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| 1 | Closed loop control design for the sense mode of micromachined vibratory gyroscopes显示文摘This paper presents a novel design method of force rebalance control for the sense mode of micromachined vibratory gyroscopes.Specific theoretical deductions are performed to identify a precise linear model of the open loop system of the sense mode,which is crucial for the PI controller design.The frequency responses obtained by experimental tests agree well with those calculated with the theoretical model,indicating the accuracy of the theoretical analyses.Experimental results demonstrate that the bandwidth of the closed loop is extended to 94.8 Hz from 2.3 Hz in the open loop and the quadrature signal is suppressed by about 64 dBV in the closed loop system.The overshoot and stable time in the step response of the closed loop system are measured to be about 15% and 35 ms,respectively.The mode-splitting gyroscope with the closed loop controlled sense mode achieves a scale factor of 41.0 mV/deg/s with nonlinearity of 0.09% and asymmetry of 1%,and a bias instability of 4.0 °/h with angle random walk of 0.171 deg/h1/2. | HE ChunHua ZHAO QianCheng LIU YuXian YANG ZhenChuan YAN GuiZhen | 2013 | Science China(Technological Sciences)2013，56，5： | 10 |
| 2 | Novel hierarchical structure of MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) composites for dramatically enhanced electromagnetic absorbing properties显示文摘In order to prevent the microwave leakage and mutual interference,more and more microwave absorbing devices are added into the design of electronic products to ensure its routine operation.In this work,we have successfully prepared MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) hierarchical composites by one-pot hydrothermal method and focused on the relationship between structures and electromagnetic absorbing properties.Supported by comprehensive characterizations,M0S_(2) nanosheets were proved to be anchored on the surface and interlayer of Ti_(3)C_(2)T_(x) through a hydrothermal process.Additionally,TiO_(2) nanoparticles were obtained in situ.Due to these hierarchical structures,the MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) composites showed greatly enhanced microwave absorbing performance.The MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) composites exhibit a maximum reflection loss value of -33.5 dB at 10.24 GHz and the effective absorption bandwidth covers 3.1GHz(13.9-17 GHz)at the thickness of 1.0 mm,implying the features of wide frequency and light weight.This work in the hierarchical structure of MoS_(2)/TiO_(2)/Ti_(3)C_(2)T_(x) composites opens a promising door to the exploration of constructing extraordinary electromagnetic wave absorbents. | Heng DU Qipeng ZHANG Biao ZHAO Frank MARKEN Qiancheng GAO Hongxia LU Li GUAN Hailong WANG Gang SHAO Hongliang XU Rui ZHANG Bingbing FAN | 2021 | Journal of Advanced Ceramics2021，10，5： | 4 |
| 3 | Three-point bending of honeycomb sandwich beams with facesheet perforations显示文摘A novel square honeycomb-cored sandwich beam with perforated bottom facesheet is investigated under threepoint bending,both analytically and numerically.Perforated square holes in the bottom facesheet are characterized by the area ratio of the hole to intact facesheet(perforation ratio).While for large-scale engineering applications like the decks of cargo vehicles and transportation ships,the perforations are needed to facilitate the fabrication process(e.g.,laser welding)as well as service maintenance,it is demonstrated that these perforations,when properly designed,can also enhance the resistance of the sandwich to bending.For illustration,fair comparisons among competing sandwich designs having different perforation ratios but equal mass is achieved by systematically thickening the core webs.Further,the perforated sandwich beam is designed with a relatively thick facesheet to avoid local indention failure so that it mainly fails in two competing modes:(1)bending failure,i.e.,yielding of beam cross-section and buckling of top facesheet caused by bending moment;(2)shear failure,i.e.,yielding and buckling of core webs due to shear forcing.The sensitivity of the failure loads to the ratio of core height to beam span is also discussed for varying perforation ratios.As the perfo-ration ratio is increased,the load of shear failure increases due to thickening core webs,while that of bending failure decreases due to the weakening bottom facesheet.Design of a sandwich beam with optimal perforation ratio is realized when the two failure loads are equal,leading to significantly enhanced failure load(up to 60%increase)relative to that of a non-perforated sandwich beam with equal mass. | Pengbo Su Bin Han Zhongnan Zhao Qiancheng Zhang Tian Jian Lu | 2018 | Acta Mechanica Sinica2018，34，4： | 3 |
