第一篇：專業(yè)英語期末考試 3

專業(yè)外語期末考核

班級：11級電氣工程及其自動化2班

姓名：李謙

學(xué)號：P11201440Translate the following paragraphs into English.(50 points)

在能源利用方面，大功率并網(wǎng)型風(fēng)力發(fā)電是目前高效利用風(fēng)能的主要方式。并網(wǎng)型風(fēng)力發(fā)電系統(tǒng)的作用是將不斷變化的風(fēng)能通過風(fēng)輪機(jī)轉(zhuǎn)換成機(jī)械能，再通過發(fā)電機(jī)將機(jī)械能轉(zhuǎn)換成電能，最后并入電網(wǎng)。由于帶有增速齒輪箱的定速恒頻風(fēng)電機(jī)組具有運(yùn)行效率低、噪聲及機(jī)械損耗大等缺點(diǎn)，已不能適應(yīng)時(shí)代的需要。因此，能夠在額定風(fēng)速下跟蹤風(fēng)能最大功率點(diǎn)的大功率直驅(qū)并網(wǎng)型風(fēng)電技術(shù)已成為目前的研究的熱點(diǎn)之一。基于上述原因，本文對直驅(qū)式并網(wǎng)變流電路的拓?fù)浣Y(jié)構(gòu)以及控制方式進(jìn)行了研究。

本文首先對風(fēng)力發(fā)電的現(xiàn)狀以及前景展望作了簡要的介紹，并對風(fēng)力發(fā)電并網(wǎng)方式作了詳細(xì)的分析，總結(jié)了直驅(qū)式風(fēng)電系統(tǒng)的優(yōu)越性。然后，介紹了直驅(qū)式各種變流電路及其優(yōu)缺點(diǎn)，并對永磁同步直驅(qū)型風(fēng)電系統(tǒng)做出了詳細(xì)的分析。在比較各種變流電路并考慮現(xiàn)有的開關(guān)器件的功率水平的基礎(chǔ)上，研究了適合直驅(qū)并網(wǎng)要求的變流電路的拓?fù)浣Y(jié)構(gòu)，即采用三相不控整流、三個并聯(lián)的Boost升壓電路以及兩個并聯(lián)的三相SPWM(Sinusoidal Pulse Width Modulation)逆變器的拓?fù)浣Y(jié)構(gòu)，并描述了永磁直驅(qū)式風(fēng)力發(fā)電系統(tǒng)的數(shù)學(xué)模型。其次，對變流電路的結(jié)構(gòu)進(jìn)行了說明，并對變流電路的各個部分的工作原理進(jìn)行了分析。在升壓斬波環(huán)節(jié)中，對采用三個并聯(lián)的升壓斬波器的工作原理以及最優(yōu)的控制方法進(jìn)行了研究。在逆變環(huán)節(jié)中，對采用兩個并聯(lián)的電壓源SPWM逆變器的工作原理以及可以使用的直接電流和間接電流兩種控制方法進(jìn)行了詳細(xì)的分析，針對其優(yōu)缺點(diǎn)以及對環(huán)流和諧波的抑制能力進(jìn)行了詳細(xì)的比較，得出適合本文研究的逆變器的控制方法。最后，參考已有的變流器的數(shù)學(xué)模型和所計(jì)算的數(shù)據(jù)，借助MATLAB7.0/ Simulink環(huán)境，對直接電流控制的變流電路進(jìn)行仿真分析。

論文從系統(tǒng)的安全性、可靠性的角度出發(fā)，對并網(wǎng)過程中可能出現(xiàn)的問題進(jìn)行針對性研究。從仿真結(jié)果上可以看出，直接電流控制方法不僅在動態(tài)響應(yīng)、抗干擾能力以及在抑制并聯(lián)逆變器上所出現(xiàn)的環(huán)流和諧波問題上都有明顯的優(yōu)越性。采用直接電流控制方法能夠很好的實(shí)現(xiàn)文中所提出的變流方案，是最佳的控制方法。并網(wǎng)型風(fēng)力發(fā)電系統(tǒng)中的變流電路以及控制方法具有很好的研究價(jià)值，值得繼續(xù)深入研究與廣泛應(yīng)用。

