自适应控制

The simulation results show that the vector control system based on this improved scheme has better dynamic and static performance. It solves a lot of problems such as larger error in the MRAS based on the back electromotive force when the motor runs across the zero speed and the instability based on the instantaneous reactive power in the regenerating mode and has high estimating precision.

仿真表明基于该方法的矢量控制系统动静态性能好，能有效解决反电动势模型参考自适应方法在速度过零点辨识误差大以及瞬时无功功率模型参考自适应方法在转速给定为负阶跃时转速不稳定问题，转速估计精度高。

This paper presents a kind of nonlinear adaptive inverse control with -filtered algorithm, which has adaptive disturbance canceler and feedback compensation in it.

提出了一种带自适应扰动消除器和反馈补偿的非线性自适应逆控制系统。

Based on the concept of space vector, an open loop detecting method for the fundamental negative and positive sequence components as well as the harmonic components is developed, which combining the conventional detecting method based on filters and the concept of space vector. This method can overcome the defaults of the conventional detecting method, and can meet the requirement of the asymmetrical control of HVDC-VSC.

运用自适应干扰对消原理和空间矢量的概念，提出了一种基波正序分量、基波负序分量及谐波分量的自适应检测方法，并进行了详细的理论分析，为研究HVDC-VSC的不对称运行控制奠定了基础。

Nowadays, adaptive rate control is the basic and significant technique of video multicast systems in the Internet. These adaptation approaches are all designed based on the best-effort service that today's Internet can provide, they present two drawbacks—unsteadiness of video receiving quality and no consideration of intersession fairness.

当前，自适应速率控制是因特网中视频组播系统采用的一种最基本和最重要的技术，但现有的自适应机制都是基于因特网提供的尽力而为服务来设计的，它们具有如下两个缺陷，即视频接收质量的不稳定性和无法实现会话间资源共享的公平性。

By using a concept of adaptive expected output and modern control theory,a dynamic adaptive Cournot model, which the inverse demand curve function is nonlinear in the market,is established.

本文通过引入自适应期望产量的概念，利用现代控制工程理论建立了市场非线性反需求函数下的自适应动态古诺模型。

In this paper, a typical robot system manipular is taken for an example, by adopting backstepping control, adaptive neural network and damping scheme, a smooth robust adaptive controller is achieved to track the given reference trajectory and swicthing is avoided.

本文以典型的机器人类系统机械臂为例，使用反步控制结合自适应神经网络和非线性阻尼技术，给出了一种光滑的鲁棒自适应控制器来跟踪给定参考轨迹，避免了控制器的切换。

In order to ensure the consistency of the closed-loop system performances, before the AFC is applied, a supervisory controller is used to drive initial tracking errors to a preset closed area, and then the AFC can drive the tracking errors of the closed-loop system to pre-specified neighborhood in the presence of unknown approximation errors of the fuzzy logic system.

为保证系统性能的一致性，在启动自适应模糊控制器前，采用监督控制将初始跟踪误差镇定到给定范围。自适应模糊控制器可在存在模糊逻辑系统逼近误差的情况下，使系统跟踪误差小于预先给定的任意常数。

An important part of this work is the development of an ameliorative algorithm of normalized variable stepsize for adaptive filtering.

本文对线性系统和非线性系统的自适应逆控制进行了研究，在第三章提出了一种改进的归一化变步长自适应滤波算法。

In the cochlear model, the model of the anteroventral cochlear nucleus is used to get the sychrony spectrum, the model of the posteroventral cochlear nucleus is used to get the firing rate spectrum and to detect the pitch.

对于中枢听觉系统：提出一个上橄榄复合体到耳蜗外毛细胞的自适应反馈控制模型，这个反馈由同步谱制导，实现了对刺激频率的选择注意，自适应于环境和语音的变化。

An adaptive fuzzy control system for 300kA prebake aluminum production cells was designed, which includes the sampling, transmission and pretreatment of the parameters, the database and fuzzy logical determination, the parameter recognition and adaptivity of the fuzzy rule and actuor.

摘 要：采用自适应模糊技术，设计了300kA预焙槽电解质温度和初晶温度的控制系统。该系统包括参数采集，参数网络传输和参数预处理，专家知识规则库、模糊逻辑决策，参数辨识、模糊规则自适应，人机界面和执行机构等模块。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。