Device and computer-implemented method for determining variable of technical system

A device, a computer program and a method for determining a variable of a technical system, in particular a fuel cell or an internal combustion engine, determine an input variable of a first model for determining a variable having a first temporal resolution, providing a first time sequence having a first temporal resolution and a second time sequence having a second temporal resolution different from the first temporal resolution, each of which comprises a value characterizing an operating variable of the technical system, mapping the second time sequence to the first prediction by means of a second model for determining a first prediction of a technical system parameter having a second time resolution, determining a parameter of the second model by means of the second time sequence and mapping it to a parameter of a third model having the first time resolution, and mapping the first time series to a second prediction having the first time resolution in a third model, the input parameters comprising at least