摘要：为一般不明确的非线性的时间延期系统的柔韧的稳定控制器的系统的递归的设计方法在这份报纸被调查。一条延期无关的州的反馈控制法律能被递归地构造 Lyapunov-Razumikhin 功能获得。以便柔韧的稳定控制法律的设计没有为系统的任何限制，由一些设计技术，对 Razumikhin 条件的应用程序内在的障碍才能被移开。

摘要：In this paper, a novel photonic crystal fiber （PCF） with high birefringence and nonlinearity is designed. The charac- teristics of birefringence, dispersion and nonlinearity are studied by using the full-vector finite element method （FVFEM）. The numerical results show that the phase birefringence and nonlinear coefficient of PCF can be up to 4.51× 10-3 and 32.8972 ***-1 at 1.55 μm, respectively. The proposed PCF could be found to have important applications in the polarization-dependent nonlinear optics such as the pulse compress and reshaping in the C waveband.

摘要：This paper presents a novel method for the description of kinematic chains, namely the canonical description of kinematic chains including the synthetic degree-sequences and the canonical adjacency matrices sets of kinematic chains. The most important characteristic of this new description method is its uniqueness. Based on the new principle the isomorphism identification becomes easy and the structures of all kinds of kinematic chains can be stored in computer for the benefits of the realization of automation and intelligence of machine design.

摘要：理论上,与传统准零刚度隔振器(QZS)相比,含限位结构的准零刚度隔振器具有更低的位移传递率峰值和更宽的隔振频率范围.但是,目前还没有相关的实验研究证明这一理论结果的正确性.因此,为了研究含限位准零刚度隔振器在实际应用过程中的隔振特性,本文设计制作了相应的结构,并进行了动力学实验.首先,根据赫兹接触理论,建立了含限位结构的准零刚度隔振器(QZS-HCM)动力学模型.然后,对隔振器的结构进行设计和加工,制作了QZS-HCM系统,并对系统进行静力学实验来验证理论结果的正确性.接着,在简谐位移激励下,对QZS-HCM系统进行动力学测试,通过分析系统的位移传递率和时间历程来评价系统的隔振性能.同时,将QZS-HCM系统与传统QZS系统的动力学测试结果进行对比,表明QZS-HCM隔振器在大幅值位移激励下具有更低的位移响应峰值和更宽的隔振频带.

摘要：Neural mass models can simulate the generation of electroencephalography（EEG） signals with different rhythms,and therefore the observation of the states of these models plays a significant role in brain research. The structure of neural mass models is special in that they can be expressed as Lurie systems. The developed techniques in Lurie system theory are applicable to these models. We here provide a new observer design method for neural mass models by transforming these models and the corresponding error systems into nonlinear systems with Lurie form. The purpose is to establish appropriate conditions which ensure the convergence of the estimation error. The effectiveness of the proposed method is illustrated by numerical simulations.

摘要：The martensitic transformation,mechanical,and magnetic properties of the Ni_(2)Mn_(1.5-x)Cu_(x)Ti_(0.5) (x=0.125,0.25,0.375,0.5) and Ni_(2-y)Co_(y)Mn_(1.5-x)Cu_(x)Ti_(0.5)[(x=0.125,y=0.125,0.25,0.375,0.5) and (x=0.125,0.25,0.375,y=0.625)]alloys were systematically studied by the first-principles *** the formation energy,the martensite is smaller than the austenite,the Ni–(Co)–Mn–Cu–Ti alloys studied in this work can undergo martensitic *** austenite and non-modulated (NM) martensite always present antiferromagnetic state in the Ni_(2)Mn_(1.5-x)Cu_(x)Ti_(0.5) and Ni_(2-y)Co_(y)Mn_(1.5-x)Cu_(x)Ti_(0.5) (y<0.625) *** y=0.625 in the Ni_(2-y)Co_(y)Mn_(1.5-x)Cu_(x)Ti_(0.5) series,the austenite presents ferromagnetic state while the NM martensite shows antiferromagnetic *** doping can decrease the thermal hysteresis and anisotropy of the Ni–(Co)–Mn–Ti *** Mn and decreasing Ti content can improve the shear resistance and normal stress resistance,but reduce the toughness in the Ni–Mn–Cu–Ti *** the ductility of the Co–Cu co-doping alloy is inferior to that of the Ni–Mn–Cu–Ti and Ni–Co–Mn–Ti *** electronic density of states was studied to reveal the essence of the mechanical and magnetic properties.

摘要：This paper addressed the problem of identifying the property of the singularity loci of the 6/6-Stewart manipulators. The singularity locus equation of the manipulator can be obtained by setting the determinant of the Jacobian matrix be zero. The singularity loci for different orientations are illustrated with examples. The singularity locus equation of the manipulator with respect to the oblique plane is derived either which is a polynomial expression of two degree. It shows that the singularity loci of the manipulator in the parallel oblique planes are hyperbolas accompanied with four pairs of intersecting straight lines and a parabola. Their geometric interpretations and the properties of the singularity loci are further analyzed.

摘要：We propose a novel optical polarizer based on an asymmetric dual-core photonic crystal fiber(PCF) with triangular lattice *** fiber is designed as that the effective indices of modes in the two cores are matched at one polarized state but mismatched at another polarized *** a result,one of the polarization states is coupled to the other core and transferred into a high-order *** transmission properties of the polarizer are investigated by the semi-vectorial beam propagation method(SV-BPM).Numerical results demonstrate that a device length of 11.3 mm shows extinction ratio as low as-20 dB with bandwidth as great as 80 nm ranging from 1.51 mm to 1.59 mm.

摘要：在地面上的一个严肃环境，自从人首先由飞目标探索了空间，在空间的零严肃的环境的二个飞的目标的接触过程的模拟是一个挑战性的问题。Hardware-in-the-loop (HIL ) 模拟是一个重要、有效的方法在空间测试真实停靠机制的可用性，可靠性，和安全。为 HIL 模拟系统有四个主要问题：能够高频率反应，高运动精确，高速度，和快速的加速的模拟器的设计；为模拟失真的赔偿；为 HIL 模拟进程的一个控制模型的设计；并且试验性的确认。这里，我们与 6-DOF 3-3 建议一个新奇 HIL 模拟器系统垂直平行机制和 3-DOF 3-PRS 平行机制；发现模拟失真的原则；为模拟器的力量测量系统，动态反应，和结构的动力学介绍失真赔偿模型；并且为 HIL 模拟过程提供一个控制模型。二种实验在被动未受潮的有弹性的杆和停靠机制上被执行测试他们的表演并且验证 HIL 模拟器的有效性和可用性。在这份报纸建议的 HIL 模拟系统为开发停靠的空格是有用的， berthing， refueling，修理，升级，搬运，并且 rescuing 技术。

摘要：Fractional order proportional-integral-derivative(FOPID) controller generalizes the standard PID controller. Compared to PID controller, FOPID controller has more parameters and the tuning of parameters is more complex. In this paper, an improved artificial bee colony algorithm, which combines cyclic exchange neighborhood with chaos(CNC-ABC), is proposed for the sake of tuning the parameters of FOPID controller. The characteristic of the proposed CNC-ABC exists in two folds: one is that it enlarges the search scope of the solution by utilizing cyclic exchange neighborhood techniques, speeds up the convergence of artificial bee colony algorithm(ABC). The other is that it has potential to get out of local optima by exploiting the ergodicity of chaos. The proposed CNC-ABC algorithm is used to optimize the parameters of the FOPID controller for an automatic voltage regulator(AVR) system. Numerical simulations show that the CNC-ABC FOPID controller has better performance than other FOPID and PID controllers.