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| 1 | Three-dimensional guidance law based on adaptive integral sliding mode control显示文摘For the terminal guidance problem of missiles intercepting maneuvering targets in the three-dimensional space, the design of guidance laws for non-decoupling three-dimensional engagement geometry is studied. Firstly, by introducing a finite time integral sliding mode manifold, a novel guidance law based on the integral sliding mode control is presented with the target acceleration as a known bounded external disturbance. Then, an improved adaptive guidance law based on the integral sliding mode control without the information of the upper bound on the target acceleration is developed, where the upper bound of the target acceleration is estimated online by a designed adaptive law. The both presented guidance laws can make sure that the elevation angular rate of the line-of-sight and the azimuth angular rate of the line-of-sight converge to zero in finite time. In the end, the results of the guidance performance for the proposed guidance laws are presented by numerical simulations. Although the designed guidance laws are developed for the constant speed missiles, the simulation results for the time-varying speed missiles are also shown to further confirm the designed guidance laws. | Song Junhong Song Shenmin | 2016 | Chinese Journal of Aeronautics2016，29，1： | 23 |
| 2 | Adaptive finite-time backstepping control for attitude tracking of spacecraft based on rotation matrix显示文摘This paper investigates two finite-time controllers for attitude control of spacecraft based on rotation matrix by an adaptive backstepping method. Rotation matrix can overcome the drawbacks of unwinding which makes a spacecraft perform a large-angle maneuver when a small-angle maneuver in the opposite rotational direction is sufficient to achieve the objective. With the use of adaptive control, the first robust finite-time controller is continuous without a chattering phenomenon. The second robust finite-time controller can compensate external disturbances with unknown bounds. Theoretical analysis shows that both controllers can make a spacecraft following a time-varying reference attitude signal in finite time and guarantee the stability of the overall closed-loop system. Numerical simulations are presented to demonstrate the effectiveness of the proposed control schemes. | Guo Yong Song Shenmin | 2014 | Chinese Journal of Aeronautics2014，27，2： | 16 |
| 3 | Autonomous attitude coordinated control for spacecraft formation with input constraint,model uncertainties, and external disturbances显示文摘To synchronize the attitude of a spacecraft formation flying system, three novel autonomous control schemes are proposed to deal with the issue in this paper. The first one is an ideal autonomous attitude coordinated controller, which is applied to address the case with certain models and no disturbance. The second one is a robust adaptive attitude coordinated controller, which aims to tackle the case with external disturbances and model uncertainties. The last one is a filtered robust adaptive attitude coordinated controller, which is used to overcome the case with input constraint, model uncertainties, and external disturbances. The above three controllers do not need any external tracking signal and only require angular velocity and relative orientation between a spacecraft and its neighbors. Besides, the relative information is represented in the body frame of each spacecraft. The controllers are proved to be able to result in asymptotical stability almost everywhere. Numerical simulation results show that the proposed three approaches are effective for attitude coordination in a spacecraft formation flying system. | Zheng Zhong Song Shenmin | 2014 | Chinese Journal of Aeronautics2014，27，3： | 13 |
| 4 | Three-dimensional adaptive finite-time guidance law for intercepting maneuvering targets显示文摘To intercept maneuvering targets at desired impact angles, a three-dimensional terminal guidance problem is investigated in this study. Because of a short terminal guidance time, a finitetime impact angle control guidance law is developed using the fast nonsingular terminal sliding mode control theory. However, the guidance law requires the upper bound of lumped uncertainty including target acceleration, which may not be accurately obtained. Therefore, by adopting a novel reaching law, an adaptive sliding mode guidance law is provided to release the drawback. At the same time, this method can accelerate the convergence rate and weaken the chattering phenomenon to a certain extent. In addition, another novel adaptive guidance law is also derived; this ensures systems asymptotic and finite-time stability without the knowledge of perturbations bounds.Numerical simulations have demonstrated that all the three guidance laws have effective performances and outperform the traditional terminal guidance laws. | Yujie SI Shenmin SONG | 2017 | Chinese Journal of Aeronautics2017，30，6： | 12 |