翻譯：

In terms of energy use, high power grid connected wind power is currently the main way of wind energy utilization efficiency.The grid connected wind power generation system is the role of the changing wind energy by wind turbines into mechanical energy, and then convert mechanical energy into electrical energy by a generator, and finally into the grid.Because of constant speed constant frequency

wind turbine with a gearbox has the disadvantages of low efficiency, noise and mechanical loss, has not been able to meet the needs of the times.Therefore, capable of tracking the maximal power point of wind power at rated wind speed direct driven grid connected wind power technology has become one of the hot spots in the present study.Based on the above reasons, this paper studied the topology of converter circuit direct driven grid and control method.Firstly, the status of wind power and prospect are briefly introduced, and the wind power grid connected mode has made the detailed analysis, summarizes the advantages of direct drive wind power system.Then, introduces the converter and the advantages and disadvantages of direct drive type, and the direct driven permanent magnet synchronous wind power system is analyzed in detail.In comparing the various converter circuit and power switching devices based on the existing research, the suitable topology circuit of grid connected direct drive requirements change, namely the three-phase uncontrolled rectifier, Boost boost circuit of three parallel and the two parallel three-phase SPWM(Sinusoidal Pulse Width Modulation)topology inverter, and describes the mathematical model of permanent magnetic direct drive wind power system.Secondly, the structure of variable flow circuit are described, and the working principle of each part of the circuit is analyzed.In the boost chopper in the link, the working principle of boost chopper on the three parallel and optimal control method are studied.In the inverter, the working principle of voltage source SPWM inverter based on two parallel and direct current can be used and the indirect current control method of two were analyzed in detail, and compares their advantages and disadvantages as well as the circulation and harmonic suppression and compares the inverter, control method for the research the.Finally, reference of the existing converter mathematical model and the calculated data, with the help of MATLAB7.0/ Simulink, direct current control of the converter circuit simulation analysis.From the safety, the reliability of the system point of view, the possible problems in the process of grid for research.From the simulation results can be seen, the direct current control method is not only the harmony in the circulation dynamic response, anti-interference ability and which appears in the inhibition of parallel inverter on the wave problems have obvious advantages.The direct current control method can realize the variable flow scheme, is the best method of control.The grid connected wind power generation system in the converter circuit and the control method has a good research value, is worthy of further research and application.Writing(50 points)

Directions: For this part, you are asked to write an abstract entitled with Study on Wind Energy.You should write at least 120 words and you should base your abstract on the outline below:

1.The characteristics of wind energy

2.Analyze wind power system.Discussion about wind power generationIn the 21st century, people most pay attention to environmental protection.Because people abuse the earth's resources, caused the natural disasters in the world, so humans began to recycle, to protect the ecological environment.The wind is a kind of new energy with great potential, in the eighteenth century, a strong wind swept through England and France, destroyed many houses and trees.The wind in a few seconds sent a ten million-horsepower power.By some estimates, the earth can be used to power about 10 billion kilowatt wind resources, is now almost 10 times of the world's hydropower generation.The world energy gained by the burning of coal each year, only the wind energy provided by a third in a year.Therefore, paid great attention at home and abroad to use wind to generate electricity, the development of new sources of energy.Wind energy resources are rich, the other is field area need to reach a certain scale, in order to have enough venue layout fan.Wind power, of course, also has many shortcomings.Power generation will produce noise and visual pollution, affect the surrounding residents normal rest;Also take up large areas of land;And is not stable, controllable;Now cost is still high;Finally affect birds flying.As a new energy in the 21st century, has been a large number of development of wind power at home and abroad.Despite the high cost of wind power generation, but people in order to environmental protection, the use of

clean energy.It seems that wind power is how environmental protection!

