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| 1 | Flight control for a flexible air-breathing hypersonic vehicle based on quasi-continuous high-order sliding mode显示文摘The focus of this paper is on control design and simulation for the longitudinal model of a flexible air-breathing hypersonic vehicle(FAHV).The model of interest includes flexibility effects and intricate couplings between the engine dynamics and flight dynamics.To overcome the analytical intractability of this model,a nominal control-oriented model is constructed for the purpose of feedback control design in the first place.Secondly,the multi-input multi-output(MIMO) quasi-continuous high-order sliding mode(HOSM) controller is proposed to track step changes in velocity and altitude,which is based on full state feedback.The simulation results are presented to verify the effectiveness of the proposed control strategy. | Jie Wang Qun Zong Bailing Tian Helong Liu | 2013 | Journal of Systems Engineering and Electronics2013，24，2： | 14 |
| 2 | Continuous Sliding Mode Controller with Disturbance Observer for Hypersonic Vehicles显示文摘In this paper, a continuous sliding mode controller with disturbance observer is proposed for the tracking control of hypersonic vehicles to suppress the chattering. The finite time disturbance observer is involved to make that the continuous sliding mode controller has the property of disturbance rejection.Due to continuous terms replacing the discontinuous term of traditional sliding mode control, switching modes of velocity and altitude firstly arrive at small regions with respect to disturbance observation errors. Switching modes keep zero and velocity and altitude asymptotically converge to their reference commands after disturbance observation errors disappear. Simulation results have proved the proposed method can guarantee the tracking of velocity and altitude with continuous sliding mode control laws,and also has the fast convergence rate and robustness. | Chaoxu Mu Qun Zong Bailing Tian Wei Xu | 2015 | IEEE/CAA Journal of Automatica Sinica2015，2，1： | 11 |
| 3 | Super twisting sliding mode control for a flexible air-breathing hypersonic vehicle based on disturbance observer显示文摘A robust finite time sliding mode control strategy is proposed in this paper for a flexible air-breathing hypersonic vehicle(FAHV) model with aerodynamic parameter uncertainty. The strong coupling among the aerodynamics, the propulsion system and the flexibility effects makes the problem more challenging. Firstly, to reduce the complexity of the controller design, the FAHV model is transformed into three subsystems(velocity subsystem, altitude and flight path angle subsystem, attack of angle and pitch rate subsystem). Secondly, based on super-twisting algorithm, a novel finite time disturbance observer and an improved sliding mode controller are designed to ensure the finite time stability of each subsystem. The proposed disturbance observer can estimate the uncertainty and the derivative of virtual control in finite time. Finally, simulation results are presented to show the precision and rapidness in tracking the reference trajectory and validate the effectiveness of the designed controller. | ZONG Qun DONG Qi WANG Fang TIAN BaiLing | 2015 | Science China(Information Sciences)2015，58，7： | 7 |
| 4 | A distributed approach for lidar-based relative state estimation of multi-UAV in GPS-denied environments显示文摘In this paper,we present a distributed framework for the lidar-based relative state estimator which achieves highly accurate,real-time trajectory estimation of multiple Unmanned Aerial Vehicles(UAVs)in GPS-denied environments.The system builds atop a factor graph,and only on-board sensors and computing power are utilized.Benefiting from the keyframe strategy,each UAV performs relative state estimation individually and broadcasts very partial information without exchanging raw data.The complete system runs in real-time and is evaluated with three experiments in different environments.Experimental results show that the proposed distributed approach offers comparable performance with a centralized method in terms of accuracy and real-time performance.The flight test demonstrates that the proposed relative state estimation framework is able to be used for aggressive flights over 5 m/s. | Hongming SHEN Qun ZONG Hanchen LU Xuewei ZHANG Bailing TIAN Lei HE | 2022 | Chinese Journal of Aeronautics2022，35，1： | 3 |
