單位 的英文怎麼說
中文拼音 [xìtǒngdānwèi]
系統單位
英文
system unit-
The results of this study support removing acorus from araceae as a singular family and as the basal and relative isolation of the monocotyledon. 2
據此認為菖蒲屬應從天南星科中分出並單獨成科；同時支持菖蒲屬位於單子葉植物基部較孤立的系統地位。Thirdly, it is possible that acorus is in an isolated, primitive position among the monocotyledon. the systematic position of acorus among the angiosperms deserves to be studied deeply
菖蒲屬可能是整個單子葉植物中一個較孤立的、原始的類群，它在整個被子植物中的系統地位，目前尚無定論，還有特深入探討。The key components in laser gyro is he - ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the lamb half classical theory, and on the base of density matrix theory, the optical brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter - propagating wave. on the basis of this equations, adopted the simulation software matlab and virtual instrument programming language labwindows / cvi, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock - in of frequency and the characteristic of light intensity and phasic of the counter - propagating wave in laser gyro
激光陀螺的核心部件為he - ne環形激光器，而掌握光與介質的相互作用理論是研究激光器的關鍵，採用拉姆半經典理論為主，在密度矩陣理論的基礎上，推導環形諧振腔中描述he - ne氣體增益介質原子運動的光學布洛赫方程，運用介質極化理論得出描述激光陀螺反向行波的光強、位相所滿足的自洽場方程組，在此基礎上，運用matlab模擬軟體和虛擬儀器編程語言labwindows / cvi ，對激光陀螺中的介質增益色散特性、頻率牽引效應、燒孔效應及模競爭、閉鎖效應及環激光的光強和相位特性進行模擬試驗研究，並且運用全量子理論，對激光工作原理進行分析，得出二能級系統單模輻射場的光子數密度分佈，得出激光場的光子統計分佈，模擬激光場的動態建立過程。Computer simulation of fundamental second - order system ' s response to unit step function based on matlab6
5的歸一化二階系統單位階躍響應的模擬演示It includes four criterions of locating fault point ? “ transient zero sequence current amplitude law ”, “ stable base wave zero sequence current phase law ”, “ stable seventh harmonic zero sequence current phase law ” and “ s injection law ”. pointing out how the law locate the fault point to minimal fault section by applying these criterions gradually. the law will not only make up the blemishes existing in current methods for single - phase fault location in small current grounding system, but also locate the fault point to minimal fault isolating unit on fault line
該方法通過將所包含的四個定位判據- 「暫態零序電流幅值法」 、 「穩態基波零序電流方向法」 、 「穩態7次諧波零序電流方向法」和「 s信號注入法」 -進行有選擇地遞進使用，不僅有效彌補了目前已有小電流接地系統單相接地故障選線的缺陷，更將故障定位在故障線路最小故障區段。This paper is focused on the operation of single - phase earthprotection for little earth current system. based on the analyses for several kinds of ground protections, one ground protection with the functions of line selection and ground positioning is proposed for the complex automatic and mordern management for the electric substation. by this means, the economic, reliability, safty and stable operation for the grid can be achieved
針對小接地電流系統單相接地保護的運行進行了論述，並分析比較了幾種目前採用的小接地電流系統單相接地保護的功能及優缺點，建議採用一種既能選線又能定位的小接地電流系統單相接地保護裝置，以適應綜合自動化和現代化管理的需要，確保系統經濟、可靠、安全、穩定運行。According to the fact that power factor of low voltage power networks is very low in china and field bus technology is developing in the world, in order to enhance power factor of low voltage power networks, on the basis of central transmitting and controlling information among every compensation equipment, the author of this dissertation studies systematically the design principles of power factor dynamic compensation system. based on analyzing structure of control system at present, the author of the dissertation puts forward a distributed completely and multi - layer structure framework based on field bus technology and builds a power factor intelligent dynamic compensation system. the functions of compensation unit, intelligent node, host computer, are presented
根據目前低壓電網用電負載功率因數偏低和國內外現場總線技術的應用現狀，立足於提高交流電機的功率因數，基於將每個補償裝置進行集中監控、信息集中傳遞的思路，本文作者在分析現有的控制系統體系結構的基礎上，提出了基於現場總線技術的全分散式多層控制系統的體系結構，構建了功率因素智能動態補償系統；對補償執行單元子系統、智能節點子系統、上位機子系統三部分進行了功能分析。Copyright2003 beijing fountain microsystems co., ltd. all rights resevered. for any comments or suggestions, please mail to
高性能piii單寬compactpci非系統槽位cpu板卡， 1gb sdram ，雙pmc槽位，雙以太網介面。In some ways, it is analogues to a telephone switch - board with intelligence because it makes the connections between various functional units of the computer system and calls into operation each unit that is required by the program currently in operation
從某些方面來看，一個電話開關是智力的模擬物因為它使各種不同的計算機系統單元和呼叫連結入對每一個當前運作中的程序所需求的單位的操作。According to system requirements, this dissertation researches apt capturing system as below : ( 1 ). analyzing the ingredients of apt system, it includes launch and scan system, object reflector system, position & distance survey system, distance & speed survey system, and apt control system
本文結合系統要求，對apt捕獲技術作了如下研究: （ 1 ）分析了空間交會激光雷達apt系統的組成部分:包括發射掃描系統，目標反射系統，位置姿態測量系統，距離速度測量系統，以及apt控制系統單元技術。It is troublesome when it comes to a single phase fault happened on a non - direct - ground system, a host of scholars have dwelt on it. actually, most of these works are based on steady conditions