第二篇：專業(yè)英語期末考試試卷

2014年上學(xué)期專業(yè)英語期末考試試卷

一.Referring to the terms listed in the left column,place the appropriate letter next to the corresponding description.(12＇)

a.Assets1.inflows of assets

b.Owners’Equity2.net income

c.Revenues3.probable future benefits

d.Liabilities4.outflows of assets

e.Expenses5.net assets

f.Net Earnings6.probable future sacrifices

二．Choose the Best Answer for Each Item Below(15＇)

1.Which of the following concepts belongs to accounting assumption?

a.Conservatismb.Consistencyc.Materialityd.Money measurement

2.Which of the following groups uses accounting information for planning a company’s profitability and liquidity?

a.Managementb.Creditorc.Investorsd.Corporation

3.A credit is on the right-hand side of_______.a.an assets account only

b.a liability account only

c.an owner’s equity account only

d.all accounts

4.A purchase of office equipment on credit requires a credit to _________.a.Plant and Equipmentb.Cashc.Equipment Expensed.Account Payable

5.A sale is made on June 1 for $200 on terms of 2/10,n/30 on which a sale return of $50 is granted on June 7.The dollar amount received for payment in full on June 9 is ________.a.$200b.$150c.$147d.$144

三.Translate the Following English into Chinese（25’）

1.Assets are economic resources, which are owned by a business and are expected to benefit future operations.Assets may have definite physical form such as buildings, machinery, or merchandise.On the other hand, some assets exist not in physical or rights;examples are amounts due from customers, investments in government bonds, and patent rights.（10’）

2.The individuals most dependent upon and most involved with end products of accounting are those who are charged with the responsibility for directing the

operations of enterprises.（7’）

3.The principal statements, together with supplementary statements and schedules, present much of the basic information needed to make sound economic decisions regarding business enterprises.(8’)

四.Translate the Following Chinese into English（32’）

1.貨幣資金2.商業(yè)承兌匯票

3.股票投資

4.未確認(rèn)融資費(fèi)用

5.基金

6.存貨跌價(jià)準(zhǔn)備

7.營運(yùn)資本

8.通用對外財(cái)務(wù)報(bào)告

五、Complete the sentences.(16’)

1.An ________is the basic storage unit for data in a counting.2.The book or file, which contains all or groups of the company’s accounts, is called a ________.3.When someone invests in his or her own company, the amount of the investment is recorded in a _______ account.4.The balance of an_____ can be found in the general ledger.

第三篇：期末考試1答案(印刷工程專業(yè)英語)

學(xué)期期末印刷專業(yè)英語科目08 級第 三

試卷答案（A卷）

考試專業(yè)：/ 圖文信息處理年級/班級： 08級 印刷技術(shù)

出題教師： 海澤洫出題時(shí)間：年月20106 1日 做答教師： 海澤洫做答時(shí)間：年 6月2010 1日 一．

英文單詞翻譯

18.色彩校正 19.分色 20.排版工 21.反差 22.控制條 23.費(fèi)用支出 24.裁切 25.潤濕系統(tǒng) 26.密度計(jì) 27.設(shè)計(jì) 28.顯影劑 29.模切 30.數(shù)字印刷 31.網(wǎng)點(diǎn)增大 32.干燥系統(tǒng) 33.編輯 34.靜電復(fù)印

35.估價(jià) 36.絲網(wǎng)處理 37.文檔格式 38.膠片 39.負(fù)片 40.正片 41.濾色片 42.壓凸 43.折頁 44.水斗溶液 45.配頁 46.重影 47.印刷工業(yè) 48.凹版 49.灰平衡 50.灰梯尺

1.活化劑 2.加色 3.畫家 4.定位 5.平衡 6.基本重量 7.表格 8.裝訂 9.橡皮布 10.滾筒 11.亮度 12.壓光 13.照相機(jī) 14.連續(xù)調(diào) 15.印版，圖像載體 16.字符 17.上光

