通量校正法 的英文怎麼說
中文拼音 [tōngliángjiàozhēngfǎ]
通量校正法
英文
flux updating method- 通 : 通量詞(用於動作)
- 量 : 量動1. (度量) measure 2. (估量) estimate; size up
- 校 : 校名詞1. (學校) school 2. (校官) field officer3. (姓氏) a surname
- 正 : 正名詞(正月) the first month of the lunar year; the first moon
- 法 : Ⅰ名詞1 (由國家制定或認可的行為規則的總稱) law 2 (方法; 方式) way; method; mode; means 3 (標...
- 通量 : [物理學] flux; shower
- 校正 : check; correction; adjust; revise; proofread and correct; rectify; calibrate; make true; master c...
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Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground
針對存在的缺點,本文提出了一種應用於激光多普勒測速的高精度信號處理技術,即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜,搜索其譜峰值頻率,接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析,再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析,從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來,充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率,通過goertzel演算法獲得分析頻帶的高解析度頻譜,然後通過能量重心校正演算法對細化后的頻譜進行高精度校正,這樣不僅保證了演算法的高效性,而且大大提高了分析的精度。The method of adjusting parameter of fuzzy control automatically is introduced into two - stage vibration isolation, and the scaling gains are revised online
將參數自校正模糊控制方法引入雙層隔振系統,通過在線整定量化因子。The methods reported by g. s. young in 2000, are applied on sea surface sar images featured by three dimensional convective cells. then the following parameters are retrieved from sar images : the characteristic wave length of three dimensional convective cell, the mabl depth, the vertical convective scale velocity, the surface buoyancy flux, obukhov length and the stability correction factor for sar derived sea surface wind speed
針對海洋大氣邊界層中三維對流渦旋sar圖像,用g . s . young在2000年發表的方法,反演三維對流渦旋的特徵長度、海洋大氣邊界層高度、以及海洋大氣邊界層垂直對流尺度速度、表面浮力通量、海面風速穩定性校正因子和obukhov長度。Study shows that the basic principles of three existed methods for phase difference correction on discrete spectrum are identical, by which the twice fft analysis through time - domain shifting time series or changing window ' s length is performed, and the spectrum by making use of the phase difference of two corresponding peak lines are finally corrected
在研究時域平移的離散頻譜相位差校正方法和改變窗長離散頻譜相位差校正方法的基礎上,發現這幾種離散頻譜相位差校正法的基本原理是一致的,就是通過時移和加不同的對稱窗進行兩次fft分析,並利用離散頻譜對應峰值譜線的相位差以求得頻率和相位校正量。Researching and analyzing on the test results of the influence of atmospheric parameters on outer insulation discharge voltage and its various emendation methods, it can be concluded that : with the change of relative air density, its humidity ratio h / ? will also change even though the absolute vapor mass ( absolute humidity h ) of the air is constant. consequently, the influence degree of the humidity on the discharge voltage should change, too
本文通過對以往的大氣參數對外絕緣放電電壓影響的試驗成果及各種校正方法的研究分析認為:隨著相對空氣密度的變化,即使空氣中所含水氣的絕對質量(絕對濕度h )保持恆定,其比濕h也會變化,必然地,濕度對放電電壓的影響程度也會變化。The distributed plc system of the floodgate ' s opening measuring presented by the paper has many advantages such as high reliable operation, high measuring precision, having the network communication function, convenient installation and correction, etc. this thesis further studies the key device for the floodgate ' s opening measuring, the rotary encoder, selects the absolute rotary encoder adopting the binary cyclic code, studies the method for transforming the cyclic code to the binary data and according to the transforming formula designs the ladder diagram program
