非可調行程 的英文怎麼說

中文拼音 [fēidiàohángchéng]
非可調行程 英文
non-adjustable stroke
  • : Ⅰ名詞1 (錯誤) mistake; wrong; errors 2 (指非洲) short for africa 3 (姓氏) a surname Ⅱ動詞1 ...
  • 調 : Ⅰ動詞1 (配合得均勻合適) harmonize; suit well; fit in perfectly 2 (使配合得均勻合適) mix; adju...
  • : 行Ⅰ名詞1 (行列) line; row 2 (排行) seniority among brothers and sisters:你行幾? 我行三。where...
  • : 名詞1 (規章; 法式) rule; regulation 2 (進度; 程序) order; procedure 3 (路途; 一段路) journe...
  • 行程 : 1 (路程) route or distance of travel; distance of run; length of travel; distance travelled; jo...
  1. The thesis is based on income question, forest coverage rate and grop production. to beging with, date envelopment analysis is proved that it can be applicated into grain for green in shan - bei district, and then in view of the fact, seven esential factors which have influence on the project are found out : expense of dam, expense of crop, expense of cash tree, expense of defense tree, other economic crop, expense of grass and graziery ; and the output factors include : income of gdp, pure income per captia, the area of decreasing land loss, graziery income, crop production, income of tree, the totle income of economic crop. after the date of each facts are puted into dea model, unefficiencial decision making units ( dmu ) found. the data that are got through adjusting unefficiencial dmus dy dea can offer guide in shanbei district upgrading of an industrial structure. at the same time, taking into account some possible problems in or after grain for green in shan - bei district, the thesis bring out some propesal to improve the circ umstance, enhance the life level and put the relation of population, resource and circumstance into a healthy orbit

    因此,加快退耕還林還草,調整土地利用結構和產業結構,已成為實現山川秀美工持續發展戰略的必經之路。論文以解決陜北地區的收入問題,植被問題以及糧食產量問題為出發點,首先從理論上分析了包絡分析方法在陜北地區退耕還林(草)中運用的性,然後結合陜北地區目前的實際情況,綜合分析出影響陜北地區退耕還林(草)的關鍵的七個因素作為輸入指標:水利水保設施投入,農作物投入,經濟林種支出,防護林支出,其它經濟作物,草類支出,畜牧業投入;以退耕還林所要解決的最終問題作為輸出指標: gdp收入、農民人均純收入、水土流失減少量、牧業總產值、糧食產量、林業總產值、其他經濟作物總產值。將各指標所對應的數據代入模型后,通過分析求解得出有效的決策單元,再運用包絡分析方法的一些基本原理對有效的決策單元進調整,由此所得的數據對陜北地區的實際投入具有很好的指導意義。
  2. Study achievement appears as following aspects : ( 1 ) yellow river estuary gate river flow and tide flow mixed area is not keep standing deposition status, on special income water and sediment conditions, boundary conditions and oceanic power conditions, this area may on the scour status ; ( 2 ) observed from estuary sediment deposition distributing process : delta and sea offing area sediment deposition vary trend is similar, each part sediment deposition scale varies as wave shape ; ( 3 ) on estuary gate, affect the sediment deposition factors, primary factors are tide prop, the gate widens gradually, estuary gate have branches, brine induced flocculation. this paper study the estuary gate widen, estuary gate have branches to affect the river channel deposition in quantity ; ( 4 ) based on field measured data, for the first time, deduce the estuary sediment deposition and distributing regress formula which can estimate estuary different areas sediment deposition volume ; ( 5 ) this subject demonstrate the estuary delta coastline dynamic balance conception, build the relationship between the estuary income sediment with deposition land area, draw the following important conclusion : when estuary years - averaged income sediment keeps at 345 million tons, the delta coastline may on the dynamic balance status. ( 6 ) this subject firstly brings up estuary sediment optimized control conception, and has the primary study on the macroscopically optimized control conception method