二． 中文單詞翻譯

18.Lamination 19.Laser 20.Layout 21.Letter form 22.Letterpress 23.Light source 24.Line copy

25.Lithographic process 26.Management 27.Market analysis 28.Mass 29.Mesh count 30.Middle-tone 31.Modifier 32.Negative 33.Non-image area 34.Off color

35.Offset 36.Overlays 37.Paper 38.Papermaking 39.Newsprint 40.Percent dot size 41.Paleographic printing 42.Postscript 43.Printing system 44.Processing 45.Proof

46.Reflection copy 47.Separation 48.Strike-through 49.Substrate 50.Subtractive

colors

primary

1.halftone screen 2.hard copy3.hardware 4.highlight 5.illumination 6.illustration 7.blanket cylinder 8.impression cylinder 9.perfecting press 10.plate cylinder 11.ink 12.drying 13.inking 14.intaglio printing 15.job planning 16.Kelvin 17.Keyboard 三．

英文短文翻譯

1.印刷在其他工業(yè)的產(chǎn)品中葉起了重要作用，例如，紡織品、墻紙、牙膏皮、飲料罐、糖紙、橘子和棒球都帶有印刷的圖像，甚至用于電器如電子計(jì)算機(jī)和電視的電路板也是印刷的。2.印前和印刷工業(yè)數(shù)碼流程的出現(xiàn)，使所有相關(guān)的設(shè)備正經(jīng)歷著迅速的變革。盡管已經(jīng)記述

了許多有關(guān)影響供工藝過程輸出方面的發(fā)展情況，然而在輸入方面也同樣發(fā)生了奇跡般的變化。數(shù)字相機(jī)和掃描儀已經(jīng)成為流行使用的影像輸入設(shè)備并且將很快完全代替老一代設(shè)備。

3.用平的表面印刷稱為平版印刷，也叫照相膠版印刷。這種印刷方法基于油水不相容原理。

平版印刷使用的圖文載體即印版稱作平版印版。平面印版可以用薄紙、塑料或金屬制成。這些印版的圖文區(qū)域都是親油斥水的，他們吸收油基印墨并且排斥水分；非圖文區(qū)域親水而斥油，他們吸收灰分卻排斥油墨。

4.你對印刷行業(yè)的某一項(xiàng)職業(yè)感興趣么？和你的父母商量商量，和你的導(dǎo)師及印刷專業(yè)教師

討論一下你的打算。也可以與在印刷行業(yè)工作的人談?wù)?。你可以通過當(dāng)?shù)氐囊蛩毓I(yè)協(xié)會，印刷技術(shù)人員俱樂部、膠印俱樂部與他們接觸，這些單位都列在電話號碼本黃頁上的“協(xié)

會”欄目中。四．

中文短文翻譯

1.Paleographic printing is based on the principle that grease and water do not mix.The process

works this way.First, a greasy image is place on a flat plate.The image may be drawn directly on the plate with a grease pencil.Next, water is applied to the plate.The water will cover the non-image area of the plate.Tater will be repelled from the image area because water and grease do not mix.The entire plate is then coated with ink.Ink is a greasy substance and adheres to the greasy image.Ink is repelled from the wet areas of the plate because water and grease do not mix.2.Writing is an essential part of graphic communications.It enabled our ancestors to communicate

with others without the need for direct contact.Writing allowed them to record their history, their art, their science, their knowledge and their skills.It allowed our ancestors to communicate with future generations.To advance the communications process, limitations had to be overcome.Ways had to be found for reproducing several copies of a message without having to rewrite tht message each time.Writing and printing materials, such as inks, had to be invented and developed.3.With the advent of digital workflow in prepress and graphic communications industry, all the

associated devices are undergoing a rapid evolution.And although much has been written about the impact that this has had on the output side of the process, dramatic changes are occurring on the input side as well.Digital cameras and scanners have become the popular image input devices and will completely replace those of old generation very soon.4.A beam of white light passed through a glass results in a rainbow of color.This is because white

light is really a mixture of all the colors of light.Each color refracts or bends differently as it enters and leaves the prism.Three colors of light, red, blue, and green, can be used to reproduce white light.Where all three colors of light overlap, white is produced.Red, blue, and green are called additive primary colors because added together they form white light.5.Most printing inks consist of pigments, vehicles, and modifiers.Pigment is the ingredient that

provides the color of the ink.Many pigment colors are produced from rocks and clays.Others can be traced to plants, sea life, or even insects.Several pigments may be blended together to obtain a desired color ink.

