A Feedback Based Scheme For Improving TCP Performance In Ad-Hoc Wireless Networks
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《Broadcasting, IEEE Transactions on》期刊第3页200条数据https:///academic-journal-foreign_broadcasting-ieee-transactions_info_128_1/1.《A New Blind SLM Scheme With Low Decoding Complexity for OFDM Systems》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html2.《Implementation and Co-Simulation of Hybrid Pilot-Aided Channel Estimation With Decision Feedback Equalizer for OFDM Systems》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html3.《A Depth-Aware Character Generator for 3DTV》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html4.《Novel End-to-End Quality of Service Provisioning Algorithms for Multimedia Services in Virtualization-Based Future Internet》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html5.《FPGA Design and Performance Evaluation of a Pulse-Based Echo Canceller for 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for ZP-OFDM System Over Deep Fading Channels》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html139.《A Synchronization Design for UWB-Based Wireless Multimedia Systems》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html140.《Frequency Domain Decision Feedback Equalization for Uplink SC-FDMA》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html141.《A 2 2 MIMO DVB-T2 System: Design, New Channel Estimation Scheme and Measurements With Polarization Diversity》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html142.《Impact of the Receive Antenna Arrays on Spatio-Temporal Availability in Satellite-to-Indoor Broadcasting》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html143.《Reducing Channel Zapping Time in IPTV Based on User's Channel Selection Behaviors》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html144.《On the Methodology for Calculating SFN Gain in Digital Broadcast Systems》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html145.《Statistical Multiplexing of Upstream Transmissions in DOCSIS Cable Networks》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html146.《Bit-Rate Allocation for Broadcasting of Scalable Video Over Wireless Networks》原文链接:https:///academic-journal-foreign_broadcasting-ieee-transactions_thesis/020*********.html147.《Full-Reference Video Quality Metric for Fully Scalable and Mobile SVC Content》。
Feedback controlThe class of control problems to examined here is considerable engineering interest. We should consider systems with several input , some known as controls because they may be manipulated and others called external disturbances, which are quite unpredictable, For example , in an industrial furnace we may consider the fuel flow, the ambient temperature, and the loading of material into the furnace to be inputs . Of there , the fuel flow is accessible and can readily be controlled , While the latter two are usually unpredictable disturbances.In such situation , one aspect of the control problem is to determine how the controls should be manipulated so as to counteract the effects of the external disturbances on the state of the system . One possible approach to the solution of this problem is to use a continuous measurement of the disturbances, and from this and the known system equations to determine what the control inputs should be as functions of time to give appropriate control of the system state.A different approach is to construct a feedback system , that is , rather than measure the disturbances directly and then compute their effects on the system from the model or system equations , we compare direct and continuous measurements of the accessible system states with signals representing their “ desired values” to dorm an error signal , and use this signal to produce inputs to the system which will drive the erroras close to zero as possible .By some abuse of terminology , the former approach has come to be known as open loop control , and the tatter as closed-loop control .At first sight , the two approaches might appear to be essentially equivalent . Indeed, one might surmise that an open-loopControl scheme is preferable since it is not necessary to wait until the disturbances have produced an undesirable change in the system state before corrective inputs can be computed and applied.