| 5 | Fractional order nonsingular terminal sliding mode control for flexible spacecraft attitude tracking显示文摘This paper investigates a fractional terminal sliding mode control for flexible spacecraft attitude tracking in the presence of inertia uncertainties and external disturbances. The controller is based on the fractional calculus and nonsingular terminal sliding mode control technique,and it guarantees the convergence of attitude tracking error in finite time rather than in the asymptotic sense. With respect to the controller,a fractional order sliding surface is given,the corresponding control scheme is proposed based on Lyapunov stability theory to guarantee the sliding condition,and the finite time stability of the whole close loop system is also proven. Finally,numerical simulations are presented to illustrate the performance of the proposed scheme. | GAO Junshan DENG Liwei SONG Shenmin | 2016 | Instrumentation2016，3，1： | 12 |
| 6 | Homozygous loss-of-function mutations in FSIP2 cause male infertility with asthenoteratospermia显示文摘Male infertility, as a major issue of human reproduction health, prevents successful natural conception. Asthenoteratospermia mainly presents one or multiple anomalies in head, neck and tail of spermatozoa, and impairs sperm function and motility (Coutton et al., 2015). Recurrent abnormalities of the fibrous sheath lead to multiple morphological abnormaliries of the sperm flagella (MMAF), which is a quite frequent type of asthenoteratospermia in male infertility (Chemes et al., 1987;Ben Khelifa et al, 2014). | Wangjie Liu Huan Wu Li Wang Xiaoyu Yang Chunyu Liu Xiaojin He Weiyu Li Jiajia Wang Yujie Chen Hongyan Wang Yang Gao Shuyan Tang Shenmin Yang Li Jin Feng Zhang Yunxi Cao | 2019 | Journal of Genetics and Genomics2019，46，1： | 7 |
| 7 | Decentralized attitude synchronization tracking control for multiple spacecraft under directed communication topology显示文摘This paper studies the attitude synchronization tracking control of spacecraft formation flying with a directed communication topology and presents three different controllers. By introducing a novel error variable associated with rotation matrix, a decentralized attitude synchronization controller, which could obtain almost global asymptotical stability of the closed-loop system, is developed. Then, considering model uncertainties and unknown external disturbances, we propose a robust adaptive attitude synchronization controller by designing adaptive laws to estimate the unknown parameters. After that, the third controller is proposed by extending this method to the case of time-varying communication delays via Lyapunov–Krasovskii analysis. The distinctive feature of this work is to address attitude coordinated control with model uncertainties, unknown disturbances and time-varying delays in a decentralized framework, with a strongly connected directed information flow. It is shown that tracking and synchronization of an arbitrary desired attitude can be achieved when the stability condition is satisfied. Simulation results are provided to demonstrate the effectiveness of the proposed control schemes. | Zheng Zhong Xu Ying Zhang Lisong Song Shenmin | 2016 | Chinese Journal of Aeronautics2016，29，4： | 5 |
