Search scope:
排序: Display mode:
Research on Multi-level Software Rejuvenationof Computing System
You Jing,Xu Jian,Li Qianmu, Liu Fengyu
Strategic Study of CAE 2007, Volume 9, Issue 2, Pages 36-37
Recently,the phenomenon of software aging,one in which error conditions actually accrue with time and/or load,has been observed. To counteract software aging, which can cause outages resulting in high costs,a proactive restart technique called software rejuvenation is proposed and the rejuvenation cost is analyzed.In order to reduce the rejuvenation cost and improve software availability and reliability further, rejuvenation granularity should be finer than before. Therefore a fine-grained proactive technique——multilevel software rejuvenation is put forward. Firstly, the degradation law of system performance can be determined by analyzing the occupation and wastage of system resources. Based on the law and the software architecture,the two software rejuvenation policies, i.e. time-based multilevel software rejuvenation policy and detection-based multilevel software rejuvenation policy, can be drafted, and the rejuvenation granularity can be determined. Their formal description of policies is given by finite-state automaton. Finally, the entire process is illustrated with a web service case. This paper provides a case to illustrate the process, and the simulation results of the case show that the multilevel software rejuvenation policy can reduce the MTTR and rejuvenation cost further, comparing with the only system-level software rejuvenation. As a consequence,the system availability and reliability are enhanced.
Keywords: source filter neural network hysteresis comparator
Current Source Active Power Filter Control UsingNeural Network Technologies
Wang Ping,Zhang Ke, Xu Huijun
Strategic Study of CAE 2007, Volume 9, Issue 1, Pages 40-43
Keywords: source filter neural network hysteresis comparator
Analysis of the dynamic hysteresis characteristic of finger seal
LEI Yanni, CHEN Guoding
Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1, Pages 32-36 doi: 10.1007/s11465-007-0005-y
Keywords: FS necessary hysteresis characteristic optimization spring
Research on applications of piezoelectric materials in smart structures
Jinhao QIU, Hongli JI
Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1, Pages 99-117 doi: 10.1007/s11465-011-0212-4
Keywords: piezoelectric materials vibration control energy harvesting structural health monitoring piezoelectric hysteresis
Dynamic characteristics of a magnetorheological pin joint for civil structures
Yancheng LI,Jianchun LI
Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1, Pages 15-33 doi: 10.1007/s11465-014-0283-0
Magnetorheological (MR) pin joint is a novel device in which its joint moment resistance can be controlled in real-time by altering the applied magnetic field. The smart pin joint is intended to be used as a controllable connector between the columns and beams of a civil structure to instantaneously shift the structural natural frequencies in order to avoid resonance and therefore to reduce unwanted vibrations and hence prevent structural damage. As an intrinsically nonlinear device, modelling of this MR fluid based device is a challenging task and makes the design of a suitable control algorithm a cumbersome situation. Aimed at its application in civil structure, the main purpose of this paper is to test and characterise the hysteretic behaviour of MR pin joint. A test scheme is designed to obtain the dynamic performance of MR pin joint in the dominant earthquake frequency range. Some unique phenomena different from those of MR damper are observed through the experimental testing. A computationally-efficient model is proposed by introducing a hyperbolic element to accurately reproduce its dynamic behaviour and to further facilitate the design of a suitable control algorithm. Comprehensive investigations on the model accuracy and dependences of the proposed model on loading condition (frequency and amplitude) and input current level are reported in the last section of this paper.
