Results 31 to 40 of about 2,351,578 (288)

Optimal, reliable estimation of quantum states [PDF]

open access: yes, 2006
Accurately inferring the state of a quantum device from the results of measurements is a crucial task in building quantum information processing hardware.
Aliferis P   +10 more
core   +2 more sources

Multipath Estimation Based on Modified $\varepsilon$ -Constrained Rank-Based Differential Evolution With Minimum Error Entropy

open access: yesIEEE Access, 2018
Multipath is one of the dominant error sources for high-precision positioning systems, such as global navigation satellite systems. The minimum mean square error criterion is usually employed for multipath estimation under the assumption of Gaussian ...
Lan Cheng   +3 more
doaj   +1 more source

Two New Families of Local Asymptotically Minimax Lower Bounds in Parameter Estimation

open access: yesEntropy
We propose two families of asymptotically local minimax lower bounds on parameter estimation performance. The first family of bounds applies to any convex, symmetric loss function that depends solely on the difference between the estimate and the true ...
Neri Merhav
doaj   +1 more source

The Method of Mass Estimation Considering System Error in Vehicle Longitudinal Dynamics

open access: yesEnergies, 2018
Vehicle mass is a critical parameter for economic cruise control. With the development of active control, vehicle mass estimation in real-time situations is becoming notably important.
Nan Lin, Changfu Zong, Shuming Shi
doaj   +1 more source

Adaptive finite-time parameter estimation for grid-connected converter with LCL filter

open access: yesFrontiers in Energy Research, 2022
This study proposes an online finite-time adaptive parameter estimation method for grid-connected voltage source inverter (VSI) with LCL filter. In this framework, a time-continuous state-space system model is first developed, which is different from the
Xinze Xi   +6 more
doaj   +1 more source

Overviews of Optimization Techniques for Geometric Estimation [PDF]

open access: yes, 2013
We summarize techniques for optimal geometric estimation from noisy observations for computer vision applications. We first discuss the interpretation of optimality and point out that geometric estimation is different from the standard statistical ...
Kanatani, Kenichi
core   +1 more source

Using a simulation analysis to evaluate the impact of crop mapping error on crop area estimation from stratified sampling

open access: yesInternational Journal of Digital Earth, 2019
To analyze the efficiency of area estimations (i.e. estimation accuracy and variation of estimation) impacted by crop mapping error, we simulated error at eight levels for thematic maps using a stratified sampling estimation methodology. The results show
Peijun Sun   +2 more
doaj   +1 more source

Speed Estimation of PMSM Based on a Super-Twisting Slide Mode Observer

open access: yesMachines, 2022
To limit the high-frequency chattering originating from the conventional sliding mode observer in a PMSM sensorless control system of vacuum pumps and reduce the steady-state error caused by the phase lag of the coordinate system on the estimated speed ...
Long Li   +3 more
doaj   +1 more source

The estimation of truncation error by τ-estimation revisited [PDF]

open access: yesJournal of Computational Physics, 2012
The aim of this paper was to accurately estimate the local truncation error of partial differential equations, that are numerically solved using a finite difference or finite volume approach on structured and unstructured meshes. In this work, we approximated the local truncation error using the @t-estimation procedure, which aims to compare the ...
Fraysse, François   +2 more
openaire   +3 more sources

Mitigation of cross-saturation effects in resonance-based sensorless switched reluctance drives [PDF]

open access: yes, 2010
The stator and rotor yoke in a switched reluctance motor form magnetic circuit parts that are typically shared by different phases. If these parts saturate due to the excitation of one phase, this will lead to a change of the magnetic characteristics of ...
Geldhof, Kristof   +2 more
core   +2 more sources

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