1、 [电气自动化]轧辊磨床电气控制系统 摘要轧辊磨床是现代工业生产中不可缺少的一种重要生产设备，主要用于冶金、造纸等行业。磨床是利用磨具对工件表面进行磨削加工的机床，大多数的磨床是使用高速旋转的砂轮进行磨削加工。磨床能加工硬度较高的材料，如... 类别：毕业论文 大小：515 KB 日期：2008-06-10 2、 [电气自动化]基于单片机的宽频程控波形发生器 摘要随着工业自动化水平的迅速提高，计算机在工业领域的广泛应用，人们对工业自动化的要求越来越高，种类繁多的控制设备和过程监控装置在工业领域的应用，使得传统的工业控制软件已无法满足用户的各种需求。通用工业... 类别：毕业论文 大小：830 KB 日期：2008-06-10 3、 [电气自动化]基于单片机的MOSFET驱动电路设计 摘要：当今世界随着电子技术的迅猛发展，MOSFET作为一种场效应晶体管大量的存在于我们的生产生活中并发挥着越来越重要的作用。本文以MOSFET的特性和工作原理为基础，逐步深入的介绍了以MOSFET为基... 类别：毕业论文 大小：1.18 MB 日期：2008-06-10 4、 [电气自动化]油田联合站自动监控方案设计 摘 要为加快信息化建设，满足生产、管理、决策等部门及时生产过程数据的迫切需求，结合化工装置过程控制的具体情况，确定了生产信息管理系统的结构，即:以实时数据库作为数据存储的平台，以过程数据采集为基础和以... 类别：毕业论文 大小：158 KB 日期：2008-06-10 5、 [电气自动化]未确知数学在电力系统安全评价中的应用 2008-06-07 09:46 38,912 封面.doc2008-06-07 09:46 419,328 幻灯片.ppt2008-06-07 09:... 类别：毕业论文 大小：278 KB 日期：2008-06-09
自动化相关的论文题目
自动化是一门涉及学科较多、应用广泛的综合性科学技术。作为一个系统工程，它由5个单元组成。下面，我为大家分享自动化相关的论文题目，希望对大家有所帮助！
No.1.自动化专业人才培养探索
No.2.自动化流水线实训系统的设计
No.3.电力自动化继电保护的安全管理
No.4.浅析电气自动化控制系统的设计思想
No.5.基于PLC的工业自动化控制技术探讨
No.6.工业自动化控制技术向智能家居的演进
No.7.矿井主扇风机自动化与信息化改造
No.8.基于IEC的变电站自动化系统安全风险评估
No.9.浅析集控站综合自动化系统运行中存在的问题
No.10.数字化变电站自动化技术的应用
No.11.如何提高综合自动化变电站的抗电磁干扰能力
No.12.自动化专业人才培养方案和课程体系的改革与实践
No.13.配电网自动化技术问题初探
No.14.楼宇自动化系统的监控方式及节能分析
No.15.地铁自动化控制相关系统的对比及应用
No.16.基于调度策略的自动化仓库系统优化问题研究
No.17.基于组态软件的综合自动化平台的设计与实现
No.18.基于PLC和运动控制器的电气自动化实验平台的设计
No.19.矿井自动化项目技术管理模式浅论
No.20.铁路变电站自动化监控系统的研制
No.21.馈线自动化自适应快速保护控制方案
No.22.高速制管机上的自动化系统解决方案
No.23.智能变电站是变电站综合自动化的发展目标
No.24.煤矿自动化与信息化技术回顾与展望
No.25.以先进自动化技术确保中线调水畅通
No.26.绿色理念背景下电厂自动化控制系统研究
No.27.大型自动化控制系统故障报警技术应用研究
No.28.煤矿电气自动化控制系统优化设计
No.29.配网自动化相关技术的研究
No.30.中心城市大型配电自动化设计方案与应用
No.31.自动化专业卓越工程师课程体系的改革与实践
No.32.综合自动化变电站电压量传输新方式
No.33.浅谈析电气自动化中的接地及保护
No.34.办公自动化在飞行中的应用
No.35.天津城市核心区配电自动化技术实施与进展
No.36.配电自动化系统中配电终端配置数量规划
No.37.倍福科技自动化技术助力高性能设备状态监测
No.38.渠道自动化控制系统与运行设计探析
No.39.自动化仓储系统优化方法的研究
No.40.配网自动化建设与运行管理问题探微
No.41.浅谈变电站综合自动化系统的`结构形式
No.42.变电站综合自动化通信系统运行维护分析
No.43.无功补偿技术在电气自动化中的应用
No.44.基于PIE的高分遥感泥石流自动化变化检测方法研究
No.45.电力自动化技术的新发展
No.46.配电自动化试点工程技术特点及应用成效分析
No.47.藁城新区水厂的自动化建设
No.48.配电自动化若干问题的探讨
No.49.工业自动化仪表故障分析及解决方法探析
No.50.建筑电气自动化系统安装的施工技术探讨
No.51.浅谈自动化仪表日常维护与故障解决
No.52.浅谈电力自动化管理系统
No.53.浅谈自动化控制系统及热工仪表的维护与管理
No.54.电气自动化工程控制系统的现状及其发展趋势
No.55.动力部一降压变电站综合自动化系统改造及应用
No.56.新型智能配电自动化终端自描述功能的实现
No.57.水电厂电气自动化控制设备的可靠性探讨
No.58.国外配网自动化建设模式对我国配网建设的启示
No.59.现场总线与工厂底层自动化及信息集成技术
No.60.铝工业电气自动化的现状与发展趋势
1.PLC控制花样喷泉.doc 2.S7-200PLC在数控车床控制系统中的应用3.PLC控制五层电梯设计 4.超高压水射流机器人切割系统电气控制设计5.基于PLC的恒压供水系统设计 6.西门子PLC交通灯毕业设计7.双恒压供水西门子PLC毕业设计 8.世纪星组态PLC控制自动配料系统毕业论文9.三菱梯形图PLC控制四层电梯 10.三菱PLC五层电梯控制11.全自动洗衣机西门子PLC控制 12.欧姆龙PLC控制交通灯13.基于PLC电机故障诊断系统设计 14.双恒压无塔供水系统plc设计毕业论文15.工业用洗衣机的PLC控制 16.PLC在配料生产线上的应用毕业论文17.变频调速恒压供水系统 18.PLC电梯控制毕业论文19.基于PLC电梯控制设计 20.基于PLC中断技术的集选电梯控制系统实现
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用于分布式在线UPS中的并联逆变器的一种无线控制器A Wireless Controller for Parallel Inverters in Distributed Online UPS SystemsJosep M. Guerrero', Luis Garcia de Vicufia", Jose Matas'*, Jaume Miret", and Miguel Castilla". Departament #Enginyeria de Sistemes, Automatica i Informhtica Industrial. Universitat Polithica de CatalunyaC. Comte d'Urgell, 187.08036 -Barcelona. Spain. Email: .. Departament #Enginyeria Electrbnica. Universitat Polit6cnica de CatalunyaAV. Victor BaLguer s/n. 08800I - Vilanova i la Geltrh. SpainAbsiract - In this paper, a novel controller for parallelconnectedonline-UPS inverters without control wireinterconnections is presented. The wireless control technique isbased on the well-known droop method, which consists inintroducing P-oand Q-V schemes into the inverters, in order toshare properly the power drawn to the loads. The droop methodhas been widely used in applications of load sharing betweendifferent parallel-connected inverters. However, this methodhas several drawbacks that limited its application, such as atrade-off between output-voltage regulation and power sharingaccuracy, slow transient response, and frequency and phasedeviation. This last disadvantage makes impracticable themethod in online-UPS systems, since in this case every modulemust be in phase with the utility ac mains. To