نتایج جستجو برای: displacement error

تعداد نتایج: 306570  

Journal: :Journal of Intelligent and Robotic Systems 2007
Xin W. Chen Shimon Y. Nof

This article presents research on error detection and prediction algorithms in robotics. Errors, defined as either agent error or Co-net error, are analyzed and compared. Three new error detection and prediction algorithms (EDPAs) are then developed, and validated by detecting and predicting errors in typical pick and place motions of an Adept Cobra 800 robot. A laser Doppler displacement meter...

2016
Sofía Ruiz de Gauna Digna M González-Otero Jesus Ruiz J J Gutiérrez James K Russell

Background. Cardiopulmonary resuscitation (CPR) feedback devices are being increasingly used. However, current accelerometer-based devices overestimate chest displacement when CPR is performed on soft surfaces, which may lead to insufficient compression depth. Aim. To assess the performance of a new algorithm for measuring compression depth and rate based on two accelerometers in a simulated re...

2016
JAMES G. SIMMONDS

The relative mean square error in the three-dimensional stress field predicted by classical plate theory is shown to be OQi/L^)2, where h is the plate thickness and Lj. is a mean square measure of the wavelength of the midplane deformation pattern. This improves a recent result of Nordgren who obtained a relative error estimate of 0(h/L*). The improved error estimate, which, like Nordgren's, is...

2016
Carlos Cruz-Montecinos Mauricio Cerda Rodolfo Sanzana-Cuche Jaime Martín-Martín Antonio Cuesta-Vargas

BACKGROUND The fascia provides and transmits forces for connective tissues, thereby regulating human posture and movement. One way to assess the myofascial interaction is a fascia ultrasound recording. Ultrasound can follow fascial displacement either manually or automatically through two-dimensional (2D) method. One possible method is the iterated Lucas-Kanade Pyramid (LKP) algorithm, which is...

2014
Ping GAN Guowen HU Zhenzhen LI Zhuo CHEN Xiao CHENG Xiaosong ZHANG

Angle sensor is the core component in the surface displacement measuring device, whose manufacturing process, fixing position and internal device performance can affect the testing accuracy in many aspects. This paper would present a new displacement calculation based on coordinating transformation and employ particle swarm method to calibrate the data. Experimental results show that the amende...

Journal: :Neural Computing and Applications 2023

In this paper, we introduce a supervised learning algorithm, which avoids backward recursive gradient computation, for training deep convolutional spiking neural networks (SNNs) with single-spike-based temporal coding. The algorithm employs linear approximation to compute the derivative of spike latency respect membrane potential, and it uses neurons piecewise postsynaptic potential reduce comp...

Journal: :SIAM J. Numerical Analysis 2002
Eleanor W. Jenkins Béatrice Rivière Mary F. Wheeler

In this paper we derive optimal a priori L∞(L2) error estimates for mixed finite element displacement formulations of the acoustic wave equation. The computational complexity of this approach is equivalent to the traditional mixed finite element formulations of the second order hyperbolic equations in which the primary unknowns are pressure and the gradient of pressure. However, the displacemen...

2006
Paolo Fornasini

Tanks to the peculiar sensitivity to correlation of vibrational motion, EXAFS contains original information on thermal properties of crystals. The thermal expansions measured by EXAFS and by Bragg scattering have a different physical meaning. They can be experimentally distinguished by accurate temperature dependent measurements, leading to the evaluation of the perpendicular mean square relati...

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