A dynamic SVR–ARMA model with improved fruit fly algorithm for the nonlinear fiber stretching process

Natural Computing - The fiber stretching process plays the key role in the process of fiber production and its effects is measured by the stretching ratio. The stretching ratio is determined by the...     

硅酸盐激光玻璃的离子交换增强

用离子交换法能使硅酸盐激光玻璃机械强度增加２－３倍，激光强度增加３倍，从而弥补了自身热光系数较大的缺点。虽然玻璃在处理后，阈值稍微升高，效率稍有下降，但因允许输入更大的能量，使输出得到３倍的增加，说明了离子交换增强方法是成功的。     

螺旋缠绕厚壁压力容器封头段的线型调整

给出螺旋缠绕厚壁压力容器封头段纤维层厚度的计算公式以及线型调整的基本方法 ,通过调整线型 ,以达到螺旋缠绕厚壁压力容器封头段既不滑线又满足封头段强度要求的目的     

A data-driven surrogate-assisted evolutionary algorithm applied to a many-objective blast furnace optimization problem

A new data-driven reference vector-guided evolutionary algorithm has been successfully implemented to construct surrogate models for various objectives pertinent to an industrial blast furnace. A total of eight objectives have been modeled using the operational data of the furnace using 12 process variables identified through a principal component analysis and optimized simultaneously. The capability of this algorithm to handle a large number of objectives, which has been lacking earlier, results in a more efficient setting of the operational parameters of the furnace, leading to a precisely optimized hot metal production process.     

Extracting Interpretable Fuzzy Rules from RBF Networks

Radial basis function networks and fuzzy rule systems are functionally equivalent under some mild conditions. Therefore, the learning algorithms developed in the field of artificial neural networks can be used to adapt the parameters of fuzzy systems. Unfortunately, after the neural network learning, the structure of the original fuzzy system is changed and interpretability, which is considered to be one of the most important features of fuzzy systems, is usually impaired. This Letter discusses the differences between RBF networks and interpretable fuzzy systems. Based on these discussions, a method for extracting interpretable fuzzy rules from RBF networks is suggested. Simulation examples are given to embody the idea of this paper.     

FRP铺放成型技术的研究

纤维增强复合材料铺放成型技术是在手工迭层铺放和纤维缠绕工艺的基础上发展起来的一种机械化、自动化成型工艺.在纤维铺放成型技术中,主要采用铺放头机构实现纤维的铺放.该机构包括加料装置、加热装置、加压装置、剪切装置等.纤维铺放成型技术的控制系统主要是采用计算机数控(CNC)来实现.     

最优模糊控制的两种设计方法

本文基于二次型性能指标，给出了采用梯度法和遗传算法的模糊控制规则优化方法，并比较了它们的优缺点。仿真结果表明，这两种方法对未知系统的模糊规则优化具有明显的应用价值。     

高层建筑结构振动控制的一种瞬态最优控制算法

提出了一种适用于高层建筑结构振动控制的瞬态最优控制算法。该算法以求一个时变的二次型性能指标的最小值为目标，采用Ｎｅｗｍａｒｋ法求解最优控制力和结构的响应，使每一瞬时的性能指标取最小值。文中详细地分析了该算法，给出了编程方法和框图。