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基于SLIP模型的液压驱动单腿机器人竖直跳跃控制
弹簧倒立摆 单腿机器人 液压驱动 竖直跳跃
2019/3/5
针对液压驱动足式机器人竖直跳跃控制，提出一种基于SLIP竖直跳跃动力学模型实现液压驱动机器人竖直跳跃的控制策略。分析SLIP竖直跳跃动力学模型并求解其动力学微分方程得到质心运动轨迹，将关节型单腿机器人竖直跳跃髋部的运动轨迹映射到SLIP模型质心的运动轨迹，通过机器人运动学逆解得到机器人关节运动轨迹，以此驱动关节运动；同时建立关节型单腿机器人竖直跳跃动力学方程和液压驱动执行器动力学方程，应用MATL...
Correction of source-rock permeability measurements owing to slip flow and Knudsen diffusion: a method and its evaluation
Shale gas Permeability Knudsen diffusion Unconventional reservoir Source rock
2018/4/2
Source-rock permeability is a key parameter that controls the gas production rate from unconventional reservoirs. Measured source-rock permeability in the laboratory, however, is not an intrinsic prop...
COSEISMIC DEFORMATION FIELD AND FAULT SLIP DISTRIBUTION OF THE 2015 CHILE Mw8.3 EARTHQUAKE
Chile earthquake InSAR coseismic deformation slip distribution inversion
2016/11/24
On September 16, 2015, a magnitude 8.3 earthquake struck west of Illapel, Chile. We analyzed Sentinel-1A/IW InSAR data on the descending track acquired before and after the Chile Mw8.3 earthquake of 1...
Continuum mathematical modeling of slip weakening in geological systems
Continuum mathematical modeling slip weakening geological systems
2015/7/1
Deformation of the Earth’s crust from tectonic forces involves both diffuse elastic and plastic strains, rigid body translations and rotations, and localized deformations concentrated along narrow fau...
Mechanical models of fracture reactivation and slip on bedding surfaces during folding of the asymmetric anticline at Sheep Mountain,Wyoming
Fold Fracture reactivation Bed parallel slip FEM modeling Frictional contact Sheep Mountain,Wyoming
2015/7/1
We use finite element methods to investigate the reactivation of fractures (opening and shearing) and the development of bedding-surface slip during the deformation of the asymmetric anticline at Shee...
Effect of Slip on Flow Past Superhydrophobic Cylinders
Slip on Flow Past Superhydrophobic Cylinders
2014/10/23
Superhydrophobic surfaces are a class of surfaces that have a microscale roughness imposed on an already hydrophobic surface, akin to a lotus leaf. These surfaces have been shown to produce significan...
Development of new footwear sole surface pattern for prevention of slip-related falls
Coefficient of friction Fall Footwear Slip Rubber
2012/4/12
In this study, a new rubber surface pattern for a footwear sole was developed to prevent slip-related falls. This pattern shows a high static coefficient of friction (SCOF) and a high dynamic coeffici...
Capillary filling with giant liquid/solid slip: dynamics of water uptake by carbon nanotubes
Capillary filling giant liquid/solid slip dynamics water uptake carbon nanotubes
2011/8/17
Abstract: This article discusses the way the standard description of capillary filling dynamics has to be modified to account for liquid/solid slip in nanometric pores. It focuses in particular on the...
Cycle Slip Mitigation in POLMUX-QPSK Modulation
Cycle Slip Mitigation POLMUX-QPSK Modulation
2015/5/20
We demonstrate a pilot-symbol assisted joint polarization carrier phase estimation technique that detects cycle slip and avoid error propagation. Coherent detection without differential coding is feas...
Natural convection flow of a Couple stress fluid between two vertical parallel plates with Hall and Ion-slip effects
Free convection Couple stress fluid Magnetohydrodynamics Hall and ion-slip effects HAM
2012/2/24
The Hall and ion-slip effects on fully developed electrically conducting couple stress fluid flow between vertical parallel plates in the presence of a temperature dependent heat source are investigat...
Cycle Slip Probability in 100G PM-QPSK Systems
Fiber Optics Communications Coherent communications
2015/6/10
We estimate asymptotic probabilities of a cycle slip for a non-decision aided feedforward carrier synchronizer in dispersion-uncompensated optical lines with negligible nonlinear crosstalk.
考虑粘滑摩擦的时变振动系统模态参数辨识（Modal Parameter Identification of Time Varying Vibration Systems Subjected to Stick-slip Friction）
时变系统 模态参数 时变多变量Prony法
2010/1/28
将摩擦因素引入时变振动系统的模态辨识中。采用时变多变量Prony法，对振动系统的多输出响应信号建立时变多变量Prony模型，并利用递推最小二乘法估计模型参数，提取出振动系统的模态特征信息。数值仿真中，对含复合频率信号的频率进行了辨识，辨识值与理论值较好的吻合性验证了该方法的有效性。应用实例中，对平面两杆操作臂中的滑动质量块建立了考虑LuGre摩擦的运动方程，利用时变多变量Prony法辨识出含粘滑摩...
Lubrication of a Porous Exponential Slider Bearing by Ferrofluid with Slip Velocity
Ferrofluid Lubrication Porous stator Exponential slider Slip velocity
2009/10/12
A bearing with its slider in exponential form and stator with a porous facing of uniform thickness was analysed using a ferrofluid lubricant and considering slip velocity. Expressions for dimensionles...
Interaction of Couple Stresses and Slip Flow on Peristaltic Transport in Uniform and Nonuniform Channels
Peristalsis Couple stresses Slip flow
2009/10/9
The effect of slip velocity on peristaltic flow of a couple stress fluid in uniform and nonuniform symmetric channels is studied. This problem has numerous applications. It serves as a model for the b...
Instantaneous Triple-Frequency GPS Cycle-Slip Detection and Repair
Instantaneous Triple-Frequency GPS Cycle-Slip Detection and Repair
2009/9/3
real-time algorithm to detect, determine, and validate the cycle-slips for triple-frequency GPS is proposed. The cycle-slip detection is implemented by simultaneously applying two geometry-free phase ...