| 4 | Strength optimization of ultralight corrugated-channel-core sandwich panels显示文摘Novel ultralight sandwich panels, which are comprised of corrugated channel cores and are faced with two identical solid sheets,subjected to generalized bending are optimally designed for minimum mass. A combined analytical and numerical(finite element) investigation is carried out. Relevant failure mechanisms such as face yielding, face buckling, core yielding and core buckling are identified, the load for each failure mode derived, and the corresponding failure mechanism maps constructed. The analytically predicted failure loads and failure modes are validated against direct finite element simulations, with good agreement achieved. The optimized corrugated channel core is compared with competing topologies for sandwich construction including corrugations, honeycombs and lattice trusses, and the superiority of the proposed structure is demonstrated. Corrugated-channel-core sandwich panels hold great potential for multifunctional applications, i.e., simultaneous load bearing and active cooling. | ZHAO ZhenYu LI Lang WANG Xin ZHANG QianCheng HAN Bin LU TianJian | 2019 | Science China(Technological Sciences)2019，62，8： | 2 |
| 5 | Stability of phenolic compounds and drying characteristics of apple peel as affected by three drying treatments显示文摘To realize high-value utilization of discarded apple peel,this study investigated the effects of three selected commercial drying methods on drying kinetics,microstructure,color,phenolic stability and antioxidant capacity of apple peel.Apple peel was dehydrated by hot air drying(AD)at 75,65 and 55℃,heat pump drying(HP)at 65,55 and 45℃,and vacuum freeze-drying(FD),respectively.The results showed that HP was superior to AD and FD in terms of drying rate.In addition,HP at 65℃provided high-quality dried apple peel due to less browning and brighter appearance,the highest retention of total phenolics(29.35 mg/g)and the strongest antioxidant activities,with the highest ABTS and FRAP value of 127.15 and 219.57μmol TE/g,respectively.The content of the six major individual phenolics,i.e.caffeic acid,(-)-epicatechin,hyperoside,rutin,phlorizin and quercitrin,were found to be the highest in HP dried samples.Interestingly,the content of rutin was even increased after HP compared to the fresh sample.Considering drying efficiency,organoleptic quality and phenolic stability of the products,HP at 65°C is suggested for drying of apple peel. | Qiancheng Ma Jinfeng Bi Jianyong Yi Xinye Wu Xuan Li Yuanyuan Zhao | 2021 | Food Science and Human Wellness2021，10，2： | 2 |
| 6 | Dose-dependent effects of apple pectin on alleviating high fat-induced obesity modulated by gut microbiota and SCFAs显示文摘Recently,pectin has been used as an alternative for commercial prebiotic products to modulate gut microbiota.In this study,the standard diet(Chow group)and high fat diet containing 0%(HF group),1%,3%,5%,8% or 12%(m/m)apple pectin(HF-P group)were offered ad libitum for 8 weeks to 4-week C57BL/6J mice(n=10/group).Results showed that body weight gain(R^(2)=–0.990),subcutaneous adipose accumulation(R^(2)=–0.930),serum triglyceride elevation(R_(2)=–0.879),acetate(R^(2)=0.955)and propionate concentration reduction(R2=0.985)were suppressed by pectin from 1% to 12%,indicating dose response to pectin consumption.Moreover,abundance of obesity-related bacteria Coriobacteriaceae,and pectin-degradating bacteria,Faecalibaculum,Ruminococcus were significantly increased with pectin dosage increased,and the R^(2) were 0.936,0.963 and 0.937,respectively.Besides,attenuations for colonic injury and liver steatosis were observed after adding 5% and 8% pectin,respectively.This study confirmed the dose-sensitive manner of pectin to alleviate HF-induced obesity by modulating gut microbiota and enhancing short-chain fatty acids production. | Yuanyuan Zhao Jinfeng Bi Jianyong Yi Jian Peng Qiancheng Ma | 2022 | Food Science and Human Wellness2022，11，1： | 1 |
