1) function of describing the shape
形状描述函数
1.
The function of describing the shape was obtained with the shape-center point and the match-starting point of edge.
提出一种确定形状描述函数的方法。
2) 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) 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。
4) 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。
5) the describing function
描述函数
1.
Considering the inadequacy of the describing function, through an example Ne=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。
6) shape representation
形状描述
1.
New Method of 2D Shape Representation and Edge Smoothing;
新的二维形状描述方法与边界平滑
2.
Shape Representation Based on Graphs;
基于图的形状描述方法研究
补充资料: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。
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。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条