overcome theselimitations, we propose a novel control scheme, endowing to theparalleled-UPS system a proper transient response, strictlyfrequency and phase synchronization with the ac mains, andexcellent power sharing. Simulation and experimental resultsare reported confirming the validity of the proposed approach.1. INTRODUCTIONThe parallel operation of distributed Uninterruptible PowerSupplies (UPS) is presented as a suitable solution to supplycritical and sensitive loads, when high reliability and poweravailability are required. In the last years, many controlschemes for parallel-connected inverters has been raised,which are derived from parallel-schemes of dc-dc converters[I], such as the master-slave control [2], or the democraticcontrol [3]. In contrast, novel control schemes have beenappeared recently, such as the chain-structure control [4], orthe distributed control [ 5 ] . However, all these schemes needcontrol interconnections between modules and, hence, thereliability of the system is reduced since they can be a sourceof noise and failures. Moreover, these communication wireslimited the physical situation ofthe modules [6].In this sense, several control techniques has been proposedwithout control interconnections, such as the droop method.In this method, the control loop achieves good power sharingmaking tight adjustments over the output voltage frequencyand amplitude of the inverter, with the objective tocompensate the active and reactive power unbalances [7].This concept is derived from the power system theory, inwhich the frequency of a generator drops when the powerdrawn to the utility line increases [8].0-7803-7906-3/03/$17.00 02003 IEEE. 1637However, this control approach has an inherent trade-offbetween voltage regulation and power sharing. In addition,this method exhibits slow dynamic-response, since it requireslow-pass filters to calculate the average value of the activeand reactive power. Hence, the stability and the dynamics ofthe whole system are hardly influenced by the characteristicsof these filters and by the value of the droop coefficients,which are bounded by the maximum allowed deviations ofthe output voltage amplitude and frequency.Besides, when active power increases, the droopcharacteristic causes a frequency deviation from the nominalvalue and, consequently, it results in a variable phasedifference between the mains and the inverter output voltage.This fact can be a problem when the bypass switch mustconnect the utility line directly to the critical bus in stead ofits phase difference. In [9], two possibilities are presented inorder to achieve phase synchronization for parallel lineinteractiveUPS systems. The first one is to locate a particularmodule near the bypass switch, which must to synchronizethe output voltage to the mains while supporting overloadcondition before switch on. The second possibility is to waitfor the instant when phase matching is produced to connectthe bypass.However, the mentioned two folds cannot be applied to aparallel online-UPS system, since maximum transfer timeought to be less than a % of line period, and all the modulesmust be always synchronized with the mains when it ispresent. Hence, the modules should be prepared to transferdirectly the energy from the mains to the critical bus in caseof overload or failure [lo].In our previous works [11][12], we proposed differentcontrol schemes to overcome several limitations of theconventional droop method. However, these controllers bythemselves are inappropriate to apply to a parallel online-UPS system. In this paper, a novel wireless control scheme isproposed to parallel different online UPS modules with highperformance and restricted requirements. The controllerprovides: 1) proper transient response; 2) power sharingaccuracy; 3) stable frequency operation; and 4) good phasematching between the output-voltage and the utility line.Thus, this new approach is especially suitable for paralleled-UPS systems with true redundancy, high reliability andpower availability. Simulation and experimental results arereported, confirming the validity of this control scheme.Fig. 1. Equivalenl cimuif ofan invener connecled 10 a bust"Fig. 2. P-odraop function.11. REVlEW OF THE CONVENTIONAL DROOP METHODFig. 