Keywords: Magnetorheological pin joint hyperbolic hysteresis model experimental testing frequency dependence
Electromagnetic modeling and control of switched reluctance motor using finite elements
Ali ARIF,Abderrazak GUETTAF,Ahmed Chaouki MEGHERBI,Said BENRAMACHE,Fateh BENC HABANE
Frontiers in Energy 2014, Volume 8, Issue 3, Pages 355-363 doi: 10.1007/s11708-014-0319-5
Keywords: switched reluctance motor (SRM) hysteresis control finite element analysis
Frontiers of Structural and Civil Engineering Pages 1145-1162 doi: 10.1007/s11709-023-0945-2
Keywords: seismic resilience self-centering rubber layer flag-shaped hysteresis loop parametric study
Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials
Linxiang WANG, Roderick MELNIK, Fuzai LV
Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3, Pages 287-291 doi: 10.1007/s11465-011-0230-2
Keywords: differential model state space electromechanical switching butterfly effects hysteresis
Dynamical Experiment Research on New Seismic Isolation Bearings with SMA Wires
Deng Zongcai,Sun Hongjun,Liu Chunguo,Niu Kun,Deng Hongliang
Strategic Study of CAE 2005, Volume 7, Issue 12, Pages 61-68
Keywords: shape memory alloy seismic isolation bearings initial stiffness hysteresis energy dissipation equivalent
Meiju YANG,Chunxia LI,Guoying GU,Limin ZHU
Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1, Pages 37-42 doi: 10.1007/s11465-015-0326-1
Keywords: piezoelectric actuators hysteresis Prandtl-Ishlinskii rate-dependent
Huaneng XU, Haiying CHEN, Weining HUANG,
Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4, Pages 383-385 doi: 10.1007/s11705-009-0249-7
Keywords: separation technique thermal hysteresis cold-acclimated purification X-114
Cyclic stress-strain behavior of structural steel with yield-strength up to 460 N/mm
Yiyi CHEN,Wei SUN,Tak-Ming CHAN
Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2, Pages 178-186 doi: 10.1007/s11709-014-0245-y
Keywords: constitutive model finite element analysis hysteresis curve Ramberg-Osgood equation
Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG
Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1, Pages 96-106 doi: 10.1007/s11465-018-0498-6
Keywords: thermoplastic polyurethane microcellular injection molding cavity expansion compressive strength hysteresis
Qi Peng,Hou Yijun
Strategic Study of CAE 2006, Volume 8, Issue 4, Pages 39-45
Keywords: mud mass transport wave attenuation soft mud bed rheological model
T. CHELIDZE, T. MATCHARASHVILI, V. ABASHIDZE, M. KALABEGISHVILI, N. ZHUKOVA
Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2, Pages 188-205 doi: 10.1007/s11709-013-0199-5
Keywords: real time monitoring telemetry dam tilts diagnostic tools hysteresis nonlinear dynamics
Title Author Date Type Operation
Research on Multi-level Software Rejuvenationof Computing System
You Jing,Xu Jian,Li Qianmu, Liu Fengyu
Journal Article
Current Source Active Power Filter Control UsingNeural Network Technologies
Wang Ping,Zhang Ke, Xu Huijun
Journal Article
Analysis of the dynamic hysteresis characteristic of finger seal
LEI Yanni, CHEN Guoding
Journal Article
Research on applications of piezoelectric materials in smart structures
Jinhao QIU, Hongli JI
Journal Article
Dynamic characteristics of a magnetorheological pin joint for civil structures
Yancheng LI,Jianchun LI
Journal Article
Electromagnetic modeling and control of switched reluctance motor using finite elements
Ali ARIF,Abderrazak GUETTAF,Ahmed Chaouki MEGHERBI,Said BENRAMACHE,Fateh BENC HABANE
Journal Article
Parametric study on seismic performance of self-centering reinforced concrete column with bottom-placed rubber layer
Journal Article
Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials
Linxiang WANG, Roderick MELNIK, Fuzai LV
Journal Article
Dynamical Experiment Research on New Seismic Isolation Bearings with SMA Wires
Deng Zongcai,Sun Hongjun,Liu Chunguo,Niu Kun,Deng Hongliang
Journal Article
A rate-dependent Prandtl-Ishlinskii model for piezoelectric actuators using the dynamic envelope function based play operator
Meiju YANG,Chunxia LI,Guoying GU,Limin ZHU
Journal Article
Purification of ice structuring protein complexes from winter wheat using Triton X-114 phase partitioning
Huaneng XU, Haiying CHEN, Weining HUANG,
Journal Article
Cyclic stress-strain behavior of structural steel with yield-strength up to 460 N/mm
Yiyi CHEN,Wei SUN,Tak-Ming CHAN
Journal Article
Microcellular injection molding process for producing lightweight thermoplastic polyurethane with customizable properties
Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG
Journal Article
Modeling of Water Waves Interaction With Soft Mud Beds: Based on an Empirical Rheology Model Featured by Hysteresis
Qi Peng,Hou Yijun
Journal Article