fed model 中文意思是什麼

fed model 解釋
聯邦儲備模型
  • fed : feed 的過去式及過去分詞。 upness1 過飽吃飽。2 極度厭倦。n 〈美俚，常作 F 〉聯邦調查局人員；聯邦政...
  • model : n 1 模型，雛型；原型；設計圖；模範；（畫家、雕刻家的）模特兒；樣板。2 典型，模範。3 （女服裝店僱...
  1. Based on this, through a lot of yeast, e - polylysine ferment experiments and analyzing the data, comprehend the universality rule of animalcule ferment ; advanced soft - measure model, estimate the parameter non - measurable online, including the parse model based main - regression analyze, the ann model based ann arithmetic. guide the fed - batch control and environment parameter by the optimized track. to advance the last gain, identify the fermentation phase

    在此基礎上，經多次酵母發酵實驗、聚賴氨酸發酵實驗及對大量實驗數據的分析，深入了解了微生物發酵的一般性規律；建立了微生物發酵過程的軟測量模型，對不可在線測量的生物參數進行估計，包括由主元回歸分析得到的解析式模型，由神經網路演算法得到的神經網路模型。
  2. The model and simulation of the brushless doubly - fed machine

    無刷雙饋電機的建模和模擬
  3. The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance

    通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。
  4. Based on the morphological characteristics of budding yeast, a cell cycle model during the p. pastoris fed - batch cultivation was proposed

    摘要基於芽殖酵母細胞形態的特徵，提出了畢氏酵母甘油流加發酵過程的細胞循環模型。
  5. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  6. Mathematical model of double - fed motor and applications

    雙饋電機數學模型及其應用
  7. According to federation development and execution process ( fedep ), the concept model of the distributed interactive system is developed, fom / som and fed file are created, real - time and living display is r ealized bye orrectly combining vr - link w ith t he v ision federate, synchronization simulation is carried out by independently advancing simulation time, t he s ystem 1 atency is analyzed b y t esting t he t ime characteristic of t he system

    3 . 3和vr一link3 . 6 . 1為開發環境，依照聯邦開發執行過程fedep開發出魚雷武器分佈交互模擬系統的概念模型;建立了fom / som模型並生成fed文件;解決了與三維視景聯邦成員的介面技術問題，從而實現了實體狀態的實時的、逼真的顯示;採用獨立時間推進實現了聯邦的同步模擬;對系統產生的時延特性進行了測試，分析了魚雷武器分佈交互模擬中的時延誤差問題。
  8. Secondly, to achieve the independent regulation of active and reactive power output from the generator side which is designed for the purpose of tracing the maximum wind - energy capturing. the paper has analyzed the mathematic model of the ac excited doubly - fed machine and the stator field orientation control strategy of the motor as vscf wind power generator. thirdly, it has put forward and designed the dual pwm converter with the capacity of energy flowing bidirectional aimed at the demand of rotor energy bidirectional flow. the author constructed reliable and integrated experimental system and did a series of experimental study including no - load, cutting - in network and power generation at, below and above the synchronous speed

    論文首先分析了風機運行特性及其最佳風能利用原理，通過模擬及實驗驗證了採用直流電機的輸出特性模擬風力機的最大輸出功率曲線的可行性，並給出了模擬系統的硬體結構；然後為了實現交流勵磁發電機有功、無功功率獨立調節機理，分析了交流勵磁雙饋發電機的數學模型和在追蹤最大風能捕獲變速恆頻風力發電時必需的定子磁鏈定向矢量控制策略；針對雙饋發電機轉子能量雙向流動的要求，提出並設計了具有能量雙向流動能力的雙pwm交流勵磁用變頻器；最後為實現從理論到實踐的全面研究，研製出了一套小功率完整的雙pwm變頻器交流勵磁的雙饋風力發電機實驗系統，進行了空載、並網、同步速及上、下的發電運行等一系列的運行實驗；所完成的模擬和實驗研究均驗證了理論、模型和控制策略的正確性、可行性。
  9. The model of fujian power grid and models of generators, excitation systems, governor systems and loads are established, the tested excitation system models of large hydro and thermal units, the model of wind turbine are established as well in this paper with pss / e, a new software imported from pti of u. s. a. recently. some key points are proposed on data convertion from psasp and bpa to pss / e. the transient and dynamic characteristics between separate excitation system and transformer - fed excitation ( self excitation ) system are compared with pss / e

