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期刊论文 12

年份

2023 1

2021 3

2011 1

2009 1

2008 3

2007 1

2001 2

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关键词

中压变频 1

低压变频 1

半主动隔振；双级驱动；动态吸振；可调反共振频率控制器 1

可移动音罩 1

可调混响装置 1

合理电压等级 1

噪声控制 1

大中功率 1

峰值供热能力 1

快速可调节性 1

感应电机 1

房间温度分布 1

新型供暖末端 1

旁路 1

无速度传感器 1

电参数控制；电子设计自动化及方法；光脉冲产生；光控制 1

直接转矩控制 1

空气源热泵 1

结构优化设计 1

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Characteristics of force acting on adjustable axial flow pump blade

WEI Peiru, CHEN Hongxun, LU Wei

《能源前沿（英文）》 2008年第2卷第4期页码 508-513 doi: 10.1007/s11708-008-0054-x

摘要： The internal three-dimensional turbulent flow of adjustable axial-flow pump arrangement was simulated, and the force acting on the blade surface was calculated under different operating conditions. Based on the calculated results, finite element method (FEM) was adopted to analyze stress and strain distributions of the adjustment blade in different operations. Hydraulic moment, centrifugal moment and friction moment which must be conquered by adjusting the blades were also calculated.

关键词： three-dimensional adjustable axial-flow calculated FEM centrifugal

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Restoration of hyper-eutrophic water with a modularized and air adjustable constructed submerged plant

Jinzhong LI, Xueju LI, Shujuan SUN, Xuegong LIU, Suiliang HUANG

《环境科学与工程前沿（英文）》 2011年第5卷第4期页码 573-584 doi: 10.1007/s11783-011-0363-x

摘要： A modularized and air adjustable constructed submerged plant bed (CSPB) which can be used to restore the eutrophic water is introduced in this paper. This plant bed helps hydrophyte grow under poor conditions such as frequently changed water depth, impaired water transparency, algae bloom and substantial duckweed in summer, which are not naturally suitable for growing hydrophyte. This pilot study in Waihuan River of Tianjin, China, revealed that reduction of Chemical Oxygen Demand (COD), Total Nitrogen (TN) and Total Phosphorus (TP) by the use of CSPB could be reached 30%–35%, 35%–40%, 30%–40% respectively in the growing season (from March to October) and 5%–10%, 5%–15%, 7%–20% respectively in the winter (from November to February) when the detention time was 6 d. The relationships between the concentration of COD, TN, TP and the detention time fit the first-order kinetic equation well and the coefficients of determination ( ) were all above 0.9. The attenuation coefficients k of the kinetic equation were a function of the water temperature. When the water temperature was quite low or quite high, was not significantly changed with increasing or decreasing water temperature. While when the temperature was in a moderate range, an increase or decrease of water temperature would lead to a rapid increase or decrease in .

关键词： modularized and air adjustable constructed submerged plant bed water purification eco-restoration techniques aquatic plants eutrophication

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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

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大中功率节能调速传动的合理电压等级

马小亮

《中国工程科学》 2001年第3卷第11期页码 80-84

摘要：

大中功率风机和泵采用变频调速可节约大量电能，大部分功率在0.2～2 MW范围中。我国现在200 kW以上的电机多是中压，现行中压电网多为10 kV，选用10 kV直接变频从技术和经济角度看都不太合理。由于变频器输入侧都有变压器，因此电机和变频器没有必要和电网一致。文章讨论不同功率段的合理电压等级以及在电机电压和电网电压不同情况下当变频器出现故障时如何实现旁路工作。

关键词：大中功率节能调速合理电压等级低压变频中压变频旁路

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Control of wind-induced vibration of long-span bridges and tall buildings

GU Ming

《结构与土木工程前沿（英文）》 2007年第1卷第1期页码 51-62 doi: 10.1007/s11709-007-0005-3

摘要： With the rapid increase in scales of structures, research on controlling wind-induced vibration of large-scale structures, such as long-span bridges and super-tall buildings, has been an issue of great concern. For wind-induced vibration of large-scale structures, vibration frequencies and damping modes vary with wind speed. Passive, semiactive, and active control strategies are developed to improve the wind-resistance performance of the structures in this paper. The multiple tuned mass damper (MTMD) system is applied to control vertical bending buffeting response. A new semiactive lever-type tuned mass damper (TMD) with an adjustable frequency is proposed to control vertical bending buffeting and torsional buffeting and flutter in the whole velocity range of bridge decks. A control strategy named sinusoidal reference strategy is developed for adaptive control of wind-induced vibration of super-tall buildings. Multiple degrees of freedom general building aeroelastic model with a square cross-section is tested in a wind tunnel. The results demonstrate that the proposed strategies can reduce vibration effectively, and can adapt to wind-induced vibration control of large-scale structures in the uncertain dynamic circumstance.

