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| 1 | Adaptive neural control based on HGO for hypersonic flight vehicles显示文摘This paper describes the design of adaptive neural controller for the longitudinal dynamics of a generic hypersonic flight vehicle (HFV) which are decomposed into two functional systems, namely the altitude subsystem and the velocity subsystem. For each subsystem, one adaptive neural controller is investigated based on the normal output-feedback formulation. For the altitude subsystem, the high gain observer (HGO) is taken to estimate the unknown newly defined states. Only one neural network (NN) is employed to approximate the lumped uncertain system nonlinearity during the controller design which is considerably simpler than the ones based on back-stepping scheme with the strict-feedback form. The Lyapunov stability of the NN weights and filtered tracking error are guaranteed in the semiglobal sense. Numerical simulation study of step response demonstrates the effectiveness of the proposed strategy in spite of system uncertainty. | XU Bin GAO DaoXiang WANG ShiXing | 2011 | Science China(Information Sciences)2011，54，3： | 36 |
| 2 | Fuzzy tracking control design for hypersonic vehicles via T-S model显示文摘The main focus of this paper is on designing a T-S fuzzy controller for the hypersonic vehicle. The longitudinal dynamics of the vehicle are studied using time-scale decomposition to reduce the complexity of T-S modeling. The dynamic inversion with PI control technique is applied for the slow dynamics to derive the flight path angle command and throttle setting by taking the pilot altitude and velocity command as its inputs. The T-S fuzzy controller is designed for the fast dynamics to derive the elevator deflection to track the flight path angle command. The discrepancy between the T-S model and real vehicle model is considered by using sliding mode control for the system stability. Simulation results are included to show the effectiveness of the controller. | GAO DaoXiang SUN ZengQi | 2011 | Science China(Information Sciences)2011，54，3： | 19 |
| 3 | Existence of Positive Periodic Solutions of Competitor-Competitor-Mutualist Lotka-Volterra Systems with Infinite Delays显示文摘In this paper,the authors primarily explore a delayed competitor-competitor-mutualist Lotka-Volterra model,which is a system of differential equation with infinite integral.The authors first study the existence of positive periodic solutions of the model by using the Krasnoselskii's fixed point theorem,and then present an example to illustrate the main results. | ZHANG Daoxiang DING Weiwei ZHU Min | 2015 | Journal of Systems Science & Complexity2015，28，2： | 8 |
| 4 | Extended Nonlinear Chirp Scaling Algorithm for High-Resolution Highly Squint SAR Data Focusing 显示文摘 | AN Daoxiang HUANG Xiaotao JIN Tian | 2012 | IEEE Trans on Geoscience and Remote Sens- ing2012，50，9： | 1 |
| 5 | miR-181a mediates metabolic shift in colon cancer cells via the PTEN/AKT pathway显示文摘 | Zhonghua Wei Long Cui Zubing Mei Min Liu Daoxiang Zhang | 2014 | FEBS Letters2014，，9： | 1 |
| 6 | Extended Nonlinear Chirp Scaling Algorithm for High-Resolution Highly Squint SAR Data Focusing显示文摘 | Daoxiang A | 2012 | Geoscience and Remote Sensing IEEE Transactions on2012，50，9： | 1 |
| 7 | A multiresolution curvilinear rao-wilton-glisson basis function for fast analysis of electromagnetic scattering显示文摘 | Chen Rushan Ding Jianjun Ding D Z Fan Z H Wang Daoxiang | | 0，，10： | 1 |
| 8 | Extended nonlinear chirp scaling algorithm for high-resolution highly squint SAR data focusing 显示文摘 | An Daoxiang Huang Xiaotao Jin Tian | 2012 | Geoscience and Remote Sensing IEEE Transactions on2012，50，9： | 1 |
| 9 | ANALYSIS AND PREDICTION OF INTERFERENCE IN ASSEMBLING CURVED BEVEL GEARS显示文摘ANALYSISANDPREDICTIONOFINTERFERENCEINASSEMBLINGCURVEDBEVELGEARSANALYSISANDPREDICTIONOFINTERFERENCEINASSEMBLINGCURVEDBEVELGEAR... | Gong Daoxiang (Chongqing University) Shigeyuki Shimachi(Iwate University, 020,Japan)Masana Kato( Tohoku University,980,Japan) | 1996 | Chinese Journal of Mechanical Engineering1996，9，1： | 1 |
| 10 | Improved multilevel physical optics algorithm for fast computation of monostatic radar cross section 显示文摘 | Yuyuan An Daoxiang Wang Rushan Chen | 2014 | IET Microwaves Antennas & Propagation2014，8，2： | 1 |
