系统函数

Owing to the complexity of CIMS' missions,the reliability modeling should adapt the production processes accurately.Conventional reliability model method can not reflect the time dynamic behavior of CIMS,so the multitask reliability model based on generalized stochastic Petri nets is established for a CIMS manufacturing shop with multiple missions and the process times of the machines with exponential distributions.Furthermore,analysis of GSPN model based on behavior expression and moment generating function is presented,then can compute the transfer functions.Finally,the multitask reliability can be easily obtained without the reachability graph of Petri nets,which measure can reflect the operating performance of the whole multitask CIMS more intuitively.

CIMS生产的复杂性要求其可靠性模型可以精确地反映生产过程，由于传统的可靠性建模方法无法兼顾CIMS的时间动态特性，所以针对一个复杂的有多个加工任务的CIMS制造单元，由于其机器加工工件的时间均为指数分布，则采用广义随机Petri网进行多任务可靠性建模，在此基础上基于Petri网行为表达式，将矩母函数思想引入其中，不必生成可达标识图就可通过计算模型的传递函数，进而得到整个系统的多任务可靠度，该可靠性指标可以更直观地反映具有多种加工任务的整个CIMS的运行性能。

With the monotone increasing and monotone decreasing ofψ-functions, we obtained some useful conclusions.

我们同样将ψ函数引入无限时滞的中立型随机系统，得到更普通的矩估计和轨道估计，在ψ函数单调减少和单调增加两种情况下，分别给出了方程解的矩稳定性和矩有界性，以及方程解的轨道稳定性和轨道有界性。

The experimental results show that the electron multiplication process significantly influences the system MTF, compared with non-EM, especially at high EM gain.

实验结果表明，与无倍增时相比，倍增对系统调制传递函数的影响很大，尤其是在高倍增增益时，在Nyquist频率处，调制传递函数平均下降达30%。

For the whole switched system, a suitable switched law is designed to ensure: 1 the state of the closed-loop system, at the time of the transition, resides in the stability region of the mode that the system is switched into; 2 the Lyapunov function for each mode is nonincreasing wherever the mode is reactivated, thereby guaranteeing the stability.

对整个切换系统，设计适当的切换律以保证： 1在切换时刻，闭环系统的状态处在切入系统的稳定区域内； 2切入模块的Lyapunov函数是非增的，从而可保证稳定性。

For the one-dimensional p-Laplacian with indefinite weights, four sequences of periodic and anti-periodic eigenvalues are given by introducing the rotation number function, and these eigenvalues are the endpoints of the preimage intervals of the rotation number function at nonnegative integers.

本文以带变号权函数和带变号势函数的一维p-Laplacian为基本模型，系统地阐述了特征值的旋转数方法、带正权Dirichlet特征值的最佳估计、特征值在正则和奇异渐近半线性方程的可解性中的应用、Fucik谱的旋转数方法以及Fucik谱在周期解的扭转性和多解性中的应用。

In case of high input dimension system model, taking norm of input vector as the input of wavelet network instead of using tensor product method to construct wavelet network ,which could solve the problems of high computation and curse of dimensionality.

在模型结构方面，对于多维输入输出系统建模，本文放弃选用传统的标量积确定小波基函数的方法，将输入矢量的范数作为小波网络基函数的输入变量，从而避免了高维输入所带来的可用小波基数量巨大和计算复杂的缺点。

Based on normal distribution function, fuzzy subordinate function with five terrane geological mechanics parameters and three local physical geography condition parameters is deserved according to this method.

以正态函数为基础，利用该方法确定了5个岩层地质力学参数、3个区域自然地理条件参数的模糊隶属函数形式，形成了山区公路建设场地分类的模糊分类系统和方法。

Optimal control of electrohydraulic position servo system is designed by using optimal control theories and Riccati equation.

应用最优控制理论和黎卡提方程对电液位置伺服系统进行最优控制的设计，得出最优控制系统的闭环传递函数，并结合算例，绘制出该系统的波德图，算例表明了该方法的有效性和工程实用性。

Conventionally the electric load forecasting can hardly attain a result whose accuracy meets what's required. A short-term load forecasting model is therefore developed to solve the problem, based on the process neural network of which the input is the function of time and the high forecasting accuracy is available. Describes the structure of the model, discrete data fitting method by the expansion of function orthogonal basis and learning algorithm.

针对目前常用方法在解决负荷预测问题时，结果往往难以达到工程要求精度的现状，利用过程神经网络输入为时间函数以及预测精度高的特点，建立了基于过程神经网络的电力系统短期负荷预测模型；给出了模型的结构，基于函数正交基展开的离散数据拟合方法以及模型的学习算法。

In the new system, the orthogonal functions replace the trigonometric functions in the coherent modulation-demodulation of traditional communication system.

正是这种正交函数使得通信系统的传输的性能大大提高，保密性加强，而且正交函数的产生很方便。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。