| 7 | An experimental investigation on decoupling performance for a lateral axis micromachined gyroscope with varying environmental parameters显示文摘This paper carries out an experiment study of decoupling performance for a novel lateral axis micromachined gyroscope with varying environmental parameters. The non-ideal mathematical model for the coupling mechanism of the gyroscope is established through the gyro dynamic response matrix. The coupling components varying with ambient pressure and temperature induced by stiffness coupling,damping coupling and electrostatic force coupling are semi-analytically discussed. The overall coupling ratio is evaluated via experiments in the custom-built installation. The testing results show that the decoupling performance of the gyroscope is sensitive to the environmental parameters and all the non-ideal errors are determined as a function of ambient pressure and temperature. The coupling error varies from 0.05% to 0.25% within the pressure range of 100 Pa-100 kPa. The characteristics of coupling with temperature are measured from 20°C to 100°C with a variation from 0.35% to 0.41%. The results also indicate that within the range of measured ambient pressure and temperature,the minimum coupling ratio occurs at 100 Pa and room temperature. The overall performance of the gyroscope is tested under the pressure of about 2000 Pa and room temperature to achieve a relatively low coupling ratio. The scale factor is measured to be 7.8 mV(°) -1 s-1 with nonlinearity about 0.45% in the full-scale range of 600(°) s-1. The short-term bias stability is approximately 0.06(°) s-1(1σ) for 20 min with noise equivalent angular rate evaluated to be 0.077(°) s-1 Hz-1/2. | CUI Jian LIU XueSong GUO ZhongYang ZHAO QianCheng LIN LongTao YANG ZhenChuan HAO YiLong YAN GuiZhen | 2011 | Science China(Technological Sciences)2011，54，12： | 1 |
| 8 | Silicon-on- sapphire waveguides design for mid-IR evanescent field absorption gas sensors显示文摘 | Huang Yuewang Kalyoncu S K Zhao Qiancheng | 2014 | Optics Communications2014，313，： | 1 |
| 9 | Highly Efficient Heavy-Metal-Ion Removal from Shellfish Processing Liquid with Low Protein and Polysaccharide Loss by Hybrid Mesoporous Silica Diol-APDC-SBA15显示文摘Heavy metal ions in shellfish products are harmful to human health,and their removal with low nutrient loss remains challenging.Herein,a new type of mesoporous silica(SBA15),modified internally with ammonium pyrrolidine dithiocarbamate(APDC)and externally with alkyl-diol groups,which was named as Diol-APDC-SBA15,was successfully developed and characterized by powder X-ray diffraction patterns,nitrogen adsorption,and Fourier transform infrared spectroscopy.The solutions with lead,chromium,cadmium,and copper were used to investigate the adsorption capacity of Diol-APDC-SBA15.Diol-APDC-SBA15 was adopted to remove heavy metals from cooking liquids of clams(Ruditapes philippinarum),hydrolysate liquids of oysters(Ostrea gigas Thunberg),and polysaccharide solution from the cooking liquid of R.philippinarum.The efficiencies of removing heavy metal ions and the loss rates of proteins and polysaccharides were examined.The results showed that the adsorption capacities of Diol-APDCSBA15 for Pb,Cr,Cd,and Cu in standard heavy-metal solutions were 161.4,166.1,29.6,and 60.2mgg^(−1),respectively.The removal efficiency of Diol-APDC-SBA15 for Pb in the three shellfish processing liquids ranged from 60.5%to 99.6%.The Cr removal efficiency was above 99.9%in the oyster hydrolysate liquid.Meanwhile,the percentages of polysaccharide loss were 5.5%and 3.7%in the cooking liquid of clam and polysaccharide solution,respectively,and the protein loss was 1.2%in the oyster hydrolysate liquid.Therefore,the Diol-APDC-SBA15 material exhibits a great potential application in the removal of heavy metals from shellfish processing liquids with low losses of proteins and polysaccharides. | QI Yanxia SONG Yang LIU Chang QI Shizhe WANG Haibo CAO Jijuan ZHAO Qiancheng | 2023 | Journal of Ocean University of China2023，22，1： | 1 |