| 11 | Extended Two-step Focusing Approach for Squinted Spotlight SAR Imaging 显示文摘 | An Daoxiang Huang Xiaotao Jin Tian | 2012 | IEEE Transactions on Geoscience and Remote Sensing2012，50，7： | 1 |
| 12 | Extended nonlinear chirp scaling algorithm for high-Resolution highly squint SAR data focusing显示文摘 | AN Daoxiang HUANG Xiaotao JIN Tian | 2012 | IEEE Transactions on Geoscience and Remote Sensing2012，50，9： | 1 |
| 13 | Genesis,Distribution and Engineering Characteristics of Recently Deposited Silts in Huaibei Plain,Anhui Province显示文摘There are two different genetic types of recently deposited silts widely distributing in Huaibei Plain of Anhui Province:flooding deposited silt of Yellow River and Huaihe River.These recently deposited silts have the following unique characteristics:new formation age,feeble consolidation degree。 | Daoxiang Wu,Zhihai Wu,Guojun Shi,Guoqiang Wang 1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China. 2.School of Resources & Environmental Engineering,Hefei University of Technology,Hefei 230009,China | 2009 | 地学前缘2009，16，S1： | 0 |
| 14 | Estimation of wall parameters based on range profiles显示文摘Compensation of wall effects is of main concern in SAR through-wall sensing.Wall parameters are essential for the compensation,which are normally not known a priori.A model of SAR working in sidelooking strip mode for through-wall imaging is established,with the path of signal due to refraction taken into consideration.Through analyzing the echo configuration in time domain,a new procedure for estimating wall parameters using high range resolution profiles is provided.By extracting time delay of target counterpart,the thickness and permittivity of wall are figured out exactly by employing numerical equation method and intersecting of searching curves.With the estimated parameters,focused image of targets in a room is acquired after wall effects are compensated in imaging processing with back projection algorithm.Simulation results verify the validity of the theoretical analysis and imaging algorithm. | LI Xin AN DaoXiang HUANG XiaoTao PENG ShiRui | 2011 | Science China(Information Sciences)2011，54，10： | 0 |
| 15 | Cultural Soft Power and China's Improvement显示文摘'Soft power'has become a buzz word in the field of international relations in recent years,and cultural soft power,as the core element of soft power,attracted the attention of people in particular.The comprehensive national strength of China has been rising,while the improvement of corresponding soft power lagged behind the rise of hard power.For the consideration of their interest, | Li Daoxiang Ma Jiatai | 2015 | International Understanding2015，，3： | 0 |
| 16 | An ANN-Based Short-Term Temperature Forecast Model for Mass Concrete Cooling Control显示文摘Concrete temperature control during dam construction(e.g.,concrete placement and curing)is important for cracking prevention.In this study,a short-term temperature forecast model for mass concrete cooling control is developed using artificial neural networks(ANN).The development workflow for the forecast model consists of data integration,data preprocessing,model construction,and model application.More than 80000 monitoring samples are collected by the developed intelligent cooling control system in the Baihetan Arch Dam,which is the largest hydropower project in the world under construction.Machine learning algorithms,including ANN,support vector machines,long short-term memory networks,and decision tree structures,are compared in temperature prediction,and the ANN is determined to be the best for the forecast model.Furthermore,an ANN framework with two hidden layers is determined to forecast concrete temperature at intervals of one day.The root mean square error of the forecast precision is 0.15∘C on average.The application on concrete blocks verifies that the developed ANN-based forecast model can be used for intelligent cooling control during mass concrete construction. | Hide Author's Information Ming Li Peng Lin Daoxiang Chen Zichang Li Ke Liu Yaosheng Tan | 2023 | Tsinghua Science and Technology2023，28，3： | 0 |
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