After analyzing the functions of the weighting matrices q and r , an efficient method , which is very easy to calculate with clear meaning , to select q and r is proposed . without iteration process , this method can save computational time considerably 同时分析了加权矩阵在最优控制器设计中的作用，提出了一种简单有效、意义明确、计算量小、不需要叠代计算的加权矩阵选取和计算方法。
Nce you locate a topic of interest in the table of contents , you can link almost instantly to the relevant " page " by clicking on the topic . when reading any q and a , a scroll bar is available to reveal contents that may extend beyond the bottom of the page 您可以先从内容目录中找到你感兴趣的题目，然后点选它，就可以马上联接到相关的书页，而每页都有一个小滑键让您可以读到本页的全部内容。
As for speed - sensorless foc system , the convergence and precision of both rotor speed and flux estimation with ekf depend on the accuracy of the models of system noise and measurement noise , i . e . q and r . genetic algorithm ( ga ) is applied in this paper to optimize parameters of the extended kalman filer ( ekf ) filter in a speed - sonserless field - oriented controller ( foc ) system 卡尔曼滤波估计实现的难点是，电机运行系统噪声和测量噪声的模型不易获得，而卡尔曼滤波器的收敛性和估计的精度在很大程度上受其影响，本文采用遗传算法对卡尔曼滤波器的输入参数进行离线优化。
Abstract : a continuous type inferential control algorithm and the proof of the stability and the convergency of the inferential control system are given in this paper . the system has the performance of convergency and robustness . the algorithm which is simple and has only one adjustable parameter q and has been successfully used for the servo control of the tension of the film in the metallized film capacitor automatic winding machine and we get a satisfactory result 文摘:给出了一种适用于工程常见的二阶对象的连续型推理控制算法，以及推理控制系统的稳定性和收敛性证明.该系统无差、稳定，且具有较好的鲁棒性.该控制算法简单，仅有一可调参数q ，并成功地应用于薄膜电容器全自动卷绕机中作为快速张力伺服控制，取得满意效果
In the last part , an experiential formula for nondimensional thermal stratification height is obtained , which includes inlet temperature t , inlet velocity v , heat transfer of the wall body q and the distance of heat source l . in order to obtain a more realistic result , the ? model is used to simulate the airflow and the buoyancy item is treated by boussinesq hypothesis . the paper investigates the flow field of the displacement ventilation in an office by a numerical method 两方程湍流模型为基础的壁面函数处理方法,对热浮升力项采用了boussinesq假设,得到了收敛的温度场、速度场分布。在此基础上,给出了热力分层高度的计算方法,并分析了送风温度、送风速度、围护结构传热和热源分布等因素对热力分层高度的影响。
Thirdly , based on correlation and multiple regression analysis , the thesis employs 165 listed companies in service industry , studies empirically inner influential factors of capital structure . it ' s concluded that leverage increases with rate of sales growth ; decreases with profitability , tobin ' q and non - debt tax shields ; and there is no significant correlation between firms " size , real tax , assets collateral value , ownership structure and leverage 对我国服务业165家上市公司2001 - 2002年末财务数据进行相关性和多元回归分析，得出，企业杠杆和主营业务收入增长率显著正相关；和托宾指数、盈利能力、非负债税盾显著负相关；和企业规模、实际税率、资产担保价值、股权结构没有显著影响。
It is superior to passive vibration isolation system , and also to the general active - passive hybrid vibration isolation system . the functions of the weighting matrices q and r are analysed and the conclusion is obtained that instantaneous optimal control algorithm is superior to linear quadratic gauss when choosing the same weighting matrices ( 4 )用计算机仿真验证了智能结构主动隔振的有效性和优越性；分析了加权矩阵对控制系统的影响并探讨其选取方法；证明了在加权矩阵选取相同时，瞬时最优控制优于lqg控制。
Surface transverse wave has the 1 . 6 high frequency than rayleigh type surface acoustic wave ( using the same technology the frequency of devices of stw has about 1 . 6 high frequency than rayleigh type surface acoustic wave ) . the paper introduces the theory , design parament , technology and result expeiment of surface acoustic wave ( includes rayleigh surface acoustic wave and surface transverse wave , simple stw ) with low insertion loss , high q and researches the high frequency , low phase noise oscillator with 1ghz stw resonator as frequency element . and describes measurement method and finally experimantal result of the low phase noise surface acoustic wave oscillator 本文研究了以低损耗、高q值声表面波(其中包括声表面瑞利波- - rayleighsurfaceacousticwave ,和声表面横波等)谐振器的工作原理、设计参数、制作工艺及其实验结果,并且研究了以1ghzstw谐振器为频控元件的高频率、低相位噪声声表面波振荡器,以及低相位噪声声表面波振荡器的测试方法和最终的测试结果。
The impact of load characteristics and on load tap changer on static voltage stability is analyzed with the methods based on v - q and v - p curves , and the phenomenon of voltage stability voltage instability and voltage collapse are studied with steady - state simulation . finally the thesis presents the essential explanations of both voltage stability and the mechanism of voltage collapse . xu yonghua ( electrical engineering ) directed by prof 通过电压?功率曲线分析法定性分析了不同负荷特性和有载调压变压器对静态电压稳定性的影响，并通过静态仿真法从物理现象上研究了电压失稳和电压崩溃现象，最后针对这些现象给出了关于电压稳定、以及电压崩溃的本质解释。
3 . the distance of metal wire and ground is smaller , the effective permeability leff , quality factor q and resonance frequency srf is also smaller ; the coil turns increases leff will increase , the q value and resonance frequency srf will drop ; the line width increases leff will drop , resonance frequency srf will increase and the q value is nearly invariable ; the via size , the pad layer size and thickness is little effect the effective permeability leff and resonance frequency srf but seriously influence q value 3金属导线离地的距离越小,有效电感值leff 、品质因子q 、自谐振频率srf也越小;线圈圈数增加, leff增加, q值和自谐振频率srf下降;线宽增加, leff下降自谐振频率增大q值几乎不变;通孔大小、覆盖层的大小及厚度对有效电感值leff和自谐振频率srf没有多大影响,但对q值影响较大。
