Theoretical Stiffness Modeling and Application Research of a Novel Stacked Flexure Hinge by Yonghong Zhang, Chengmin Wang, Shuangquan Tang, You Jiang, Hong Chen, Wenjie Ge

“…This study investigates and designs a novel stacked hinge with low stiffness, large rotation angle, high strength, and length-adaptive functionality. Firstly, based on the large deformation theory of cantilever beams and relevant theories of leaf springs, a stiffness theoretical model for stacked flexure hinges is established. …”
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Cross-coupled control based on real-time Double Circle contour error estimation for biaxial motion system by Li Bo, Wang Taiyong, Wang Peng

“…In this paper, a Double Circle contour error estimation method is proposed. First, based on the kinematic information of the reference point on the command trajectory, five interpolation points closest to the actual point are obtained. …”
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Nonlinear Disturbance Observer-Based Control for a Class of Port-Controlled Hamiltonian Disturbed Systems by Baozeng Fu, Qingzhi Wang, Wei He

“…In this paper, a composite control scheme is presented to asymptotically stabilize a class of port-controlled Hamiltonian systems under nonvanishing disturbances. First, based on the damping injection method and the nonlinear disturbance observer (NDOB) technique, the robust composite control strategy is designed. …”
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B1C navigation signal acquisition algorithm based on PCO+FFT by Xiaojun WANG, Ziqi ZHANG, Ying LI

“…In order to capture the B1C navigation signal with BOC modulation, a specific acquisition scheme of PCO+FFT was proposed. Firstly, based on in-depth analysis of the characteristics of B1C signal, the segment length and FFT points were selected. …”
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PIXEL LEVEL DATA FUSION OF MARS EXPRESS HRSC LINEAR PUSHBROOM IMAGERY BASED ON THE RIGOROUS GEOMETRIC MODEL by G. Xun, X. Qing, L. Yuange, H. Yifan, X. Shuai, L. Chaozhen

“…In this paper, the HRSC raw image is geometrically rectified firstly based on rigorous geometric model. Then, the panchromatic image and multi-spectral image are fused based on IHS transformation. …”
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New observer-based control design for mismatched uncertain systems with time-delay by Huynh Van Van

“…The mismatched uncertain time-delay systems investigated in this study include mismatched parameter uncertainties in the state matrix and in the delayed state matrix. First, based on a new lemma with appropriately choosing Lyapunov functional, new results for stabilization of mismatched uncertain time-delay systems are provided on the basis of a linear matrix inequality (LMI) framework and the asymptotic convergence properties for the estimation error is ensured. …”
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A novel method to solve the optimization problem of uncertain network system based on uncertainty theory by Xiaodie Lv, Yi Liu, Yihua Zhong

“…This paper employs the theories of uncertainty, uncertain programming and network optimization to solve the uncertain network optimization problem. First, based on uncertainty theory and uncertainty graph, we redefine the concept of an uncertain network system, and propose a unified identification method for an uncertain network system based on a conditional uncertain measure matrix. …”
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Orthogonal pinhole-imaging-based learning salp swarm algorithm with self-adaptive structure for global optimization by Zongshan Wang, Zongshan Wang, Hongwei Ding, Hongwei Ding, Jingjing Yang, Jingjing Yang, Peng Hou, Gaurav Dhiman, Gaurav Dhiman, Gaurav Dhiman, Jie Wang, Zhijun Yang, Zhijun Yang, Aishan Li

“…Salp swarm algorithm (SSA) is a simple and effective bio-inspired algorithm that is gaining popularity in global optimization problems. In this paper, first, based on the pinhole imaging phenomenon and opposition-based learning mechanism, a new strategy called pinhole-imaging-based learning (PIBL) is proposed. …”
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Stiffness Analysis of 4-PRP+3-UPS&PU Hybrid Machine Tool with Redundant Actuation by Liu Na, Mei Ying, Chen Jingyao, Liu Xingfang

“…A six degree of freedom 4-PRP+3-UPS&PU redundant hybrid machine tool is proposed,and the statics and static stiffness of the machine tool is studied. Firstly,based on the force Jacobi matrix,the static equilibrium equation is presented,and the mapping matrix between the external load and the driving force and the binding force of the branch is solved. …”
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Research on Two Kinds of Power Compensator System of Carrier-based Aircraft Based on Hdot Command by ZHANG Yang, ZHOU Yi, YAN Xianrong, YIN Dawei, QIAN Guohong

