field control testing 中文意思是什麼
field control testing
解釋
現場控制試驗-
Specific requirements for the competence of testing laboratories for noise and vibration in the field of immission control
排放控制區噪聲和振動檢驗的實驗室的能力的特定要求 -
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。 -
It introduced designs of acoustic structure of high sound insulation testing room, and applications in the field of sound - absorption, which provide reference for the professional personnel engaging noise control and architectural acoustics
摘要介紹了高隔聲測試室的聲學結構設計及在吸聲領域的應用，以供噪聲控制和建築聲學專業人員參考。 -
With a view to the characteristics of contactor dynamic process that are short - time and great data, dsp is selected as mcu to realize real - time and high - speed collection of the contactor dynamic process testing parameters. field bus is used in this device to realize remote control, measurement and adjustment
針對接觸器動態過程時間短、數據量多的特點，選擇dsp作為核心控制單元，實現對接觸器動態過程參數數據採集的實時與高速，並將現場總線技術引入接觸器動態測試系統，實現測試過程的遙控、遙測、遙調。 -
This paper analyses the character and difficulty of batch control, researches realization technique of batch control based on pcs, presents logic interlock model between testing steps and circuitry switcher, and motor testing field control scheme. shcan2000 system, the hardware and software design and realization are also deeply discussed
本文分析了間歇控制的特點和難點，研究基於現場總線控制系統實現間歇控制的方法，提出了試驗步驟與線路開關邏輯互鎖模型和電機試驗現場控制方案。 -
And pid control system was designed and implemented on the base of the control object modeling, which was considered to work well in most cases, after debugging, testing and running in the field, except some key drawbacks including weak robustness and lack of solution for the coagulation on the valve
在系統試運行一段時間后發現， pid控制策略能夠滿足多數情況下的控制要求，尤其是在系統的擾動不太大的時候，但是也存在一些關鍵性的不足，主要是魯棒性不夠和調節閥塞棒掛渣問題沒有好的解決方案。 -
In order to deal with effect of the high damping, focusing probe with focused sound field is used in testing. the image device of ultrasonic c - scanning, which has functions of ultrasonic testing, pc - based control, data collection, data storage, data processing and image displaying together, is applied in testing for the sake of visual testing result
為了克服高阻尼影響，採用了具有聲束聚焦性能的聚焦換能器對不同形狀的該種復合材料工件進行檢測；為了得到直觀的檢測結果，運用了將超聲檢測與微機控制和微機進行數據採集、存貯、處理、圖像顯示集合在一起的超聲c掃描成像技術，並得到了工件內部缺陷的橫截面圖。 -
The method of linearizing the temperature field in the space of hearth based on the arithmetic of marching cube is proved to be available within the analytical precision by experiment and testing result. it is valuable to measure and display temperature field in the space of hearth and to put it into practice. it is propitious to observe and control the temperature in the space of hearth efficiently
實驗檢測表明，這種利用marchingcubes演算法對爐膛內空間溫度場進行分段線性化處理的方法，在一定的精度范圍內是有效的。爐膛內部溫度場的圖像顯示使得對熱處理爐膛內部溫度場的分析更簡單、直觀，使我們更有效的對熱處理爐的爐膛溫度進行觀測、控制，從而提高熱處理工件的質量，具有較高的實用價值。 -
Then analysis the testing data at the base slab of big bridge in yangtze river of badong comparing with calculating result. by means of this, conclude the principle of temperature field and thermal stress, summarize the effect of different crack control measures, propound some useful suggestions for worksite, show the direction for further more investigation at last
對巴東長江大橋施工現場主墩承臺溫度、應力測試結果和計算結果的分析比較，總結了大體積混凝土溫度場和溫度應力變化的一般規律，討論了施工現場常用控制溫度技術措施的實際效果，提出了施工現場裂縫控制的一些建議。 -
Modem large - screen color tv sets have digital direction of the rapid development, with a super - scale integrated circuit design and manufacturing process technology and continuous improvement in computer application in the field of color, making large - screen color television sets in various functional control, commissioning, testing and maintenance matters with a new digital technology, i. e., i ^ 2c bus and the unique maintenance methods
摘要隨著超大規模集成電路設計工藝和生產製造技術的不斷提高以及電子計算機在彩色電視機領域的廣泛應用，使得大屏幕彩色電視機在各種功能控制、生產調試、檢測維修等方面有了一個嶄新的技術，即i ^ 2c總線及其特有的維修方法。 -
The research of titling train testing & control system is the science and technology development item of the railway ministry. considering the engineering application, dsp technology, the main direction in the field of digital signal processing, is discussed in this paper
擺式列車測控系統的研製是鐵道部科技開發項目，論文結合數字信號處理器（ dsp ）在數字信號處理領域的主要技術，從工程應用的角度深入地研究了dsp技術並很好地應用在擺式列車測試系統中。 -
Based on the characteristics of the giant magnetostrictive material, this article designs giant magnetostrictive micro - displacement actuator, and primary research contents are as follows : establishing drive magnetic field structure, designing closed loop control system, constant current source, temperature control system, magnetic field perceptual system and doing experiment testing
本文根據其工作特性設計了一種基於超磁致伸縮材料的微位移驅動器，主要研究內容包括:建立閉環控制系統、設計驅動磁場結構、恆流源驅動電路、溫控系統和磁場感知系統以及系統性能的實驗測試。
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