图27.1(a)图27.1(b)However, this advantage is more than outweighed by the disadvantages of open-loop control and the inherent advantages of feedback systems. First, in many cases the implementation of theopen-loop control suggested above would require a very sophisticated (and hence expensive)computing device to determine the inputs require to counteract the predicted disturbance effects. Second, a feedback system turns out to be inherently far less sensitive to the accuracy with which a mathematical model of the system has been determined. Put another way, a properly designed feedback system will still operate satisfactorily even when the internal properties of the system change by significant amounts.Another major advantage of the feedback approach is that by placing a “feedback loop” around a system which initially has quite unsatisfactory performance characteristics, one can in many case construct a system with satisfactory behavior. Consider, for example, a rocket in vertical flight. This is essentially an inverted pendulum, balancing on the gas jet produced by the engine, and inherently unstable(any deviation of the rocket axis from the vertical will cause the rocket to topple over). It can, however, be kept stable in vertical flight by appropriate changes in the direction of the direction of the exhaust jet, which may be achieving these variations in jet direction is to use a feedback strategy in which continuous planes cause a controller to make appropriate adjustments to the direction of the rocket engine. Stabilization of an inherently unstable system could not be achieved in practice by an open-loop control strategy.The mathematical tools required for the analysis and design offeedback system differ according to the structural complexity of the systems to be controlled and according to the objectives the feedback control is meant to achieve.In the simplest situation, one control a single plant state variable, called the output, by means of adjustments to a single plant input. The problem is to design a feedback loop around the system which will ensure that the output changes in response to certain specified time functions or trajectories with an acceptable degree of accuracy. In either case, the transients which are inevitably excited should not b e too “violent” or persist for too long.In a typical situation,, The problem is to design a feedback system around the plant consisting of (a) a device which produces a continuous measurement Ym of the output; (b) a comparator in which this signal is subtracted from a reference input(or set point, or desired output)Yr , representing the desired value of the output, to produce an error signal e; and(c)a controller which uses the error signal e to produce an appropriate input u to the plant. We shall call this configuration a single-loop feedback system, s term which is meant to convey the essential feature that just one of the plant states (the output y)is to be controlled using only one input. The objective of the feedback system is to make the output Y(t) follow its desired value Yr(t) as closely as possible even in the presence of nonzero disturbances d(t). The ability of a system to do so understeady-state condition is known as static accuracy.