A parameter estimation scheme for multi-component BPSK interferences

2015 ◽  
Author(s):  
Jian Li ◽  
Junwei Nie ◽  
Feixue Wang ◽  
Ling Yong
Keyword(s):  
Parameter Estimation ◽  
Estimation Scheme ◽  
Parameter Estimation Scheme

scholarly journals Constrained Parameter Estimation for a Mechanistic Kinetic Model of Cobalt–Hydrogen Electrochemical Competition during a Cobalt Removal Process

Entropy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 387
Author(s):  
Yiting Liang ◽  
Yuanhua Zhang ◽  
Yonggang Li
Keyword(s):  
Parameter Estimation ◽  
Kinetic Model ◽  
Model Parameters ◽  
Hydrogen Ions ◽  
Removal Process ◽  
Cobalt Removal ◽  
Estimation Scheme ◽  
Zinc Hydrometallurgy ◽  
The Impact ◽  
Parameter Estimation Scheme

A mechanistic kinetic model of cobalt–hydrogen electrochemical competition for the cobalt removal process in zinc hydrometallurgical was proposed. In addition, to overcome the parameter estimation difficulties arising from the model nonlinearities and the lack of information on the possible value ranges of parameters to be estimated, a constrained guided parameter estimation scheme was derived based on model equations and experimental data. The proposed model and the parameter estimation scheme have two advantages: (i) The model reflected for the first time the mechanism of the electrochemical competition between cobalt and hydrogen ions in the process of cobalt removal in zinc hydrometallurgy; (ii) The proposed constrained parameter estimation scheme did not depend on the information of the possible value ranges of parameters to be estimated; (iii) the constraint conditions provided in that scheme directly linked the experimental phenomenon metrics to the model parameters thereby providing deeper insights into the model parameters for model users. Numerical experiments showed that the proposed constrained parameter estimation algorithm significantly improved the estimation efficiency. Meanwhile, the proposed cobalt–hydrogen electrochemical competition model allowed for accurate simulation of the impact of hydrogen ions on cobalt removal rate as well as simulation of the trend of hydrogen ion concentration, which would be helpful for the actual cobalt removal process in zinc hydrometallurgy.

Modeling and Control of Multiple Web Spans Using State Estimation

1989 ◽  
Vol 111 (3) ◽  
pp. 505-510 ◽  
Author(s):  
G. E. Young ◽  
J. J. Shelton ◽  
C. Kardamilas
Keyword(s):  
Parameter Estimation ◽  
State Estimation ◽  
Modeling And Control ◽  
Physical Constraints ◽  
Estimation Scheme ◽  
And Control ◽  
Lateral Positioning ◽  
High Processing ◽  
Parameter Estimation Scheme ◽  
The Web

Web processing systems rely on accurate lateral positioning to achieve high processing speeds and improved product quality. Due to physical constraints in some processing lines placement of the edge sensor near the web guide is not possible. As a result, large lateral oscillation and/or web instability have been observed. A new model is developed for lateral web dynamics. Experimental verification has justified the structure of the model. A parameter estimation scheme is used to tune the model for imperfections not originally incorporated. State estimation is then used to predict lateral web position on a downstream sensor. Desirable control is achieved and is further improved with the use of the feedforward sensor. Predicted and experimental results are compared.

scholarly journals Entanglement-Free Parameter Estimation of Generalized Pauli Channels

Quantum ◽  
2021 ◽  
Vol 5 ◽  
pp. 490
Author(s):  
Junaid ur Rehman ◽  
Hyundong Shin
Keyword(s):  
Parameter Estimation ◽  
Measurement Errors ◽  
Quantum Algorithms ◽  
Constant Factor ◽  
Error Mitigation ◽  
Estimation Problems ◽  
Estimation Scheme ◽  
State Tomography ◽  
The Mean ◽  
Parameter Estimation Scheme

We propose a parameter estimation protocol for generalized Pauli channels acting on d-dimensional Hilbert space. The salient features of the proposed method include product probe states and measurements, the number of measurement configurations linear in d, minimal post-processing, and the scaling of the mean square error comparable to that of the entanglement-based parameter estimation scheme for generalized Pauli channels. We also show that while measuring generalized Pauli operators the errors caused by the Pauli noise can be modeled as measurement errors. This makes it possible to utilize the measurement error mitigation framework to mitigate the errors caused by the generalized Pauli channels. We use this result to mitigate noise on the probe states and recover the scaling of the noiseless probes, except with a noise strength-dependent constant factor. This method of modeling Pauli channel as measurement noise can also be of independent interest in other NISQ tasks, e.g., state tomography problems, variational quantum algorithms, and other channel estimation problems where Pauli measurements have the central role.

scholarly journals A regional parameter estimation scheme for a pan-European multi-basin model

2016 ◽  
Vol 6 ◽  
pp. 90-111 ◽  
Author(s):  
Yeshewatesfa Hundecha ◽  
Berit Arheimer ◽  
Chantal Donnelly ◽  
Ilias Pechlivanidis
Keyword(s):  
Parameter Estimation ◽  
Estimation Scheme ◽  
Parameter Estimation Scheme
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