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期刊论文 9

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2023 2

2022 3

2020 1

2018 1

2001 2

关键词

一次原因分析法 1

人工智能诊断 1

优化调度 1

实时监测网络 1

有约束非线性规划 1

水泵调速 1

深海矿产；深海资源勘探；管道提升采矿系统；海底采矿车；混流举升泵 1

筛选法 1

设备诊断工程 1

黑灰白集合 1

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Long-term adaptive evolution of

Yong Xiao, Changye Xiao, Feng Zhao

《环境科学与工程前沿（英文）》 2020年第14卷第1期 doi: 10.1007/s11783-019-1182-8

摘要： Shewanella oneidensis MR-1 was acclimated to grow with Cr(VI) of 190 mg/L. Whole genomes from 7 populations at different acclimation stages were sequenced. Gene mutations mainly related to efflux pumps and transporters. An adaptation mechanism of MR-1 to high concentration of Cr(VI) was proposed. Acclimation is the main method to enhance the productivity of microorganisms in environmental biotechnology, but it remains uncertain how microorganisms acquire resistance to high concentrations of pollutants during long-term acclimation. Shewanella oneidensis MR-1 was acclimated for 120 days with increasing hexavalent chromium (Cr(VI)) concentrations from 10 to 190 mg/L. The bacterium was able to survive from the highly toxic Cr(VI) environment due to its enhanced capability to reduce Cr(VI) and the increased cell membrane surface. We sequenced 19 complete genomes from 7 populations of MR-1, including the ancestral strain, the evolved strains in Cr(VI) environment on days 40, 80 and 120 and their corresponding controls. A total of 27, 49 and 90 single nucleotide polymorphisms were found in the Cr(VI)-evolved populations on days 40, 80 and 120, respectively. Nonsynonymous substitutions were clustered according to gene functions, and the gene mutations related to integral components of the membrane, including efflux pumps and transporters, were the key determinants of chromate resistance. In addition, MR-1 strengthened the detoxification of Cr(VI) through gene variations involved in adenosine triphosphate binding, electron carrier activity, signal transduction and DNA repair. Our results provide an in-depth analysis of how Cr(VI) resistance of S. oneidensis MR-1 is improved by acclimation, as well as a genetic understanding of the impact of long-term exposure of microorganisms to pollution.

关键词： Environmental biotechnology Acclimation Chromate resistance Efflux pumps Detoxification

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Fault diagnosis of axial piston pumps with multi-sensor data and convolutional neural network

《机械工程前沿（英文）》 2022年第17卷第3期 doi: 10.1007/s11465-022-0692-4

摘要： Axial piston pumps have wide applications in hydraulic systems for power transmission. Their condition monitoring and fault diagnosis are essential in ensuring the safety and reliability of the entire hydraulic system. Vibration and discharge pressure signals are two common signals used for the fault diagnosis of axial piston pumps because of their sensitivity to pump health conditions. However, most of the previous fault diagnosis methods only used vibration or pressure signal, and literatures related to multi-sensor data fusion for the pump fault diagnosis are limited. This paper presents an end-to-end multi-sensor data fusion method for the fault diagnosis of axial piston pumps. The vibration and pressure signals under different pump health conditions are fused into RGB images and then recognized by a convolutional neural network. Experiments were performed on an axial piston pump to confirm the effectiveness of the proposed method. Results show that the proposed multi-sensor data fusion method greatly improves the fault diagnosis of axial piston pumps in terms of accuracy and robustness and has better diagnostic performance than other existing diagnosis methods.

关键词： axial piston pump fault diagnosis convolutional neural network multi-sensor data fusion

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全球变暖使热泵更受欢迎

Chris Palmer

《工程（英文）》 2023年第29卷第10期页码 2-4 doi: 10.1016/j.eng.2023.08.004

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变频驱动并联水泵变压变流量运行优化调度

李洪斌,张承慧,宋军

《中国工程科学》 2001年第3卷第9期页码 52-57

摘要：

分析了变频驱动并联水泵变压变流量运行优化调度问题的常用建模方法，并比较了各种方法的优劣。常用的方法是以水泵轴功率作为目标函数，以供水指标和高效区为约束条件。另一种方法是以满足扬程指标时的实际流量与所需流量之差的二次方作为目标函数，以水泵的高效区作为约束条件。提出了一种新的建模方法，模型物理意义与实际工况严格相符，具有较高的精度，满足了工程中对水泵切换频率尽量小的要求。仿真结果表明该方法是有效的。

关键词：优化调度有约束非线性规划水泵调速

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Development of an analytical model to estimate the churning losses in high-speed axial piston pumps

《机械工程前沿（英文）》 2022年第17卷第2期 doi: 10.1007/s11465-021-0671-1

摘要： The axial piston pumps in aerospace applications are often characterized by high-speed rotation to achieve great power density. However, their internal rotating parts are fully immersed in the casing oil during operation, leading to considerable churning losses (more than 10% of total power losses) at high rotational speeds. The churning losses deserve much attention at the design stage of high-speed axial piston pumps, but accurate analytical models are not available to estimate the drag torque associated with the churning losses. In this paper, we derive the analytical expressions of the drag torque acting on the key rotating parts immersed in oil, including the cylinder block and the multiple pistons in a circular array. The calculated drag torque agrees well with the experimental data over a wide range of rotational speeds from 1500 to 12000 r/min. The presented analytical model provides practical guidelines for reducing the churning losses in high-speed axial piston pumps or motors.

