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The integration model of objective and subjective data of residential indoor environment quality in Northeast China based on structural equation modeling

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Building Simulation 2022年第5期15卷 741-754页

作者： Yu Chen Bin Chen jie deng Siwei Xu Laboratory of Building Environment and New Energy Resource School of Civil engineeringDalian University of TechnologyNo.2 Linggong RoadGanjingzi DistrictDalian 116024China Department of Civil Engineering Zhengzhou UniversityNo.100 Science AvenueZhengzhou 450001China

Currently the indoor environment quality is described or evaluated mainly by the subjective or objective ***,research increasingly has demonstrated that objective and subjective data both had some weaknesses to characterize the indoor environment quality,and they can compensate for each other's relative ***,this study aims to develop an integration model to allow indoor subjective and objective data to be combined based on the structural equation modeling approach,using the Northeast China residential indoor environmental survey *** results indicated that the integration model had a good fit for the survey data,and the model validity was ***,in contrast to the subjective data(R^(2)=0.363)and objective data(R^(2)=0.239),the integrated data(R^(2)=0.553)improved the explanatory power on the satisfaction with the overall indoor ***,this integration model demonstrated that indoor subjective data assigned more weights to the integrated data than the corresponding objective *** association strength of thermal environment and indoor air quality(0.43 or 0.47)was the strongest among the interactions of thermal,air quality,acoustic,and lighting ***,the main contribution of this paper was that it provided a comprehensive model to accomplish the integration of indoor environmental subjective and objective data,promoting the ability to describe and assess the indoor environment quality.

关键词： indoor environment quality integration model subjective data objective data structural equation modeling

Modeling and experiments of a nano-positioning and high frequency scanning piezoelectric platform based on function module actuator

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Science China(Technological Sciences) 2020年第12期63卷 2541-2552页

作者： deng jie LIU YingXiang ZHANG ShiJing LIU JunKao School of Mechatronics and Engineering Harbin Institute of TechnologyHarbin 150001China

A piezoelectric platform using function module actuator is presented to achieve nano-positioning and high frequency scanning in large working range. A function module actuator is designed to produce a pair of orthogonal bending deformations and a longitudinal deformation through partition exciting. The bending deformations are used to actuate the planar motion,while the longitudinal deformation is utilized to dynamically adjust the driving force and broaden the scanning frequency. The dynamic model of the platform system is developed. The open-loop performances of a prototype are first tested: a scan frequency of 308 Hz in a scanning range of 3.368 μm×3.396 μm is measured in direct actuation mode,and the displacement resolution is measured to be 16 nm;maximum speed is measured to be 3.38 mm s^-1 in the inertial actuation mode. Furthermore,the closedloop experiments are carried out and a switching strategy is proposed to obtain the switching of the inertial and direct actuation modes automatically;the platform achieves the scanning with frequency of 300 Hz at the set position.

关键词： piezoelectric actuator function modules nano-positioning platform large working range high frequency scanning

A novel sensitive piezoelectric mass balance used for weightless environment

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Science China(Technological Sciences) 2021年第4期64卷 745-754页

作者： ZHANG ShiJing LIU YingXiang deng jie LIU JunKao School of Mechatronics and Engineering Harbin Institute of TechnologyHarbin 150001China

A novel sensitive piezoelectric mass balance(PEMB)was developed for using in weightless *** mass of the measured object was obtained by detecting the resonant frequency shift of the *** weighing method was illustrated *** order to build the relationship between the resonant frequency shift and the measured mass,the equivalent stiffness coefficient and the equivalent concentrated mass of the PEMB were analyzed *** influence of the structural and material parameters on the sensitivity was analyzed,which provided the design reference to improve the *** finite-element-method(FEM)static analysis of the PEMB was carried out with ANSYS software to investigate its shock ***,the vibration test and calibration experiment effectively verified the theoretical analyses *** developed PEMB holds merits of independence on acceleration field,independence on properties of the measured object and with shock ***,it can be a suitable candidate for measuring mass of solid samples with unknown properties in the weightless environment.