第四篇：浙江科技學(xué)院自動化專業(yè)英語期末考試1

An energy source(a primary or secondary cell, a generator, and the like)convertschemical mechanical,thermal or some other form of energy into electric energy.An energy

converter, also called load(such as a lamp, heating appliance, or electric motor), converts electric energy into light，heat mechanical work，and so on.電源（如原生電池、再生電池和發(fā)電機(jī)等）將化學(xué)能、熱能或其他形式的能量轉(zhuǎn)換城電能。能量轉(zhuǎn)換器（也稱作負(fù)載，比如燈泡、取暖器及發(fā)電機(jī)等）將電能轉(zhuǎn)換成光、熱和機(jī)械等能量

AC.circuit analysis involves the addition of harmonic time functions having the same

frequencies but different peak values and epoch angles.Direct addition of such functions.Would call for unwieldy trigonometric transformations.Simpler approaches are provided bythe Argand diagram(graphical solution)and by the method of complex numbers(analytical solution)

交流電路的分析包括對有相同頻率、不同幅值和初相角的諧振時(shí)間函數(shù)的加法。這些函數(shù)的直接相加將要求用到復(fù)雜的三角轉(zhuǎn)換。簡單的方法是采用阿爾岡圖法（圖解法）和復(fù)數(shù)方法（解析方法）

The entire system of Boolean algebra can be built up using combinations of only three

basic functions, the logic AND,the logic OR,and the logic NOT(or negation).Any Boolean equation can be realized by some combination of these three basic functions.These three

bsic functions will be discussed in detail below.布爾代數(shù)的整個系統(tǒng)都可以由三個基本函數(shù)邏輯‘與’‘或‘‘非’組合構(gòu)成。任何一個布爾等式可由這三個基本函數(shù)中的一部分組合而成，以下將詳細(xì)討論這三個基本函數(shù)。Many types of automatic control systems have appeared during the twentieth century，based on electronic mechanical, hydraulic and fluidic principles.In each case the design techniques have been similar because each component of the system usually contributes a single well defined function to the system behaviors

在20世紀(jì)，出現(xiàn)了許多種基于電子、機(jī)械、液壓和流體原理的自動控制系統(tǒng)。由于系統(tǒng)中的每一元件通常對系統(tǒng)的運(yùn)轉(zhuǎn)狀態(tài)只起單一 確定的功能，各種類型系統(tǒng)的設(shè)計(jì)技術(shù)是相似的 The first advantage has already been mentioned;the large scale integration of

electronic systems has reduced the number of components which are used, leading to an increasein the overall reliabilityof the system and a reduction in assembly costs.The decreasein size which results from largescale integration means that the equipment based onmicrocomputers is usually much smaller, lighter, and more robust than that using older technologies.第一個優(yōu)點(diǎn)已經(jīng)提到過了，就是電子系統(tǒng)的大規(guī)模集成已經(jīng)降低了所用的元件數(shù)量，促使系統(tǒng)的總體可靠性的提高和裝配費(fèi)用的降低。由于大規(guī)模集成引起的尺寸減小意味著基于微計(jì)算機(jī)的設(shè)備功能通常要小得多，輕得多，并且比用舊技術(shù)制成的設(shè)備要更為強(qiáng)大Electronic systems are used forihandling information in the most general sense;This