    研究認為: ( 1 )黃河河口口門逕流潮汐區域並持續保持淤積狀態,在特定的來水來沙、邊界條件和海洋動力條件下,該區域以處于沖刷狀態; ( 2 )從河口泥沙沉積分配的過來看:三角洲與濱海區泥沙的沉積變化趨勢是基本一致的,各部位的泥沙沉積比例變化基本呈波動狀態,且三角洲與濱海區泥沙的沉積比例與來沙量密切相關,基本成正比關系; ( 3 )在口門處,影響泥沙沉淤的因素主要集中在潮汐頂托、口門逐漸加寬、河口門分汊、鹽水造成絮凝等,本報告主要對口門加寬,口門西妥理工大學工碩士專業學位論文分漢對河道淤積的影響進了定量分析: (一扣根據實測資料首次建立了河贖流路泥沙沉積分配的回歸計算式,據此以預估計算河口不同區域泥沙的沉淤量; 、 5 )本項研究首次論證了河口三角洲岸線動態平衡的概念,並建立了黃河河口來沙量與造陸面積的相關關系,得出了當河口多年平均來沙量維持在3 . 45億t時其河口三角洲岸線則能處于動態平衡狀態的重要結論; 『 6 )本項研究首次提出了河口泥沙優化調控的概念,並對其宏觀優化調控模式進了初步探討。
  3. Abstract : incompatible element nh11 and hybrid stress element 18 were employed to analyze rock burst occurring in coal face 9108 of sanhejian coal mine. compared with the results from ansys, the two optimized fems can execute more accurate numerical simulation in the research of rock burst as well as other rock problems and lessen the errors from inaedquately meshing in huge calculations due to the limitation of labor and computer time. in addition, the criterion of averaged generalized stress rate was proposed and used to determine the site and moment of rock burst. the given conclusion is in accordance with the face of coal face 9108 very well

    文摘:利用優化調元和雜交元分析了三河尖礦沖擊礦壓,並與ansys序的計算結果進了比較.認為優化有限元在沖擊礦壓乃至巖石材料的數值模擬中能給出更為精確的結果,也減小大型計算中由於人力、機時所限粗分網格產生的誤差.分析中,採用了廣義平均應力率準則來判斷沖擊點位置和沖擊時刻,所得結論與實際情況吻合
  4. Mr wong added that in devising this special security assignment, one major concern was to keep each and every operational detail absolutely confidential. all planning of the security measures was conducted in the house of the senior investigator in charge of the operation

    黃國梁透露,為了部署這個常保安任務,杜絕任何一個泄密的能性,接機過的保安措施全都在負責這次動的高級調查主任家裡策劃及部署。
  5. Comparing and analyzing the synchronous control strategy, which brings up the new method to control the double un - symmetry jars proceed synchronously with the combination of proportional valve and servo valve, which forms closed loop control ; basing on the above methods, models are made to get mathematics models of position control system and to analyze system model theoretically by using pid controller, we can realize regulating parameters, minimizing synchronous errors and enhancing the dynamic performances ; the simulink tool box in matlab software is used to imitate the system according to the model, which not only makes the result visual and easy to adjust the parameters in interactive way but also lets us understand the effects of different parameters and optimizes the dynamic properties. the theory of plc control in dshp is discussed after advanced understanding of the system movements. hardware design and general regulation are given on the base of siemens company products s7 - 200 plc

