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| 1 | Dynamic modeling of a hose-drogue aerial refueling system and integral sliding mode backstepping control for the hose whipping phenomenon显示文摘Dynamic modeling of a hose-drogue aerial refueling system(HDARS) and an integral sliding mode backstepping controller design for the hose whipping phenomenon(HWP) during probe-drogue coupling are studied. Firstly, a dynamic model of the variable-length hose-drogue assembly is built for the sake of exploiting suppression methods for the whipping phenomenon.Based on the lumped parameter method, the hose is modeled by a series of variable-length links connected with frictionless joints. A set of iterative equations of the hose's three-dimensional motion is derived subject to hose reeling in/out, tanker motion, gravity, and aerodynamic loads accounting for the effects of steady wind, atmospheric turbulence, and tanker wake. Secondly,relying on a permanent magnet synchronous motor and high-precision position sensors, a new active control strategy for the HWP on the basis of the relative position between the tanker and the receiver is proposed. Considering the strict-feedback configuration of the permanent magnet synchronous motor, a rotor position control law based on the backstepping method is designed to insure global stability. An integral of the rotor position error and an exponential sliding mode reaching law of the current errors are applied to enhance control accuracy and robustness. Finally,the simulation results show the effectiveness of the proposed model and control laws. | Wang Haitao Dong Xinmin Xue Jianping Liu Jiaolong | 2014 | Chinese Journal of Aeronautics2014，27，4： | 17 |
| 2 | Real-time drogue recognition and 3D locating for UAV autonomous aerial refueling based on monocular machine vision显示文摘Drogue recognition and 3D locating is a key problem during the docking phase of the autonomous aerial refueling(AAR). To solve this problem, a novel and effective method based on monocular vision is presented in this paper. Firstly, by employing computer vision with red-ring-shape feature, a drogue detection and recognition algorithm is proposed to guarantee safety and ensure the robustness to the drogue diversity and the changes in environmental conditions, without using a set of infrared light emitting diodes(LEDs) on the parachute part of the drogue. Secondly, considering camera lens distortion, a monocular vision measurement algorithm for drogue 3D locating is designed to ensure the accuracy and real-time performance of the system,with the drogue attitude provided. Finally, experiments are conducted to demonstrate the effectiveness of the proposed method. Experimental results show the performances of the entire system in contrast with other methods, which validates that the proposed method can recognize and locate the drogue three dimensionally, rapidly and precisely. | Wang Xufeng Kong Xingwei Zhi Jianhui Chen Yong Dong Xinmin | 2015 | Chinese Journal of Aeronautics2015，28，6： | 15 |
| 3 | Constrained adaptive neural network control of an MIMO aeroelastic system with input nonlinearities显示文摘A constrained adaptive neural network control scheme is proposed for a multi-input and multi-output(MIMO) aeroelastic system in the presence of wind gust,system uncertainties,and input nonlinearities consisting of input saturation and dead-zone.In regard to the input nonlinearities,the right inverse function block of the dead-zone is added before the input nonlinearities,which simplifies the input nonlinearities into an equivalent input saturation.To deal with the equivalent input saturation,an auxiliary error system is designed to compensate for the impact of the input saturation.Meanwhile,uncertainties in pitch stiffness,plunge stiffness,and pitch damping are all considered,and radial basis function neural networks(RBFNNs) are applied to approximate the system uncertainties.In combination with the designed auxiliary error system and the backstepping control technique,a constrained adaptive neural network controller is designed,and it is proven that all the signals in the closed-loop system are semi-globally uniformly bounded via the Lyapunov stability analysis method.Finally,extensive digital simulation results demonstrate the effectiveness of the proposed control scheme towards flutter suppression in spite of the integrated effects of wind gust,system uncertainties,and input nonlinearities. | Gou Yiyong Li Hongbo Dong Xinmin Liu Zongcheng | 2017 | Chinese Journal of Aeronautics2017，30，2： | 7 |