1 shows the equivalent circuit of an inverter connectedto a common bus through coupled impedance. When thisimpedance is inductive, the active and reactive powers drawnto the load can be expressed asEVcosQ - V2 Q=where Xis the output reactance of an inverter; Q is the phaseangle between the output voltage of the inverter and thevoltage of the common bus; E and V are the amplitude of theoutput voltage of the inverter and the bus voltage,respectively.From the above equations it can be derived that the activepower P is predominately dependent on the power angle Q,while the reactive power Q mostly depends on the outputvoltageamplitude. Consequently, most of wireless-control ofparalleled-inverters uses the conventional droop method,which introduces the following droops in the amplitude Eand the frequency U of the inverter output voltageu = w -mP (3)E = E ' - n Q , (4)being W* and E' the output voltage frequency and amplitudeat no load, respectively; m and n are the droop coefficientsfor the frequency and amplitude, respectively.Furthermore, a coupled inductance is needed between theinverter output and the critical bus that fixes the outputimpedance, in order to ensure a proper power flow. However,it is bulky and increase:; the size and the cost of the UPSmodules. In addition, tho output voltage is highly distortedwhen supplying nonlinezr loads since the output impedanceis a pure inductance.It is well known that if droop coefficients are increased,then good power sharing is achieved at the expense ofdegrading the voltage regulation (see Fig. 2).The inherent trade-off of this scheme restricts thementioned coefficients, which can be a serious limitation interms of transient response, power sharing accuracy, andsystem stability.On the other hand, lo carry out the droop functions,expressed by (3) and (4), it is necessary to calculate theaverage value over one line-cycle of the output active andreactive instantaneous power. This can be implemented bymeans of low pass filters with a smaller bandwidth than thatof the closed-loop inverter. Consequently, the powercalculation filters and droop coefficients determine, to a largeextent, the dynamics and the stability of the paralleledinvertersystem [ 131.In conclusion, the droop method has several intrinsicproblems to be applied 1.0 a wireless paralleled-system ofonline UPS, which can he summed-up as follows:Static trade-off between the output-voltage regulation(frequency and amplitude) and the power-sharingaccuracy (active an4d reactive).2) Limited transient response. The system dynamicsdepends on the power-calculation filter characteristics,the droop coefficients, and the output impedances.Lost of ac mains synchronization. The frequency andphase deviations, due to the frequency droop, makeimpracticable this method to a parallel-connectedonline UPS system, in which every UPS should becontinuously synchronized to the public ac supply.1)3)111. PROPOSED CONTROL FOR PARALLEL ONLINE UPSINVERTERSIn this work, we will try to overcome the above limitationsand to synthesize a novel control strategy withoutcommunication wires that could be appropriate to highperformanceparalleled industrial UPS. The objective is toconnect online UPS inverters in parallel without usingcontrol interconnections. This kind of systems, also namedinverter-preferred, should be continuously synchronized tothe utility line. When an overload or an inverter failureoccurs, a static bypass switch may connect the input line tothe load, bypassing the inve:rter [14][15].Fig. 3 shows the general diagram of a distributed onlineUPS system. This system consists of two buses: the utilitybus, which is connected lo the public ac mains; and thesecure bus, connected to the distributed critical loads. Theinterface between these buses is based on a number of onlineUPS modules connected in parallel, which providescontinuously power to the: loads [16]. The UPS modulesinclude a rectifier, a set of batteries, an inverter, and a staticbypass switch.11638Q ac mainsutility busI I Ij distributed loads !Fig. 3. Online distributed UPS system.syposr /I 4(4Fig. 4. Operation modes of an online UPS.