    本文根據大量的國內外文獻,對研配液壓機的工作原理及設計結構進了簡介;對位置同步的控制方法進了比較分析,提出比例閥和伺服閥復合控制的閉環結構來對對稱雙缸進同步控制電液比例同步控制方案;在此基礎上著重對比例閥控對稱缸建模,最後得到位置控制系統的總體數學模型,從理論上對同步系統動態特性進了分析,並用pid控制器進參數整定,減小雙缸同步誤差、提高系統的動態響應性能;其中控制性能的分析藉助于matlab軟體中的simulink工具箱,由已建立的數學模型形成模擬模型,得到視化的模擬結果,從而利於交互方式下調整參數,了解不同的參數對系統的影響,優化同步系統的動態性能;在深入了解系統的動作特性后,對plc控制研配液壓機的原理進了探討,針對siemens公司s7 ? 200型plc給出了硬體設計的總體規劃,編制出研配液壓機動作控製序,在編中著重研究位移傳感器與plc的通訊、雙缸同步運的pid控制在plc上的實現及bcd碼撥盤輸入序的植入問題。
  6. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault , researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system , a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows : this paper compared some existing methods in excitation control , fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 , indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which , discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations , made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations , which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations , there were several very important parameters of power system - - rotor angle ( ) , rotor speed ( ) , generator q axis voltage ( eq ) , transient voltage ( e ' q ) , active power ( pe ) , mechanical input power ( pm ) , valve opening ( ) , generator terminal voltage ( vt ) , based on the model , nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault , which achieved better postfault regulation compared with another two routine methods , one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上,詳細介紹了dfl理論,通過比較闡明了dfl理論其本質是逆系統方法的一類,並結合具體課題推導出的模型方將dfl理論進了擴展,使之適應于電力系統這個強線性對象。通過參考大量的書籍文獻推導出一套實用的將大型汽輪發電機勵磁與汽門綜合起來進控制的模型方,此模型方涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ,在此基礎上建立了實用的電力系統簡化的數學模型,並將擴展的dfl理論應用於此模型系統,結合線性二次型最優控制理論設計出大型汽輪發電機的線性綜合控制器及機端電壓最優控制器,通過模擬實驗與採用常規的按電壓偏差進調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門(考慮發電機的飽和因素)進了對比,證實了採用此種控制器以有效地提高電力系統的暫態穩定性,並且在電力系統遭受小干擾時同樣具有良好的調節性能。
  7. This dissertation majorly researchs and designs full digital dc driving system with fuzzy control. it makes a scheme argumentation firstly, analyzing the pid algorithm and fuzzy control algorithm the ordinary digital pulse trigger algorithm and the double remainder method of pulse trigger in detail, and fuzzy control and the double remainder method are put forward to settle the under - mentioned problems, namely, the new viewpoint and the task having finished in this dissertation as follows : ( 1 ) in rder to overcome the influence of dc motor ' s parameter changing with time and nonlinear on the control system performance, this dissertation adopts fuzzy control as outside regulator and pi control as inside regulator in double regulators of the full digital dc motor driving system design ;. ( 2 ) aiming at the pulse trigger reliability of the ordinary d igital pulse trigger being low and leaking the pulse or the order of pulse confusion, this paper adopts the double remainder algorithm with short response time high pulse trigger reliability good adaptability and anti - jamming ; ( 3 ) this dissertation adopts tms320lf2407 which has good performance as major control chip this chip has power function with fast calculation capability, and accomplishes the software and hardware design in the dc motor driving system with fuzzy control ; ( 4 ) this dissertation also puts emphases on anti - jamming in hardware and software ; ( 5 ) after having designed the sample of full digital dc motor driving system with fuzzy control, a lot of experiments are performed to verify the performance and settles problems during experiment. the result of experiment proves the feasibility of design

    首先進了方案論證,對模糊控制演算法和數字pid調節演算法、觸發脈沖的一般演算法和雙余演算法進了詳細地研究分析,提出應用模糊控制和雙余法解決下述問題,即該論文主要的新見解和所完成的工作: ( 1 )為了克服直流電機參數時變性和線性因素對控制性能的影響,本設計中,雙閉環調速系統的外環採用模糊控制,內環採用pi控制,使系統在一定范圍內對直流電機參數變化和線性因素影響有自適應能力; ( 2 )針對常規數字觸發器演算法中觸發脈沖的靠性不高,經常出現漏脈沖或是脈沖混亂的情況,本文採用雙余法,該演算法具有響應快,靠性高,具有良好的適應性及抗干擾能力; ( 3 )本設計中採用了速度快、功能強的tms320lf2407作為系統的主控晶元,應用該晶元完成系統的軟硬體設計: ( 4 )本文對系統抗干擾的軟硬體措施進了重點研究; ( 5 )設計了具有模糊控制的全數字直流傳動系統原理樣機,並進了試驗驗證,對試驗過中出現的問題及時解決,最終實驗結果證明設計是的。
  8. This article is based on the general rule of teachin g, and resul ts from six year ' s research in the civilian - run school. during the six y ears, i ' ve done much research work in many areas, such as the relationship between tea ching quality and students resourses, curriculum and teaching aims, texts and stud ents, overall attendence and individualized instruction, the reforming of tea ching and instruction of learrning, the effect of subject and object, the element of intelligence and non - intelligence, the knowledge instruction and the competen ce training, the knowledge in and out of the classroom, the classroom - teaching an d the after - class coach, etc. the purpose of what i have done is to seek for a ki nd of teaching principal which is fit for the rule of the economic market and mi ght be the best way for the education

