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Signal separation technology for diphase opposition giant magnetostrictive self-sensing actuator

Xinhua WANG, Shuwen SUN, Jian ZHEN, Qianyi YA, Deguo WANG,

《机械工程前沿(英文)》 2010年 第5卷 第2期   页码 176-183 doi: 10.1007/s11465-010-0001-5

摘要: The structure and principle of a new type of a diphase opposition giant magnetostrictive self-sensing actuator is introduced. A bridge analysis model based on variable inductance is established. Dynamic balance separation technology for the giant magnetostrictive self-sensing actuator comes true by the least means square (LMS) self-adapting algorithm. The scheme design of one important part of the circuit with the real-time separation circuit of the dynamic balance signal based on a digital signal processor is obtained. The part of the signal separated circuit is designed, which includes logarithmic-antilog practical multiplication circuit, amplifying circuit, filter circuits, and amplifier circuit. Based on the embedded system simulation software—PROTUES, the simulation effect of the circuit that separates the sensing signal from the mixed signals is obvious, which indicates that the circuit can rapidly and stably work. Moreover, the structure is simple, reliable, and meets the practical requirement.

关键词: giant magnetostrictive material (GMM) self-sensing actuator     least means square (LMS) self-adapting algorithm     design of self-adaptive circuit    

自适应自动程序设计及其在自动售货机中的应用

余世明,丁国正,刘立峰

《中国工程科学》 2007年 第9卷 第11期   页码 147-150

摘要:

对程序故障的处理,通常可以使用返回值或异常来报告。但当状态模型中的程序出现故障后,使程 序仍能回到出现故障处的状态或做进一步的处理,这是返回值或异常做不到的。针对自动处理的实现,提出 了采用组合编码和状态冗余设计相结合的自动程序设计思想,给出了它的一个结构模型和算法。模型通过 减少程序的状态切换故障(预防)和增加系统的故障恢复能力(治疗)来实现这个目标。最后,将这个设计模 型部分成功地应用到自动售货机上,实际运行效果良好。

关键词: 自适应     状态冗余设计     自动程序设计     故障恢复     自动售货机    

基于ANFIS系统的基结构自适应生成

李旲,胡云昌,曹宏铎

《中国工程科学》 2004年 第6卷 第10期   页码 24-27

摘要:

以形成基结构智能自动生成系统为目标,以并行自适应神经-模糊推理系统(ANFIS)为工具,建立了具有桁架拓扑结构智能自动生成功能的并行ANFIS系统,并将形态化拓扑结构进行抽象数字提取,作为系统的输入输出数据,实质是形成一种桁架结构形态间的映射机制,以样本所蕴涵的结构构成机理,推导所要求的基结构形式。最后的计算结果表明,这里使用的基于ANFIS系统的桁架结构智能自动生成方法是有效的,能够按照用户要求生成合理的桁架基结构拓扑形式。

关键词: 桁架     ANFIS     智能     自适应    

Towards a self-adaptive service-oriented methodology based on extended SOMA

Alireza PARVIZI-MOSAED,Shahrouz MOAVEN,Jafar HABIBI,Ghazaleh BEIGI,Mahdieh NASER-SHARIAT

《信息与电子工程前沿(英文)》 2015年 第16卷 第1期   页码 43-69 doi: 10.1631/FITEE.1400040

摘要: We propose a self-adaptive process (SAP) that maintains the software architecture quality using the MAPE-K standard model. The proposed process can be plugged into various software development processes and service-oriented methodologies due to its explicitly defined inputs and outputs. To this aim, the proposed SAP is integrated with the service-oriented modeling and application (SOMA) methodology in a two-layered structure to create a novel methodology, named self-adaptive service-oriented architecture methodology (SASOAM), which provides a semi-automatic self-aware method by the composition of architectural tactics. Moreover, the maintenance activity of SOMA is improved using architectural and adaptive patterns, which results in controlling the software architecture quality. The improvement in the maintainability of SOMA is demonstrated by an analytic hierarchy process (AHP) based evaluation method. Furthermore, the proposed method is applied to a case study to represent the feasibility and practicality of SASOAM.