关键词： torsional buffeting large-scale semiactive adjustable frequency building aeroelastic

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New refrigeration system using CO vapor-solid as refrigerant

HUANG Dongping, DING Guoliang, QUACK Hans

《能源前沿（英文）》 2008年第2卷第4期页码 494-498 doi: 10.1007/s11708-008-0070-x

摘要： A refrigerant must be in the vapor-liquid phase in a vapor-compression refrigeration system, therefore, CO cannot be used as a refrigerant for temperatures lower than -56°C because solid CO will form under the triple point temperature of -56°C. A refrigeration system with CO vapor-solid particles as refrigerant is put forward, by which a temperature lower than the triple point is achieved. An adjustable nozzle, a sublimator, a high-pressure regulating valve and a low-pressure regulating valve are used to replace the conventional evaporator. Theoretical cycle analysis of the refrigeration system shows that its COP can be 50% higher than that of the conventional one.

关键词： refrigerant adjustable temperature vapor-compression refrigeration sublimator

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Impact drive rotary precision actuator with piezoelectric bimorphs

ZHANG Hongzhuang, ZENG Ping, HUA Shunming, CHENG Guangming, YANG Zhigang

《机械工程前沿（英文）》 2008年第3卷第1期页码 71-75 doi: 10.1007/s11465-008-0008-3

摘要： An impact drive rotary precision actuator with end-loaded piezoelectric cantilever bimorphs is proposed. According to finite element analysis and experiments of the dynamic characteristics of end-loaded piezoelectric cantilever bimorphs, a specific fixed-frequency and adjustable-amplitude is confirmed to control the actuator. The results show that an actuator excited by fixed-frequency and the adjustable-amplitude ramp voltage waveform works with a large travel range (180°), high resolution (1 ?rad), speed (0.2 rad/min) and heavy-load ability (0.02 Nm). With advantages of high-precision positioning ability, simple structure and only one percent the cost of traditional impact drive mechanisms, the actuator is expected to be widely used in precision industries.

关键词： specific fixed-frequency waveform piezoelectric cantilever mechanisms adjustable-amplitude

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上海大剧院观众厅使用效果评析

李道增,许瑾

《中国工程科学》 2001年第3卷第1期页码 15-21

摘要：

上海率先在我国建成第一座具有国际水平的现代化大剧院。作者对该剧院及设计单位进行了多次访问调研。文章扼要地介绍该剧院观众厅的视线设计、噪声控制、音质设计、声学参数的实测结果以及所采用的可移动音罩、可调混响装置等技术措施，并引用了国内外戏剧界、音乐界著名专家观摩演出后的声学评价以及观众对观众厅使用效果所给出的评分结果。

关键词：观众厅视线设计噪声控制音质设计可移动音罩可调混响装置

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基于无速度传感器直接转矩控制自抗扰交流调速研究

戴巨川, 吴新开,文丽

《中国工程科学》 2009年第11卷第4期页码 91-95

摘要：

在感应电机直接转矩控制(DTC)调速系统中，常规PID速度调节器在电机受到扰动的情况下，需要花费较长时间才能使电机恢复到稳态值。为此，将一种新型的自抗扰控制器(ADRC)引入感应电机直接转矩控制调速系统中，设计速度ADRC调节器代替PID调节器，基于模型参考自适应控制（MRAS）方法设计速度观测器。对比分析了PID与ADRC两种方案下无速度传感器直接转矩控制交流调速系统性能。仿真试验结果表明，采用ADRC后，系统动态响应更快，抗扰动能力更强，在电机参数摄动的情况下，电机运行速度与指令速度偏差更小。

关键词：直接转矩控制自抗扰控制速度观测器无速度传感器感应电机

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频率脉宽实时独立调节的脉冲种子源 Research Articles

