試差法 的英文怎麼說
中文拼音 [shìchāfǎ]
試差法
英文
trial and error method-
Because it is impossible to adjust the air bearing absolutely balance, the difference between mass center and rotation center must lead to a notable gravity disturbance torque. in the process of identification, modeling and identification of gravity disturbance torque is considered, and an extended kalman filter is educed for identifying air bearing inertia matrix and gravity disturbance torque, and then the algorithm is validated
由於氣浮臺平衡調試方法和手段的限制，實驗過程中氣浮臺質心與轉動中心有一定的位置偏差，必將導致較大的重力干擾力矩，在辨識演算法的推導過程中，重點考慮了重力干擾力矩的建模和參數辨識問題，推導了氣浮臺的轉動慣量和重力干擾力矩辨識的擴展卡爾曼濾波演算法，並對演算法進行了數學模擬和全物理模擬驗證。Trial and error revealed that it was best to put in the amide before the epoxide.
嘗試和誤差法表明，最好在環氧化之前引進酰胺基。The nbs computer - controlled manometric permeation measuring facility was employed for the collection of the data
（使用了國家標準局的計算機控制壓差法滲透測試裝置來獲得測試數據。 ）The most important criteria that used to check the calibrated model are root mean square error ( rms ), the mean absolute error normalized rms error, and mass balance
模型參數使用試錯法識別，識別過程中最重要的指標是均方差、平均絕對誤差、標準均方差和水均衡。Standard test method for thiol mercaptan sulfur in gasoline, kerosine, aviation turbine, and distillate fuels potentiometric method
電位差法測定汽油煤油航空渦輪機燃料及餾分燃料中硫醇態硫含量的標準試驗方法Second, carried out the fatigue life test of the truck ' s front axles adopted grouping fatigue life test method, calculated the results on theory of probability stats, linear fitted the fatigue life data by means of the basquin equation and least squares method, acquired the mathematical model of s - n and p - s - n curve of the front axles
其次，採用成組試驗法，對汽車前橋進行了疲勞壽命試驗，藉助概率統計方法對試驗結果進行了分析計算，得到了各試驗載荷下的疲勞壽命的正態分佈的均值和標準差，採用basquin關系式和最小二乘法對疲勞壽命數據進行線性擬合，得到了前橋的s - n和p - s - n的關系。This paper first begin with the connotation of virtual instrument technology, study and discuss the criterion and the working theory of usb deeply. on the principle of usb1. 1criterion, using usb interface chip usbn9604 and low consumption mirochip c8051f231, we designed the available interface of usb bus and its controlling software, turn the communicating function based usb bus between computer and testing device. second based on the developed interface of usb bus, using microchip pic16c62 and a mount of relays, we designed the multiswitching scanner and its controlling software to complete the funtion of accesses swithing in testing system. third calling the api function inside the windows using vb programming language, communicat with the impelling program of selected hid, achieve the function of testing instrument with usb interface, complete the development of upside software faced testing. at last, based on the deep studying of pcb testing method, used the developed multiswithing scanner and software faced testing, combinated with necessary testing instrument, we constructed the pcb testing system and analized the testing result simply
論文首先從虛擬儀器的技術內涵出發，深入研究和討論了通用串列總線usb規范及工作原理，並依據usb1 . 1規范，採用usb介面晶元usbn9604和低功耗微處理器c8051f231設計開發了通用的usb總線介面及其控制固件，實現了通用計算機與測試設備之間基於usb總線的通信功能；其次，在所開發的usb總線介面的基礎上，使用微處理器pic16c62和多路繼電器開關，設計開發出實現測試系統中測試通道切換功能的多路通道掃描器及其控制固件；再次，採用vb語言編程，調用windows內部api函數，與選定hid類驅動程序進行通信，實現usb總線介面測試儀器功能，完成面向測試的上層軟體開發；最後，在深入研究印刷電路板測試方法的基礎上，利用已開發的多路通道掃描器和面向測試軟體，結合必要測試儀器組建印刷電路板測試系統，並對測試結果進行了簡要的誤差分析。The paper proceeds from the transient equation for voltage and torque, analyze the electromechanic time constant of permanent - magnet dc servomotors based on the theory, and compare with the several testing methods which are used normal in the engineering, point out the difference and applying area also for the testing error which is led to possibly
