虛加速度 的英文怎麼說
中文拼音 [xūjiāsùdù]
虛加速度
英文
false acceleration-
With the development of photography technology, the data of photography will increase, we have adopted segmentation of the data model to the display of the photography picture. we adopt technology of segmentation of mesne data, have solved the problem of carrying on the picture with slower processing speed, and make the performance of the 3d virtual simulation system promoted
隨著航拍技術的不斷發展，航拍圖像的數據量將不斷快速增加，針對航拍遙感圖像的顯示，採用了數據模型的分塊。通過採用中間數據分塊技術，很好地解決了海量航拍圖像在進行處理操作中速度較慢的關鍵性問題，使三維虛擬系統的性能得到提升。This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。Early last year, articles extolling the virtues of the new economy abounded as " techno - mania " gripped global equity markets. much has changed since then : following the subsequent plummeting of the tech - heavy nasdaq index, the average american has seen his net worth decline for the first time in more than fifty years. the network economy is not the end of history
網路經濟並沒有從根本上改變實物經濟的運行規則，但是，在網路這個載體上，實物經濟的增值鏈被鏡象到網路上形成虛擬的增值鏈，而整個增值過程依靠電子信息流來連接，它的好處是使增值的成本下降、速度加快、范圍擴大。Secondly, i applied the method of matrix analysis to build up mathematic model of swaying platform, and solved the question of motion anti - solution, velocity and acceleration. then i analyzed the dynamics problems of the swaying platform. based on the calculation of the swaying platform ’ s force and moment, built up the dynamics equations of swaying platform by using virtual work principle
其次，應用矩陣分析和齊次坐標變換建立了搖擺臺的運動學數學模型，從反運動學的角度分析了搖擺臺的位置、速度和加速度的反解方程;分析了搖擺臺的動力學問題，通過對搖擺臺的驅動桿進行附加力和附加力矩計算，並利用達朗貝爾原理和虛功原理，建立了搖擺臺的動力學方程。In the paper, based on the method of low pair replacing with high pair, the problem of cam design was transferred to that of linkage design. by means of rotary unit vectors, the equations of displacement, velocity and acceleration of the replacement mechanisms were developed. and then, the virtual linkage ' s length and direction were deduced
論文基於高副低代原理，將平面凸輪機構設計與再現函數的平面連桿機構設計統一為同一種方法，運用圓向量函數建立代換機構的位移、速度、加速度矢量方程式，求取虛擬連桿桿長和方向，由此展開凸輪理論廓線、實際廓線、曲率半徑和壓力角的求解，並得出用圓形刀具加工凸輪時刀具中心的軌跡方程。In addition to bypassing the complexity of building a kernel to emulate and a file system image to boot into, and configuring a virtual network device for io, this shortcut also speeds up emulation, as the reams of kernel instructions that would have run to handle the system call - from the exception handler through the vfs and the device driver - are bypassed
除了繞開構建一個用於模擬的內核和一個用於啟動到其中的文件系統鏡像，以及為io配置虛擬網路設備的復雜性之外，這條捷徑還加快了模擬的速度，因為繞開了從異常處理程序到vfs再到設備驅動程序的很多內核指令，而這些內核指令本來就是用來處理系統調用的。3. the project using ins / gps system data to estimate the angle of attack and sideslip is brought forward first. this project using the ins / gps system data, such as acceleration and velocity signal, and others signals of the aircraft, such as gyros and the mathematic models, to estimate virtual signal
首次採用ins gps系統數據來估計迎角和側滑角傳感器參數原理和方法，利用ins gps系統測量的地速和總加速度信號結合飛機其他傳感器和數學模型估計得到了迎角和側滑角傳感器的虛擬信號，該種方法具有很好的實時性。In this task, a test _ bed for engineering vehicles was developed based on virtual instrument. the whole system comprised 5 parts : the checking of running velocity, which was gotten on the test bed through the vehicles simulating real road running ; the temperature checking of the important points on the transmission system ; the temperature checking of the circling cooling water on the exit port of dynamometers ; the control of the loading power. which was given to vehicles by the power measuring machine ; the control of the total test - run time