information may be the telephone conversation, the instrument reading or ‘the company’saccounts, but in each case the same main types of operation are involved;the processing, the storage and the transmission of information.In conventional electronic design,Theseoperations are combined at the function level;for example, a counter, Whether electronicor mechanical, stores the current count and increments it by one as required.A systemsuch as an electronic clock which employs counters has its storage and processing capabilities spread throughout the system because each counter is able to store and process numbers.廣義的說，電子系統(tǒng)是用于處理信息的，這種信息可以是電話交談、儀器讀數(shù)或企業(yè)賬戶，但是各種情況下都涉及相同的主要操作：信息處理、儲存和傳送。在常規(guī)的電子設(shè)計(jì)中，這些操作都是以功能平臺方式組合起來的，列如計(jì)算器，無論是電子還是機(jī)械的，都要儲存當(dāng)前值，并按要求將該值增1.諸如采用計(jì)數(shù)器的電子鐘之類的任一系統(tǒng)要使其存儲和處理能力遍布整個系統(tǒng)，因?yàn)槊總€計(jì)數(shù)器都能存儲和處理一些數(shù)字。

Microcomputers use RAM(Random Access Memory), into which data can be written

and from which data can be read again when needed.This data can be read back from

thememory in any sequence desired, and not necessarily the same order in which it was written, hence the expression ‘ random’ access memory.Another type of memory ROM(Read

Qnty Memory)is used to hold fixed patterns of information which cannot be affected by

the microprocessor;these patterns are not lost when power is removed and are normally

used to hold the program which defines the behavior of a microprocessor based system.ROMs can be read like RAMs, but unlike RAMs they cannot be used to store variable information.Some ROMs have their data patterns put in during manufacture, while othersare programmable by the user by means of special equipment and are called programmableROMs.The widely used programmable ROMs are erasable by means of special ultravioletlamps and are referred to as EPROMs, short for Erasable Programmable Read Only Memories.Other new types of device can be erased electrically without the need for ultravioletlight, which are called Electrically Erasable Programmable Read Only Memories, EEPROMs

計(jì)算機(jī)常使用RAM（隨機(jī)存取存儲器），在RAM中數(shù)據(jù)可被寫入，并且在需要時(shí)可再次被讀出。這種數(shù)據(jù)能以任一所希望的次序從存儲器中讀出，不必按寫入時(shí)的相同次序，所以有“隨機(jī)”存取存儲器。另一類ROM（只讀存儲器）用來保持不受微處理器影響的固定的信息標(biāo)本；這些標(biāo)本在電源切斷后不會丟失，并通常用來保存規(guī)定微處理器化系統(tǒng)運(yùn)轉(zhuǎn)過程的程序。ROM可像RAM一樣被讀取，但與RAM不一樣的是不能用來存儲可變信息。有些ROM在制造時(shí)將其數(shù)據(jù)標(biāo)本放入，而另外的則可通過特殊的設(shè)備由用戶編程，所以稱為可編程ROM。被廣泛使用的可編程ROM可利用特殊紫外線燈擦除，并被稱為EPROM，即可擦除可編程只讀存儲器的縮寫。另有新類型的器件不必用紫外線燈而用電擦除，所以被稱為電可擦除可編程只讀存儲器EEPROM。

To employ feedback control, we must first measure the condition we wish to maintain at the desired standard.The condition(variable)may be temperature, pressure, flow,level ,conductivity , pH, moisture content, or the like.要應(yīng)用反饋控制，我們首先必須測出所要維持的某個期望標(biāo)準(zhǔn)的對應(yīng)狀態(tài)。這狀態(tài)（變量）可是溫度、壓力、流量、物位、電導(dǎo)體、pH值、濕度或類似。