(a) Normal operation. (b) Bypass operation. (c) Mains failureThe main operation modes of a distributed online UPS1) Normal operation: The power flows to the load, fromthe utility through the distributed UPS units.2) Mains failure: When the public ac mains fails, theUPS inverters supply the power to the loads, from thebatteries, without disruption.Bypass operation: When an overload situation occurs,the bypass switch must connect the critical busdirectly to the ac mains, in order to guarantee thecontinuous supply of the loads, avoiding the damageof the UPS modules.For this reason, the output-voltage waveform should besynchronized to the mains, when this last is present.system are listed below (see Fig. 5):3)Nevertheless, as we state before, the conventional droopmethod can not satisfy the need for synchronization with theutility, due to the frequency variation of the inverters, whichprovokes a phase deviation.To obtain the required performance, we present a transientP-w droop without frequency-deviation in steady-state,proposed previously by OUT in [ 111w=o -mP (5)where is the active power signal without the dccomponent,which is done by. -I t -1sP= p ,( s + t - ' ) ( s + o , )being zthe time constant of the transient droop action.The transient droop function ensures a stable frequencyregulation under steady-state conditions, and 'at the sametime, achieves active power balance by adjusting thefrequency of the modules during a load transient. Besides, toadjust the phase of the modules we propose an additionalsynchronizing loop, yieldingo=w'-m%k,A$, (7)where A$ is the phase difference between the inverter and themains; and k, is the proportional constant of the frequencyadjust. The steady-state frequency reference w* can beobtained by measuring the utility line frequency.The second term of the previous equality trends to zero insteady state, leading tow = w' - k4($ -@'), (8)being $and $* the phase angles of the output voltage inverterand the utility mains, respectively.Taking into account that w = d $ / d t , we can obtain thenext differential equation, which is stable fork, positived$ *dt dt- + km$ = - + k,$' . (9)Thus, when phase difference increases, frequency willdecrease slightly and, hence, all :he UPS modules will besynchronized with the utility, while sharing the power drawnto the loads.IV. CONTROLLIEMRP LEMENTATIONFig. 5 depicts the block diagram of the proposedcontroller. The average active power P , without the dccomponent, can be obtained by means of multiplying theoutput voltage by the output current, and filtering the product........................................................................................io",.LSj'nchronirorion loop.......................................................................................Fig. 5. Block diagram of the proposed controller.using a band-pass filter. In a similar way, the averagereactive power is obtained, hut in this case the output-voltagemust be delayed 90 degrees, and using a low-pass filter.In order to adjust the output voltage frequency, equation(7) is implemented, which corresponds to the frequencymains drooped by two transient-terms: the transient activepower signal term; and the phase difference term, whichis added in order to synchronize the output voltage with theac mains, in a phase-locked loop (PLL) fashion. The outputvoltageamplitude is regulated by using the conventionaldroop method (4).Finally, the physical coupled inductance can be avoided byusing a virtual inductor [17]. This concept consists inemulated an inductance behavior, by drooping the outputvoltage proportionally to the time