摘要為了準確評價伺服電動機的動態性能指標，從電機的電壓、轉矩平衡方程式出發，在理論上對永磁直流伺服電動機的時間常數進行了分析探討，並對工程實際中常用的幾種測試方法進行分析和比較，指出其差別和適用范圍以及可能造成的測試誤差。Among the many testing methods of analog and mixed signal circuits booming up in recent years, the pseudorandom testing technique is easier to generate testing stimuli and the current - based testing method could magnify the response differences between fault - free circuits and faulty circuits
近年來提出的很多種模擬及混合信號電路測試方法中，偽隨機測試法易於產生測試激勵，基於電流的測試法能使正常電路和故障電路的頻率響應的差別增大。In addition, the paper designs a bottom database model, selects a multi - aim strategy combining files with known data, and establishes dual interaction data model that has explicit conceptual structure and directly aims to geographic objects, and provides backing up enquiry language ( g - sql ). simultaneously, after analyzing and studying methods available for the under pipelines, the paper constructs survey adjustment calculation model, and according to the model, checks the survey of under pipelines. the results indicate that the model is suitable to actual requirement because it greatly increase calculation speed, meeting calculation accuracy requirement
在此基礎上，對系統的底層數據模型進行設計，選擇了文件與成熟數據庫相結合的混合策略，併兼顧面向對象的數據庫（ oodb ）和可擴充數據庫（ edb ）的特點，建立了一個概念層次清晰、面向地理對象實體的雙層語義數據模型以及支持模型的查詢語言g - sql ，同時對地下管線的各種測試方法進行分析研究，建立了地下管線測量平差計算模型，並以此對所勘測的地下管線進行核算，計算結果表明，計算模型不僅大大提高了核算的速度，同時在計算精度上也符合核算的要求，是符合實際要求的關于測量平差計算的模型。Standard test method for structural performance of sheet metal roof and siding systems by uniform static air pressure difference
用均勻靜態空氣壓差法測定薄金屬板屋頂和板壁系統結構性能的標準試驗方法The testing technique and system of the newly developed, miniaturized sputtering ion pump with low pumping speed has been developed in accordance with the standards formulated by machine industry
摘要本文介紹了小抽速微型濺射離子泵的性能測試系統和參考機械行業標準確定的測試方法，探討了測量結果誤差來源。In this paper, we first analyze each factor of influencing threshing performance, and deficiency of all traditional methods such as single factor, orthogonal experiment, variance analysis and regression analysis, which have been used to study the threshing performance. in the basis of above analysis, we propose a new method of threshing performance modeling - a bp neural network. by use the new ways of threshing performance modeling - a bp neural network, we can obtain the optimum model of threshing performance, which can better describe the seed - husking plant ' s feature of complex nonlinear, multi - input - output and indefinite
本文首先分析了影響脫粒裝置性能的各個因素以及傳統研究脫粒性能的各種方法如單因素法、正交試驗法、方差分析法以及回歸分析法的缺陷，在此基礎上提出了採用bp神經網路對脫粒裝置性能模型進行優化，採用這種方法優化脫粒裝置性能模型可以更好地刻劃脫粒裝置所具有的多輸入多輸出、復雜非線性以及不確定性等特徵。Lewis relationship has been suggested to evaluate the surface mass transfer coefficient using the average surface convective transfer coefficient. in addition, a practical analytic technique for testing the surface mass transfer coefficient is proposed and the values of he surface mass transfer coefficient have been given for the particular desorption and absorption test and validated against lewis relationship results. indoor temperature and humidity evaluation equations of adobe buildings considering the moisture absorption and desorption by interior materials have been proposed based on the analysis of the indoor dynamic thermal and moisture process
