Results 31 to 40 of about 7,374 (201)

Precise Orbit Determination Based on the Unscented Transform for Optical Observations

open access: yesJournal of Astronomy and Space Sciences, 2019
In this study, the precise orbit determination (POD) software is developed for optical observation. To improve the performance of the estimation algorithm, a nonlinear batch filter, based on the unscented transform (UT) that overcomes the disadvantages ...
Hyewon Hwang, Eunji Lee, Sang-Young Park
doaj   +1 more source

Time-Varying Degradation Model for Remaining Useful Life Prediction of Rolling Bearings under Variable Rotational Speed

open access: yesApplied Sciences, 2022
It is difficult to accurately extract the health index of non-stationary signals of rolling bearings under variable rotational speed, which also leads to greater prediction error for bearing degradation models with fixed parameters.
Wenliao Du, Xukun Hou, Hongchao Wang
doaj   +1 more source

Event-Triggered Forecasting-Aided State Estimation for Active Distribution System With Distributed Generations

open access: yesFrontiers in Energy Research, 2021
In this study, the forecasting-aided state estimation (FASE) problem for the active distribution system (ADS) with distributed generations (DGs) is investigated, considering the constraint of data transmission.
Xingzhen Bai   +4 more
doaj   +1 more source

Statistical Modelling of Cell Movement [PDF]

open access: yes, 2017
In this paper we demonstrate an application of the unscented Kalman filter in the context of cell movement, using a model defined in terms of stochastic differential equations (SDEs)
Giurghita, Diana, Husmeier, Dirk
core   +2 more sources

A novel weight coefficient calculation method for the real‐time state monitoring of the lithium‐ion battery packs under the complex current variation working conditions

open access: yesEnergy Science & Engineering, 2019
A novel real‐time state monitoring method is proposed to realize the real‐time energy management of the lithium‐ion battery packs, which is conducted in the iterative computational calculation process by introducing an improved weighting factor‐unscented
Shun‐Li Wang   +5 more
doaj   +1 more source

PHACT: parallel HOG and correlation tracking [PDF]

open access: yes, 2014
Histogram of Oriented Gradients (HOG) based methods for the detection of humans have become one of the most reliable methods of detecting pedestrians with a single passive imaging camera. However, they are not 100 percent reliable. This paper presents an
Birch, Philip   +3 more
core   +1 more source

Real-time SOC co-estimation algorithm for Li-ion batteries based on fast square-root unscented Kalman filters

open access: yes工程科学学报, 2021
The Li-ion battery is an important energy source for electric vehicles (EVs), and the accurate estimation of the battery power state provides a reliable reference for balancing the battery packing and battery management system (BMS).
Jun-hui ZHANG   +3 more
doaj   +1 more source

State Estimation for Kite Power Systems with Delayed Sensor Measurements [PDF]

open access: yes, 2017
We present a novel estimation approach for airborne wind energy systems with ground-based control and energy generation. The estimator fuses measurements from an inertial measurement unit attached to a tethered wing and position measurements from a ...
Hesse, Henrik   +3 more
core   +1 more source

Precise Train Positioning With Unscented Kalman Filter and Low-Cost Sensors

open access: yesIEEE Open Journal of Intelligent Transportation Systems
This contribution is embedded into the challenge of track fault localization with low-cost hardware. For precise localization on the track, with an accuracy of a few decimeters for separating overlapping errors, a high resolution trajectory is needed and
R. Frolow, L. Zhang, V. Schwieger
doaj   +1 more source

An image segmentation based algorithm for imaging of slow slip earthquakes

open access: yesGeodesy and Geodynamics, 2018
Laboratory experiments next to a variety of observations, especially in subduction zones, have explored the existence of a premonitory stable slow slip growth phase preceding large earthquakes.
Mohammad Hazrati Kashi   +2 more
doaj   +1 more source

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