Tag

Data Assimilation

All articles tagged with #data assimilation

science-and-technology1 year ago•5 min saved

"Digital Twin Successfully Predicts and Controls Fusion Plasma in Groundbreaking Demonstration"

Researchers have successfully demonstrated the predictive control of fusion plasma using a digital twin control system that incorporates real-time observations and data assimilation. This new control approach, demonstrated at the Large Helical Device (LHD), allows for the accurate prediction and control of fusion plasma behavior, paving the way for advanced controls essential for the realization of fusion power generation. The system, developed by a research group led by Assistant Professor Yuya Morishita and Professor Sadayoshi Murakami of Kyoto University and other collaborators, is expected to become fundamental to fusion reactor control and has the potential to address other societal issues involving uncertain factors.

via Phys.org|

#data-assimilation #digital-twin #fusion-energy

science-and-technology2 years ago•59 min saved

Unveiling a System's State through Data: Estimating Unknown Governing Equations

Researchers have developed a method for state estimation that can handle model-structure uncertainty, allowing for the estimation of unknown governing equations. By simultaneously learning the motion model and state estimate using a set of symbolic differential equations, this approach enables state estimation in situations with substantial modeling errors or completely unknown dynamics. The method utilizes a reparametrization trick for Markov Gaussian processes and outperforms standard state-estimation techniques in the presence of modeling errors. It also allows for the discovery of missing terms in the governing equations using indirect observations.

via Nature.com|

#data-assimilation #mathematical-models #science-and-technology