关键词: Quality attribute     Adaptation pattern     Architectural tactic     Service-oriented architecture     Self-adaptive process     Architectural pattern    

应用指数平滑技术预测边坡位移

沈良峰

《中国工程科学》 2007年 第9卷 第6期   页码 94-97

摘要:

应用趋势型指数平滑模型根据其观测值的数据特点(具线性趋势),选取趋势型二次指数平滑的线性 预测公式和相应at,bt的计算公式及合适的平滑系数值进行计算,预测了某市滑坡区5号监测点的位移量。预 测结果表明,该方法应用于斜坡变形位移的预测,可使预测值与实际位移值之间的误差很小。

关键词: 指数平滑     预测边坡位移     自适应过滤    

Self-catalytic pyrolysis thermodynamics of waste printed circuit boards with co-existing metals

《环境科学与工程前沿(英文)》 2022年 第16卷 第11期 doi: 10.1007/s11783-022-1581-0

摘要:

● The co-existing metals in WPCBs has positive catalytic influence in pyrolysis.

关键词: Waste printed circuit board     Catalyst     Pyrolysis     Kinetics    

基于自适应采样的鲁棒精确最优传输映射 Research Articles

王应时1,郑晓朋2,陈伟2,3,齐鑫4,任玉雪3,雷娜2,3,顾险峰4

《信息与电子工程前沿(英文)》 2021年 第22卷 第9期   页码 1207-1220 doi: 10.1631/FITEE.2000250

摘要: 最优传输在工程、医疗等各领域扮演着重要角色,包括图形学中的曲面参数化、计算机视觉中的注册、深度学习中的生成模型等。对于平方距离传输成本,最优传输映射是Brenier势的梯度,可通过求解Monge-Ampère方程得到。此外,最优传输映射可归结为几何凸优化问题。Monge-Ampère方程高度非线性,在求解过程中,中间解需要始终保持严格凸。特别地,离散解的精确性严重依赖于目标测度的采样。因此,提出一种自适应采样算法,极大减少采样偏差,同时提高离散解的精确性和鲁棒性。实验结果验证了所提算法的有效性和高效性。

关键词: 最优传输;Monge-Ampère方程;自适应采样    

一种K自适应的广域网SDN控制器部署方法 Article

Peng XIAO,Zhi-yang LI,Song GUO,Heng QI,Wen-yu QU,Hai-sheng YU

《信息与电子工程前沿(英文)》 2016年 第17卷 第7期   页码 620-633 doi: 10.1631/FITEE.1500350

摘要: 软件定义网络(software-defined networking)作为一种新技术框架,正成为未来网络技术的核心。软件定义网络的核心思想就是控制平面和数据平面分离,方便管理和控制编程。虽然软件定义网络已在数据中心这样的局域网中得到了应用和部署,但在更大规模的广域网上部署依然面临着很多问题,如SDN域划分、控制器部署等问题。本文提出了一种基于谱聚类的SDN控制器部署方法,通过此方法能将较大的网络划分成小的SDN域并选择其控制器位置。通过分析模型的矩阵扰动和本征间隙,能够自动得到SDN域个数,以达到较好的划分效果和控制器部署方案。最后,为了验证算法的有效性,本文提出了一个新的实验框架,并基于广域网拓扑结构进行了实验。实验结果表明,该方法能很好的解决SDN域划分和控制器部署问题。

关键词: 软件定义网络;控制器部署;K自适应方法    

Computational model generation and RVE design of self-healing concrete

Md. Shahriar QUAYUM,Xiaoying ZHUANG,Timon RABCZUK

《结构与土木工程前沿(英文)》 2015年 第9卷 第4期   页码 383-396 doi: 10.1007/s11709-015-0320-z

摘要: Computational homogenization is a versatile tool that can extract effective properties of heterogeneous or composite material through averaging technique. Self-healing concrete (SHC) is a heterogeneous material which has different constituents as cement matrix, sand and healing agent carrying capsules. Computational homogenization tool is applied in this paper to evaluate the effective properties of self-healing concrete. With this technique, macro and micro scales are bridged together which forms the basis for multi-scale modeling. Representative volume element (RVE) is a small (microscopic) cell which contains all the microphases of the microstructure. This paper presents a technique for RVE design of SHC and shows the influence of volume fractions of different constituents, RVE size and mesh uniformity on the homogenization results.

