The paper presents results of studies on the sensorless drive with permanent magnet synchronous motor (PMSM) supplied through the motor choke. The position is estimated using a modified Luenberger observer. Its modification consists in using a PII correction function instead a proportional one, which gives smaller estimation errors. The advantages of that observer structure are simple structure...

Model identifiability concerns the uniqueness of uncertain model parameters to be estimated from available process data and is often thought as a prerequisite for physical interpretability model. Nevertheless, may challenging obtain in practice due both stochastic deterministic uncertainties, e.g. low variability, noisy measurements, erroneous structure, stochasticity locality optimization algo...

This article proposes a control strategy for an oil well operating via gas-lift. The well model is implemented in the OLGA simulator (Scandpower) using an orifice valve (no moving parts) downhole with control in the gas lift surface valve and production choke. The dynamic identification uses the knowledge of the process static gain as the nonlinear static block of a Hammerstein model representa...

This paper discusses the influence of time inconsistency problem on technology-leading firms' choice between in-house production and technology transfer. Because of incredibility of innovator's commitment of not exporting after licensing, she may not be able to extract rent from licensing as much as when she could commit credibly. Facing this distortion, she chooses in-house production when the...