“…The use of power compensation system can greatly reduce the burden of pilot control,and can improve the dynamic response speed and control accuracy.This article focuses on the research of two carrier-based aircraftpower compensation control systems.Firstly,based on the Hdot command,the two approach power compensation systems of angle of attack and speed control are designed.Secondly,the simulation analysis is carried out for the two approach power compensation control systems,and the approach dynamic compensation response of the two compensation systems in the case of air-wake disturbance is further analyzed,and their basic principles are analyzed through the simulation results:the ability of the angle of attack power compensation system to stabilize the angle of attack is greater than that of the constant speed,and the trajectory control is also faster than the constant speed power compensation system.…”
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Dynamic optimization of tracked vehicle power train based on torsional vibration analysis by Shengping Fu, Shengbo Li, Ning Luo, Mishchenko Elena

“…Aiming at the vehicle power train, system dynamic optimization is profoundly studied based on the system torsional vibration characteristics analysis. First, based on the concentrated mass method, the general torsional vibration model of vehicle power train is established and solved after parameters’ (inertia, stiffness, and damping) matrix and mathematic constraint conditions are acquired. …”
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Augmented Quaternion MUSIC Method for Near-Field Noncircular Sources With a COLD Array by Tianyi Zhao, Zehao Zhang, Hua Chen, Lin Qi, Weiyue Liu

“…Based on the quaternion theory, a novel algorithm named non-circular augmented quaternion MUSIC (NCAQ-MUSIC) is proposed for DOA and range estimation of noncircular signals impinging on a concentered orthogonal loop and dipole (COLD) array. Firstly, based on the augmented quaternion, the proposed algorithm uses the noncircular characteristic of the signals to achieve the virtual array expansion; secondly, the DOA and range parameters can be completely separated in the principle of rank reduction, and finally, the parameters of DOA and range are estimated through one dimensional search. …”
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Research on Control System of Tower Concentrated Solar Power Plant by QIU Tao, XU Canling, WANG Wei

“…[Introduction] In order to solve the control problem of Tower Concentrated Solar Power. [Method] Firstly based on the astronomical algorithms for calculating the position of the sun. …”
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Estimating instantaneous frequency of multicomponent signal using optimization strategy in fractional domain by Liyun Xu, Wei Li

“…The method converts the IF estimation into the problem of function fitting in the two‐dimensional plane. First, based on the fractional window function with a specific angle, the energy of the multicomponent signal is concentrated around a certain signal component to obtain a relatively high‐resolution TF representation in fractional domain. …”
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Effective Parameters in the Design of a Loop Reactor for Bulk Propylene Polymerization with Z-N Catalyst by H. Abedini, M. Shahrokhi, M. Emami

“…The roles played by several parameters like particle growth factor, catalyst activity and solid fraction on reactor volume at different operating conditions are investigated. At first, based on a fixed production capacity and specific rate of catalyst, reactor volume is determined. …”
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The location-inventory model with risk pooling and split demand by Hao Xiong, Huili Yan

“…The demand depot could be split and served by more than one DC. First, based on the capacitated location-inventory model, the location-inventory model with split demand is presented. …”
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Quadcopter UAV attitude control based on DDPG by HUANG Xijie

“…Aiming at the problems of difficult implementation and poor robustness of quadrotor UAV attitude control in unknown environment, an intelligent attitude control method based on deep deterministic strategy (DDPG) algorithm is proposed. Firstly, based on the Euler-Poincare equation, the dynamic model of the quadrotor is established by computer symbolic derivation. …”
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Optimal operation and locating method of new energy building with shared charging service by Chang Liu, Wei Wang, Zhixun Wang, Shangfa Chen, Peifang Su, Hongyuan Gao, Chao Xu, Biyuan Ge, Hongfa Ding, Liang Liu

“…Therefore, this study proposes a shared charging concept for buildings, that is, shared photovoltaic, charging, and energy storage building (sPCEB). First, based on the analysis results of big data in cities or settlements of people, a locating method of the sPCEB system is introduced, and further proposes an optimal operating strategy that maximizes the combined benefit of the building. …”
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Study on Seismic Behaviors of the Pagoda in Songyue Temple by Ma Shaochun, Li Lianghui, Bao Peng

“…The dynamic properties and anti-earthquake behaviors of Pagoda in Songyue Temple was studied by numerical simulation method. Firstly, based on the its contexture, the equivalent model reflecting the force transfer mechanism is established. …”
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The Skeleton: Connecting Large Scale Structures to Galaxy Formation by Pichon, C, Gay, C, Pogosyan, D, Prunet, S, Sousbie, T, Colombi, S, Slyz, A, Devriendt, J

“…We report on two quantitative, morphological estimators of the filamentary structure of the Cosmic Web, the so-called global and local skeletons. The first, based on a global study of the matter density gradient flow, allows us to study the connectivity between a density peak and its surroundings, with direct relevance to the anisotropic accretion via cold flows on galactic halos. …”