power series method 中文意思是什麼

power series method 解釋
冪級數法
  • power : n 1 力，力量；能力；體力，精力；（生理）機能；〈常 pl 〉才能。2 勢力，權力，權限；威力；政權；權...
  • series : n 〈sing pl 〉1 連續；系列。2 套；輯；叢刊；叢書。3 【生物學】區；族。4 【植物；植物學】輪；列；...
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. According to the quickly adjustable characteristic of the peterson coil grounding system, this dissertation proposes a new control strategy. when the system is in operation, the strategy can limit the series resonance over - voltage by using the off - resonance method. when fault occurs, the strategy can conveniently suppressing arc by rapidly adjusting the inductance value of the peterson coil to the point, which the resonance with grounding capacitance of the power network is occurred

    依據可控硅控制消弧線圈接地系統的快速可控性，一改傳統的電網正常運行時調節消弧線圈接近於全補償的預調諧方法，提出正常運行時採用脫諧方法抑制串聯諧振過電壓；故障時立即調節消弧線圈電感量達到與對地電容諧振，以利熄弧的新型調節原理和方法。
  2. For a class of series - wound active power line conditioner the design approach law of a new fuzzy integral sliding mode variable structure control is presented. this method adjusts power electronic switch in order to achieve anticipated balance volt, finally makes active power line conditioner not only possess good robustness of variable - structure control and decrease vibration to the most but also increase the steady state precision. series - wound aplc adopted this control method possesses good dynamic and steady state performance

    針對串聯型有源電網調節器運用變結構控制策略，調節電力電子開關模式，以獲得預期的平衡電壓，對串聯型有源電網調節器提出了模糊積分變結構控制方法，使串聯型有源電網調節器既保持了常規滑模控制強魯棒性的優點，又減弱了滑模控制的抖振，提高了系統的穩態精度，使系統具有良好的動態和靜態性能，模擬試驗表明該控制策略是一種十分有效的控制方法。
  3. Firstly. operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized. then, the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit. in this part, operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant. moreover. the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well

    文中首先介紹了感應加熱電源的工作原理並綜述了國內外的研究現狀。接下來分析並制定了電源主電路的構成方案：在對比幾種功率調節方式的基礎上選擇了不控整流加斬波調壓作為直流部分。在這部分里，重點研究了一種軟開關buck變換器，通過分析各階段的工作原理說明了開關器件如何工作在軟開關狀態；對于逆變器部分，在比較了串、並聯逆變器優缺點的基礎上選擇了串聯諧振逆變器，並詳細分析了串聯逆變器的工作原理，提出了最佳死區的計算方法。
  4. Aesthetic appearance is one of the most important criteria used by consumers in judging clothing wear performance. bagging is a kind of three - dimensional residual deformation that deteriorates garment appearance during wear and caused dissatisfaction. to understand the psychophysical mechanisms of fabric bagging perception, a method of subjectively evaluating this behavior is developed by using a series of photographs taken from bagged fabric samples. both ranking and rating scales are used as the psychological scales. the two scales are highly correlated with each other, but the rating scale provides more information than the ranking scales and can indicate perceived differences between fabrics. a linear relationship between subjective perceptions and measured residual bagging height shows that perception of fabric bagging follows stevens ? power law. residual bagging height contributes up to 94 % of the total variance in the perception of fabric bagging. the rest of the variation may be attributed to anistropic behavior during the bagging process

    美觀是消費者日常服裝穿著功能中最重要的指標之一.起拱是一種外衣穿著中引起變化，令人不滿的三維殘余變形.一種主觀評價方法是從一系列起拱織物的照片來理解心理物理學規律，採用優劣排序等級和優劣評判等級兩種方法用於心理評價標度.這兩種等級互相間緊密相關，但評判等級比排序等級包含更多的信息，可以更好地區分出兩種織物間的差異.主觀評價結果與測量得到的殘余起拱高度之間線性相關，表明了織物起拱特性符合斯特藩指數定律.殘余起拱高度對織物起拱特性總方差的貢獻在94 %以上.其它可能是起拱時各向異性因素引起的
  5. Pass the interlace series type linear differential equation that coefficient contains power function and arrangement number change into the linear differential equation of successive integral, have found out the theory and method that begs this kind of equation to know to untie. theorem have happened have given strict proof, and through example, have introduced it ' s application