長久以來，小電流接地系統單相接地的故障選線和故障定位問題一直沒能很好的解決；很多學者做了大量的工作，但是，這些工作很多都是基於單相接地時穩態電容電流的分析的結果。Based on the analysis of the transient and stable features of fault information on line in single carrier power supply with ineffective grounding neutral, this paper puts forward a new method for fault location in small current power system called " gradual identifying law "
本文針對這一問題，在深入研究了中性點非有效接地單端供電系統發生單相接地故障后線路上的各處故障信息的暫態特性和穩態特性的基礎上，提出了一種新的小電流接地系統單相接地故障定位方法- 「遞進信息法」 。In the part of voice encryption, spatiotemporal chaotic system ( ocoml model ) and lfsr are used to generate multidimensional pseudo - random sequence. this sequence has a longer period, better randomicity, passing the verification of fips 140 - 2 security requirements. using the key stream generated by it to encrypt the voice gets a better security
在語音加密方面，本文利用時空混沌系統（單向耦合映象格子模型）與線性移位寄存器產生了高維的偽隨機序列，該序列周期很長，具有更強的隨機性，通過了fips140 - 2的安全性能驗證，利用其作為密鑰流對語音信號進行加密，獲得了更高的保密性。When the two - dimensional decoupling theory is applied to a single - mode laser system, it is shown that there is relatively large fluctuation in the phase when the laser undergoes from thermal light to coherent light. it is shown that increasing the noise correlation time t can also reduce the fluctuation in the phase of the laser light
將二維退耦理論應用到單模染料激光系統中時，我們還發現，當系統運行在從熱光場到相干光場的過渡過程中時，系統的位相存在相對較大的漲落，增加噪聲關聯時間可以抑制激光場的位相漲落。Firstly, the observability of linear and nonlinear systems and the basis of parameter estimation are discussed. particularly, the observability of single station bearings - only passive locating systems was analyzed and the influence of the moving state parameters of observer and target on the system locating accuracy is also researched. based on that, the conclusion about the relationship between different moving state parameter and locating accuracy is made
主要工作如下: （一）討論了線性和非線性系統的可觀測性以及參數估計的基本方法，深入分析了單站只測角無源定位系統的可觀測性，研究了系統和目標的運動狀態參數對系統定位精度的影響，得出了不同狀態參數與定位精度的定性或定量的對應關系。It combines two parts. sun workstations will be used as operator console. we are going to use mvme2431 in the magnet power supply system to run vxworks operating system
上位機部分的操作員控制臺使用sun工作站，磁鐵電源系統的控制計算機選用mvme2431 ，它採用powerpc處理器，其上運行vxworks實時操作系統；下位機採用單片機進行控制。For the running safety of stream turbine, the article discusses the design of monitor, developing method, precautions etc. the paper outlines the situation, devolvement and application home and aboard in stream turbine, and also discusses the monitoring principles, circuit design of input and output channel and communication interface. the monitoring software system is designed with pic microcomputer whose arithmetic is studied in the article. the software groups several scattered procedure into only one, which simplifies the development process and management for users
文中綜述了目前國內外汽輪機監控系統的現狀、發展和應用；對于監控系統的硬體電路設計，從監測原理、輸入輸出通道電路設計，通訊介面設計等方面進行了探討，並充分利用pic單片機進行了控制軟體的設計，分析了部分演算法的實現，並創造性將數個原分散的系統儀表的控製程序集成到單一的軟體中去，簡化了開發過程和用戶對軟體的管理；同時，文章分析了智能系統儀表可能產生干擾的因素以及相應處理措施；介紹了系統上位機軟體的功能，並重點分析了實時數據採集功能的實現方法，給出了具體的程序代碼；最後，文章論述了系統的調試方法及實驗結果。This paper analyzes the development of the computer supervisory control system which is used in the small hydroelectric plant on abroad and at home, especially the status quo of the small hydroelectric plant at home, and aims at the features of the small hydroelectric plant, the paper develops a set of software about main control computer which is fit for computer supervisory control system of the small hydroelectric plant, and which have such characterizations, such as advanced and useful, simply manipulation and control, good interface between man and computer, low cost and easy installation
本文分析了國內外小型水電站計算機監控系統的發展狀況，尤其是國內小型水電站的監控系統現狀，針對小水電站的特點，開發了先進實用、操作簡單、控制方便、人機界面友好、通用性好、安裝方便適合小水電站的監控系統上位機軟體。Because there are some shortcomings on tuning the parameters of conventional pid controller, which include the difficulty to make sure the direction of tuning, the possibility to cause the crash of system and the requirement of the system ' s model parameters, a new self - tuning algorithm of pid based on wavelet is proposed in this paper, which is using some wavelet items to describe the state of system through studying the connection between the step response of system and the wavelet transform of the step response and simulating it by use of matlab
由於常規pid控制器參數調整中存在不少缺陷，如調整方向難以確定，容易引起系統崩潰，有些方法需要知道預先確定系統模型參數等。針對這些情況，本文通過研究小波變換的特點以及控制系統單位階躍響應和響應的小波變換之間的關系，在應用hatlab軟體進行了大量模擬研究的基礎上，找到了表徵系統狀態的小波指標，提出了一種基於小波變換的pid參數自調整演算法，為研究小波變換在控制領域的應用提供了新的思路。Finally they were realized in virtual system. the experiments were designed for testing fiber ' s positioning precision, controlling time, fiber rate of utilization. the experimental data were obtained which totally reach specification requirement for the project
根據系統定位精度、控制時間、光纖使用率等技術要求，在虛擬環境中測試得到了極坐標運動單元的各方面性能數據，完全達到了項目的技術要求。分享友人