图27.2Frequently Yr is a constant , in which case we call the feedback system a regulator system. An example is the speed control system of a turbine-generator set in a power station, whose main purpose is to maintain the generator speed as nearly constant as possible. Sometimes Yr is a prescribed non-constant function of time, such as a ramp function;An example of this would be the control system for a radar antenna whose axis is to be kept aligned with the line of sight to an aircraft flying past with constant angular velocity, In this case, we refer to the system as a tracking system..Single-loop feedback systems with the structure of Fig.27.2 are often called servomechanisms because the controller usually includes a device giving considerable power amplification. For instance, in the control system of a hydroelectric turbine-generator set, the signals representing measured speed and desired speed might be voltages at a power level of milliwatts, while several hundred horsepower might be required tooperate the main turbine valve regulating the water flow. This example also illustrate an important engineering constraint in the design of feedback control system. In many applications, the plant and the activating device immediately preceding it operate at comparatively high power levels, and their dynamic properties, if unsatisfactory for some reason, can be changed only at the expense of a feedback system is preferably done in the low-power components of the feedback system, I,e., in the measuring elements and the controller。
人事及行政领域是企业运营中不可或缺的一部分,与此相关的英语表达和术语也非常重要。
在人事及行政管理中,涉及到招聘、员工管理、劳动法规、培训发展、薪资福利等方面的内容。
以下是一些在人事及行政领域中常见的英语表达和术语:### **1. 招聘与求职(Recruitment and Job Seeking):**- **Job Posting:** 发布职位- *We need to create an attractive job posting to attract qualified candidates.*- **Resume/CV (Curriculum Vitae):** 简历- *Please submit your resume and cover letter for consideration.*- **Shortlist:** 入围名单- *After reviewing the applications, we will create a shortlist for interviews.*- **Interview Process:** 面试流程- *The interview process may include multiple rounds and assessments.*- **Reference Check:** 背景调查- *We will conduct a reference check before making a final decision.*### **2. 员工管理(Employee Management):**- **Onboarding:** 入职培训-*We provide comprehensive onboarding to help new employees integrate into the company.*- **Performance Review:** 绩效评估-*Employees undergo an annual performance review to assess their contributions and set goals for the future.*- **Employee Engagement:** 员工参与度- *Improving employee engagement is crucial for maintaining a positive work environment.*- **Conflict Resolution:** 冲突解决- *The HR department plays a key role in conflict resolution between employees.*### **3. 劳动法规(Labor Regulations):**- **Overtime:** 加班- *Employees are compensated for working overtime in accordance with labor regulations.*- **Labor Union:** 工会- *Workers have the right to join a labor union to advocate for their rights.*- **Equal Opportunity Employer:** 平等就业机会雇主-*Our company is proud to be an equal opportunity employer, promoting diversity and inclusion.*### **4. 培训与发展(Training and Development):**- **Training Program:** 培训计划- *The company offers a variety of training programs to enhance employees' skills.*- **Professional Development:** 职业发展-*Employees are encouraged to pursue professional development opportunities to advance their careers.*- **Skillset Enhancement:** 技能提升- *We provide workshops and courses for skillset enhancement in different areas.*### **5. 薪资福利(Compensation and Benefits):**- **Salary Structure:** 薪资结构- *The company is reviewing its salary structure to ensure competitiveness in the market.*- **Benefits Package:** 福利套餐-*Our benefits package includes health insurance, retirement plans, and flexible working hours.*- **Bonus Scheme:** 奖金计划- *Employees may be eligible for bonuses based on performance and company success.*### **6. 行政管理(Administrative Management):**- **Meeting Minutes:** 会议纪要- *Please review the meeting minutes for a summary of our discussions.*- **Office Supplies:** 办公用品- *The administrative assistant is responsible for managing office supplies.*- **Expense Report:** 报销报告- *Employees need to submit an expense report with receipts for reimbursement.*### **7. 离职与退休(Resignation and Retirement):**- **Resignation Letter:** 辞职信- *Please submit a resignation letter two weeks before your intended departure.*- **Retirement Plan:** 退休计划- *Employees are enrolled in the company's retirement plan for long-term financial security.*- **Exit Interview:** 离职面谈- *An exit interview may be conducted to gather feedback from departing employees.*这些英语表达和术语涵盖了人事及行政领域的多个方面。