    文章以教學的一般規律為據,結合作者在民辦學校的教學中進的近六年的跟蹤調查和深入考察,就民辦學校的教學質量與生源市場、課設置與培養目標、教材內容與學生實際、面向全體與因材施教、教法改革與學法指導、主導作用與主體作用、智力因素與智力因素、知識傳授與能力訓練、課內知識與課外知識、課堂教學與課外輔導等十個方面的關系作了初步探討,尋找既合乎市場經濟規律,又符合教育規律的最佳結合點,以期為民辦學校總結之有效的教學原則,提供資鑒戒的參考。
  9. The situation of yellow river dry - up is gradually rigorous. it has being influenced the development of the lower reaches of yellow river and the implement of strategy on developing the western areas. based on analyzing the harmfulness, causes of its dry - up from the factors of physical geography and human activities, this article put forward the engineering and non - engineering control measures for controlling yellow river dry - up : strenghtening the unified management and despatch for its water resource ; resorting to compulsion to save water ; quickening key projects duild for the addition of balance and water storing capacity ; increasing synthetical administer to ecological environment ; increasing effectivesupply of water resource

    黃河斷流形勢日趨嚴峻,斷流的頻率增加、時間延長、里增大,嚴重製約了黃河流域尤其是黃河下游地區的持續發展和開發大西部戰略的實施.在分析黃河斷流造成的危害、黃河斷流的自然因素和人為因素的基礎上,提出了加強黃河水資源的統一管理和調度、採取強制措施厲節約用水、加快骨幹工建設增加調蓄能力、加大流域生態環境綜合治理的力度、適時開源增加水資源的有效供給等工性和性措施,以防治黃河的斷流
  10. 3d nonlinear finite element method, compatible displacement method of different mesh and response spectrum of mode - superposition are used to analyze the intake tower - intake slope static and dynamic interaction, since the complexity of geologic structure. the rational results provide a feasible way for the similar projects analysis in the future

    論文採用三維線性有限元法、一致網格位移協調解法、振型分解反應譜法對復雜地質條件下的百色水電站進水口邊坡與進水塔的相互作用進了靜、動力分析,得出了一些合理的結論,為今後類似的工計算分析提供了一種的方法。
  11. Statistically, it makes a quantitive analysis on the evolvement of the country economic structure in xi ' an city, the economic benefit of the changes in industry structure, the effect on labor resource collacation in industry structure and the effect of the increasing income of countrymen in industry structure changes, which discloses a rule of the industry structure evolvement in country. the putting forward of the non - agriculture industry in country, especially the rapid increase in country industry will promote the rise of the country industry level for a long term. the country industry structure influences a lot the increase of the farmer ' s income which is also affected by agriculture structure and planting structure, but less. the non - agriculture industry plays a main role in the increase of farmer ' s income. for the low level of the townlization and industrialization, developing industry, construction and commercial in country is very feasible to resolve the problem of spare labors in country. it is strengthening labors transferring and reducing the modulus of labor over the infield that farmers income could be kept increasing. after a theoretical analysis and twenty years practise in the regulation of country economy structure after the reform and opening policy in xi ' an, a new thought of regulating country economy structure in xi ' an is put forward that a strategic regulation must be taken in country economy structure and the agriculture structure must be optimized. moreover, an expanding agriculture must be developed and transfer the spare labors in country effectively. so the government function during the regulation of country economy structure is transferred to : the first one, making the stress policy in the regulation of country industry structure. 2ndly, strengthening the force in regulating country industry structure ; 3rdly, making a plan on the regulation of country industry structure ; 4th promoting the optimizition and upgree of industry relying on sci - tech progress ; 5th enhancing the townlization and optimizing the country industry structure ; last one, improving the quality of labors in full scale