关键词： mass measurement piezoelectric mass balance resonant frequency shift weightless environment

A global solution for robust parameter design of aeronautical electrical apparatus based on interactions analysis and polynomial fitting

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Chinese Journal of Aeronautics 2020年第3期33卷 910-921页

作者： jie deng Xuerong YE Jianhu XUE Guofu ZHAI School of Electrical Engineering and Automation Harbin Institute of TechnologyHarbin 150001China Department of Research and Development Wuxi Newhongtai Electrical Technology Co.Wuxi 214174China

Robust Parameter Design(RPD) has been widely applied for improving quality and reliability of *** of the key drawbacks of applying RPD using Taguchi method is that the stable factors may not be independent of the adjustment factors, resulting in unsatisfactory ***, the Taguchi method cannot guarantee global optimality since the levels set in the experiment are usually discrete to ensure orthogonal *** this paper, robust solutions of the stable factors are obtained via a nonlinear model based on polynomial fitting;while the adjustment factors are obtained via interactions analysis so that they are independent of the stable *** particular, the values of the adjustment factors are determined by output offset compensation so as to achieve robustness of the design *** example on the design of an aeronautical electrical apparatus is presented to illustrate the *** results show that the proposed method can take full advantage of the nonlinearity in the response and achieve the desired outcome.

关键词： Aeronautical electrical apparatus Global optimization Interactions analysis Polynomial fitting Robust parameter design

Temperature Field Simulation and Experimental Study of Anti‑backlash Single‑Roller Enveloping Hourglass Worm Gear

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Chinese Journal of Mechanical Engineering 2020年第4期33卷 77-86页

作者： Shisong Wang Shike Wang jie Wang Xingqiao deng School of Mechanical Engineering Xihua UniversityChengdu 611730China College of Nuclear Technology and Automation Engineering Chengdu University of TechnologyChengdu 610059China

In gear transmission,temperature rise has a non-negligible impact on the accuracy,noise and transmission ***,there is no relevant research on the temperature rise of the anti-backlash single-roller enveloping hourglass worm(ASEHW)*** solve this problem,based on tribology principle and Hertz contact theory,the thermal power calculation method of the ASEHW gear was proposed for the first time and thermal analysis was carried out by Ansys *** bulk temperature of the ASEHW gear under four different rotating speed(300 r/min,600 r/min,900 r/min,1200 r/min)is *** main factors causing temperature rise of the ASEHW gear are analyzed ***,an experimental study is performed to verify the simulation results and validate the theory *** theory presented in this paper provides a solution for the thermal power calculation of ASEHW *** research provides a theoretical basis for further optimization of ASEHW gear.

关键词： Roller enveloping hourglass worm gear Finite element analysis Temperature field

Crystallization and heat transfer of CaO-SiO2-based slag for high-Mn-high-Al steel

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Journal of Iron and Steel Research International 2020年第7期27卷 788-795页

作者： jie Yang deng-fu Chen Miao-yong Zhu College of Material Science and Engineering Chongqing UniversityChongqing400044China School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina

The crystallization and heat transfer of CaO-SiO2-based slag for high-Mn-high-Al steel have been investigated by coupling composition evolution with heat transfer and non-isothermal *** was found that the concentrations of Al2O3 and MnO in the slag were determined by the relative contents of Al and Mn in molten *** temperature of the slag rose with the increase in Al2O3 content first and then fell due to the coupled effects of basicity and Al2O3,and a small amount of MnO cannot change this *** viscosity of slags led to less obvious characterizations of *** crystalline phase analysis suggested that MnO accumulation suppressed the formation of fluorite *** the Al2O3 content increased,the precipitation of cuspidine was replaced by the blocky gehlenite crystals,while the number and the size of nepheline and fluorite crystals both *** to the thickness and the crystallization structure of slags,the heat flux in the slag film first decreased and then increased with higher Al2O3 ***,a new type of CaO-SiO2-based mold slag with high basicity was applied in plant trial,and the change in composition and properties of mold slag was studied.