乡村医生基层卫生人才能力提升培训成效及问题的调查分析作者:黄心怡李文峰陈寄陈小玲张燕清王水云冼明健来源:《科技资讯》2021年第27期摘要:目的以每五年工齡为一梯度,对医院培训学员进行实时考核、走访调查及相关人员反馈等,评估培训成效及存在问题。
方法调查内容包括出勤情况、病史采集及病例书写能力、四大教学活动、学员轮转及考核手册情况及反馈。
结果培训期间,不同工龄阶段的调查结果相差较大。
结论基层卫生人才能力提升培训主要是以实际需求为导向,以补短板为目标,以提高基层医疗卫生服务能力和家庭医生团队实用技能为重点,坚持医防融合的原则。
加强常见病、多发病的诊疗能力和实操能力、应对突发公共卫生事件和应急处理能力以及儿童眼保健等方面培训。
并结合新型冠状病毒性肺炎疫情的发展变化,与时俱进,通过增设新冠防护科普课程、实时更新教学方式、完善考核方案等以提高教学效果。
达到不断提高群众的获得感和对基层医疗卫生服务的利用率和满意度的目的。
真正做到医疗资源“沉下去”,服务水平“提上来”。
关键词:乡村医生基层卫生人才能力提升培训教学活动调查研究实际需求医防融合新型冠状病毒性肺炎疫情防护科普考核方案中图分类号: C975 文献标识码:A 文章编号:1672-3791(2021)09(c)-0000-00Investigation and Analysis on the Effectiveness and Problems of Ability Improvement Training of Rural Doctors' Grass-roots Health Talents—Taking Dianbai District People's Hospital of Maoming City as an ExampleHUANG Xinyi LI Wenfeng CHEN Ji CHEN Xiaolin ZHANG Yanqing WANG Shuiyun XIAN Mingjian*(Dianbai District People's Hospital,Maoming,Guangdong Province,525400 China)Abstract: Objective Take the length of service every five years as a gradient, conduct real-time assessment, visit and investigation and feedback from relevant personnel to evaluate the training effectiveness and existing problems.Method The survey contents include attendance,medical history collection and case writing ability, four teaching activities, student rotation and assessment manual and feedback.Result During the training period, the survey results of different seniority stages vary greatly.Conclusion The ability improvement training of grass-roots health talents is mainly based on the actual demand, aiming to make up for shortcomings, focusing on improvingthe grass-roots medical and health service ability and the practical skills of family doctors, and adhering to the principle of medical prevention integration. Strengthen the training of diagnosis and treatment ability and practical operation ability of common diseases and frequently occurring diseases, response to public health emergencies and emergency handling ability, as well as children's eye health care. Combined with the development and changes of the epidemic situation of New Coronavirus pneumonia, we should keep pace with the times, and improve the teaching effect by adding new crown protection science courses, updating teaching methods in real time and improving assessment programs. To continuously improve the people's sense of access and the utilization and satisfaction of grass-roots medical and health services. Truly achieve the "sinking" of medical resources and the "raising of service level".Key Word:Rural doctors' ability improvement and training of grass-roots health talents; Teaching activities; Investigation and research; Actual demand; Medical prevention integration; New Coronavirus pneumonia epidemic prevention science popularization;Assessment scheme.1调查对象和方法1.1 调查对象以2021年8月进入茂名市电白区人民医院,临床轮转周期为一个月(临床轮转科室为全科医学科、急诊科、妇科、儿科各一周)的15名学员为调查研究对象,对全员进行现状调查,共调查15名学员,有效调查率100%。
4.团队发展的风暴阶段指的是()攻击一个大目标,如“攻占城堡”。
当一个团队因为内部冲突而解散时。
当一个团队因为完成了它的主要目标而解散时。
当团队成员定义和适应他们的角色时,分歧和不确定性自然会上升。
Storming: As team members begin to discuss their positions and become more assertive in establishing their roles,disagreements and uncertainties are natural in this phase.【课本P185】风暴:当团队成员开始讨论他们的立场,并在确立自己的角色时变得更加自信时,分歧和不确定性在这个阶段是很自然的。
5. (单选题) Which of these is not listed in the Chapter 3 as one of the potential disadvantages of virtual这个建议显示出缺乏商业洞察力。