    摘要通過把系數含有冪函數與排列數的交錯級數型線性微分方程化為可逐次積分的線性微分方程，找出了求這類方程通解的方法與理論，把所得定理給出了嚴格的證明，並通過實例介紹了它的應用。
  6. With significant development of power construction, the scale of power system is becoming much bigger and the structure more complicated, which leads to more difficult calculation and analysis concerned with power system. and the current software was limited by past development environment, resulting in a series of problems such as unfriendly man - machine interfaces, inconvenience of data inputting and management and not - easy - grasp using method

    隨著電力建設的發展，電力系統的規模越來越大，結構也越來越復雜，電力系統計算分析的工作量也日趨龐大，而現有的計算軟體由於受當時的開發環境所限，普遍存在著人機界面不友好、數據錄入及管理不方便、使用方法不易掌握等缺點。
  7. Method for solving finite summation of k steps arithmetic progression by using power series

    階等差數列有限和的冪級數求法
  8. We can solve it with the power-series method if we want.

    如果願意的話，我們也可用冪級數法解題。
  9. And these papers analyze and study the method ' s application in the i / a series dcs control system in panxian power plants. devised coupling precepts and communicate precepts about graded fuzzy controller in the i / a series dcs. it can gain favorable control effect by annalyzing control function and improve the economy and security of the pulverizing system

    本文對分級模糊控制在盤縣電廠200mw機組i / aseriesdcs集散控制系統中的應用進行了分析和研究，設計了分級模糊控制器在i / aseriesdcs上的掛接方案和通訊方案，並通過對控制功能的分析能夠得到良好的控制效果，能夠提高制粉系統運行的經濟性和安全性，有著良好的工程應用前景和價值。
  10. The research achievements are as followed : studying the shortages and the improved methods of gm ( 1, 1 ) grey prediction model, considering the characteristic of the transformer chromatographic data, bring forward the method for converting a series of data which are sampled in different interval into a series of data in the same interval. the weakening operator is applied to reconstruct the transformer chromatographic data for attenuating or eliminating the influence of randomicity. the improved prediction model for power transformer interior fault is constructeded

    主要取得了以下研究成果：通過對gm （ 1 ， 1 ）灰色預測模型的缺陷及其改進方法的深入研究，針對變壓器色譜數據序列的特有規律，提出了原始非等間距色譜數據序列的等間距處理方法，運用弱化運算元改造原始序列，淡化或消除原始色譜數據序列由於受各種隨機因素影響所具有的隨機性，給出了適用范圍更廣的變壓器內部故障改進灰色預測模型的建模方法。
  11. Abstract : a relatively direct method is expounded in this paper to prove the termwise differentiation of power series, and a simple method is expressed to calculate the fourier coefficient

    文摘:用比較直接的方法證明冪級數的和函數在收斂域內可以逐項微分的公式；並得到了計算傅立葉系數的一種簡便方法
  12. Axial - flow ventilation fan is applicable to canging air ordissipating hear at such places as metal lurgical factory, steel rolling mill, chemical plant, refrigerating chamber, restaurant, grain depot, cultivating field, tunnel, storehousr, residence, ect. while removed the shell, it in the long echaust pipe with series connection method. the fan has complex structure, low noise, wide power selective range

    72型離心通風機可作為工三及大型建築的室內通風換氣，還可作輸入氣體，輸送空氣或其它不自燃的對人體無害的，對鋼鐵材料無腐蝕性的氣體，氣體溫度不得超過80 。
  13. Chapter 2 compares the differences of the current - fed converter and the voltage - fed converter used in induction heating power, then induces the power regulation methods of the series resonant inverter and compares the characteristic of these methods. and then, a capacitive pwm & pfm control method which is suitable for medium and small power out induction heating is given

