非线性系统

A concept of partial derivative called pseudo-partial-derivative is used to dynamically linearize a nonlinear system, and an aggregation method is applied to deal with the future predictive PPD.

基于pseudo-partial-derivative的概念动态线性化非线性系统，利用集结方法处理未来预测时刻的PPD，实现了非线性系统的自适应预测函数控制。

Moreover, the statistical linear regression with fuzzy observation data is discussed. When the parameters of a Tagaki-Sugeno fuzzy system are perturbed with random noise, the system turns to be a stochastic T-S system.

设控制对象是用Tagaki-Sugeno模糊模型表示的非线性系统，当模型参数受到统计特征已知的随机噪声干扰时，就成为一个随机T-S模糊模型，本质上它是一个非线性随机微分系统。

Lastly, we study the conditions of linearization for symmetric system, from which we can see that a symmetric system is linearizable on manifold M if and only if this system is linearizable on quotient manifold M/G.

最后讨论了对称非线性系统线性化问题，从中可以看出对于具有对称性的非线性系统只要在商流形M／G上能满足线性化条件即能保证在整个流形M上能线性化。

As many systems with reduced relative degree can be transformed into nonlinear cascade systems, much research attention has been focused on such systems.

由于很多具有降相对阶的非线性系统可以转化为非线性级联系统，其特性得到了广泛研究。

Bifurcation behaviour of nonlinear systems under the resonance condition isstudied when there are parametric and external excitations at the same time.

本文提出的映射迭代法可以有效地用于强非线性系统的定性分析，且对于弱非线性系统，其一次近似的平均方程与其它方法等价。

A new method of fault diagnosis based on the nonlinear spectral analysis for a class of nonlinear systems with the Volterra series solution is given in this dissertation. The new method consists of three elements.

本文对一大类可以用Volterra级数描述的SISO非线性系统进行了研究，在前人研究的基础上，提出了一整套工程可实施的基于非线性系统频域分析的故障检测与诊断理论和方法。

A method that can feedback linearize some nonlinear systems is studied, this method offer us an approach to linearize a nonlinear system in large region.

利用神经网络的逼近能力，提出应用神经网络对非线性系统实现反馈线性化的方案，该方案对非线性系统的大范围线性化提供了一种有效的实现手段。

The extended Kalman filtering method adopts the method to linearize the non-linear system approximately, and the problem of non-linear system filtering is solved.

扩展卡尔曼滤波采取对非线性系统近似线性化的处理方法，解决了非线性系统滤波问题。

When some assumptions are satisfied, the nonlinear system can be converted to the polytopic LPV system by a certain kind of nonlinear state feedback, based on which, the control law can be designed by LPV control techniques.

当满足一定条件时，通过引入给定形式的非线性状态反馈将该类非线性系统化为polytopic LPV系统，进而可以采用LPV控制方法进行控制律设计。

Aimed at the problem of inability for traditional PID controller to control such a nonlinear system as scissors platform, a fuzzy PID control system was designed for eleratory platform on the basis of both the fuzzy and PID control, which could well eliminate the unfavored effect due to the nonlinearity.

针对传统PID控制对剪叉机构升降台的非线性系统无法控制的问题，利用模糊控制较好地解决非线性因素造成的不利影响，设计基于模糊控制和PID控制的FUZZY PID剪叉机构升降台控制系统。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。