| 10 | An electrical-coupling-suppressing MEMS gyroscope with feed-forward coupling compensation and scalable fuzzy control显示文摘This paper proposes a novel electrical coupling suppressing and drive closed loop control method for a MEMS gyroscope with feed-forward coupling compensation(FCC) and scalable fuzzy control. Theoretical analysis of the novel method is described in detail, and it is very simple to realize. Experimental results demonstrate that the electrical anti-resonant peaks located at the amplitude-frequency and phase-frequency responses are both eliminated by FCC control, and the height of the amplitude resonant peak increases more than 24 d B over 1800 Hz span. In addition, the overshoot of the transient response with scalable fuzzy control is smaller than 5%, and the settling time is less than 15 ms. The stabilities of the resonant amplitude and phase of the drive-mode velocity with scalable fuzzy control are about 15 ppm and 11 ppm, respectively. The scale factor of the gyroscope is measured to be 33.98 m V/deg/s with nonlinearity about 0.08%. Furthermore, the bias instability of the gyroscope with wavelet analysis is improved to be about 6.3 deg/h from 25.2 deg/h of the gyroscope without wavelet analysis. | Chunhua HE Jimeng ZHANG Qiancheng ZHAO Qinwen HUANG Zhenchuan YANG Dacheng ZHANG Guizhen YAN | 2017 | Science China(Information Sciences)2017，60，4： | 1 |
| 11 | Analyzing by simulation to evaluate the method of measuring screw rotors with CMM显示文摘 | ZHAO Qiancheng LU Changyou XU Qiao | 2010 | Applied Mechanics and Materials2010，36，： | 1 |
| 12 | A novel robust design method for the sense mode of a MEMS vibratory gyroscope based on fuzzy reliability and Taguchi design显示文摘This paper proposes a novel robust design method for the sense mode of a MEMS vibratory gyroscope based on fuzzy reliability and Taguchi design. The principles of fuzzy reliability and Taguchi design are both introduced and described in detail. Experimental results demonstrate that the signal to noise ratio of the robust design scheme is better than those of the other experimental schemes.Over the full temperature range from -40 to 80°C, the temperature sensitivities of phase margin, gain margin, sensitivity margin,the maximum amplitude of open loop system, bandwidth of closed loop system, and the performance function of the robust design system are all smaller than those of the original design system. Meanwhile, the temperature sensitivity of the bandwidth of the robust design system is improved to 126 from 1075 ppm/°C. Moreover, the bias drift over the full temperature range of the robust design system is improved to 61°/h from 179°/h. | HE ChunHua ZHAO QianCheng HUANG QinWen LIN LongTao YANG ZhenChuan ZHANG DaCheng YAN GuiZhen | 2017 | Science China(Technological Sciences)2017，60，2： | 1 |
| 13 | Open-Circuit Faults Diagnosis in Direct-Drive PMSG Wind Turbine Converter显示文摘The condition monitoring and fault diagnosis have been identified as the key to achieving higher availabilities of wind turbines.Numerous studies show that the open-circuit fault is a significant contributor to the failures of wind turbine converter.However,the multiple faults combinations and the influence of wind speed changes abruptly,grid voltage sags and noise interference have brought great challenges to fault diagnosis.Accordingly,concerning the open-circuit fault of converters in direct-driven PMSG wind turbine,a diagnostic method for multiple open-circuit faults is proposed in this paper,which is divided into two tasks:The first one is the fault detection and the second one is the fault localization.The detection method is based on the relative current residuals after exponential transformation and on an adaptive threshold,and the localization method is based on the average values of fault phase currents.The scheduled diagnosis method is available to both the generator-side converter and the grid-side converter,allowing to detect and locate single and double open-circuit faults.For validating this,robustness test and multiple open-circuit faults diagnosis are presented in a 2-MW direct-driven PMSG wind turbine system,the results validate the reliability and effectiveness of the proposed method. | Wei Zhang Qihui Ling Qiancheng Zhao Hushu Wu | 2021 | Energy Engineering2021，118，5： | 0 |