关键词： High-Mn-high-Al steel Mold slag Al2O3 accumulation Crystallization Heat transfer

Drug-delivery and multifunction possibilities of hypocrellin photosensitizers

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Journal of Innovative Optical Health Sciences 2015年第1期8卷 27-39页

作者： Hong deng jie Xie Jingquan Zhao Beijing National Laboratory for Molecular Sciences(BNLMS)Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences P.O.Box 101No.21st North Street ZhongguancunBeijing 100190P.R.China

Photodynamic therapy(PDT)has been a routine treatment of tumors and some microvascular diseases,but clinically available photosensitizers are still *** all kinds of photo-sensitizers,hypocellins possess the most characteristics of ideal photosensitizers,such as,high photo-activity but low dark toxicity,fast clearance from *** review is focused on two main topics,drug-delivery problem of hypocrellins and how the environment-sensitive fluorescence of bypecrellins was used for recognition of various ***-delivery of hypocrellins was mainly achieved in two strategies一preparing the drugdelivery vehicles and finding quantitatively amphiphilic *** fAuorescence originated from the intramolecular proton transfer is very distinct from other kinds of ***,it was proved that quan-titative hypocrellin ftuorescence could not only reoognize various biomolecules,including proteins,polysaocharides and lipids,but also distinguish the specific binding from nonspedifie binding with some kind of ***,hypocrellin fluorescence was pH *** is known that tumor cells or tses have the features of a large amount of lipid,neonatal collagen,over expression of polysaccharides,and lower pH values compared to normal *** to the relative but not absolute specifcity,further studies on quantitative recognition of various biomolecules at a cellular level,may find a new clue to treat tumors by joint usage of photodynamic diagnosis(PDD)and PDT.

关键词： Hypocrellins photodynamie therapy drug delivery biomolecular recognition

A compact bimorph rotary piezoelectric actuator with customized small power supply

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Science China(Technological Sciences) 2024年第4期67卷 1185-1195页

作者： deng jie LIU DaQing WANG WeiYi LIU YingXiang School of Mechatronics and Engineering Harbin Institute of TechnologyHarbin 150001China

Inertial piezoelectric actuators are widely applied in precision devices with simple structure and accurate ***,existing inertial piezoelectric actuators still face the challenges of rollback motion and bulky power *** this work,an alternate excitation strategy and a customized small power supply for a bimorph rotary piezoelectric actuator(BRPA)are proposed to solve the *** BRPA prototype is designed with a bipedal symmetrical structure,measuring 35 mm in height and 32 mm in diameter,which has a maximum rotation velocity of 0.247 rad/s and a resolution of 0.66μ*** to the bipedal symmetrical structure,the friction directions between the driving feet and the rotor can be coordinated to suppress the *** rollback ratio is almost zero when the phase difference of the exciting signal is set as 180°.The customized power supply is designed and manufactured,whose size is 58 mm×56 mm×46 *** can output signals for the single step mode and the continuous mode,and they are adopted to excite BRPA to achieve a small stroke with one single step and a large stroke with continuous step,***,an experimental system for optical fiber alignment is developed based on the BRPA and the customized small power supply,the experiment has verified the practicability of this work in the precision fields,especially in the miniaturized precision systems.

关键词： inertial piezoelectric actuator customized small power supply single step mode continuous mode rollback suppression miniaturized precision system

Regional characteristic of 7YSZ coatings prepared by plasma spray-physical vapor deposition technique

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Rare Metals 2021年第11期40卷 3308-3315页

作者： Zi-Qian deng jie Mao Min Liu Chun-Ming deng Jing-Tao Ma School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China Guangdong Institute of New Materials National Engineering Laboratory for Modern Materials Surface Engineering Technology and The Key Lab of Guangdong for Modern Surface Engineering TechnologyGuangzhou 510651China School of Materials Science and Engineering Central South UniversityChangsha 410083China

7 YSZ coating was prepared by plasma sprayphysical vapor deposition(PS-PVD) technique based on a specific experimental *** microstructure and deposition properties of 7 YSZ coating along the radius of plasma jet were investigated in *** show that the coating presents regional characteristic in the radial direction,which could be divided into three typical zones:In Zone Ⅰ,the coating is all composed of columnar structures with cauliflower structure,and the coating properties including the surface roughness and deposition efficiency(DE) are almost stable;in Zone Ⅲ,the coating is made up of solid particles,droplet and gas phase mixed without columnar structures;Zone Ⅱ is between Zone Ⅰ and ZoneⅢ, in which there are columns with domed top and small *** on experiment results,a model on the state and distribution of particles in plasma jet was proposed to clarify the regional *** study is helpful to comprehend and control coatings deposition by PS-PVD technique.

关键词： Plasma spray-physical vapor deposition 7YSZ coating Particles distributing Regional characteristic