    本文完成了pss e的福建省電力系統的基本框架以及發電機、勵磁系統、調速系統、負荷的數學模型和參數，實現了大型水、火電廠發電機組勵磁系統實測模型和風電機組的pss e建模，提出了pss e與bpa 、 psasp數據互轉的部分要點，比較了福建電力系統現有大型水、火電廠發電機組它勵與自並勵勵磁方式的動態和暫態性能的差別。
  10. Study on emulation model of the s function for double - fed electric motors

    無刷雙饋電機電動狀態下的能量分析
  11. Construction of fed - batch fermentation kinetics model of l - glutamic acid temperature - sensitive mutant by matlab

    軟體構建谷氨酸溫度敏感突變株補料分批發酵動力學模型
  12. A cellular automata model for simulating fed - batch penicillin fermentation process

    模擬青霉素分批補料發酵過程的細胞自動機模型
  13. In further research, the following issues must be considered : 1 ) the standardize of corpus ; 2 ) improve the accuracy of chinese words divided syncopation system, handle the different meanings of one word and recognize the words that do not appear in the dictionary ; 3 ) process semantic analysis ; 4 ) dynamically update the training sets fed back by the user ; 5 ) quantitatively analyze the system performance influenced by different factors, use an appropriate model to compare and evaluate the web text classification system ; 6 ) natural language process ; 7 ) distinguish the disguise of sensitive words

    在以後的工作中考慮如下問題: 1 ）數據集的標準化; 2 ）分詞系統精度的提高，對歧義處理以及未登錄詞識別的能力的提高: 3 ）進行合理的語義分析: 4 ）利用用戶反饋信息動態更新訓練集; 5 ）定t分析分類器不同要素對分類系統性能的影響，使用合適的模型來比較和評價分類系統; 6 ）自然語言理解問題，如「引用」問題; 7 ）對于敏感詞匯偽裝的識別問題。
  14. According to simplifying activated sludge process no. 1 model ( asm1 ), n - removal dynamic models in continuously mixed, continuously fed activated sludge process ( asp ) are established by employing expert experience about activated sludge process. then predictive control approach is applied to optimal control of this process. the simulation results show that it can cover the relative expert experiences more widely by applying mld to modeling and control of activated sludge process

    5 .應用mld法，對asmi模型進行簡化，建立了連續進水間歇曝氣活性污泥法除氮動態模型，通過模擬結果，可知:採用mld方法，可以充分利用有關連續進水間歇曝氣活性污泥法的專家經驗知識，加入到模型中，使模型更加精確，控制和優化的效果更好。
  15. The contributions done are as follows : according to the mathematical model of doubly fed motor and the theory of vector control, a unit power factor of rotor control scheme is proposed. in the doubly fed adjustment system, in order to control magnetic torque of motor this scheme is designed by controlling the reverse direction between rotor voltage and current to keep the vertical direction between rotor current and flux. it is known from theoretical analysis that for partly decoupling this scheme is only effective under sub - synchronization speed, but not control the system and obtain steady state since speed adjustment system ca n ' t adjust the magnitude of rotor flux under sup - synchronization