| 8 | Relative dynamics estimation of non-cooperative spacecraft with unknown orbit elements and inertial tensor显示文摘The state estimation for relative motion with respect to non-cooperative spacecraft in rendezvous and docking(RVD) is a challenging problem. In this paper, a completely non-cooperative case is considered, which means that both orbit elements and inertial tensor of target spacecraft are unknown. By formulating the equations of relative translational dynamics in the orbital plane of chaser spacecraft, the issue of unknown orbit elements is solved. And for the problem for unknown inertial tensor, we propose a novel robust estimator named interaction cubature Kalman filter(In CKF) to handle it. The novel filter consists of multiple concurrent CKFs interlacing with a maximum a posteriori(MAP) estimator. The initial estimations provided by the multiple CKFs are used in a Bayesian framework to form description of posteriori probability about inertial tensor and the MAP estimator is applied to giving the optimal estimation. By exploiting special property of spherical-radial(SR) rule, a novel method with respect to approximating the likelihood probability of inertial tensor is presented. In addition, the issue about vision sensor's location inconformity with center mass of chaser spacecraft is also considered. The performance of this filter is demonstrated by the estimation problem of RVD at the final phase. And the simulation results show that the performance of In CKF is better than that of extended Kalman filter(EKF) and the estimation accuracy of pose and attitude is relatively high even in the completely non-cooperative case. | Yu Han Zhang Xiujie Liu Lingyu Wang Shuo Song Shenmin | 2016 | Chinese Journal of Aeronautics2016，29，2： | 4 |
| 9 | Reverse atom transfer radical polymerization of methyl methacrylate initiated by AIBN/FeCl_3/isophthalic acid system显示文摘The reverse ATRP of MMA using AIBN/FeCl3/ isophthalic acid as the initiating system was successfully performed. The new initiating system can be used to synthesize PMMA with high molecular weight and narrow polydis-persity index. The polymerization shows ’living’/controlled characteristics. Compared with other initiating system used in reverse ATRP, the easy availability and non-toxicity of isophthalic acid make it very attractive. | ZHANG Guosheng, ZHU Shenmin & YAN DeyueSchool of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, China | 2001 | Chinese Science Bulletin2001，46，13： | 3 |
| 10 | Assembly of carbon nanodots in graphene-based composite for flexible electro-thermal heater with ultrahigh efficiency显示文摘A high-efficiency electro-thermal heater requires simultaneously high electrical and thermal conductivities to generate and dissipate Joule heat efficiently.A low in put voltage is essential to en sure the heaters safe applications.However,the low voltage gen erally leads to low saturated temperature and heati ng rate and hence a low thermal efficie ncy.How to reduce the in put voltage while maintai ning a high electro-thermal efficiency is still a challenge.Herein,a highly electrical and thermal conductive film was 8nstructed using a graphene-based composite which has an internal three-dimensional(3D)conductive network.In the 3D framework,cellulose nanocrystalline(CNC)phase with chiral liquid crystal manner presents in the form of alig ned helix betwee n the graphe ne oxide(GO)layers.Carbon nano dots(CDs)are assembled泊side the composite as con ductive nano fillers.Subseque nt an neali ng and compressi on results in the formati on of the assembled GO-CNC-CDs film.The carb on ized CNC nano rods(CNR)with the helical alignment act as irrplane and through-pla ne conn ecti ons of n eighbori ng reduced GO(rGO)nano sheets,forming a con ductive network in the composite film.The CDs with ultrafast electr ons tran sfer rates provide additi onal electro ns and phonons tran sport paths for the composite.As a result,the obtai ned graphe ne?based composite film(rGO-CNR-CDs)exhibited a high thermal conductivity of 1,978.6 W m^-1·K^-1 and electrical conductivity of 2,053.4 S·cm^-1,respectively.The composite film showed an outstanding electro-thermal heating efficiency with the saturated temperature of 315℃and maximum heating rate of 44.9℃·s^-1 at a very low in put voltage of 10 V.The freestandi ng graphe ne composite film with the delicate nano structure desig n has a great pote ntial to be integrated into electro-thermal devices. | Xin Meng Tianxing Chen Yao Li Siyuan Liu Hui Pan Yuning Ma Zhixin Chen Yanping Zhang Shenmin Zhu | 2019 | Nano Research2019，12，10： | 3 |
| 11 | Finite-time coordination control for formation flying spacecraft显示文摘This paper investigates a distributed coordination control scheme using an adaptive terminal sliding mode for formation flying spacecraft with coupled attitude and translational dynamics. In order to overcome the singularity of the traditional fast terminal sliding manifold, a novel fast terminal sliding manifold is given. And then, based on the adaptive control method, a continuous robust coordinated controller is designed to compensate external disturbances and to alleviate the chattering phenomenon. The theoretical analysis shows that the coordinated controller can guarantee the finite-time stability of the overall closed-loop system through local information exchange, and numerical simulations also demonstrate its effectiveness. | Yong Guo Shenmin Song Liwei Deng | 2014 | Journal of Systems Engineering and Electronics2014，25，5： | 2 |