    第二章對感應加熱電源中的電流型逆變器和電壓型逆變器作了比較分析，歸納了串聯諧振逆變器幾種常用的調功方法，對這幾種控制方法的優缺點進行了比較，提出了適用於中小功率感應加熱的容性pwm & pfm控制方法。
  14. According to the definition of matrix power series and the convergence property of the power series, using the type compare method, the thesis got and verified part convergence properties of the matrix power series

    摘要根據矩陣冪級數的定義和數學分析中冪級數的收斂性質，運用類比的推理法，得到並驗證了矩陣冪級數的部分相應的收斂性質。
  15. The device can measure reactive parameters in distribution power net which are generally considered to he difficultly measured the paper also introduces the calculating method of the reactive compensation capacity and its optimal location, the design method and realization principle of the series devices, such as the reactive power acquisition device, the reactive power optimized controller and the compensation capacitor operator, is seated in detail through economic and technical comparison, a realistic hardware scheme of reactive power compensation system is proposed

    文章利用電磁感應原理和數字通訊技術結合試驗設計出電源自給式高壓線路無線信號採集裝置，解決了配電網分支線路無功參數不易測量的問題。文章還介紹了系統無功補償容量及安裝位置的計算方法，較為具體的講述了無功功率採集器、無功優化控制器以及補償電容操作器等一系列裝置的設計方法和製作原理。通過經濟技術比較提出了一整套切實可行的無功補償系統硬體製作方案。
  16. Abstract : the new type mineral sizer possesses many distinctive a dvantages, but there is no perfect theory about it. this paper deduces the method for calculating power consumption of a new type mineral sizer from theoretical a nd experimental study. it offers reasonable and reliable theoretical foundation f or the design and a series of developments of the new type mineral sizer

    文摘:通過對新型1250雙齒輥破碎機樣機實際運行情況的分析，推導出新型雙齒輥破碎機破碎功耗計算公式，同時在模擬破碎機上進行了實驗驗證，為新型雙齒輥破碎機的設計及系列開發提供了合理、可靠的理論依據。
  17. The control method of ultra - audio - frequency series resonant induction heating power supply is mainly researched in this paper

    本文主要研究超音頻串聯諧振式感應加熱電源的控制方法。
  18. After the analysis of power produce character of the typical three - phases unbalance load, the corresponding circuit is adopted. this main circuit is composed of the power filter series and tcr control circuit. secondly the theory of band - pass filter is analyzed in detail, and then a method of implementing butterworth band - pass filter is put forward

    簡要分析了無功補償的基本原理和工作特點，通過對典型的三相不平衡負載工作特點的分析，主電路採用電力濾波器與晶閘管控制電抗器相接合的結構；對用於無功檢測的帶通濾波器進行了分析，設計了用於負載電壓、電流信號濾波的帶通濾波器，並採用運算放大器加以實現。
  19. The marketing risk management is the effective method of keeping away and controlling marketing risk, the electric power marketing also has the question of marketing risk management ; the electric power marketing risk management contains the risk recognition, the risk estimation, the risk control and processing, the evaluation of risk management effectiveness and so on a series of activities ; the marketing inspection is important content and the effective way of electric power marketing risk management ; the method of electric power marketing inspection persevering condition inspection and the special inspection, the habit inspection is most essential and the most effective method

    摘要營銷風險管理是有效防範和控制營銷風險的手段，電力營銷同樣存在營銷風險管理問題；電力營銷風險管理包含風險識別、風險估測、風險控制與處理、風險管理效果評價等一系列活動；營銷稽查是電力營銷風險管理的重要內容和有效途徑；電力營銷稽查的方法有常態稽查和專項稽查，常態稽查是最基本、最有效的方法。
  20. Parameter method was adopted to generate time series conforming to the specified power spectrum. a autoregressive model was estimated by program which based upon yule - walker equation. good agreement was obtained between the simulated spectrum and the target spectrum

    本文利用ar參數模型方法根據陣風功率譜模擬產生相應的風速時間序列，編寫了相應的matlab模擬程序，並計算得到了ar模型的參數，結果表明模擬信號的功率譜與原始譜比較一致。
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