本課題開發的基於虛擬儀器的工程機械跑合試驗臺，其測量和控制參數有：行駛速度檢測（車輛在跑合試驗臺上模擬路面的行駛速度） ；傳動系溫度檢測（試驗車輛傳動系主要部位多點溫度） ；冷卻水溫度檢測（測功機循環冷卻水出口溫度） ：加載功率控制（測功機施加給車輛的載荷） ；跑合時間控制（試驗車輛在試驗臺上加載跑合的總時間） 。It combines the real echoes with the date simulated using the real airborne sar system parameters to analyze and validate the method. after the combined data are filtered, the improved greatest of cell - average constant - false - alarm - rate ( go - ca - cfar ) is used to judge whether moving target is detected or not. in the following, real moving target is detected and its velocity and position is gained through which it is focused well
將接收的實際場景數據與實際系統參數下模擬的典型數據相結合，分析、驗證了頻域濾波法的性能，並對濾波后的數據採用改進的選大單元平均恆虛警率（ go - ca - cfar ）方法進行處理，判斷動目標是否存在；然後對實際的動目標進行檢測，準確的估計出目標速度及位置並對目標重新聚焦成像，接下來將聚焦的動目標圖像和常規sar圖像迭加，同時得到了回到真實位置的動目標聚焦圖像和實際場景sar圖像。For example, we can draw waveform with mouse or formula. vxi bus instrument is ideal choice and labview improves the speed of vxi measurement and programming. labview becomes more and more popular because of its good operation and strong function
Vxi儀器是虛擬儀器實施的當然候選者， labview提供的用流程圖將虛擬儀器連接到方塊圖的方法加快了vxi測試系統配置和編程速度。Tell in more wide - meaning, the introduction of ict simulation supplies a virtual digital platform, which has the functions of accelerating research and reducing cost in the development of ict equipment and in the researches and application based on ict, and also has the significant theory researching sense and economic value
從更廣泛的意義上來說， ict模擬這項技術的引入，提供了一個數字化的虛擬平臺，無論對ict設備的研製開發，還是基於ict的各種研究和應用都起著加速研究進度、降低研究成本的作用，具有重要的理論研究意義和應用及經濟價值。Some further research work on the theories and methods of the calibration of piezoelectric accelerometer has been done and control techniques of virtual instrument have been introduced to increase the automation degree of the calibration system in this paper
本文在壓電加速度傳感器的校準理論和方法問題上作了進一步的研究工作，並引入虛擬儀器控制技術到校準系統中提高了校準系統的自動化程度。The introducing of control techniques of virtual instrument ( vi ) in the calibration system by this thesis not only makes the costly instruments is not necessary, but also make use of computer to control the calibration system and acquire, analysis, handle and save output data of piezoelectric accelerometer
論文引入了虛擬儀器控制技術到校準系統中，不僅可以省去了相對昂貴的多的實際測量儀器，而且還利用了計算機對整個校準系統的自動控制，以及對壓電加速度傳感器的輸出信號數據的自動採集、分析、處理和保存。The four parameters ( spring inclination a, the frequency of excitation force w, the amplitude of excitation force f, the spring stiffness k ) are the major factors that take great influences on the vibration plate. in order to analyzing the influences of four parameters, the virtual prototype of vibration plate is built in ansys to get inherent frequency from modal analysis. thorough transient analysis in ansys, the curves of displacement n velocity and acceleration is presented
為了分析這四個參數對系統的影響，首先在ansys中建立振動排秧盤的虛擬模型，採用有限元方法對模型進行了模態分析，得到振動排秧機構的固有頻率；同時對模型進行動力學分析，分析排秧盤的振動量、速度及加速度，並得出相應數據的曲線圖；另外，校核了主要元件彈簧的疲勞強度及使用壽命。In order to meet the requirement of high speed and precision in processing complicated shape and three - dimension bend surface on the virtual axis machine tool, a kind of pc control system is introduced