| 12 | One-step nanoarchitectonics of a multiple functional hydrogel based on cellulose nanocrystals for effective tumor therapy显示文摘Hypoxia is a huge barrier for the development of photodynamic therapy(PDT).Chemodynamic therapy(CDT)could provide a possible solution to this dilemma.In this work,a controlled Schiff-base reaction was conducted between amido groups on the surface of carbon dots(CDs)and aldehyde groups on aldehyde-modified cellulose nanocrystals(mCNCs)as well as aldehydemCNCs decorated with Fe_(3)O_(4)nanoparticles.In this process,the mCNCs not only prevent the agglomeration of Fe_(3)O_(4)but also form hydrogels with CDs.The CDs act as both photothermal agent and photosensitizer.The hypoxia could be effectively relieved through the Fenton reaction due to the addition of Fe_(3)O_(4),and the·OH produced in the reaction further induces CDT and enhances tumor therapy efficiency.The therapy performance was further verified through in vitro cell experiments and in vivo animal experiments.This convenient method provides inspirations for the design and preparation of advanced biomaterials with multiple functions for cancer therapy. | Tianxing Chen Tengteng Yao Hui Pan Hui Peng AndrewKWhittaker Yao Li Shenmin Zhu Zhaoyang Wang | 2022 | Nano Research2022，15，9： | 2 |
| 13 | Fixed-time position coordinated tracking control for spacecraft formation flying with collision avoidance显示文摘In this paper,the fixed-time stability of spacecraft formation reconfiguration(position tracking)is studied.Firstly,a novel nonsingular terminal sliding mode surface is designed and based on which a fixed-time coordinated controller is designed to keep the closed-loop system states have a finite settling time bounded by some predefined constants.Secondly,another nonsingular terminal sliding mode surface is designed by combining the artificial potential function and the aforementioned sliding surface,which meets the mutual distance constraint during transition process among spacecraft when it is bounded.Then another coordinated controller with fixed-time observer considering mutual distance constraint is presented,which guarantees the closed-loop system states stable also in bounded settling time.Finally,simulation results are shown to validate the correctness of the proposed theorems.It is worth mentioning that the control schemes also work even though there is a properly limit on the control input. | Minglei ZHUANG Liguo TAN Kehang LI Shenmin SONG | 2021 | Chinese Journal of Aeronautics2021，34，11： | 2 |
| 14 | Research of University Educational Administration System Bottlenecks and Overall Optimization Scheme显示文摘 | Lv Shenmin | 2014 | International Journal of Technology Management2014，，5： | 1 |
| 15 | A facile method for fabricating TiO2 @mesoporous carbon and three-layered nanocomposites 显示文摘 | Liu Yong Jin Haibao Zhu Shenmin | 2012 | Nanotechnology2012，23，32： | 1 |
| 16 | Dynamics of soilorganic carbon and its fractions after abandonment of cultivatedwetlands in northeast China显示文摘 | Zhang Jinbo Song Changchun Wang Shenmin | 2007 | Soil and Tillage Research2007，96，12： | 1 |
| 17 | Design and synehesis of delivery system based on SBA-15 eith magnetic particles forms in situ and thermo-sensitive PNIPA as con trolled switch 显示文摘 | Zhu Shenmin Zhou Zhengyang Zhang Di | 2007 | Microporous and Mesoporous Materials2007，106，13： | 1 |
| 18 | The research of learning algorithm for adaptive neural network 显示文摘 | Yin shenmin Lu Jiandong and Lei Ming | 1994 | Research and Development of Computer1994，31，6： | 1 |
| 19 | Design and synthesis of delivery system based on SBA-15 with magnetic particles formed in situ and thermo-sensitive PNIPA as controlled switch 显示文摘 | ZHU Shenmin ZHOU Zhengyang ZHANG Di | 2007 | Microporous Mesoporous Mater2007，106，1： | 1 |
| 20 | Design and synthesis of delivery system based on SBA 15 with magnetic particles formed in situ and thermo- sensitive PNIPA as controlled switch显示文摘 | Zhu Shenmin Zhou Zhengyang Zhang Di Jin Chan Li Zhiqiang | 2007 | Microporous and Mesoporous Materials2007，106，123： | 1 |
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