| 14 | Sol-gel-based porous Ti-doped tungsten oxide films for high-performance dual-band electrochromic smart windows显示文摘Dual-band electrochromic smart windows(DESWs)with independent control of the transmittance of near-infrared and visible light show great potential in the application of smart and energy-saving buildings.The current strategy for building DESWs is to screen materials for composite or prepare plasmonic nanocrystal films.These rigorous preparation processes seriously limit the further development of DESWs.Herein,we report a facile and effective sol-gel strategy using a foaming agent to achieve porous Ti-doped tungsten oxide film for the high performance of DESWs.The introduction of foaming agent polyvinylpyrrolidone during the film preparation can increase the specific surface area and free carrier concentration of the films and enhance their independent regulation ability of near-infrared electrochromism.As a result,the optimal film shows excellent dual-band electrochromic properties,including high optical modulation(84.9%at 633 nm and 90.3%at 1200 nm),high coloration efficiency(114.9 cm^(2) C^(-1) at 633 nm and 420.3 cm^(2) C^(-1) at 1200 nm),quick switching time,excellent bistability,and good cycle stability(the transmittance modulation losses at 633 and 1200 nm were 11%and 3.5%respectively after 1000 cycles).A demonstrated DESW fabricated by the sol-gel film showed effective management of heat and light of sunlight.This study represents a significant advance in the preparation of dual-band electrochromic films,which will shed new light on advancing electrochromic technology for future energy-saving smart buildings. | Qiancheng Meng Sheng Cao Juquan Guo Qingke Wang Ke Wang Tao Yang Ruosheng Zeng Jialong Zhao Bingsuo Zou | 2023 | Journal of Energy Chemistry2023，，2： | 0 |
| 15 | Investigation of Inverter Temperature Prediction Model in Wind Farm Based on SCADA Data显示文摘The inverter is one of the key components of wind turbine,and it is a complex circuit composed of a series of components such as a variety of electronic components and power devices.Therefore,it is difficult to accurately identify the operation states of inverter and some problems regarding its own circuit,especially in the early stages of failure.However,if the inverter temperature prediction model can be established,the early states can be identified through the judgment of the output temperature.Accordingly,considering whether the inverter heats up normally from the perspective of heat dissipation,a method for the early operation state identification of the inverter is provided in this paper.A variable selection method based on fusion analysis of correlation and physical relationship is adopted to extract variables as input variables,which have high correlation with inverter temperature.Then multi-input and multi-output temperature prediction model of inverter is established based on a nonlinear autoregressive exogenous model(NARX)network,and the prediction temperature residual is used as the real-time standard to evaluate the inverter states.For validating this,the validity and reliability of the established temperature prediction model are verified through case analysis,and the performance comparison with various models demonstrates that the proposed method has higher accuracy.The construction method of the prediction model can be used for reference to other aspects of wind turbine.All these bring huge benefits to wind energy industry. | Qihui Ling Wei Zhang Qiancheng Zhao Juchuan Dai | 2022 | Energy Engineering2022，119，1： | 0 |
| 16 | Effects of laser powder bed fusion process parameters on microstructure and hydrogen embrittlement of high-entropy alloy显示文摘Hydrogen embrittlement behavior, micro-deformation, and crack propagation mechanism of CoCrFeNiMn high-entropy alloy (HEA) fabricated by laser powder bed fusion (LPBF) under different parameters were investigated by slow strain rate tensile tests (at room temperature) with/without electrochemical hydrogen pre-charging. The LPBF CoCrFeNiMn HEA shows excellent resistance to hydrogen embrittlement. Unsuitable LPBF parameters are accompanied by many microcracks and holes, resulting in a slight decrease in the hydrogen embrittlement resistance of the material. The electron backscatter diffraction (EBSD), electron channeling contrast image (ECCI) techniques, and transmission electron microscope (TEM) were carried out to research the main influencing factors of hydrogen on the deformation mechanism and crack propagation. Compared with un-charged samples, a larger number of deformation twins (DTs) appear in the deformation process of hydrogen-charged LPBF CoCrFeNiMn, attributing to the reduction of stacking fault energy (SFE) due to the ingress of hydrogen. The nano DTs and crossing twin system contribute to the extra work hardening, and a strain hardening platform is observed for all hydrogen-charged samples, resulting in the increase of strain hardening rate or the mitigation of the loss of strain hardening. Although unsuitable process parameters will trigger fabrication defects and reduce mechanical properties, the cellular structure can bring a hydrogen-induced strain hardening platform for LPBF CoCrFeNiMn to reduce the damage caused by hydrogen embrittlement. | Hongxu Cheng Hong Luo Zhimin Pan Xuefei Wang Qiancheng Zhao Yu Fu Xiaogang Li | 2023 | Journal of Materials Science & Technology2023，，24： | 0 |
