描述函数,describing function
1)describing function描述函数
1.According to the strong nonlinear character of vehicle dynamic control system,the transfer function of partial equivalent linearization,which can describe dynamic nonlinear character of vehicle velocity control,is established by the method of non linear system describing function and ARMA(Auto Regressive Moving Average)model.针对汽车动力学控制系统具有强非线性的特点 ,根据非线性系统描述函数法及自回归滑动平均 (ARMA)模型的辨识方法 ,建立了描述汽车速度控制动力学强非线性的局部等效线性传递函数。
2.In this paper, approximate describing functions are introduced to describe the nonlinear feature of rate limiting.采用描述函数方法分析了带有速率限制环节的某机人机系统特性 ,分析表明 ,当速率限制发生后 ,在 Nichols图上 ,系统幅相特性将出现突跃现象 ,相位滞后增加、幅值减小 ,此时系统可能出现极限环振荡 ,即 PIO。
3.A pilot vehicle system (PVS) mathematical model containing nonlinear control elements of the flight control system is established by the describing function method; the limit cycle of PVS is determined; the relation between the limit cycle and pilot induced oscillation (PIO) and the influence of nonlinear control elements on PIO are explored.采用描述函数法建立了含有非线性控制系统的人机系统数学模型,确定了系统的极限特性,探讨了极限环与驾驶员诱发振荡(PIO)之间关系和操纵系统非线性因素对PIO影响等。
英文短句/例句

1.Research on the Characteristic of Rate Limiting Element Based on Describing Function Method基于描述函数法的速率限制环节特性研究
2.Using DF (Describing Function) in determining the limit cycle number of differential equation is a significant analysis try.将描述函数法用于确定微分方程极限环个数的问题是一个有意义的理论探索。
3.A Note on Rational Choice Function and Revealed Preference Representation关于选择函数展示偏好描述的评注
4.Several Kinds of Functions Equivalent Description in Complex Clifford Analysis;复Clifford分析中几类函数的等价描述
5.Equivalent Characterization of Sobolev SpaceSobolev空间中函数的等价性描述
6.The state-space representation and the transfer function representation of fractional order linear time-invariant systems are introduced.介绍了分数阶线性定常系统的状态方程描述和传递函数描述。
7.Considering diversity of population, a function is presented to describe diversity.考虑种群多样性,提出一种描述多样性的函数.
8.We postulated that the state of a quantum-mechanical system is specified by a state function.我们已假设量子力学体系的态用态函数来描述。
9.In the quantum world, objects are described by wave functions.在量子的世界中,物体都是以波函数来描述。
10.Design for Abstract Description Language of Function Template with Transformation Toward C++;函数模板抽象描述语言设计及到C++的转换
11.Description and Characteristic Analysis for Prospect Behaviors Based on the PD-Utility Function;基于PD-效用函数的预期行为描述与特征分析
12.With mathematics the gun system weight ismodelled a function of the basic performance parameters.从数学上把枪炮系统重量描述为基本性能参数的函数。
13.An index distribution is a distributing function that can describe the life-span of certain electronic elements well.指数分布是一种可以很好地描述某些电子元件的寿命的分布函数。
14.The fraction of excreting Pm in urine and faeces was power function of time.经粪尿共同排除钷的分数随时间变化,可用幂函数描述。
15.This function is too new for us to describe it more fully here.这个函数对于我们(来说)太新了,在这里我们无法更全面的描述它。
16.Road irregularity, as a stationary stochastic process, is generally illustrated by power spectral density (PSD) in frequency domain.道路随机过程通用的描述方法为频域的功率谱密度函数方法。
17.Notational conventions concerning functions in vector-matrix form are summarized here entirely in terms of vectors.关系矢量-矩阵形式函数的符号约定在此完全用矢量来描述。
18.Transition entry function could eliminate the conflicts of DWF_net by judging control variables.变迁入口函数通过判断控制变量,消解工作流描述模型中的冲突;
相关短句/例句

description function描述函数
1.For the nonlinear problem of simple guided munitions guidance and control system,description function is adopted to design the velocity autopilot including three types of nonlinear sections.针对简易制导弹药制导控制系统中存在的非线性问题,采用描述函数法对含有3种非线性环节的速度矢量驾驶仪进行了设计。
2.Then,the design of self oscilating electronic ballast using control tools such as description function,extended Nyquist criterion has been carried out.运用描述函数法和推广的奈魁斯特稳定判据等工具设计了一个 36W自激LC串联谐振并联负载型电子镇流器。
3.With respect to a class of fuzzy pre-estimate control systems,robust stability of the primary loop and the secondary loop is analyzed with description function and magni -tude-phase property respectively in this paper.针对一类模糊预估控制系统,利用幅相特性分析法及描述函数分析法分别对系统的主、付回路的鲁棒稳定性进行了分析,并导出了鲁棒上界。
3)the describing function描述函数
1.Considering the inadequacy of the describing function, through an example Ne=4πA, this paper presents a new method of calculating the descriptive functions, in the case of the frequency of 3w.针对描述函数的局限性,通过一个实例,由原描述函数为Ne=4πA,推导了考虑至3倍基波频率的一种新的计算描述函数Ne=4πA(2-43sin2ωt)的方法。
2.paper is to use the describing function to analyse the static stability of multimachine poWer systems.本文采用描述函数分析了多机电力系统的静态稳定性,建立了相应的多机电力系统模型及其分析方法。
3.The influenc of a proportional automatic excitation regulator(AER ) on thelow-freqency oscillation was analysed by fneans of the describing function method.本文提出用描述函数法来分析电力系统低频振荡和电力系统稳定器(PSS)对低频振荡的抑制作用。
4)descriptive function描述函数
1.This paper presents a new simple method for calculating the descriptive functions.基于描述函数的定义和性质,提出了一种新的简便计算描述函数的方法。
5)describing function method描述函数法
1.According to naturally nonlinear characteristics of attitude and divert engines,the describing function method based on harmonic linearization is used to analyze the system stability.针对拦截器姿轨控发动机工作的本质非线性特性,采用基于谐波线性化建立的描述函数法进行系统稳定性分析;推导了非线性系统的Nyquist幅相判据,同时从工程应用出发,将Nyquist幅相判据转换为Bode图对数判据,一起分析了拦截器俯仰角控制、滚动角控制和位置控制的稳定性,并对姿轨控发动机的推力进行了拉偏,分析结果表明拦截器程序悬浮姿态控制和位置控制系统是稳定的。
2.The Category Ⅱ PIO can be predicted by the describing function method.在基于描述函数法的Ⅱ型PIO预测中,建立了速率限制环节的描述函数模型,构建了具有速率限制环节的人机系统模型,分别采用驾驶员同步控制模型、补偿控制模型及Neal-Smith模型对人机系统Ⅱ型PIO预测进行了仿真对比研究。
6)describing function描述函数法
1.Analysis of nonlinear norm transform based on describing function;非线性度变换的描述函数法分析
2.According to the basic definition of describing function, we analyse the frequency character of typical non linear rate limiting element in modern flight control system.针对在现代飞行控制系统中存在的典型非线性速率限制环节 ,从描述函数的基本定义出发分析了其频率特性 ;然后将速率限制环节置于人机闭环系统中 ,利用描述函数法对驾驶员诱发振荡 ( PIO)机理进行了研究。
延伸阅读

描述函数分子式:CAS号:性质: 把线性系统中的传递函数方法推广于非线性系统情况下的一种方法。非线性装置输出量的基波分量与正弦输入信号幅度之比,定义为描述函数。一般情况下,描述函数决定于输入信号的幅度和频率,并且是一个复函数。