关键词： axial piston pump rotating parts high rotational speed churning losses drag torque

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Multi-objective optimization of surface texture for the slipperswash plate interface in EHA pumps

《机械工程前沿（英文）》 2022年第17卷第4期 doi: 10.1007/s11465-022-0704-4

摘要： Well-designed surface textures can improve the tribological properties and the efficiency of the electro-hydrostatic actuator (EHA) pump under high-speed and high-pressure conditions. This study proposes a multi-objective optimization model to obtain the arbitrarily surface textures design of the slipper/swash plate interface for improving the mechanical and volumetric efficiency of the EHA pump. The model is composed of the lubrication film model, the component dynamic model considering the spinning motion, and the multi-objective optimization model. In this way, the arbitrary-shaped surface texture with the best comprehensive effect in the EHA pump is achieved and its positive effects in the EHA pump prototype are verified. Experimental results show a reduction in wear and an improvement in mechanical and volumetric efficiency by 1.4% and 0.8%, respectively, with the textured swash plate compared with the untextured one.

关键词： electro-hydrostatic actuator axial piston pump slipper/swash plate interface multi-objective optimization surface texture

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Optimisation for interconnected energy hub system with combined ground source heat pump and borehole thermal storage

Da HUO, Wei WEI, Simon Le BLOND

《能源前沿（英文）》 2018年第12卷第4期页码 529-539 doi: 10.1007/s11708-018-0580-0

摘要： Ground source heat pumps (GSHP) give zero-carbon emission heating at a residential level. However, as the heat is discharged, the temperature of the ground drops, leading to a poorer efficiency. Borehole inter-seasonal thermal storage coupled with GSHP maintains the efficiency at a high level. To adequately utilize the high performance of combined GSHP and the borehole system to further increase system efficiency and reduce cost, such a combined heating system is incorporated into the interconnected multi-carrier system to support the heat load of a community. The borehole finite element (FE) model and an equivalent borehole transfer function are proposed and respectively applied to the optimisation to analyze the variation of GSHP performance over the entire optimisation time horizon of 24 h. The results validate the borehole transfer function, and the optimisation computation time is reduced by 17 times compared with the optimisation using the FE model.

关键词： borehole thermal storage energy hub ground source heat pumps (GSHP) particle swarm optimisation

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机泵群实时监测网络和故障诊断专家系统

高金吉

《中国工程科学》 2001年第3卷第9期页码 41-47

摘要：

应用现代信息技术和人工智能实施设备诊断工程，逐步实现状态维修和预知维修，是大型流程工业企业降低生产成本的重要途径之一。概要介绍为实现这一目标所开发的机电装备实时监测网络和人工智能诊断技术。简要介绍了基于Ethernet和FDDI开发、应用于石化企业的机、泵群实时监测网络；首次提出了黑灰白集合筛选法，在一次原因分析法和故障机理及其识别特征研究基础上，应用此方法开发的基于黑灰白集合筛选法的机械故障诊断专家系统，用于工程实践取得了满意的结果。

关键词：设备诊断工程实时监测网络人工智能诊断一次原因分析法黑灰白集合筛选法

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深海矿产资源开发装备现状及发展方向

王国荣,黄泽奇,周守为,付强,钟林,郭欣承,朱丹,梁冬梅,黄春海

《中国工程科学》 2023年第25卷第3期页码 1-12 doi: 10.15302/J-SSCAE-2023.03.001

摘要：

深海矿产资源开发是解决战略性矿产资源依存度持续高位问题的重要措施，拥有完备且可靠的装备体系，是保证我国站稳深海资源开发脚跟、实现国家战略资源自主可控的先决条件。本文聚焦国内外深海矿产资源勘探装备和开采装备的发展历程和现状，从完整开采系统、核心开采装备、基础装备及元器件三方面剖析国产装备发展不足，总结归纳相关装备亟待解决的科学技术问题，并据此从开展产业融合、完善绿色开采体系和优化技术支撑角度提出发展目标和重点攻关方向。研究建议，优先攻关核心装备短板以支撑我国实现规模化开采；促进多产业融合、推动完整装备链高质量发展；建议开展深海矿产资源开发重大装备攻关工程，聚焦核心装备“卡脖子”技术的“产学研用”深度融合，同时给予多方面政策支持，集中力量推动国产装备的优质创新迭代，以加快我国实现商业化开采进程。

关键词：深海矿产；深海资源勘探；管道提升采矿系统；海底采矿车；混流举升泵

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标题作者时间类型操作

Long-term adaptive evolution of

Yong Xiao, Changye Xiao, Feng Zhao

期刊论文

Fault diagnosis of axial piston pumps with multi-sensor data and convolutional neural network

期刊论文

全球变暖使热泵更受欢迎

Chris Palmer

期刊论文

变频驱动并联水泵变压变流量运行优化调度