摘要根據虛擬軸機床加工速度快、精度高、加工形狀復雜的特點，提出了一種基於pc機的控制系統實現方案。To improve virtual memory management mechanism, the kernel code is amended to avoid the incertitude cause by page scheduling, thus the responding speed is effectively improved. the irrationality of linux scheduling mechanism is also analyzed, and the methods and models such as to fortify scheduling occasion and adopt double kernel are also proposed to improve it
在虛擬內存管理機制的改進上，作者從操作系統內核入手，對內核代碼進行修改，去除了由於頁面調度帶來的響應不確定性，有效的提高了系統的響應速度；在實時調度上，分析了linux現有調度機制的不合理性，提出了增加調度時機、採用雙內核等方法，給出了改進的模型。At the same time, a series of development trend in organization structure innovation under the information environment has been put forward : flat model is the basis of organization structure optimization ; flexibility not only is beneficial to organization creation, innovation and accelerating reaction speed, but also strengthens organization ' s control centripetal force during the process of being operated continuously. it has rapid adjusting ability in time according to unexpected results of predictable change ; networking can not only decrease internal management cost and realize integration between supply chain and sale chain in worldwide, but also realize enterprise " s completely authorized managemen in order to promote substantial leap in enterprise economic benefit ; virtual model is centralizing limited resources on high additional value function and making low additional value virtual in order that the largest resource support can be obtained in the lowest cost and the whole organization is operated in the most effective way for adapting to market " s rapid change with high elasticity ; creating learning pattern in organization makes enterprise expand the width and depth of information being exchanged with the outer so as to keep enterprise in an unassailable position
提出信息化環境下組織結構創新的一系列發展趨勢：扁平化是組織結構優化的基礎；柔性化既有利於組織的創造、革新、加快反應速度，又能使組織在不斷磨合中加強控制的向心力，具有適時根據可預期的變化的意外結果迅速調整的能力；網路化不僅減少了內部管理成本、實現了企業全世界范圍內供應鏈與銷售環節的整合，而且實現了企業充分授權式的管理，極大地促進了企業經濟效益，實現質的飛躍；虛擬化是將有限的資源集中在附加值高的功能上，而將附加值低的功能虛擬化，以最小的代價獲得最大的資源支持，從而使整個組織以最有效的方式運轉，以高彈性化來適應市場的快速變化；創建學習型組織，使企業拓展了與外界進行信息交流的廣度和深度，使企業立於不敗之地。An integrated auto - testing system for accelerometer based on virtual instrument
基於虛擬儀器技術的加速度計集成自動測試系統It is always a paradox to improve the performance of tracking initialization and to reduce its time cost, through tracking initializationhas been divided into different ranks to which we have different treatment, initializing fleetly for high rank, waiting to the next one or two step to initialize for lower ranks, non - initializing for the lowest ranks. the result of simulation shows that this method accelerates the average initialization velocity with certain probability of initialization and false initialization
航跡起始質量與航跡起始時間的矛盾一直是難以解決的問題，通過引入航跡起始等級化的方法，不同等級的起始航跡區別對待，等級高的航跡快速起始，等級較低的航跡延遲一步（或兩步后）起始，等級最低的航跡暫時不起始。模擬結果表明，此方法在保證一定航跡起始概率與虛假航跡概率的情況下，加快了平均起始速度。Developed system based on opengl and some pertinent algorithms. 5. developed graphic interface between opengl and modeling software creator, resolving the problem of rapid modeling
單靠opengl提供的繪圖函數不能有效地完成虛擬城市的幾何建模任務，本文開發了三維建模軟體multigencreator與opengl的圖形介面，加快了建模的速度。分享友人