System models can be developed by two distinct methods.Analytical modeling consists of a systematic application of basic physical laws to system components and the interconnection of these components.Experimental modeling, or modeling by synthesis, is the

selection of mathematical relationship which seems to fit observed input-output data.系統(tǒng)的模型可以通過兩類截然不同的方法來建立。解析模型是將物理學(xué)基本定律系統(tǒng)性地應(yīng)用于系統(tǒng)各組成部分及其相互之間的關(guān)聯(lián)關(guān)系進(jìn)而獲取結(jié)果的方法。經(jīng)驗(yàn)建模，或叫綜合建模，是一種通過尋找數(shù)學(xué)關(guān)系而建立模型的方法，這種數(shù)學(xué)關(guān)系應(yīng)該能夠與輸入-輸出觀測數(shù)據(jù)相配合。

第五篇：摘要——浙江科技學(xué)院自動化專業(yè)英語期末考試

摘要：對樓宇自動化安防系統(tǒng)進(jìn)行了研究，提出了一種基于LonWorks總線的分布式控制系統(tǒng)，介紹了系統(tǒng)的工作原理、網(wǎng)絡(luò)構(gòu)成、硬件功能和通信實(shí)現(xiàn)。

樓宇自動化安防系統(tǒng)the security system of building automation總線 bus

分布式控制系統(tǒng)Distributed control system工作原理the operational principle

網(wǎng)絡(luò)構(gòu)成the network configuration硬件功能the hardware function

The research is carried out for the safety system of building automation in the paper.A distributed control mode based on LonWorks bus is proposed.The performing principle of the system，the configuration of the network, the function of hardware and the realization of communication are introduced.老師翻譯The security system of building automation is studied.ALonWorks bus based distributed control system is proposed.The system operational principle, network configuration, hardware function and realization of communication are discussed.A temperature control system was proposed employing proportional valve in order to retain the constant oil temperature in a large hydraulic system.The mathematic model of temperature was conducted based on laws of thermodynamics.Fuzzy PID strategy was employed in the real system.Results show that the fuzzy PID controller can reach control accuracy of 45±1 ℃.Compared with conventional PID controller, the fuzzy PID controller can achieve higher control accuracy, faster response and stronger robustness in oil temperature controloflarge hydraulic system

針對某大型液壓系統(tǒng)的油溫恒定需求，分析系統(tǒng)發(fā)熱的數(shù)學(xué)模型和油液溫度變化的滯后特性，提出一套運(yùn)用比例水閥連續(xù)調(diào)節(jié)板式換熱器冷卻水量的大型液壓系統(tǒng)油溫控制方法．在MATLAB仿真環(huán)境中，比較分析使用常規(guī)PID和參數(shù)自整定模糊PID算法的油溫控制特性．仿真結(jié)果表明，模糊PID控制器具有不依賴系統(tǒng)模型、響應(yīng)快、控制精度高的優(yōu)點(diǎn)，且易于PLC實(shí)現(xiàn)．將模糊PID控制方案應(yīng)用于實(shí)際系統(tǒng)中，實(shí)驗(yàn)結(jié)果表明，參數(shù)自整定模糊PID控制器能夠克服油溫的大時(shí)滯、非線性變化，使得油液溫度有效控制在45±1℃；參數(shù)自整定模糊PID控制器的響應(yīng)速度、控制精度均優(yōu)于常規(guī)PID，適合應(yīng)用于大流量液壓系統(tǒng)的油溫控制．

We consider the problem of automatically recognizing human faces from frontal views with varying expression and illumination, as well as occlusion and disguise.We cast the recognition problem as one of classifying among multiple linear regression models and argue that new theory from sparse signal representation offers the key to addressing this problem.This new framework provides new insights into two crucial issues in face recognition: feature extraction and robustness to occlusion.We conduct extensive experiments on publicly available databases to verify the efficacy of the proposed algorithm.我們考慮的問題從正面視圖自動識別人臉不同表達(dá)和照明,以及阻塞和偽裝。

我們把識別問題的分類之間的多元線性回歸模型,認(rèn)為新理論從稀疏信號表示提供了解決這一問題的關(guān)鍵。

這個新的框架提供了新的見解在人臉識別的兩個關(guān)鍵問題:特征提取和健壯性閉塞。我們在公開數(shù)據(jù)庫進(jìn)行大量實(shí)驗(yàn)驗(yàn)證該算法的有效性。