您可能会看到是否有一种方法可以用更简单的语言来传达这个消息。
Destructive feedback is little more than complaining or bullying.破坏性的反馈只不过是抱怨或欺凌。
【课本P196】7.What is the written record of the discussion points and decisions from a meeting called? (B)11. (单选题) As a general rule, how many parts should be set aside roughly to optimize your writing time?(C)12. (单选题)If you were to write an email message to a manufacturer complaining about a defective product and asking for a refund, your general purpose would be (B)13. (单选题) The purpose of limiting your scope when planning a writing project is to (D)14. (单选题)To make sure you have provided all the necessary information, use the journalistic approach, which is to (C)15. (单选题)Which of these is a reason the discovery technique of free writing can help you find your focus when starting a project? (D)它让你“内心的批评者”沉默,这样你就能更容易地表达出你的想法16.(单选题)No matter what the message is or the audience you want to reach, you should always (A)。
BEC新编剑桥商务英语中级(第三版)Module2WritingEx1. A manager has sent this memo. Answer the following.⼀位经理发来了这份备忘录。
回答下列问题:1. who is the memo to?备忘录是写给谁的?2. who will be interested in the information?谁会对该信息感兴趣?3. what has happened?发⽣了什么事?4. what is happening as a result?事情的结果怎样?5. what action is needed?需要采取什么⾏动?To: All staffFrom: James ShepherdDate: 23 JuneSubject: Presentation on changes to pension schemeDue to recent changes in government pension laws, the Head of Finance will give a presentation on Tuesday 1 July at 5.30 pm in the canteen to outline any effect on the current company-based pension scheme. Staff with this policy are welcome to attend.Answers1 All staff.2 Any staff with a company-based pension scheme.3 There have been changes in the government pension laws4 This will affect the current company-based pension scheme5 A presentation will be given by the Head of Finance on the changes and any effects.Ex2. Read three more memos. Underline any key words and use them to write the subject lines.再读三份备忘录。
感应电机二阶滑模次优算法定子磁链观测器设计潘月斗;陈泽平;郭映维【摘要】提出了基于二阶滑模次优算法的感应电机定子磁链观测方法,设计了定子磁链观测器,并应用到感应电机直接转矩控制中.本文设计的磁链观测器,通过准确的跟踪电流及其变化率,从而实现对转子磁链的准确估算,然后利用转子磁链与定子磁链的关系,估算出定子磁链.由于本文设计的定子磁链观测器是一个多输入多输出(MIMO)系统,稳定性分析非常复杂,为此将磁链估算误差的微分看作扰动处理,从而将MIMO的观测器模型分解成两个独立的单输入单输出(SISO)系统,简化了稳定性分析.将该观测器用于感应电机直接转矩控制中,达到了很好的控制效果.仿真和实验验证了该方法的有效性.【期刊名称】《控制理论与应用》【年(卷),期】2015(032)005【总页数】5页(P641-645)【关键词】感应电机;二阶滑模;次优算法;电流观测;磁链观测;直接转矩控制【作者】潘月斗;陈泽平;郭映维【作者单位】北京科技大学自动化学院,北京100083;北京科技大学钢铁流程先进控制教育部重点实验室,北京100083【正文语种】中文【中图分类】TM343感应电机被广泛应用于工农业生产、国防、科技及社会生活等各个方面,随着直接转矩控制和矢量控制技术的出现,使其逐渐进入了伺服控制领域[1].相对于矢量控制,直接转矩控制方法直接把转矩作为被控量,并由电流和定子磁链估算,无需进行磁场定向和矢量变换,更为简单和实用,具有快速的动态响应能力[2].直接转矩控制中,定子磁链观测值的精确度直接影响控制效果[3].定子磁链观测的基本方法有电压模型法和电流模型法.电压模型法结构简单,观测时仅需确定定子电阻.但是电压模型法在运算过程中需开环积分(纯积分),微小的直流偏移误差和初始值误差都将导致积分饱和[4].电流模型法可解决电压模型积分漂移和无法建立初始磁链的问题,但观测精度与转速相关,易受电动机转速变化的影响[5].为了更好的观测磁链,已提出了很多方法,如滑模变结构方法[6–7]、自适应方法[8]、卡尔曼滤波器方法[9–10]、神经网络方法[11]等.相比其他方法,滑模变结构方法对系统的不确定性因素具有较强的鲁棒性和抗干扰性,同时控制设计简单,物理上易于实现,因此得到广泛应用.但是在实际应用中,滑模变结构控制也存在一些问题,其中最主要的是抖振现象[12].近些年提出的高阶滑模控制理论[13],是对传统滑模控制理论的进一步推广.相比传统滑模,高阶滑模不仅保持了传统滑模的优点,同时抑制了系统的抖振,除去了相对阶的限制,并且提高了控制精度.二阶滑模控制是目前应用最广泛的高阶滑模控制方法,因为它的控制器结构简单且所需要的信息不多.二阶滑模控制中常见的4种算法有:twisting(螺旋)算法、sub-optimal(次优)算法、prescribed convergence law(给定收敛律)算法和Super-Twisting(超螺旋)算法.本文设计了一种基于二阶滑模次优算法的感应电机定子磁链观测器.将磁链估算误差的微分看作扰动处理,从而将MIMO的观测器模型分解成两个独立的SISO系统,简化了稳定性分析.将该观测器用于感应电机直接转矩控制中,达到了很好的控制效果.仿真及实验结果验证了该方法的有效性.设感应电机的磁路是线性的,忽略铁损的影响,在静止坐标系(α–β)下,感应电机的数学模型的状态方程为[14]δ=ηRs+Lmλθ;isα,isβ,usα,usβ,ψrα,ψrβ分别为α轴和β轴的定子电流、定子电压和转子磁链;ωr为转子电角速度;Ls,Lr,Lm分别为定子电感、转子电感和定转子间互感;Rs,Rr分别为定子电阻和转子电阻.定子磁链和转子磁链存在如下关系[15]:设计如下感应电机转子磁链观测器:其中:分别为定子电流和转子磁链的状态估计变量,vα和vβ为控制信号,分别为α轴和β轴的定子电流观测误差.定子电压和定子电流usα,usβ,isα,isβ都是可以检测到的,定子电压是原实际系统(感应电机)的输入量,定子电流可作为原实际系统的输出量;针对此观测器而言,定子电流检测量isα,isβ作为给定输入量(也作为干扰输入的一部分),定子电压检测量usα,usβ以及转子电角速度看作干扰输入的一部分;,作为观测器的反馈量.式(1)减式(2),可以得到定子电流和转子磁链观测误差方程电流观测误差方程写成如下形式:由式(5)可知,电流误差方程系统相对于控制信号v是1阶系统,因此可以采用二阶滑模控制,设计控制信号v,使得滑模变量s趋于零,并保持二阶滑动模态,即s==0.