Ergodicity of MV-dynamical systems

 We introduce the concept of MV-dynamical system which includes the definition of (classical) dynamical system and the definition of fuzzy dynamical system. The main result is a characterization of ergodicity of MV-dynamical systems which also can be considered as an application of the properties of measures on MV-algebras. An important consequence is the characterization of ergodicity of fuzzy dynamical systems.     

求解线性约束二次优化问题的神经计算模型

本文提出了一种求解线性约束二次优化问题的神经模型 ,研究了该神经网络的稳定性和收敛性 ,给出了电路框图 ,并通过算例证明了该神经网络的可行性。     

利用注册表实现自定义中文输入法的智能安装

本文提出了一种利用注册表实现自定义中文输入法智能安装的方法,解决了阻碍自定义的中文输入法发布的问题。文章详细介绍了这一方法的工作原理和实现过程中所用的ＡＰＩ函数及应注意的几个问题,最后介绍了利用本文所阐述的知识解决其它问题的两个实例。     

自动化集装箱码头装卸目标三维测量系统设计

针对传统激光雷达在自动化集装箱码头装卸过程中对集装箱三维姿态定位精度低、成本高等问题,提出了一种基于视觉的集装箱姿态三维测量系统。首先通过小规模的深度学习网络快速进行集装箱锁孔粗定位,其次通过传统图像处理算法对集装箱锁孔进行二次定位得到集装箱锁孔的精确位置,最后结合装卸过程中集装箱的物理运动对集装箱姿态进行三维测量。实验结果表明,与改进前的深度学习网络相比,测量精度更高、测量速度更快;整体算法的测量精度为93.71%,约12.45 fps,集装箱姿态测量平均测量误差约为4.95%,满足自动化装卸的要求。     

现货市场下批发侧至零售侧的电价传导机制研究

电力现货模式下,售电公司在批发侧参与中长期与现货市场,在零售侧售电给零售用户,亟需在批发侧至零售侧之间建立完善的电价传导机制,通过量化不同电价传导模式下售电公司购售电成本,寻求其最大购售电利润,帮助售电公司降低市场运营风险,提升市场活力。为此提出了按比例传导、实时传导和延迟传导3种电价传导机制。算例结果验证了3种电价传导机制的可行性,分析了几种典型用户用电特性,并针对几种典型用户,给出了电价传导机制的选择建议。     

Self-Powered Piezoelectric Actuation Systems Based on Triboelectric Nanogenerator

Sustainable power supply via triboelectric nanogenerator (TENG) is attractive for self-powered actuation systems in the era of the Internet of Things (IoTs). Herein, a low-power actuation scheme enabled by the multilayered TENG for piezoelectric actuators, including the stack, unimorph, and micro-fiber composite (MFC) actuator, is reported. The working principles of TENG-powered piezoelectric actuators and their displacement characteristics in direct current (DC) and alternating current (AC) modes are theoretically investigated. Compared with conventional high-voltage power sources, the multilayered TENG delivers a maximum power of only 10.17 mW, providing a low-power alternative for piezoelectric actuator with self-powered capability and operational safety. Meanwhile, the hysteresis of the stack actuator that is critical in precise positioning control is reduced by 58.1%. A precise positioning system is demonstrated by utilizing the TENG-powered stack actuator as an object stage for microscope focusing applications. The feasibility of vibration control with a 76.7% reduction in vibration amplitude is also verified via two TENG-powered MFC actuators. A rectifying control circuit comprising the rectifier and gas discharging tube is established to implement AC–DC conversion and discharging control, achieving a larger displacement of the unimorph actuator. The TENG-powered piezoelectric micropump demonstrates its potential application in liquid transport through straightforward operation.     

A Kinetic Control Strategy for One-Pot Synthesis of Efficient Bimetallic Metal-Organic Framework/Layered Double Hydroxide Heterojunction Oxygen Evolution Electrocatalysts

Heterojunction materials are promising candidates for oxygen evolution reaction (OER) electrocatalysts to break the linear scaling relationship and lower the reaction barrier. However, the application of heterojunction materials is always hindered by the complicated multistep synthetic procedures which bring cost, complexity, and reproducibility issues. Herein, a strategy of kinetic controlled synthesis is developed to achieve the one-pot formation of bimetallic metal-organic framework (MOF)/layered double hydroxide (LDH) heterojunction electrodes as highly efficient OER electrocatalysts. The heterojunction electrodes present hierarchical structures with highly porous NiFe-LDH nanosheet networks vertically grown on the surface of NiFe-MOF-74 microprisms, promoting fast mass transport and high exposure of active sites. The strong interactions at the MOF/LDH heterojunction interfaces contribute to the outstanding OER activity surpassing the state-of-art RuO₂ OER catalysts. The MOF/LDH heterojunction electrode exhibits an ultralow overpotential of only 159.7 mV to reach the current density of 10 mA cm⁻², and yields large current densities at small overpotential (100 mA cm⁻² at 230.2 mV and 1000 mA cm⁻² at 284.3 mV) with long-term durability. This study presents an innovative approach to construct heterojunction materials with simple one-step synthesis, offering a promising pathway for high-efficiency electrocatalyst development.     

新一代信息技术在妇幼保健档案管理中的应用

随着计算机技术的快速发展,以区块链、大数据、人工智能等为主的新一代信息技术在各行各业中发挥着越来越重要的作用,这些技术能大大提高企业管理工作的效率和质量,在妇幼保健档案管理中也起到了重要的作用。在互联网时代,传统的档案管理方式已经无法满足企业和社会进步的需要,只有不断更新技术,才能使各类工作更加高效保质。文中对新一代信息技术在档案管理中的应用进行了研究,并提供了新的应用思路。     

基于傅里叶变换的双音多频信号识别实验设计

傅里叶变换是建立信号时间域与频率域之间的一种变换关系。针对傅里叶变换的学习难点,分析了不同类型信号的傅里叶变换关系。结合工程应用,设计了电话拨号的双音多频音频信号按键识别综合实验,通过信号分段、滤波处理和快速傅里叶变换算法提取信号的特征频率,实现了双音多频音频信号的按键号码识别功能。     

抽水工况双馈可变速抽蓄机组机电暂态建模及有功–频率耦合特性

传统定速抽蓄机组在抽水工况下输入功率无法连续调节,不具备参与电网调频能力。双馈式可变速抽蓄机组是一种新型的水电系统,由于抽水工况下转速连续可调,在保证静态扬程的前提上,通过变速运行,机组输入功率调节范围拓宽。为挖掘机组参与电网调频潜能,首先建立抽水工况可变速机组的简化机电暂态模型,该模型以抽水工况可逆水泵水轮机运行特性为基础,考虑了流体在过流管道内的动态特性,并计及导叶的附加摩擦效应;然后从水力的角度揭示了抽水工况机组具备调频能力的本质原因;阐明了抽水工况机组改善电网频率特性的机理,并给出了控制器参数的推荐范围。最后,仿真和实验结果验证所提抽水工况机组改善电网频率特性的能力。