A disturbance observer based BP-PID controller was designed in order to enhance

thecontrol precision of furnace temperature.An equivalent compensation was introduced in the input of the BP-PID controller to form a new controller…

The controller can automatically adapt to each kind of working condition and maintains very high precision at stable state.The controller can strongly inhibit from the large range of payload disturbances.設(shè)計(jì)了一個基于擾動觀測器的BP-PID控制器以提高爐溫的控制精度。

介紹了一個等價(jià)補(bǔ)償輸入的BP-PID控制器組建一個新的控制器…

控制器可以自動適應(yīng)各種工況在穩(wěn)定狀態(tài)和保持非常高的精度。控制器可以從大范圍的強(qiáng)烈抑制負(fù)載擾動。

為了盡可能降低不穩(wěn)定特征點(diǎn)對識別率的影響,研究提出了基于序列圖像提取穩(wěn)定特征點(diǎn)的虹膜識別算法。該算法

首先用二維Gabor濾波器對序列虹膜圖像提取特征編碼,然后對該序列特征編碼求交集以提取穩(wěn)定特征點(diǎn),并利用這些穩(wěn)定特

征點(diǎn)建立虹膜的特征模板庫,最后通過計(jì)算相似度,獲得識別結(jié)果。在實(shí)驗(yàn)室采集的序列虹膜圖庫上,當(dāng)?shù)儒e率為0.3017%,分類閾值為0.6402時(shí),正確識別率可以達(dá)到99.73%。實(shí)驗(yàn)證明該算法是有效、可行的,并更好地提高了虹膜的分類精度和改善了虹膜的識別性能。

As much as possible in order to reduce the influence of the unstable characteristic points on recognition rate, and to study the optimum extraction was proposed based on image sequences stable feature points of iris recognition algorithm.The proposed algorithm

First 2 d Gabor filter of serial iris images was used to extract feature encoding, then the characteristics of the sequence coding for intersection stable to extract feature points, and using the stable

Indications point to establish the iris feature template library, finally by computing the similarity, to obtain recognition results.Acquisition sequence of iris gallery in the laboratory, when such fault rate is 0.3017%,Classification threshold is 0.6402, the correct recognition rate can reach 99.73%.Experiments prove that the algorithm is effective and feasible, and better improve the classification precision of the iris and improved the iris recognition performance.重要句型

We consider the problem of ……?我們考慮的問題……

This paper presents …, an algorithm that…?一個算法,提出了……

In this paper, we provide two different solutions to the problem of……

在本文中,我們提供了兩種不同的解決方案的問題…

We propose an …based algorithm.?我們提出一個基于…算法。

Based on……, we propose a general algorithm for…基于…我們提出一個通用的算法 This framework can handle errors due to……這個框架能夠處理錯誤由于

We first simplify this system by…and then solve the system by two alternative techniques.The first one is based on…and the second one on…

我們首先簡化該系統(tǒng)由兩個可選…然后解決系統(tǒng)技術(shù)。第一個是基于…和第二個… a key issue is…

A new … is proposed for…提出了一個新的…

We demonstrate that our solutions are efficient, robust, and practical by experiments on synthetic and real data.我們證明我們的解決方案是有效的,健壯的,和實(shí)際實(shí)驗(yàn)合成和真實(shí)的數(shù)據(jù)。

Experimental results demonstrate the advantages and limitations of the algorithm on both simulated and real-world data.實(shí)驗(yàn)結(jié)果證明該算法的優(yōu)點(diǎn)和局限性對模擬和實(shí)際數(shù)據(jù)

We conduct extensive experiments ……to verify…我們進(jìn)行廣泛的實(shí)驗(yàn)…來驗(yàn)證…

Results from simulations and experiments show the improved performance of the proposed仿真和實(shí)驗(yàn)結(jié)果表明提出的改進(jìn)的性能

algorithm when compared with that of…算法相比與…