| 5 | Periodic event-triggered formation control for multi-UAV systems with collision avoidance显示文摘In this paper,periodic event-triggered formation control problems with collision avoidance are studied for leader–follower multiple Unmanned Aerial Vehicles(UAVs).Firstly,based on the Artificial Potential Field(APF)method,a novel sliding manifold is proposed for controller design,which can solve the problem of collision avoidance.Then,the event-triggered strategy is applied to the distributed formation control of multi-UAV systems,where the evaluation of the event condition is continuous.In addition,the exclusion of Zeno behavior can be guaranteed by the inter-event time between two successive trigger events have a positive lower bound.Next,a periodic event-triggered mechanism is developed for formation control based on the continuous eventtriggered mechanism.The periodic trigger mechanism does not need additional hardware circuits and sophisticated sensors,which can reduce the control cost.The stability of the control system is proved by the Lyapunov function method.Finally,some numerical simulations are presented to illustrate the effectiveness of the proposed control protocol. | Tong WU Jie WANG Bailing TIAN | 2022 | Chinese Journal of Aeronautics2022，35，8： | 2 |
| 6 | Optimal guidance for reentry vehicles based on indirect Legendre pseudospectral method显示文摘 | Bailing Tian Qun Zong | 2010 | Acta Astronautica2010，，7： | 1 |
| 7 | Quasi-continuous high-order sliding mode controller and observer design for flexible hypersonic vehicle显示文摘 | Qun Zong Jie Wang Bailing Tian Yang Tao | 2013 | Aerospace Science and Technology2013，27，： | 1 |
| 8 | Real - Time Trajectory and Attitude Coordina- tion Control for Reusable Launch Vehicle in Reentry Phase 显示文摘 | Bailing Tian | 2015 | IEEE Transactions On Industrial Electronics2015，62，3： | 1 |
| 9 | Age-dependent diarrhea induced by a rotaviral nonstructural glyeoprotein显示文摘 | BAIL J M TIAN P ZENG C Q | 1996 | Science1996，272，： | 1 |
| 10 | Quasi-continuous high-order sliding mode controller and observer design for flexible hypersonic vehicle显示文摘 | Zong Qun Wang Jie Tian Bailing | 2013 | Aerospace Science and Technology2013，，： | 1 |
| 11 | Spatial and time pat- terns extraction of eddy current pulsed tbermography using blind source separation 显示文摘 | BAIL B GAO B TIAN G Y | 2013 | IEEE Sensors Jour- nal2013，13，6： | 1 |
| 12 | The survey of information system security classified protection 显示文摘 | Tian Zhihong Wang Bailing Ye Zhiwei | 2011 | Lecture Notes in Electrical Engineering2011，98，： | 1 |
| 13 | Oncolytic adenoviruses expressing checkpoint inhibitors for cancer therapy显示文摘Despite the remarkable success of immune checkpoint inhibitors(ICIs),primary resistance to ICIs causes only subsets of patients to achieve durable responses due to the complex tumor microenvironment(TME).Oncolytic viruses(OVs)can overcome the immunosuppressive TME and promote systemic antitumor immunity in hosts.Engineered OVs armed with ICIs would likely have improved effectiveness as a cancer therapy.According to the diverse immune cell landscapes among different types of tumors,we rationally and precisely generated three recombinant oncolytic adenoviruses(OAds):OAd-SIRPα-Fc,OAd-Siglec10-Fc and OAd-TIGIT-Fc.These viruses were designed to locally deliver SIRPα-Fc,Siglec10-Fc or TIGIT-Fc fusion proteins recognizing CD47,CD24 or CD155,respectively,in the TME to achieve enhanced antitumor effects.Our results suggested that OAd-SIRPα-Fc and OAd-Siglec10-Fc both showed outstanding efficacy in tumor suppression of macrophage-dominated tumors,while OAd-TIGIT-Fc showed the best antitumor immunity in CD8+T-cell-dominated tumors.Importantly,the recombinant OAds activated an inflammatory immune response and generated long-term antitumor memory.In addition,the combination of OAd-Siglec10-Fc with anti-PD-1 significantly enhanced the antitumor effect in a 4T1 tumor model by remodeling the TME.In summary,rationally designed OAds expressing ICIs tailored to the immune cell landscape in the TME can precisely achieve tumor-specific immunotherapy of cancer. | Daoyuan Xie Yaomei Tian Die Hu Yuanda Wang Yuling Yang Bailing Zhou Rui Zhang Zhixiang Ren Mohan Liu Jie Xu Chunyan Dong Binyan Zhao Li Yang | 2023 | Signal Transduction and Targeted Therapy2023，8，12： | 0 |
| 14 | A Parallel Mapping and Planning Strategy for Micro Aerial Vehicle显示文摘Autonomous fight is a fundamental problem for various saplications of miaro aerial vehicles(MAVs).Thanks to the dewvelopment of Gudance.Navigation and Control(GNC)techndogle,the rsearch on this problem i abo becoming mature.However,safe fight in unknown,dut tered enviouments remains an open question,epeaially with real-time reguirement on onboard computer.This paper propoes a framnework including prlelly mapping and planning and implements it on Graphics Pmocessing Unit(GPU).First,a spherical coomlinate proijection is used in the ocupency grid map to avold menory cnflicts.After that,in the planning phase,a method baed on latice state space sampling is applied to obtain mutiple rajectorfe parlelly.Then,we design a series of aoft constraints to ensure that the MAV is in a safe known space with optimal dynamics.By solving the cost for each trajectory and comparison,the optimal trajectory can be generated.The efectivenes of the propeed strategy is demonstrated through simulation testa. | Zhuo Wang Qun Zong Hongming Shen Bailing Tian Hanchen Lu | 2022 | Guidance, Navigation and Control2022，2，2： | 0 |
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