本論文研製的分散式plc閘門開度測量系統具有工作可靠、測量精度高、具有聯網通信功能、安裝和校正方便等特點。本論文深入研究了閘門開度檢測的關鍵器件? ?旋轉編碼器,選用了採用二進制循環碼編碼的絕對式旋轉編碼器,研究了將二進制循環碼轉換為二進制數的方法,根據轉換公式設計了plc的梯形圖轉換程序。The 3d model needs three parameters, among them, the distance from the dam and the distance from the starting point of the section can be measured directly, and the depth of the water corresponding to the distance from the starting point of the section can be measured by the sounding device. however, because the reservoir is very deep, the measuring error of the water depth is greater
而建立其三維模型需要三個參量,其中距壩里程、備斷面起點距可直接測得,而對應于各起點距的水深值因丹江口水庫較深,按通常的方法使用回聲儀測深,即以水下二米處的水溫校正回聲儀的轉速來測深有較大誤差。In this paper, an early well testing method for correcting afterflow region pressure falloff data is introduced
通過校正續流段壓力數據,使用了考慮嘴損的早期試井方法進行解釋,同時反求出續流量,計算出地層參數。Since the camera lens used in computer vision sustain a lot of nonlinear distortion, recent research efforts has been concentrated on the distortion correcting technique. the optimization algorithms in conventional calibration field have shortcomings that the computing quantity is colossal. in order to improve it, tsai two steps ’ algorithm was developed in conventional camera calibration in this dissertation, and a calibration algorithm considering radial distortion
由於攝像機鏡頭存在著畸變,對于要求精度定位的應用,需要進行畸變校正,而傳統的標定演算法中存在著計算量大的不足,本文採用tsai氏兩步標定法是考慮一階徑向畸變的攝像機標定演算法,與其它優化演算法相比具有簡單實用、計算量小的特點,並通過實驗驗證了該演算法的可靠性和有效性。Chapter four is focused on this and it gives us a very detailed introduction to the calibrating idea and algorithm realizations. it also introduces the calibrating performances by using three different off - line calibrating algorithms along with the simulation results
文章第四章針對離線校正的思路與演算法作了詳細地介紹,比較了三種離線校正演算法在不同的誤差模型與噪聲模型中對和差接收通道校正後角度測量精度變化的情況。This thesis mainly describes a tesing and consoling kit based on ni " s special virtual instrument software development kit - labwindows / cvi, aming at traditional testing device " s limitation such as high cost of hardware, complexity of construct, singleness of function etc. the tesing and consoling kit can condition the signal intermixed with interfere noise and deal with the collected datum through common signal conditioning ( amplification, isolation multiplex filtering ) -, software calibration digital filtering etc to analyse signal in time and frequency domain
本文針對傳統測量設備硬體成本高、構造復雜、重用性差、功能單一等方面的問題,著重探討了利用ni的labwindows cvi這一虛擬儀器開發軟體構建的測控平臺,通過通用信號調理(如放大、隔離、多路轉換、模擬濾波等) 、軟體校正、數字濾波等方法對混雜有干擾的信號進行調理及採集后的數據進行處理,然後進行時域或頻域的分析。Based on a great of laboratory investigation carried out on the ac flashover performance of several types of insulators in the multi - function artificial climate chamber of chongqing university, this paper studies systematically the ac flashover performance of several type of insulators and puts forward a flashover voltage correction method for the atmospheric environment at altitude of 3500 m above, and discusses the flashover process and mechanism of the iced insulator
本文在國內外現有研究成果的基礎上,通過大量的人工氣候室模擬試驗研究和理論分析,對海拔3500m以上地區覆冰和污穢絕緣子的交流閃絡特性及閃絡電壓的校正方法進行了系統研究,並對覆冰合成絕緣子的閃絡過程和機理進行了初步探討。The contravariant velocity fluxes are used as the dependent variables in the paper. the discretization equations were sieved using the simple, simplec and simpler algorithms
選取曲線坐標系下逆變速度通量分量為獨立變量,由水位校正法求解水位流速耦合問題。Test method for calibration of atmospheric corrosion test chambers by change in mass of copper coupons
