demand-capacity control 中文意思是什麼
demand-capacity control
解釋
需求容量控制-
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。 -
So the methods of design and computing about limit condition of bearing capacity is still adopted in present criterion. under the precondition of meeting the demand of construction ' s using function, the main content that is researched in this article is how to make the scheme of mixed soil - cement piles composite ground on the safe side economical and reasonable, according to the rule of the design for deformation control the article, which is based on formers " theory and practice, combining with the example of engineering, utilizing the tool of matlab. 5. 0, using optimizing by plural modality method, makes a primary discussion on the design parameter of the scheme for mixed soil - cement piles composite ground, according to the rule of the design for settlement controlment method
在現行規范中仍然採用的是承載力極限狀態設計計算方法。在滿足建築物使用功能要求的前提下，如何按照變形控制設計的原則，使得水泥土攪拌樁復合地基方案更加安全可靠、經濟合理，是本文研究的主要內容。本文在總結前人的理論和實踐成果的基礎上，結合工程實例，利用matlab . 5 . 0工具，採用復形調優法，按沉降控制設計原則，對水泥土攪拌樁復合地基方案設計參數的優化進行了初步的探討，得出了一些有益的結論，對工程實踐具有一定的指導意義。 -
There are many plants that have the character of time - varying, large delay, large inertia in the process of production of modern power station such as the superheated steam temperature, the reheated steam temperature, the water treatment of boiler and the load regulation. some of them have the strong character of nonlinear and some of them are multivariable coupling systems it is very difficult to obtain good effect of control by conventional pid control. it is necessary to set up the mathematics models of controlled plants if applying control means of modern control theory such as self - adaptive control, optimal control ， decoupling control and predictive control. and these control systems have large calculation and bad character of real time in general. these disadvantages make them be not able to meet the need of real production process and limit the application of them in modern power station. now the generator units are developing towards large capacity and high parameters. many new kinds of generating electricity means are coming into being. the characers of production units of power station become more and more complex but the demand to quality of control becomes more and more strict. the new control means are in bad need to control them effectively
現代電站的生產過程中存在過熱汽溫、再熱汽溫、鍋爐水處理、負荷調節等許多大遲延、大滯后、特性時變的對象，它們中有些還是具有強非線性特性的對象或多變量耦合系統，採用常規的pid控制手段很難取得良好的控制效果。若應用現代控制理論中的自適應控制、最優控制、解耦控制、預測控制等控制手段，則需要建立被控對象的數學模型，而且往往控制系統的計算量大、實時性差。這些缺點使其很難滿足實際生產過程的需要從而極大地限制了其在現代電站中的應用。 -
From a power perspective, emerson is a leading supplier of control systems for fossil, nuclear and alternative energy power generating facilities, with control systems installed in plants representing roughly 300, 000 mw of generating capacity, which is equivalent to 40 percent of average peak demand in the united states
從電力的角度來看，艾默生是原油、核能和可轉化能源發電廠控制系統的領先供應商，其安裝在電廠的控制系統佔了大約30萬兆瓦的發電量，相當於美國平均高峰用電需求的40 % 。 -
Aiming at the controlling to production of beer with general meters in many beer factories of our country, there ' re many disadvantages in such production process. it ca n ' t ensure the veracity of beer ' s producing craft, results into fluctuation of beer ' s quality, difficult to enlarge reproduction scale, and so on. accordingly, we bring forward technique of computer monitoring and controlling, it adopts ipc - plc distributed control system, associates with concentrated control and data management, meets the demand of modern production, furthermore, improves enterprise ' s technical level, management and competition capacity in market
針對我國大部分啤酒生產廠家仍然採用常規儀表進行控制，難以保證生產工藝的正確執行，使啤酒質量不穩定，波動性大且不利於擴大再生產規模的缺點，對啤酒生產的發酵工序提出計算機監控技術，採用ipc ? plcdcs系統，使啤酒生產集控制與數據管理於一身，能夠適應當前現代化生產的需求，使企業的技術進步，生產管理以及市場競爭能力達到一個全新的水平。 -
Supply chain management asks company to pay attention to the stock coatrol of the entire supply chain but not only to the stock control of itself, lessen the demand magnifying phenomenon as possible, establish the strategic partnerships with the supply chain companies, implement the information pooling and coordinated operation ; in order to improve of the service capacity and the reduce of the stock cost, ultimately realize the win - win of the companies. based on the idea of supply chain management, management schools at home and abroad made wide and deep research on the inventory management, and procured many new achievements, and further more the practically application of which in companies acquired preferable effect
針對業務過程的工作流管理，要求企業從傳統的只注重自身的庫存控制轉向注重整個供應鏈的庫存控制，盡量減少需求放大現象，建立供應鏈上企業的戰略聯盟關系，實現信息共享和協同作業，通過整個供應鏈服務水平的提升和庫存成本的降低，實現供應鏈上企業的共贏，進而實現供應鏈上各節點企業的客戶響應水平的提升和運營成本的降低。 -
Demand - capacity control
需求容量控制 -
The article builds up a new model of industrial safety evaluation so as to examine industrial safety as comprehensive as possible, by taking account of three evaluation aspects ( industrial domestic environment, industrial competitiveness, industrial control superiority ), six influential factors ( government ' s regulating and planning the environment, market environment, efficiency, industrial limitations, country - specific concentration ), and nine influential elements ( government administrative capacity, industrial soft environment, financial environment, productive element environment, market demand, industrial performance, industrial structure, foreign - funded industry, country - specific concentration of foreign capital )
摘要本文通過產業國內環境評價、產業競爭力評價、產業控制力評價三個方面，政府規制環境、市場環境、績效、結構、產業受近代狀況、國別集中度等六大影響因素，藉助于政府行政能力、產業軟環境、金融環境、生產要素環境、市場需要、產業績效、產業結構、外資產業控制、外資國別集中度等九個影響因子，建立起新的產業安全評估模型，盡可能全面地考察產業安全狀況。 -
To validate the performance of the system, a series of experiments are made on a 200mw unit simulator of max1000 dcs. the results of these experiments indicate : by following certain physical principles, for each real component of the control system, the mathematical model which is constructed to reveal its characteristics reflects exactly the work and message transfer process ; by considering the load demand to the unit and the electricity net ' s frequency difference, also combing with the real capacity that the unit can stand, the ccs and deh models, which are contrived by using simulation blocks, can exactly harmonize the control of the turbine and the boiler and can also control the load.
為驗證模型的性能，本文在基於max1000dcs系統的200mw機組模擬機上進行對建立的控制系統模型進行了一系列模擬試驗，試驗結果表明對控制系統的每一實際組件按照一定的物理規律所建立的反映其功能特性的數學模型，正確地反映了其工作過程及信息傳遞過程；利用模擬模塊開發的協調控制系統及功頻電液控制系統模型能夠根據對機組的各種負荷要求和電網的頻率偏差，結合機組所能承擔負荷的實際能力，正確地協調對汽輪機和鍋爐的控制，並對負荷加以控制。
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