    本文在概述經濟結構理論的基礎上,第一次系統地研究了西安市農村經濟結構調整,用數據統計的方法,定量、定性地分析了西安市農村經濟結構演變的軌跡,分析了產業結構變動的經濟效益、產業結構勞動力資源配置效應、產業結構變動的農民收入增長效應,揭示了農村產業結構演變的規律。提出農村農產業,尤其是高速增長的農村工業,對促進農村產業水平的提升起著長?推動力的作用;農民收入增長直接受農村產業結構的影響最大,農業產業結構、種植業結構對農民收入有影響,但作用不高估;農產業是農民增收的主要支撐力量,解決農村余勞動力在城鎮化、工業化水平不高的情況下,切實的選擇是在農村發展工業、建築業、商飲業等農產業;農民收入要保持快速增長態勢必須加大農村勞動力轉移力度,減少耕地承載勞動力的系數。通過理論分析,結合西安市改革開放后20多年的農村產業結構調整的實踐,提出了西安市農村產業結構調整的發展思路及目標、原則,明確指出了政府在農村經濟結構調整過中的職能轉變的重要方面:一是制定農村產業結構調整的傾斜政策,二是加大對農村產業調整的投入力度,三是制定產業結構調整的規劃,四是依靠科技進步促進產業優化和升級,五是加快城鎮化過,優化農村產業結構。
  12. It takes a quantitative analysis to reveal the direction and intensity of tv violence and simultaneously interprets the meaning of the different indexes form the survey, which provides reliable information about tv violence in china and offers reference for the government policy - making and guidelines for the media development in the right way. what ' s more, it takes a big - scale cross - regional survey, and investigates the regional differences, media contact and the relationship between age, the degree of education and the outlooks of the audience, emphasizing the constraints of the objective reality and the differences of the individuals on the media cultivation effects, which offers a framework for later related research

    以量化形式反映電視暴力的指向和強度,同時以質化分析解釋各項指標所蘊含的意義,為了解我國電視暴力狀況提供了臆想性的靠資料,為政府有關部門的決策及媒體的良性發展提供參照:進較大規模的跨地區實證調查,考察了地區差異、媒介接觸及年齡、文化度等諸多變量與受眾觀念的關系,強調了客觀現實及受眾個體差異對媒介涵化效果的制約,為今後的相關研究提供了資借鑒的理論框架和操作平臺。
  13. With the rapid development of modern network communication technology, control technology and distributed computing technology, the distributed & open remote monitoring system based on three - tiered network architecture has been applied increasingly in many fields. railway signaling system is the essential part to protect the railway working in safety. so remote railway station signaling monitoring system ( rrssms ), which is an important part of the railway information system and play a key role to guarantee railway working with high efficiency and safety, will bring considerable benefits

    隨著網路通信技術、控制技術和分散式計算技術的飛速發展,基於三層網路體系結構的開放分散式遠監控系統開始在各各業中得到應用,鐵路站場信號系統是鐵路調度和車安全的基礎,因此,鐵路站場信號遠監控系統是信息化鐵路的重要組成部分,對于實現鐵路運輸的安全高效具有常重要的意義,以帶來很觀的經濟效益。
  14. Furthermore, by establishing and using the concept of modern enterprise ’ s marketing ethics evaluation index, a synthetic index which can be used to evaluate whether modern enterprise ’ s marketing is ethical and how ethical it is, we can evaluate marketing ethics synthetically. with the marketing basic concept “ marketing process ” and the marketing management process logic, and based on the analysis to the main exhibitions of modern enterprises ’ unethical marketing behaviors, this paper establishes the modern enterprise ’ s marketing ethics evaluation model, which consists of eight

    借鑒市場營銷學中「營銷序」這一基本概念,以營銷管理過為邏輯,同時在對現代企業營銷道德性主要表現分析的基礎上,能構建出一個包括營銷哲學道德性、營銷調研道德性、營銷戰略道德性、產品策略道德性、價格策略道德性、分銷策略道德性、促銷策略道德性和營銷管理道德性這八個營銷道德評價維度的「現代企業營銷道德指數綜合評價模型」和相應的指標體系及評價模式,並以結合一個案例對其應用進分析。
  15. This part emphasizes the synthesis of nanoarrays, aiming at controlling the size and distance of nanocrystallites using calixarene derivatives by altering the size, length and chemical structure of the organic molecules ; 2. this part emphasizes in situ synthesis strategy for fabrication of polymer network of zns based nanopowder, aiming at size controls, coating and preventing agglomeration following " one - pot " synthesis ; this method fits to low cost, large scale production ; 3. according to development in zno nanomaterials, we first report on the synthesis, characterization of amorphous zno, aiming at describing the principles and approaches of synthesis techniques, optical properties, spatial structure and doped effect ; the amorphous zno displays cage - like structure, showing a strong ultraviolet emission while the visible emission is nearly fully quenched, a potential uv - emission material ; 4