| 17 | Operation State of theWind Turbine Pitch System Based on Fuzzy Comprehensive Evaluation显示文摘To ensure wind turbine(WT)safe operations and improve the utilization rate of wind energy,effective evaluation of the operation state of the pitch system is critical.Therefore,a new method was proposed to evaluate the operation state of the pitch system of WT based on fuzzy comprehensive evaluation.Firstly,based on SCADA data,the working state of the pitch system under rated power state and power state of WT were analyzed.Secondly,through the analysis of characteristic parameters and physical mechanism of the pitch system,the consistency principle of characteristic parameters,the stability principle of power under rated state,and the stability principle of blade angle underpowered state were obtained.Next,based on the aforementioned principles,the evaluation indexes were established,and the fuzzy comprehensive evaluation method was used to establish the operation state evaluation model of the pitch system under rated power state and under power state of the WT.Finally,an example was provided to verify the effectiveness of the method.The evaluation model established in this study can be used as a technical reference for the online monitoring of WT pitch systems to ensure the safe and stable operation of WTs. | Anfeng Zhu Qiancheng Zhao LinGui Tianlong Yang Xuebing Yang | 2023 | Energy Engineering2023，120，2： | 0 |
| 18 | CD44-Specific Targeting Nanoreactors with Glutathione Depletion for Magnifying Photodynamic Tumor Eradication显示文摘Photodynamic therapy(PDT)is an efficacious noninvasive therapeutic modality that utilizes nontoxic photosensitizers(PSs)to transform oxygen into highly cytotoxic reactive oxygen species(ROS)under specific light irradiation.However,low intratumoral accumulation capacity and the reduced ROS production caused by excessive glutathione(GSH,a scavenger of ROS)in the tumor microenvironment(TME)immensely limit PDT therapeutic efficacy. | Chao Shi Xiao Zhou Qiancheng Zhao Zhen Zhang He Ma Yang Lu Zhibin Huang Wen Sun Jianjun Du Jiangli Fan Xiaojun Peng | 2022 | CCS Chemistry2022，4，8： | 0 |
| 19 | Effective bias warm-up time reduction for MEMS gyroscopes based on active suppression of the coupling stiffness显示文摘Bias warm-up time is the time required for MEMS gyroscopes to reach a relatively stable state with specified performance after the power supply is turned on,is a critical factor for short time-of-flight navigation applications.This paper demonstrates an effective method to improve the bias warm-up time of a custom-designed MEMS gyroscope operating in split-mode based on open-loop readout scheme with active suppression of the coupling stiffness(ASCS).A semi-quantitative mathematical model for the temperature sensitivity of the bias is established that indicates the resonant frequency of the primary mode,the frequency difference and the coupling stiffness between the primary and sense modes together with the demodulation phase error,and these are the main factors that affect bias warmup time.Of all these parameters,the stiffness coupling variation contributes the most to the start-up warm-up time,followed by the phase error drift.The experimental result shows that the bias warm-up time decreases from 2000 to 2 s under the condition that the bias stability(1σ)falls into about 10 deg/h within an hour of testing time using closedloop control for the coupling stiffness,resulting in a reduction of three orders of magnitude.In addition,the bias instability of the gyroscope is improved two-fold from 4 to 2 deg/h with ASCS. | Jian Cui Qiancheng Zhao Guizhen Yan | 2019 | Microsystems & Nanoengineering2019，5，1： | 0 |
| 20 | 异源表达的Piezo1-ASIC1嵌合体介导与Piezo1不同特性的机械敏感电流显示文摘文章简介Piezo1代表哺乳动物机械敏感阳离子通道的原型成员,然而其分子机制尚不清楚。在最近的一项研究中,该课题组发现了Piezo1包含最后两次跨膜区的羧基末端区间(氨基酸2189-2547)形成其孔道模块区,并系统鉴定了其围绕孔道的跨膜区及决定孔道特性的关键氨基酸。 | Qiancheng Zhao Kun Wu Shaopeng Chi Jie Geng 肖百龙 | 2018 | 科学新闻2018，0，4： | 0 |
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