Sökning: "closed-loop identification"
Visar resultat 31 - 35 av 47 avhandlingar innehållade orden closed-loop identification.
31. Robust Control of an Induction Motor Drive
Sammanfattning : This thesis considers robust control of an induction motor drive, consisting of an input filter, a voltage source inverter and one or several induction motors in parallel. The motor torque is here controlled by using the method Indirect Self Control (ISC), and power oscillations between the inverter and the input filter are damped by means of a stabilization controller in an outer feedback loop. LÄS MER
32. Graybox Modelling of Ships Using Indirect Input Measurements
Sammanfattning : A ship's roll dynamics is very sensitive to changes in the loading conditions and a worst-case scenario is that the ship will capsize. Actually, the mass and center of mass are two of the most influential parameters in most mechanical systems. LÄS MER
33. Frequency Analysis of Sampled-Data Systems Applied to a Lime Slaking Process
Sammanfattning : Single-rate and multirate sampled-data (SD) systems as well as linear time periodic (LTP) systems with discrete jumps are analyzed in the frequency domain. The focus of the analysis is both on rejection of disturbances and on robust stability properties. LÄS MER
34. Model-Based Investigation of Machining Systems Characteristics : Static and Dynamic Stability Analysis
Sammanfattning : The increasing demands for precision and efficiency in machining call for new control strategies for machining systems based on the identification of static and dynamic characteristics under operational conditions. By considering the machining system as a closed-loop system consisting of a machine tool structure and a machining process, the join system characteristics can be analyzed. LÄS MER
35. Stabilization of an induction machine drive
Sammanfattning : Modern electric trains almost exclusively use inductionmachines fed by voltage source inverters for propulsion. Toreduce external as well as internal disturbances, an LC-filteris inserted between the input terminals of the drive and theinverter. LÄS MER