摘要：The IMC(Internal Model Control) controller based on robust tuning can improve the robustness and dynamic performance of the *** this paper,the robustness degree of the control system is investigated based on Maximum Sensitivity(Ms) in *** the analytical relationship is obtained between the robustness specification and controller parameters,which gives a clear design criterion to robust IMC ***,a novel and simple IMC-PID(Proportional-Integral-Derivative) tuning method is proposed by converting the IMC controller to PID form in terms of the time domain rather than the frequency domain adopted in some conventional IMC-based ***,the presented IMC-PID gives a good performance with a specific robustness *** new IMC-PID method is compared with other classical IMC-PID rules,showing the flexibility and feasibility for a wide range of plants.

摘要：This paper presents an efficient method for globally optimizing and automating component sizing for rotary traveling wave oscillator arrays. The lumped equivalent model of transmission lines loaded by inverter pairs is evaluated and posynomial functions for oscillation frequency, power dissipation, phase noise, etc. are formulated using transmission line theory. The resulting design problem can be posed as a geometric programming problem, which can be efficiently solved with a convex optimization solver. The proposed method can compute the global optima more efficiently than the traditional iterative scheme and various design problems can be solved with the same circuit model. The globally optimal trade-off curves between competing objectives are also computed to carry out robust designs and quickly explore the design space.

摘要：这份报纸为完成时间最佳的轨道的足够的家庭在基于几何最佳的控制理论歧管的 3-dimensional 连接机器人的任何二种配置提供一个新几何方法。我们为分析非线性的问题的这种特殊类型提供一个新观点。从 Pontryagin 的最小的原则(PMP ) 和谎言代数学基于切换的功能和他们的衍生物的结构的特征，我们造一个特殊坐标系统并且介绍新向量。我们发现在这新向量的旋转轨道和最佳的控制轨道之间的一对一的印射。而且，我们定义表示位置和这向量的旋转方向的切换的向量，并且得出一个结论规定起始、最后的切换的向量能特别地决定一条最佳的轨道。另外，它是能直接被使用选择一条时间最佳的轨道的一个条件被提供的第一次。

摘要：Three novel benzocrown ether derivatives have been synthesized and their cation binding behavior with uni- and bi-valent metal ions was evaluated by the solvent extraction of aqueous metal picrates. The obtained results indicate that the size-fit of crown ether and metal cation, and electron effect of the side arm attached to benzocrown ethers affect their cation binding ability and selectivity.

摘要：For quantum state trajectory tracking of density matrix in Liouville equation of quantum systems,with the help of concept in quantum system control,one can apply unitary transformation both to controlled system and free-evolutionary target system such as to change the time-variant and non-stationary target system into a stationary ***,the quantum state trajectory tracking problem becomes a steering *** steering control law of the system transformed is designed by means of the Lyapunov stability ***,numerical simulation experiments are given for a five-level energy quantum *** comparison analysis of original system's trajectory tracking with other method illustrates the advantage in control time of the method proposed.

摘要：细胞的神经 / 非线性的网络(CNN ) 是为图象和录像信号处理的一个强大的工具，机器、生物的视觉。这篇论文与在二进制图象提取关上的域的性能介绍一种 CNN，并且为设计如此的一种 CNN 的模板给一个一般方法。一条定理为决定为实现的参数间隔规定了分别地处理功能的图象提供参数不平等。在二进制规模图象提取关上的域的 Examplesfor 被给。

摘要：Accurate description of the elastic deformation of the flexsphne is the foundation for optimization design of the structure and conjugate profiles of the harmonic drive *** paper proposed an experimental method to investigate the effect of the driving speed on the deformation characteristics of the ***,an experimental apparatus that integrates a special-fabricated micro-displacement platform and a pair of laser displacement sensors is developed,and the radial displacement of the flexsphne is measured in vertical and horizontal ***,the deformation analyses of the flexsphne at different driving speeds are performed with our method and the conventional method,and the comparison results reveal that the radial displacement of the flexsphne is actually composed of both harmonic and random components,and the amplitude decreases and tends to zero with the increase of the driving speed,especially near the closed end of the ***,the mechanisms of the inherent multi-frequency and amplitude attenuation characteristics of the radial displacement of the flexsphne are *** is indicated that the impact and friction existing in the flexible bearing of the wave generator is likely responsible for the existence of the random component,and the assumption of linear distribution of the flexsphne deformation along the rotating axis is invalid under high speed *** research promotes the further study on the contact-impact problem of the flexible bearing of the wave generator and the transfer characteristic of the elastic deformation of the flexsphne.