derivative of the outputcurrent. However, when supplying nonlinear loads, the highordercurrent-harmonics can increase too much the outputvoltageTHD. This can be easily solved by using a high-passfilter instead of a pure-derivative term of the output current,which is useful to share linear and nonlinear loads [I 1][12].Furthermore, the proper design of this output inductance canreduce, to a large extent, the unbalance line-impedanceimpact over the power sharing accuracy.v. SIMULATION AND EXPERIMENTARELS ULTSThe proposed control scheme, (4) and (7), was simulatedwith the parameters listed in Table 1 and the scheme shownin Fig. 6, for a two paralleled inverters system. Thecoefficients m, n, T, and kv were chosen to ensure stability,proper transient response and good phase matching. Fig. 7shows the waveforms of the frequency, circulating currents,phase difference between the modules and the utility line,and the evolution of the active and reactive powers. Note theexcellent synchronization between the modules and theACmiiinr 4 j. ...L...I.P...S...1... ..........................B...u...n...r.r..r..e..s... ................................... iFig. 6. Parallel operation oftwa online UPS modules,mains, and, at the same time, the good power sharingobtained. This characteristik let us to apply the controller tothe online UPS paralleled systems.Two I-kVA UPS modules were built and tested in order toshow the validity of the proposed approach. Each UPSinverter consisted of a single-phase IGBT full-bridge with aswitching frequency of 20 kHz and an LC output filter, withthe following parameters: 1. = 1 mH, C = 20 WF, Vi" = 400V,v, = 220 V, I50 Hz. The controllers of these inverters werebased on three loops: an inner current-loop, an outer PIcontroller that ensures voltage regulation, and the loadsharingcontroller, based on (4) and (7). The last controllerwas implemented by means of a TMS320LF2407A, fixedpoint40 MHz digital sigrial processor (DSP) from TexasInstruments (see Fig. 8), using the parameters listed in TableI. The DSP-controller also includes a PLL block in order tosynchronize the inverter with the common bus. When thisoccurs, the static bypass switch is tumed on, and the droopbasedcontrol is initiated.1640big 7 Wa\cfc)rms for twu.invencr, ;mnectcd in parallel. rpchrontred io Ihc ac mdnl.(a) Frequencics ufhoth UPS (b) Clrculattng currcni among modulcs. (CJ Phmc d!Nercn;: betucen ihc UPS a#>dth e ai mum(d) Ikiril uf the phze diNmncc (e) md (0 Activc and rcactlw pouerr "I ooih UPSNote that the iimc-acs arc deliheratcly JiNercni due in thc disiinct timuion*uni) ofthe \ inrblrr1641TABLEI.PARAMETEROSF THE PARALLELESDYS TEM.Filter Order I IFilter Cut-off Frequency I 0, I 10 I ragsFig. 8 shows the output-current transient response of theUPS inverters. First, the two UPS are operating in parallelwithout load. Notice that a small reactive current is circlingbetween the modules, due to the measurement mismatches.Then, a nonlinear load, with a crest factor of 3, is connectedsuddenly. This result shows the good dynamics and loadsharingof the paralleled system when sharing a nonlinearload.Fig. 8. Output current for the two paralleled UPS, during the connection of Bcommon nonlinear load with a crest factor of 3. (Axis-x: 20 mddiv. Axis-y:5 Mdiv.).VI. CONCLUSIONSIn this paper, a novel load-sharing controller for parallelconnectedonline UPS systems, was proposed. The controlleris based on the droop method, which avoids the use ofcontrol interconnections. In a sharp contrast with theconventional droop method, the controller presented is ableto keep the output-voltage frequency and phase strictlysynchronized with the utility ac mains, while maintaininggood load sharing for linear and nonlinear loads. This fact letus to extend the droop method to paralleled online UPS.On the other hand, the proposed controller emulates aspecial kind of impedance, avoiding the use of a physicalcoupled inductance. Th.e results reported here show theeffectiveness of the proposed approach.