如果选取s=,采用二阶滑模控制,即可使得=0.二阶滑模次优算法(sub-optimal)形式如下:其中:s∗是最近的时间内,=0时s的值;k1,k2为控制参数,令s(t,x)=0为所定义的滑模面,控制目标是使系统的状态在有限时间内收敛到滑模流形s== 0.选取滑模面s=设计如下控制律:其中:对于式(5),将看作扰动处理,可将其分成α轴和β轴方向两个独立的SISO(单入单出)系统,如下:文献[16]给出了次优算法有限时间收敛的充分条件:其中Km,KM,C满足如下条件:对于本文设计的观测器系统,α轴方向分析如下:上式对时间求导,可得系统有限时间收敛的充分条件[16]如下:如果参数kα1,kα2满足式(9),则系统必能在有限时间内到达滑模面满足如下条件: β轴方向的稳定性分析同上.利用转子磁链观测器估算得到的转子磁链和定子电流,可估算定子磁链基于二阶滑模次优算法的感应电机定子磁链观测器系统框图如图1所示.为了检验所设计的基于二阶滑模次优算法的感应电机定子磁链观测器的有效性,进行了MATLAB仿真与实验.电机参数为:额定电压UN=220V,定子电阻Rs=94Ω,转子电阻Rr=83.9Ω,定子自感Ls= 5.387H,转子自感Lr=5.387H,互感Lm=5.082H,转动惯量J=0.105kg·m2.观测器控制参数为:kα1=kβ1=10,kα2=kβ2=5.电机施加220V,15Hz的三相交流电,在开环下空载运转,4s时,施加3N·m负载转矩.仿真时间7s,仿真结果如图2–5所示.从图3和图4可以看出,观测电流误差及其微分(由于实际对磁链观测误差有影响的是,所以图4实际是δ的值),在一定时间内渐近趋于0,从而说明了给二阶滑模次优算法控制的有效性.从图5可以看出,观测磁链在一定时间内达到稳定.为了验证基于二阶滑模次优算法的感应电机定子磁链观测器的有效性,将其应用到感应电机直接转矩控制中.电机参数与开环时一样,定子磁链给定值ψ=1Wb,给定转速600r/min.转速调节器采用PID控制,其中比例系数KP=10,积分系数KI= 0.001,微分系数KD=0.5.仿真时间20s,仿真结果如图6所示.为了验证二阶滑模次优算法定子磁链观测器的实际可行性,利用“电力电子与电气传动综合实验台”进行实验.实验台组成包括:功率挂箱、主控挂箱、加载控制箱、电动机、上位机,如图7所示.实验电机为鼠笼式三相异步电动机,参数与仿真时所用电机参数相同.转速给定值600r/min,实验结果如图8所示.从仿真和实验结果可以看出,二阶滑模次算法定子磁链观测器能够很好的观测定子磁链,电机转速也最终稳定在了给定值600r/min,从而证明了本文所提出的基于二阶滑模次算法的感应电机定子磁链观测器的实际可行性.本文提出的二阶滑模次优算法定子磁链观测器,首次将二阶滑模次优算法应用到感应电机定子磁链观测器设计中,并将此观测器应用到直接转矩控制中.从仿真和实验结果可以看出,该观测器能够准确的估算定子磁链,将其用于感应电机直接转矩控制中,也达到了很好的控制效果.仿真实验验证了该方法的有效性.潘月斗(1966–),男,博士,副教授,目前研究方向为交流电动机智能控制理论研究及高速高精交流电动机驱动系统的计算机数字控制系统设计,E-mail:****************;陈泽平(1989–),男,硕士研究生,目前研究方向为电气传动及自动化,E-mail:**********************;郭映维(1990–),男,硕士研究生,目前研究方向为异步电机控制理论及数字化设计,E-mail:*****************.【相关文献】[1]PELLEGRINO G,GUGLIELMI P,ARMANDO E,et al.Selfcommissioning algorithm for inverter nonlinearity compensation in sensorless induction motor drives[J].IEEE Transactions on Industry Applications,2010,46(4):1416–1424.[2]张细政,王耀南,袁小芳,等.基于滑模与自适应观测器的感应电机非线性控制新策略[J].控制理论与应用,2010,27(6):753–760.(ZHANG Xizheng,WANG Yaonan,YUAN Xiaofang,et al.New nonlinear controller forinduction motor based on sliding-mode control and adaptive observer[J].Control Theory&Applications,2010, 27(6):753–760.)[3]张猛,肖曦,李永东.基于扩展卡尔曼滤波器的永磁同步电机转速和磁链观测器[J].中国电机工程学报,2007,27(36):36–40.(ZHANG Meng,XIAO Xi,LI Yongdong.Speed and flux linkage observer for permanent magnet synchronous motor based on EKF[J]. 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河南2024高考备考经验检测联赛英语作文Preparing for the Henan Gaokao in 2024 is a significant challenge that demands strategic planning, dedicated study habits, and effective time management. The Gaokao is a highly competitive examination that determines students’ future academic paths. As such, it is crucial to approach this exam with a well-rounded preparation strategy. This essay provides comprehensive insights into effective preparation techniques, the importance of mental and physical health, and the value of seeking support from teachers and peers.One of the first steps in preparing for the Henan Gaokao is to thoroughly understand its structure and content. The Gaokao consists of several subjects, including Chinese, Mathematics, English, and a choice of science or humanities subjects. Each subject has its own format and types of questions. Familiarizing yourself with the exam pattern, types of questions, and markingscheme is essential. This understanding helps in tailoring your study plan to focus on areas that carry more weight and require more practice.A well-structured study schedule is the backbone of successful Gaokao preparation. It is essential to create a realistic and balanced timetable that allocates sufficient time to each subject based on its complexity and your proficiency level. Start by setting long-term goals, such as monthly or weekly targets, and then break them down into daily tasks. Ensure that your schedule includes time for revision, practice tests, and relaxation. Consistency is key, so adhering to your study plan diligently will yield the best results.Employing effective study