关键词: homogenization     self-healing concrete (SHC)     representative volume element     multiscale modelling    

基于自适应置信度校准的交互式医疗图像分割框架

沈楚云,李文浩,徐琪森,胡斌,金博,蔡海滨,朱凤平,李郁欣,王祥丰

《信息与电子工程前沿(英文)》 2023年 第24卷 第9期   页码 1332-1348 doi: 10.1631/FITEE.2200299

摘要: 基于人机交互的医疗图像分割方法是一种新的范式,其通过引入专家交互信息来指导算法完成图像分割任务。然而,现有医疗图像分割模型往往容易产生“交互误解”,即无法合理权衡短期和长期交互信息的重要性。为更好地利用不同时间尺度上的交互信息,本文提出一种基于自适应置信度校准的交互式医疗图像分割框架MECCA,其结合了基于分割决策的置信度学习技术和多智能体强化学习技术,并通过预测分割决策与短期交互信息的对齐水平来学习一个新颖的置信度网络。随后,提出一种基于置信度的奖励塑造机制,在策略梯度计算中引入置信度,从而直接纠正模型产生的交互误解。MECCA还通过标签生成和交互指导来降低交互强度和难度,从而实现用户友好交互。实验结果表明,MECCA在不同分割任务中可以显著提高短期和长期交互信息的利用效率,且仅需较少的标注样本。演示视频可通过https://bit.ly/mecca-demo-video访问。

关键词: 医疗图像分割     交互式分割     多智能体强化学习     置信度学习     半监督学习    

Experimental study of the restoring force mechanism in the self-centering beam (SCB)

Abhilasha MAURYA,Matthew R. EATHERTON

《结构与土木工程前沿(英文)》 2016年 第10卷 第3期   页码 272-282 doi: 10.1007/s11709-016-0346-x

摘要: In the past, several self-centering (SC) seismic systems have been developed. However, examples of self-centering systems used in practice are limited due to unusual field construction practices, high initial cost premiums and deformation incompatibility with the gravity framing. A self centering beam moment frame (SCB-MF) has been developed that mitigates several of these issues while adding to the advantages of a typical SC system. The self-centering beam (SCB) is a shop-fabricated, self-contained structural component that when implemented in a moment resisting frame can bring a building back to plumb after an earthquake. This paper describes the SCB concepts and experimental program on five SCB specimens at two-third scale relative to a prototype building. Experimental results are presented including the global force-deformation behavior. The SCBs are shown to undergo 5%–6% story drift without any observable damage to the SCB body and columns. Strength equations developed for the SCB predict the moment capacity well, with a mean difference of 6% between experimental and predicted capacities. The behavior of the restoring force mechanism is described. The limit states that cause a loss in system's restoring force which lead to a decrease in the self-centering capacity of the SCB-MF, are presented.

关键词: self-centering seismic system     seismic design     hysteretic behavior     restoring force     resilient structural system    

Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism

Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO

《机械工程前沿(英文)》 2021年 第16卷 第1期   页码 32-45 doi: 10.1007/s11465-020-0604-4

摘要: Passive variable stiffness joints have unique advantages over active variable stiffness joints and are currently eliciting increased attention. Existing passive variable stiffness joints rely mainly on sensors and special control algorithms, resulting in a bandwidth-limited response speed of the joint. We propose a new passive power-source-free stiffness-self-adjustable mechanism that can be used as the elbow joint of a robot arm. The new mechanism does not require special stiffness regulating motors or sensors and can realize large-range self-adaptive adjustment of stiffness in a purely mechanical manner. The variable stiffness mechanism can automatically adjust joint stiffness in accordance with the magnitude of the payload, and this adjustment is a successful imitation of the stiffness adjustment characteristics of the human elbow. The response speed is high because sensors and control algorithms are not needed. The variable stiffness principle is explained, and the design of the variable stiffness mechanism is analyzed. A prototype is fabricated, and the associated hardware is set up to validate the analytical stiffness model and design experimentally.

关键词: variable stiffness mechanism     stiffness self-regulation     bionic robot     modeling    

一种基于制造大数据的产品工艺自适应设计方法

魏巍,陈政,袁君

《中国工程科学》 2020年 第22卷 第4期   页码 42-49 doi: 10.15302/J-SSCAE-2020.04.017

摘要:

随着数字化与智能化生产方式在制造业中的广泛应用,引导企业重视并发挥制造大数据的价值对革新产品工艺设计具有重要意义。本文旨在面向企业数据与业务深度融合的应用需求,提出一种基于制造大数据挖掘的产品工艺自适应设计应用方法,用于解决企业中制造数据利用率不足等问题。以企业制造数据为起点,提出了“数据 + 知识 + 决策”的产品工艺自适应设计模式,总结了该模式的制造数据挖掘与利用流程,涵盖多源异构数据融合、数据清洗与预处理、数据变换与降维、数据挖掘、数据可视化和设计决策6个过程。最后以汽车产品焊接工艺为例,建立焊接工艺参数与焊接缺陷的预测模型,用于改善焊接工艺并提高焊接质量,实现制造大数据驱动的焊接工艺自适应设计。研究表明,制造大数据蕴含丰富的知识与模式,可以指导产品设计决策,支持实现不同制造环境下的产品工艺自适应设计;建议进一步推动大数据与第五代移动通信技术等新兴技术的结合,增加对大数据平台、算法设计平台研发的投入,激发制造大数据与产品工艺设计的更大交融。