    而傳統的無速度傳感器雙饋調速矢量控制系統，由於採用磁鏈定向方法，在同步速附近存在較大的工作死區，針對上述問題，本文做了如下的研究工作：本文從雙饋電機的數學模型出發，根據矢量控制的基本原理，提出了一種轉子側功率因數為1的雙饋電機矢量控制方案的設想，即在雙饋調速時採用轉子電流定向的方法，並控制外加轉子電壓與轉子電流始終反相，以保持了轉子電流與轉子磁鏈矢量垂直，通過控制轉子電流的大小來達到控制電機電磁轉矩的要求。
  16. The problem is then fed to a nonlinear programming routine to solve for all parameters. the flight dynamics model with yawing motion of uh - 60a is given, scale factors of state variables and control variables are applied based on the consideration of algorithm convergence. then, the optimization of trajectories is expressed as optimal control problem with a performance index constrained by helicopter performance limits, faa regulation and so on

    首先，建立帶偏航運動的直升機點質量模型，然後對狀態變量和控制變量進行無量綱處理，因為狀態變量和控制變量量值相差較大，這使得優化演算法收斂效果變差，所以需要選擇適當的縮放因子，最後把直升機單臺發動機停車后的飛行軌跡表示成一個最優控制問題，即在考慮直升機性能限制和far規范后，指定一個優化性能指標，選擇合適的路徑約束，然後再解最優控制問題。
  17. Firstly, it presents the principle of vscf wind power, and compares the const - speed const - frequency ( cscf ) and vscf. also it builds the mathematic model of all section of vscf double - fed wind power generation system on two - phase synchronous rotation coordinate. secondly, the thesis gives the characteristic of torque and the steady - state analysis of vscf double - fed generator

    文中介紹了變速恆頻風力發電的原理，比較了恆速恆頻和變速恆頻的區別，給出了雙饋型變速恆頻風力發電機在二相同步旋轉坐標系下的數學模型以及風力發電系統其它各部分的數學模型。
  18. After analyzing the mathematical model of wind turbine and doubly - fed induction generator, a schematic is given about the power flow in the wind turbine and generator and a static equivalent circuit is shown as well. then, through the reference frame transform, the electromagnetic equation, dynamic equivalent circuit, and vectorgraph of doubly - fed generator can be gotten in the dq reference frame. in virtue of the general dynamic equivalent circuit, it produces a asymmetry equivalent

    本文在對風力機和雙饋電機進行了數學分析后，給出了功率在風力機和雙饋電機中的流動過程圖解，同時給出了雙饋電機的穩態等效電路；然後，經過坐標變換，進一步得出了同步坐標系下雙饋電機的基本電磁方程、功率方程、動態等效電路和綜合矢量圖，並藉助通用動態等效電路的形式，得出了便於定子磁鏈分析的不對稱等效電路。
  19. In this thesis the theory and method of intelligent fault diagnosis for a large turbo - pump fed liquid - propellant rocket engine ( lre ) is innovatively proposed and developed, based on the hybrid reasoning strategy and the hybrid knowledge models including mathematical model, logic model, graphic model and qualitative model. the theory and method are constructed in the way of intelligent modeling technique and creative application of knowledge engineering, and focus on the difficult problems and critical techniques such as the unified treatment of lre knowledge ( experience, facts, rules, graph, system structure, behavior, model knowledge and measured data ), the integration and translation of qualitative and quantitative knowledge, and the knowledge - based intelligent fault diagnosis reasoning methods. firstly, besides the correlation of different knowledge, the concept and the types of lre diagnosis knowledge are systematically described

    本文以某大型泵壓式液體火箭發動機為研究對象，以智能建模技術和知識工程的創造性應用為主要技術手段，圍繞著發動機知識（經驗、事實、規則、圖形、結構、行為、模型知識與測量數據信息等）的統一處理技術、定性定量知識的集成與轉化和基於知識的智能故障診斷推理等關鍵技術和難點，創新地研究發展了發動機基於混合知識模型（數學模型、邏輯模型、圖形模型及定性模型）和混合推理策略的智能故障診斷理論和方法。
  20. Space vector model and dq equivalent model of the brushless doubly - fed reluctance machine

    雙饋電機矢量控制變頻調速系統控制策略的研究及模擬
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