The research content of the thesis is the speech enhancement technique that is used in the acoustic feedback suppresser . firstly , we searched and compared the methods of noise estimation based on vad and updating the noise spectrum continuously , combined them together to make some improvement . secondly , we research on some speech enhance techniques including short time spectrum analysis speech enhance technique and its improvement form , simulated the algorithms and compared them each other 本论文研究语音增强技术在声反馈抑制器中的应用,论文的主要工作包括: 1 .对基于vad ( voiceactivitydetection )的噪声估计方法和连续更新噪声谱的方法进行研究和比较,针对仿真结果分析两种噪声估计的性能,并将两者结合起来,做出改进,用于实际的语音增强系统中。
The main tasks finished in this paper include : 1 . this thesis deduces circular arrays and line arrays pattern ’ s synthesis function and compares their performance and characteristics according to simulation results . also the influence of amplitude and phase quantification is analyzed in array signal 本文主要完成的工作: 1 .推导圆形阵列和线形阵列方向图综合函数,根据仿真结果分析并比较了圆阵和线阵的性能和特点,并在此基础上分析了幅相量化在阵列信号处理中产生的影响。
In chapter 4 , the principle drawing of the system is presented after adding a constant - pressure - drop valve . the operating principal of the valve is briefly introduced . the static mathematical model is built up and study is carried out by means of simulation under the circumstance of matlab , then the static working point is obtained 对定差减压阀作了简要的介绍，根据系统工作原理图建立静态数学模型进行仿真研究，由仿真结果分析系统静态工作特性，得到静态工作点；然后，建立系统动态模型，对其动态特性进行非线性仿真研究，并就环境因素变化对系统工作特性的影响作了详细分析。
The paper build a model of electric ship power system , include the model of motor and generator derived from simulink , the model of propeller build by the author , the model of load flow . after the process of model simulation , the dynamic curve of electrical ship were drawn out 应用simulink已有的电机模块，再自行建立螺旋桨的simulink模型，结合数据库模块和用户自定义的s函数模块，建立了电力推进船的船?机?浆匹配模型，并进行了仿真计算和动态特性模拟，并进行了仿真结果分析。
The whole article consists of 6 parts : 1 . object of the project and the development background of the relative technique are introduced . 2 . the theory of the micro inertial heave height measurement is depicted . 3 . arithmetic model base on matlab / simulink for micro inertial heave height measurement is offered , including the result analysis for the simulation . 4 . the whole hardware design base on aduc841 single chip of the mimu data collection system is depicted . 5 . software design is introduced . 6 . adjusting and error compensation model of the mems is depicted . at last , sum - up , view and enhancement of the system are given 本论文分成六个部分:第一部分介绍了课题研究的目的及相关技术的发展概况;第二部分主要论述微惯性测高的理论基础;第三部分给出微惯性测高算法的matlab仿真模型及仿真结果分析;第四部分给出基于微惯性传感器及aduc841单片机的微惯性数据采集系统的硬件设计及调试方案;第五部分为微惯性数据采集系统的软件设计;第六部分介绍了微惯性传感器的标定及误差补偿方法。
Firstly , this paper shows the overview of these new technologies , and how wcdma system works with them ; secondly , tells about the modeling and simulation of hsupa system , and the study of the the performance of new technology and its influence on the radio network coverage ; thirdly , studys the node b scheduling mechanism and give a new algothrim to guarantee the efficiency when using the radio uplink resources ; at last , some typical umts traffic models are studied , and an algothrim to grarantee the qos of all the traffics while there are multi - traffics in cell is given 文章首先具体介绍了这些新技术和功能的特点、原理,以及这些新技术在wcdma系统中的应用;然后介绍了根据标准协议对hsupa系统进行计算机建模和仿真,并且结合仿真结果分析了新技术的性能、对系统覆盖与容量的影响;随后对hsupa技术的nodeb调度进行了研究,并提出了保证上行资源利用效率的调度机制;最后,对一系列umts业务模型进行了分析,并提出了基于业务服务质量qos保证的小区内多用户并存时的调度算法。
In addition , the system can record data , print report and process the alarm event automatically by using configuration software and rs485 network , so it greatly increments the automation level in graphitization process and the quality of product second , the paper analyzes the defect of power supply in graphitization , the development of temperature measure and the furnace has big time - delay , large inertial , no exact model characteristic , so introduces a new control method in temperature grad by using fuzzy logic controller with predictive model 其次，针对目前国内石墨化送电过程的缺陷和石墨化炉具有纯滞后、大惯性、难以建立数学模型的特点，并且考虑了测温技术的发展，研究运用预估模糊控制系统实现石墨化过程温度梯度的自动控制，建议对石墨化生产控制策略进一步改进。最后，利用matlab中的simulink ，对设计的系统进行仿真，并给出了仿真结果分析。
In chapter 2 , the operating principal of the hydraulic loading subsystem ' s of the tm is briefly introduced and the open - loop mathematical model is built up and study is carried out by means of simulation under the circumstance of matlab . the static working points are obtained and lay foundation for the proceeding dynamic simulation 第二章，简要介绍试验机液压加载子系统的工作原理，建立液压系统开环数学模型进行仿真研究，并根据仿真结果分析静态工作特性，得到静态工作点，为动态模型的非线性仿真奠定基础。