关键词: 产品工艺,自适应设计,制造大数据,数据挖掘,知识发现    

Non-toxic, high selectivity process for the extraction of precious metals from waste printed circuit

《环境科学与工程前沿(英文)》 2023年 第17卷 第10期 doi: 10.1007/s11783-023-1723-z

摘要:

● Au, Ag and Pd were recovered from WPCBs with high efficiencies.

关键词: Thiosulfate     Printed circuit boards     Precious metals     Leaching     Hydrometallurgy    

融合自监督图学习与目标自适应屏蔽的会话型推荐方法 Research Article

王祎童,蔡飞,潘志强,宋城宇

《信息与电子工程前沿(英文)》 2023年 第24卷 第1期   页码 73-87 doi: 10.1631/FITEE.2200137

摘要: 会话型推荐旨在根据用户在短时间内有限的交互来预测下一个时间戳将要进行交互的物品。现有模型主要使用循环神经网络(RNN)或图神经网络(GNN)来建模顺序序列或物品之间的传递关系。然而,此类模型要么忽略了GNN的过度平滑问题,要么直接利用交叉熵损失和softmax层进行模型优化,容易导致过拟合问题。为了解决上述问题,本文提出一种融合自监督图学习与目标自适应屏蔽的会话型推荐方法(SGL-TM)。具体来说,首先根据所有涉及到的会话构建全局图,然后从物品之间的全局连接中捕捉自监督信号,用来监督模型生成当前会话中准确的物品表示。之后,通过比较真值与经过我们设计的目标自适应屏蔽模块调整后的物品的预测分数来计算主监督损失。最后,将主监督组件与辅助自监督模块相结合,以获得用来优化模型参数的最终损失。在两个真实数据集(Gowalla和Diginetica)上的大量实验结果表明,SGL-TM在Recall@20和MRR@20方面的性能优于最先进的基准模型,尤其体现在短会话上。

关键词: 会话型推荐;自监督学习;图神经网络;目标自适应屏蔽    

标题 作者 时间 类型 操作

Signal separation technology for diphase opposition giant magnetostrictive self-sensing actuator

Xinhua WANG, Shuwen SUN, Jian ZHEN, Qianyi YA, Deguo WANG,

期刊论文

自适应自动程序设计及其在自动售货机中的应用

余世明,丁国正,刘立峰

期刊论文

基于ANFIS系统的基结构自适应生成

李旲,胡云昌,曹宏铎

期刊论文

Towards a self-adaptive service-oriented methodology based on extended SOMA

Alireza PARVIZI-MOSAED,Shahrouz MOAVEN,Jafar HABIBI,Ghazaleh BEIGI,Mahdieh NASER-SHARIAT

期刊论文

应用指数平滑技术预测边坡位移

沈良峰

期刊论文

Self-catalytic pyrolysis thermodynamics of waste printed circuit boards with co-existing metals

期刊论文

基于自适应采样的鲁棒精确最优传输映射

王应时1,郑晓朋2,陈伟2,3,齐鑫4,任玉雪3,雷娜2,3,顾险峰4

期刊论文

一种K自适应的广域网SDN控制器部署方法

Peng XIAO,Zhi-yang LI,Song GUO,Heng QI,Wen-yu QU,Hai-sheng YU

期刊论文

Computational model generation and RVE design of self-healing concrete

Md. Shahriar QUAYUM,Xiaoying ZHUANG,Timon RABCZUK

期刊论文

基于自适应置信度校准的交互式医疗图像分割框架

沈楚云,李文浩,徐琪森,胡斌,金博,蔡海滨,朱凤平,李郁欣,王祥丰

期刊论文

Experimental study of the restoring force mechanism in the self-centering beam (SCB)

Abhilasha MAURYA,Matthew R. EATHERTON

期刊论文

Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism

Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO

期刊论文

一种基于制造大数据的产品工艺自适应设计方法

魏巍,陈政,袁君

期刊论文

Non-toxic, high selectivity process for the extraction of precious metals from waste printed circuit

期刊论文

融合自监督图学习与目标自适应屏蔽的会话型推荐方法

王祎童,蔡飞,潘志强,宋城宇

期刊论文