摘要：In the context of a room-and-pillar mining gob in Shanxi province in china,this paper numerically investigates the stress distribution and deformation rules of roadway surrounding rocks at various locations of residual coal pillars in room-and-pillar mining gobs using software FLAC3 *** is found that the concentrated stress beneath coal pillars distributes in a shape of ellipse.A reasonable roadway layout is then *** this design,it is indicated that roadways should be designed to avoid the supporting zones of pillars with increasing compression and take into account the roof falling and crushing in the upper *** to the surrounding rock deformation characteristics and mining roadway locations as well as the supporting principles of timely support,rock reinforcing,piecewise management and suiting local conditions,a new asymmetric shield supporting plan is *** field surveying results show that this supporting plan can effectively control the roadway rock deformation,thus guarantee the safe and smooth construction of roadways.

摘要：In this paper, form vulnerability theory was applied to the analysis of the failure mechanisms of single-layer latticed spherical shells subjected to seismic excitations. Three 1/10 scale testing models were designed with characteristics as follows: Model 1 possesses overall uniform stiffness and is expected to collapse in the strength failure mode as some members become plastic; Model 2 possesses six man-made weak parts located on six radial main rib zones and is expected to collapse in the dynamic instability mode with all members still in the elastic stage; Model 3 strengthens the six weak zones of Model 2, and therefore, its stiffness is uniform. Model 3 is proposed to collapse in the strength failure mode when the members are still in the elastic stage. By increasing the peak ground accelerations of seismic waves gradually, the shaking table tests were carried out until all three models collapsed (or locally collapsed). On the basis of form vulnerability theory, topological hierarchy models of the test models were established through a clustering process, and various failure scenarios, including overall collapse scenarios and partial collapse scenarios, were identified by unzipping corresponding hierarchical models. By comparison of the failure scenarios based on theoretical analysis and experiments, it was found that vulnerability theory could effectively reflect the weakness zones in topological relations of the structures from the perspective of internal causes. The internal mechanisms of the distinct failure characteristics of reticulated shells subjected to seismic excitations were also revealed in this process. The well-formedness of structural clusters, Q, is closely related to the collapse modes, i.e., uniform changes of Q indicate a uniform distribution of overall structural stiffness, which indicates that strength failure is likely to happen; conversely, non-uniform changes of Q indicate that weak zones exist in the structure, and dynamic instability

摘要：Timing and carrier frequency offset estimation are critical issue for OFDM cooperative communications. In view of the complexity and high accuracy requirement, 1/2 and 1/4 pilot symbol cycle CAZAC sequence structures are defined as the pilot frequency sequence. Estimation within one symbol cycle is carried out through averaging samples of two neighboring symbol cycles, after which the operation is expanded to all the symbol cycles in one band group. Taking multipath effect into account, the concept of phase rotation is proposed for a further step. Adjust the phase difference of estimated symbols by phase rotation, and cross estimation could be done. Meanwhile, timing scheme works within one cycle training sequence. Theoretical and simulation analysis indicate that CRLB does not only relate to estimation symbol length, but also be influenced by phase difference of estimation symbols seriously. In the condition that the length of estimation is fixed, the bigger the phase rotation angle is, the smaller the CRLB is. The complexity of proposed algorithm is less than full cycle average estimation method for almost 50%. Meanwhile, the estimation accuracy is approximate with the full cycle average estimation method as well. Timing scheme with the defined preamble structure is also proposed. Simulation proves its efficiency.