| 4 | Drogue detection for autonomous aerial refueling based on convolutional neural networks显示文摘Drogue detection is a fundamental issue during the close docking phase of autonomous aerial refueling(AAR). To cope with this issue, a novel and effective method based on deep learning with convolutional neural networks(CNNs) is proposed. In order to ensure its robustness and wide application, a deep learning dataset of images was prepared by utilizing real data of ‘‘Probe and Drogue' aerial refueling, which contains diverse drogues in various environmental conditions without artificial features placed on the drogues. By employing deep learning ideas and graphics processing units(GPUs), a model for drogue detection using a Caffe deep learning framework with CNNs was designed to ensure the method's accuracy and real-time performance. Experiments were conducted to demonstrate the effectiveness of the proposed method, and results based on real AAR data compare its performance to other methods, validating the accuracy, speed, and robustness of its drogue detection ability. | Wang Xufeng Dong Xinmin Kong Xingwei Li Jianmin Zhang Bo | 2017 | Chinese Journal of Aeronautics2017，30，1： | 6 |
| 5 | Modeling and simulation of a time-varying inertia aircraft in aerial refueling显示文摘Studied in this paper is dynamic modeling and simulation application of the receiver aircraft with the time-varying mass and inertia property in an integrated simulation environment which includes two other significant factors, i.e., a hose–drogue assembly dynamic model with the variable-length property and the wind effect due to the tanker's trailing vortices. By extending equations of motion of a fixed weight aircraft derived by Lewis et al., a new set of equations of motion for a receiver in aerial refueling is derived. The equations include the time-varying mass and inertia property due to fuel transfer and the fuel consumption by engines, and the fuel tanks have a rectangle shape rather than a mass point. They are derived in terms of the translational and rotational position and velocity of the receiver with respect to an inertial reference frame. A linear quadratic regulator(LQR) controller is designed based on a group of linearized equations under the initial receiver mass condition. The equations of motion of the receiver with a LQR controller are implemented in the integrated simulation environment for autonomous approaching and station-keeping of the receiver in simulations. | Wang Haitao Dong Xinmin Xue Jianping Liu Jiaolong Wang Jian | 2016 | Chinese Journal of Aeronautics2016，29，2： | 4 |
| 6 | Two novel robust adaptive parameter estimation methods with prescribed performance and relaxed PE condition显示文摘Dear editor, In many industrial applications,the systems under study are often subject to parametric uncertainties.These uncertainties,which may arise from aging,hardware damages and environmental conditions,can degrade the system's performance [1].To overcome these uncertainties, the problem of parameter estimation has been of considerable interest.Classical parameter estimation methods were reported,including least square and recursive least square,gradient descent method,projection method,and improvements such as e-modification,a-modification,deadzone- modification,Kalman filter-based modification. | Xiaojun DUAN Jianhui ZHI Huaimin CHEN Xinmin DONG | 2018 | Science China(Information Sciences)2018，61，12： | 3 |
| 7 | Endoglin promoter hypermethylation identifies a field defect in human primary esophageal cancer显示文摘 | Zhe Jin Zhenfu Zhao Yulan Cheng Ming Dong Xiaojing Zhang Liang Wang Xinmin Fan Xianling Feng Yuriko Mori Stephen J. Meltzer | 2013 | Cancer2013，，20： | 2 |
| 8 | Division and formation mechanism of coalbed methane reservoir in Huainan Coalfield,Anhui Province,China显示文摘The coalbed methane (CBM) reservoir is the basic geological unit of CBM storing and CBM resource developing. The forming conditions of the CBM reservoir include coal thickness, coal rank, seam buried depth, caprock, and geological structure. The division of a CBM reservoir in the Huainan coalfield is mainly based on the geological structure form and seam buried depth. According to the Fufeng nappe and the secondary structures of Huainan syn-clinorium, seven CBM reservoirs are divided in the Huainan Coalfield, such as Caijiagang, and the dynamic mechanism of CBM forming is analyzed. The structural position where the CBM reservoir is located has the important controlling role on the features of CBM reservoir. | Xinmin Zhang Jianwu Li Baoshan Han Mintao Dong | 2005 | Chinese Science Bulletin2005，50，S1： | 2 |
| 9 | Late Mesozoic intrusive complexes in the coastal area of Fujian, SE China: The significance of the gabbro-diorite-granite association显示文摘 | Xu Xisheng Dong Chuanwan Li Wuxian Zhou Xinmin | 1999 | Lithos1999，46，2： | 1 |
| 10 | A mechanical-electrical finite element method model for predicting contact resistance between bipolar plate and gas diffusion layer in PEM fuel cells 显示文摘 | Lai Xinmin Liu Dong'an Peng Linfa | 2008 | Journal of Power Sources2008，，182： | 1 |
| 11 | Progress and challenges in automatic aerial refueling显示文摘 | DONG Xinmin XU Yuejian CHEN Bo | 2008 | Journal of Air Force Engineering Uni- versity (Natural Science Edition)2008，9，6： | 1 |
| 12 | Effect of Assembly Error of Bipolar Plate on the Contact Pressure Distribution and Stress Failure of Membrane Electrode Assembly in Proton Exchange Membrane Fuel Cell显示文摘 | Liu Dong'an Peng Linfa Lai Xinmin | 2010 | Journal of Power Sources2010，195，： | 1 |