    本論文以量子結構自組裝為出發點,提出利用杯芳烴及其衍生物的化學受限反應實現尺寸調半導體納米粒子自組裝;提出有機聚合網路原位組裝zns基納米熒光粉方法,把熒光粉的納米化、包敷、防團聚在「一鍋」反應中完成,適于低成本,批量生產;根據當前zno的研究情況,我們首次合成了晶zno ,研究了它的光學性質,確定了它的結構,並對其摻雜進了初步的研究,晶zno表現出強的深紫外發光特性,而見發射常弱,是一種有巨大潛在應用價值的深紫外發光材料;利用晶zno的亞穩特性,對晶化過晶zno納米晶zno三維受限量子結構特性,界面特性進了深入的研究;利用固相熱分解一般受擴散控制特性,實現了尺寸控的zno三維量子結構的自組裝;利用晶zno的高度分散性,容易均勻成膜特性,實現了晶籽晶誘導低溫液相外延自組裝生長高取向zno晶體薄膜。
  16. When the decision is obvious, the decisions made by the job scheduler the entity moving the compute component to the node and the data mover the entity moving the data component align, and both computation and data align on the same node

    當決策常明顯時,由任務調序(將計算組件移動到節點上的實體)和數據移動序(移動數據組件的實體)所制定的決策就以進調整,計算和數據組件也以在同一節點上進調整。
  17. Through the description of limit equilibrium state and slope stability analysis by strength reduction fem, the safety factor is got, at the same time, the critical failure surface is found automatically. these conclusions testified that this method is practicable if there are detailed investigation, reasonable model and favorable software

    通過與傳統穩定性計算成果的對比分析,表明:只要調查充分,模型合理,加上良好的計算分析序,對貫通性節理巖體高邊坡的穩定性評價,有限元強度系數折減法是確切的。
  18. Considering the behaviors of unbonded prestressed concrete beams and steel reinforced concrete columns, a kind of nonconforming beam - column element was constructed and the analysis precision was improved. loading and reloading paths were introduced into the constitutive relationship of concrete. it is helpful to the analysis program to trace the full - range mechanical behavior of structures including the descending part and the hysterisis characteristic under cyclic loading

    考慮無粘結預應力混凝土梁、型鋼混凝土柱等結構構件的受力特點,構造調樑柱單元,提高了分析精度;混凝土的本構關系中,引入卸載路徑和再加載路徑,使得分析以追蹤包括下降段在內的結構全過力學為,以及反復荷載下結構的滯回特性。
  19. This thesis introduced the basic concept of the current - mode circuit and the basic theories of the filter first, then from the principle and the port characteristic of ( ccii ) the second generation current conveyor, analysis in recent years newly arisen of the current - mode filter the basic theories and domestic and international research circumstance carried on concretly, finally with the modified second generation current conveyors : the mddccii 、 fbccii 、 ftfn 、 fbftfnt and cdba etc. of the type with the

    實驗主要是利用pspice軟體對所設計的濾波器進模擬,設計過中分析了各種濾波器的中心頻率和品質因數,其中參數獨立調是這些濾波器的主要優點,另外對其靈敏度特性和部分器件的理想特性也進了分析,模擬結果都符合濾波器的設計要求。
  20. First, because pipelines are so complex that controlled object is high order, delay, coupling, nolinear and time - varing, it is difficult to realize closed loop control for it using valid mathematic model. to resolve this problem, the paper presents a fuzzy - pid control algorithm with self - adjusting regulation factor. second, if a moving motor supplied by inverter power is switched to be supplied by power supply, the impact of overload - voltage and overload - current appears

    主要針對中、大容量供水系統中,由於供水管網鋪設復雜、彎管多、控制對象具有高階、滯后、耦合、線性及參數時變的特點,難以利用有效的解析式數學模型進閉環控制,以及多臺水泵並聯運時,水泵電機由變頻電源供電向工頻電源供電切換過中產生的過電壓過電流沖擊這兩個難題,提出了調整因子fuzzy - pid控制演算法及利用鎖相環控制實現水泵電機由變頻電源向工頻電源的同頻同相平滑切換。
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