电气工程中自动化技术的专业研究 关于电类专业毕业设计指导模式的研究浅谈电气工程及其自动化专业实践教学的创新模式 尽量写一个方向里的小点，不要把题目取得太大，太大不容易写好，以上仅供参考
楼主是什么歇学习阶段呢，你擅长什么呢？
1 电气自动化和电脑的整合运用。2 电气自动化和移动通讯的整合运用3 自动化组装机取代人工生产线的规划运用4 电气自动化的数据收集和统计分析5 电气自动化用于质量管理的规划和运用6 电气自动化运用在精益生产线的规划和分析这些都是目前比较有深度的题目
电梯的PIC程序控制 这是我的毕业论文题目 咋俩同专业 或者 路口交通灯的PLC控制 这个就太简单了 还有啥 我给忘了、。。。
1、论文题目：要求准确、简练、醒目、新颖。2、目录：目录是论文中主要段落的简表。（短篇论文不必列目录）3、提要：是文章主要内容的摘录，要求短、精、完整。字数少可几十字，多不超过三百字为宜。4、关键词或主题词：关键词是从论文的题名、提要和正文中选取出来的，是对表述论文的中心内容有实质意义的词汇。关键词是用作机系统标引论文内容特征的词语，便于信息系统汇集，以供读者检索。每篇论文一般选取3-8个词汇作为关键词，另起一行，排在“提要”的左下方。主题词是经过规范化的词，在确定主题词时，要对论文进行主题，依照标引和组配规则转换成主题词表中的规范词语。5、论文正文：（1）引言：引言又称前言、序言和导言，用在论文的开头。引言一般要概括地写出作者意图，说明选题的目的和意义,并指出论文写作的范围。引言要短小精悍、紧扣主题。〈2）论文正文：正文是论文的主体，正文应包括论点、论据、论证过程和结论。主体部分包括以下内容：a.提出-论点；b.分析问题-论据和论证；c.解决问题-论证与步骤；d.结论。6、一篇论文的参考文献是将论文在和写作中可参考或引证的主要文献资料，列于论文的末尾。参考文献应另起一页，标注方式按《GB7714-87文后参考文献著录规则》进行。中文：标题--作者--出版物信息（版地、版者、版期）：作者--标题--出版物信息所列参考文献的要求是：（1）所列参考文献应是正式出版物，以便读者考证。（2）所列举的参考文献要标明序号、著作或文章的标题、作者、出版物信息。
采纳以后来我这里拿几个例文。。第一、要坚持选择有科学价值和现实意义的课题。科学研究的目的是为了更好地认识世界、改造世界，以推动社会的不断进步和发展。因此，毕业论文的选题，必须紧密结合社会主义物质文明和精神文明建设的需要，以促进科学事业发展和解决现实存在问题作为出发点和落脚点。选题要符合科学研究的正确方向，要具有新颖性，有创新、有理论价值和现实的指导意义或推动作用，一项毫无意义的研究，即使花很大的精力，表达再完善，也将没有丝毫价值。具体地说，考生可从以下三个方面来选题。首先，要从现实的弊端中选题，学习了专业知识，不能仅停留在书本上和理论上，还要下一番功夫，理论联系实际，用已掌握的专业知识，去寻找和解决工作实践中急待解决的问题。其次，要从寻找科学研究的空白处和边缘领域中选题，科学研究还有许多没有被开垦的处女地，还有许多缺陷和空白，这些都需要填补。应考者应有独特的眼光和超前的意识去思索，去发现，去研究。最后，要从寻找前人研究的不足处和错误处选题，在前人已提出来的研究课题中，许多虽已有初步的研究成果，但随着社会的不断发展，还有待于丰富、完整和发展，这种补充性或纠正性的研究课题，也是有科学价值和现实指导意义的。第二、要根据自己的能力选择切实可行的课题。毕业论文的写作是一种创造性劳动，不但要有考生个人的见解和主张，同时还需要具备一定的客观条件。由于考生个人的主观、客观条件都是各不相同的，因此在选题时，还应结合自己的特长、兴趣及所具备的客观条件来选题。具体地说，考生可从以下三个方面来综合考虑。首先，要有充足的资料来源。“巧妇难为无米之炊”，在缺少资料的情况下，是很难写出高质量的论文的。选择一个具有丰富资料来源的课题，对课题深入研究与开展很有帮助。其次，要有浓厚的研究兴趣，选择自己感兴趣的课题，可以激发自己研究的热情，调动自己的主动性和积极性，能够以专心、细心、恒心和耐心的积极心态去完成。最后，要能结合发挥自己的业务专长，每个考生无论能力水平高低，工作岗位如何，都有自己的业务专长，选择那些能结合自己工作、发挥自己业务专长的课题，对顺利完成课题的研究大有益处。