| 13 | Facial Features of an Air Gun Array Wavelet in the Time-Frequency Domain Based on Marine Vertical Cables显示文摘Air gun arrays are often used in marine energy exploration and marine geological surveys.The study of the single bubble dynamics and multibubbles produced by air guns interacting with each other is helpful in understanding pressure signals.We used the van der Waals air gun model to simulate the wavelets of a sleeve gun of various offsets and arrival angles.Several factors were taken into account,such as heat transfer,the thermodynamically open quasi-static system,the vertical rise of the bubble,and air gun post throttling.Marine vertical cables are located on the seafloor,but hydrophones are located in seawater and are far away from the air gun array vertically.This situation conforms to the acquisition conditions of the air gun far-field wavelet and thus avoids the problems of ship noise,ocean surges,and coupling.High-quality 3D wavelet data of air gun arrays were collected during a vertical cable test in the South China Sea in 2017.We proposed an evaluation method of multidimensional facial features,including zeropeak amplitude,peak-peak amplitude,bubble period,primary-to-bubble ratio,frequency spectrum,instantaneous amplitude,instantaneous phase,and instantaneous frequency,to characterize the 3D air gun wave field.The match between the facial features in the field and simulated data provides confidence for the use of the van der Waals air gun model to predict air gun wavelet and facial features to evaluate air gun array. | ZHANG Dong LIU Huaishan XING Lei WEI Jia WANG Jianhua ZHOU Heng GE Xinmin | 2021 | Journal of Ocean University of China2021，20，6： | 1 |
| 14 | Flow channel shape optimum design for hydroformed metal bipolar plate in PEM fuel cell显示文摘 | Peng Linfa Lai Xinmin Liu Dong′an | 2008 | Journal of Power Sources2008，178，： | 1 |
| 15 | Effect of assembly error of bipolar plate on the contact pressure distribution and stress failure of membrane electrode assembly in proton exchange membrane fuel cell显示文摘 | Liu Dong'an Peng Linfa Lai Xinmin | | 0，，13： | 1 |
| 16 | Heterostructured crystallization mechanism and its effect on enlarging the processing window of Fe-based nanocrystalline alloys显示文摘The harsh melt-spinning and annealing processes of high saturation magnetization nanocrystalline softmagnetic alloys are the biggest obstacles for their industrialization. Here, we proposed a novel strategy to enlarge the processing window by annealing the partially crystallized precursor ribbons via a heterostructured crystallization process. The heterostructured evolution of Fe_(84.75)Si_(2)B_(9)P_(3)_(C0.5)Cu_(0.75)(at.%)alloy ribbons with different spinning rate were studied in detail, to demonstrate the gradient nucleation and grain refinement mechanisms. The nanocrystalline alloys made with industrially acceptable spinning rate of 25-30 m/s and normal annealing process exhibit excellent magnetic properties and fine nanostructure. The small quenched-in crystals/clusters in the free surface of the low spinning rate ribbons will not grow to coarse grains, because of the competitive grain growth and shielding effect of metalloid elements rich interlayer with a high stability. Avoiding the precipitation of quenched-in coarse grains in precursor ribbons is thus a new criterion for the composition and process design, which is more convenient than the former one with respect to the homogenous crystallization mechanism, and enable us to produce high performance nanocrystalline soft-magnetic alloys. This strategy is also suitable for improving the compositional adjustability, impurity tolerance, and enlarging the window of melt temperature,which is an important reference for the future development of composition and process. | Tao Liu Aina He Fengyu Kong Anding Wang Yaqiang Dong Hua Zhang Xinmin Wang Hongwei Ni Yong Yang | 2021 | Journal of Materials Science & Technology2021，，9： | 0 |
| 17 | Study on Cache Configuration of A Muitithreaded Approach显示文摘 | Lan Dong Xinmin Tang Zhenzhou Ji Mingzeng Hu Guangzuo Cui | 2006 | 通讯和计算机(中英文版)2006，3，7： | 0 |
| 18 | The concordance between the evolutionary trend and the clinical manifestation of the two SARS-CoV-2 variants显示文摘Coronavirus disease 2019(COVID-19),the disease caused by infection with severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),has developed into a global pandemic that continues to pose an enormous threat to public health and the global economy.Since the first SARS-CoV-2 genome was released[1],thousands of genetic variants have been identified in SARS-CoV-2 strains isolated from worldwide patients. | Ben Hu Ran Liu Xiaolu Tang Yuchen Pan Ming Wang Yongqing Tong Guangming Ye Gaigai Shen Ruochen Ying Aisi Fu Di Li Wanxu Zhao Jing Peng Jie Guo Dong Men Xinmin Yao Yirong Wang Hong Zhang Zhihui Feng Junping Yu Liangjun Chen Zixin Deng Xuemei Lu Ya-Ping Zhang Yirong Li Bende Liu Lilei Yu Yan Li Jian Lu Tiangang Liu | 2021 | National Science Review2021，8，8： | 0 |
| 19 | An Approach of Branch Multithreading Switch Mechanism显示文摘 | Lan Dong Zhenzhou Ji Mingzeng Hu Xinmin Tang | 2006 | 通讯和计算机(中英文版)2006，3，5： | 0 |
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