techniques can significantly enhance your learning process. Active learning methods, such as summarizing information, teaching concepts to others, and creating mind maps, can help retain information better than passive reading. Additionally, practicing past exam papers undertimed conditions can improve your time management skills and boost your confidence. Using a variety of resources, including textbooks, online materials, and tutoring sessions, can provide diverse perspectives on challenging topics.Revision is a critical component of Gaokao preparation. Regularly revisiting previously studied material helps reinforce knowledge and identify areas that need further clarification. Create concise revision notes that highlight key points and formulas. Group study sessions can also be beneficial, as discussing topics with peers can offer new insights and aid in better understanding. Make sure to revise systematically, focusing on different subjects each day to maintain a well-rounded knowledge base.Maintaining mental and physical well-being is crucial during the intense preparation period. Stress and anxiety can hinder performance, so it is important to incorporate relaxation techniques, such as deep breathing exercises, meditation, andphysical activity, into your daily routine. Adequate sleep is also essential for cognitive function and memory retention. Eating a balanced diet and staying hydrated can further support your overall health and ensure you remain focused and energized.Do not hesitate to seek support from teachers, family, and friends. Teachers can provide valuable guidance, clarify doubts, and offer constructive feedback on your progress. Family and friends can offer emotional support and encouragement, helping to keep you motivated. Joining study groups or online forums can also provide a sense of community and shared purpose, making the preparation process less isolating and more collaborative.Taking mock exams is an excellent way to gauge your readiness for the actual Gaokao. Simulating exam conditions by taking full-length practice tests can help you develop effective time management strategies and identify areas that need improvement. Analyze your performance in these mock examsto understand your strengths and weaknesses. Focus on improving weak areas while reinforcing your strong points. Time management is crucial during the actual exam, so practice pacing yourself to ensure you can complete all sections within the allotted time.Maintaining a positive attitude and staying motivated throughout the preparation period can make a significant difference in your performance. Set achievable milestones and reward yourself for reaching them. Visualization techniques, such as imagining yourself succeeding in the exam, can boost your confidence. Surround yourself with positive influences and avoid negative comparisons with others. Remember that consistent effort and determination will lead to success.As the exam date approaches, focus on consolidating your knowledge and fine-tuning your exam strategy. Avoid cramming at the last minute, as it can increase stress and reduce retention. Instead, review your revision notes, take lightpractice tests, and ensure you have all necessary materials ready for the exam day. Get a good night’s sleep before the exam and approach the Gaokao with a calm and focused mindset.Preparing for the Henan Gaokao in 2024 requires a combination of strategic planning, effective study techniques, and a balanced approach to mental and physical health. Understanding the exam structure, creating a realistic study schedule, and employing active learning methods are essential steps. Regular revision, seeking support, and maintaining a positive attitude further enhance your preparation. By following these guidelines, you can approach the Gaokao with confidence and achieve your academic goals.。