通過理論解析和實驗測試定量地研究了生土建築圍護結構表面吸放濕效應，首次提出了以空氣濕度（ kg / kg ）為驅動勢差的圍護結構表面吸放濕量計算公式，該公式較適用於工程計算，從而為使建築濕環境研究成果逐步應用到建築工程實踐中奠定了理論基礎和提供了簡便演算法；通過對國內外關于表面質交換系數確定方法的研究成果的分析，提出用lewis關系計算生土建築圍護結構表面質交換系數；在實驗室環境下，對生土建築圍護結構表面質交換系數進行了測試方法研究，測試結果和利用lewis關系得到的數值較接近。Optical fibre amplifiers - basic specifications - part 5 - 3 : test methods for reflectance parameters ; reflectance tolerance test method using electrical spectrum analyzer
光纖放大器.基本規范.第5 - 3部分:反射參數的試驗方法.使用電譜分析儀的反射公差試驗法Lwac is becoming one of the important trends in the development of modern concrete. to solve the problems such as poor workability, large shrinkage value and crack easily of lwac, on the basis of systematic experiments, the author establishes lwac workability evaluation system and advances the testing method of pumping performance of lwac ; the control technology of discrete of lwac is introduced through analyzing structure formation process and establishing the mathematic model ; based on studying the strength source of lwac and the function mechanism of artificial additive, this paper not only confirms some major factors which affect concrete strength but explores the preparation technology route of high strength lwac ; the different effects of several fibers in lwac have been studied, and the fiber is introduced in pumping lwac to improve its crack - proof performance
本文針對輕集料混凝土工作性能差、收縮變形大、易於開裂等問題，根據大量實驗建立了高強輕集料混凝土工作性能的評價體系，提出了高強輕集料混凝土可泵性的測試方法；通過分析輕集料混凝土的結構形成過程，建立了輕集料混凝土拌和物物料運動的數學模型，提出了防止輕集料混凝土分層離析的技術措施；通過對輕集料混凝土強度來源和礦物摻合料的作用機理的深入研究，確定了影響輕集料混凝土強度因素的主次關系，提出了配製高強輕集料混凝土的技術路線；研究了纖維在輕集料混凝土中的增強增韌、減少收縮的作用機理。Standard method for testing sectional garage doors : determination of structural performance under uniform static air pressure difference
住宅車庫門的標準試驗方法:用均勻靜態空氣壓差法測定結構性能Standard test method for structural performance of exterior dimension stone cladding systems by uniform static air pressure difference
用均勻靜態空氣壓差法測定規格石料的房屋骨袈外墻體系結構性能的標準試驗方法Consider the robustness of the designed product, of robust optimal design is found ; through transmitting the tolerances and controlling the effects of variability in design variables and parameters on design functions, we keep the robustness of design solution ; analyzing the randomicity of quality criteria in robust optimal design. according to probability theory and statistics, getting the solution of statistic speciality of objective function using stochastic simulative experiment method
通過分析實現設計產品穩健性的途徑，建立了穩健優化設計目標函數；通過變差傳遞，控制設計參數的變差對設計函數的影響，保證設計解的穩健性；分析穩健優化設計質量特性的隨機性，運用概率論與數理統計理論方法，利用隨機模擬試驗法對產品質量的統計特性進行計算和處理。For the measurement of analog signals such as voltage and current of astg, a filter card for pre - disposing is designed, in order to improve real - time performance, algorithms for ac analog sampling is simplified, and a compensation algorithms for phase error due to sequence - sampling is brought forward. for the measurement of impulse - width signals such as rotor - speed and rotor - position - angle, an intelligent interface card based on isa bus is designed. all programs for measure and control based on c + + are compiled and debugged and the flow for system debugging is summarized
為了提高實時性，對交流采樣演算法進行了簡化，並提出了由於非同步順序采樣所造成的相位誤差的補償演算法；針對轉速、轉子位置角等脈沖寬度信號的測量，深入分析了測量原理，設計了基於isa總線的智能介面卡；編制和調試了基於c + +的全部測量控製程序；完成了整個系統的調試，並總結了調試方法。分享友人