通過銅質量的變化對大氣腐蝕試驗室進行校正的試驗方法Later on, after elaborating the disadvantages of the old methods in detecting and recognizing moving objects, a series of corresponding approaches are proposed, such as grid scan, local tracking bug and dynamic window in object tracing to reduce the huge data needed to be processed, maximum and minimum for selecting a proper segmentation threshold and improved conversion from rgb model to hsv and so on to decrease the influence of inhomogeneous lighting and the color noise, a bilinear interpolation in each quadrant to eliminate the bad effect on the recognition precise because of the distortions of the camera. after that, much emphasis is given on application study in pattern recognition with a feed - forward neural network. both the basic bp algorithm and improved bp algorithm in the study process are described in detail, and the later is used to quicken convergence speed and improve validity of the network
然後,分析和闡明了傳統的運動目標檢測方法的不足,並在此基礎上結合研究中的實際實驗環境,提出了一系列解決方法,包括針對降低龐大數據量而提出的網格掃描、局部「跟蟲」追蹤和動態窗口掃描等目標檢測方法,針對實驗環境中光照不均和顏色干擾提出基於人機交互的最大最小值閾值選取方法和引入改進的rgb模型到hsv模型的轉換方法,為消除圖像畸變對識別精度的惡劣影響而採用的通過控制點進行雙線性插值進行畸變校正的方法;緊接著,概述了神經網路的發展歷史和幾種常用神經網路模型的特點,重點研究了前饋型神經網路在模式識別中的應用問題,詳細闡述了基本的bp演算法和學習過程中bp演算法的改進,從而使網路收斂速度更快,解決問題更有效,並在此基礎上,設計了一個基於bp神經網路的運動目標識別系統,給出了實驗結果。The experience results indicated the reliability of this kind of thermostatic control system. the analysis and compare about modern dielectric loss measuring methods are presented on chapter 3, and the zero - crossing testing phase discrimination method is adapted as the measuring method of this measuring system. furthermore, applied high frequency pulse technique, channel self - correction technique, anti - harmonic technique are used to increase accuracy and reliability of measurement
本文對現代介質損耗測量技術進行了分析與比較,採用過零鑒相比較法作為介質損耗測量方法,並結合外施高頻脈沖技術、通道自校正技術、抗諧波技術,設計了高精度介質損耗測量電路,有效提高了介質損耗測量的精度,減小了測量誤差。The experiment result shows that by adding this modification algorithm into normal fuzzy controller, overshoot of transition process that system responds to the step signal will be further decreased, and convergent speed will be further increased
實驗結論說明,通過在常規模糊控制器加入這種規則校正演算法,可進一步降低系統對階躍輸入信號響應的過渡過程的超調量,並提高的收斂速度。The structure and character of deformable mirror were analyzed, and the conflict between the deformation band and the pitch of deformable cells was pointed out. the " two - time compensation " wave - front correct mode was introduced to settle that conflict. the method for allocating wave - front aberration and designing static corrector was found, and the " two - time compensation " wave - front correct mode was validated by simulation
分析了變形鏡的結構特點,初步給出了變形鏡本身驅動單元數與校正量之間的制約關系;引入「二次補償」波前校正方案,解決了變形鏡校正量有限與高功率固體激光系統波前誤差起伏量大的矛盾,建立了波前校正對象優化分配、靜態校正器優化設計等細節過程所需要的方法,通過模擬模擬驗證了「二次補償」波前校正方案對于降低變形鏡校正量要求和放寬光學元件加工精度的作用; 5Optimization of the task schedule mode, which realizes a creative division on system tasks as " reserve task ", and has guaranteed the system a real - time response on the basis of " foreground / background system integration of different methods such as twice measurement ", twice seizure ", " revision online " and " revision offline " in the metering process, which enables the system to meet a high - precision requirement ( better than 2 % 0 ) at low cost
系統任務調度模式的優化調整,通過創造性的系統任務劃分,引入了「遺留任務」的概念,在「前後臺系統」的基礎上保證了系統任務響應的實時性。綜合利用了「兩次測量」 、 「兩次捕捉」 、 「在線校正」和「離線校準」等方法組織測量過程,使系統整體能夠在低成本的基礎上滿足高精度的測量需求(優於2 ) 。A new random phase - shifting correction algorithm is presented in this paper on the basis of five - step phase - shifting. it can directly solve the value of phase - shifting errors without solving phase. meanwhile, the new algorithm can greatly decrease the iteration number and calculation without depressing the measurement accuracy
本文的重點在於提出一種新的隨機相移誤差的校正演算法,在傳統五步相移的基礎上不需要求解相位分佈,通過合理的近似處理可以直接求解相移過程中存在的隨機相移誤差,在保證精度的情況下,能大大減少迭代次數和計算量。分享友人