杨志伟1,2,吴旭1,2,欧阳德钦2,张恩诚2,孙慧斌1,阮双琛1,2

《信息与电子工程前沿（英文）》 2021年第22卷第10期页码 1379-1389 doi: 10.1631/FITEE.2000294

摘要：研制了一套基于嵌入式芯片的半导体激光器脉冲种子源，光脉冲频率和脉宽能独立实时调节，可在线从增益开关模式切换到准连续运行模式，以实现特定应用所需最佳光参数。为探讨半导体激光光源物理机制，对描述半导体激光腔内光子载流子瞬态变化的速率方程进行数值模拟与分析。之后，确定在设计驱动电路时需要考虑的问题。系统性能评估结果表明，光脉冲频率调节范围是250 Hz至42 MHz，光脉冲输出最窄脉宽为80 ps。脉冲种子源可驱动不同中心波长(1064、1550和1970 nm)半导体激光器，并可同时驱动两台半导体激光器，输出双频光脉冲。该脉冲种子源可作为一般高功率光学系统种子源，具有良好应用价值和广阔市场前景。

关键词：电参数控制；电子设计自动化及方法；光脉冲产生；光控制

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双级驱动半主动隔振系统的可调反共振频率控制器 Research Articles

赵勃1,2,史维佳1,2,王丙泉1,2,谭久彬1,2

《信息与电子工程前沿（英文）》 2021年第22卷第10期页码 1390-1401 doi: 10.1631/FITEE.2000373

摘要：在半导体制造业中，被控对象的动态模型通常是在运动控制前通过扫频方法获得。然而，现有隔离器不能很好隔离扫频时惯性力（频率在0 Hz和固有频率之间）对平台基座的干扰。本文提出一种用于双级驱动半主动隔振系统的可调反共振频率控制器。双级驱动半主动隔振系统具有显著的反共振特性，在一个特定频率——即所谓反共振频率——振幅可降至接近零。本控制器的设计目的是增加一个可调的控制器反共振频率，以充分利用这种独特的反共振特性。实验结果表明了本方案的可行性，闭环传递率从0 Hz到初始反共振频率小于−15 dB。此外，在附加反共振频率附近，闭环传递率小于−30 dB，可通过改变控制器参数实现附加反共振频率在0 Hz至初始反共振频率之间的调节。当平台基座受到脉冲扰动时，使用本文提出的控制器，有效载荷扰动幅度从4 mm/s衰减至0.5 mm/s，降低87.5%。同时，通过跟踪扫频干扰，系统可实时调整反共振频率点，获得良好隔振性能。这表明双级驱动半主动隔振系统和所提控制器可应用于保证超低振动环境，特别是在半导体制造业的扫频工作中。

关键词：半主动隔振；双级驱动；动态吸振；可调反共振频率控制器

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基于平板热管的新型直膨式辐射可调节供暖末端 Article

吴一凡, 孙弘历, 段梦凡, 林波荣, 赵恒昕, 刘兆鸿

《工程（英文）》 2023年第20卷第1期页码 192-207 doi: 10.1016/j.eng.2021.09.019

摘要：

建筑供暖电气化是实现碳中和目标的有效途径。作为一种清洁和可持续的电气化供暖技术，空气源热泵被广泛应用于缺乏集中供暖的地区。然而，现有末端形式存在难以同时实现间歇性和舒适性，且作为主要构件尚未较好地与空气源热泵匹配等问题。因此，本研究提出了一种与空气源热泵结合的新型辐射可调节供暖末端，以实现电气化节能减碳、间歇性和更好的热舒适性。针对辐射供暖末端目前存在三个主要问题，分别是峰值供热量受限、可调节性受限以及难以与空气源热泵结合，本文通过改进末端结构设计（改进A~E）提供了有效解决方案。研究结果表明，新末端能够将峰值供热量提升23.6%，并为使用者提供从10.1%到30.9%的可调辐射比。在此基础上，巧妙地借助平板热管减少了原有直膨式辐射供暖末端的制冷剂管路长度，进而改善了供暖末端的稳定性（利于回油）、间歇性（降低热惯性）和安全性（降低制冷剂泄漏风险）。此外，本文基于新末端提出了一种新的分阶段运行策略，可进一步提升末端的可调节性。本研究可以为电气化供暖助力建筑低碳提供一定参考。

关键词：新型供暖末端空气源热泵结构优化设计峰值供热能力快速可调节性房间温度分布