Search results for "Nonlinear transformation"

showing 3 items of 3 documents

Active Disturbance Rejection Control of Synchronous Reluctance Motors

2020

This paper describes how the ADRC (Active Disturbance Rejection Control) strategy can be successfully applied to SynRM (Synchronous Reluctance Motor) drives. The ADRC is an adaptive robust extension of the input-output Feedback Linearization Control (FLC). Its main feature is that the nonlinear transformation of the state is computed on-line and not by using the model. As a consequence, any unmodelled dynamics or uncertainty of the parameters can be addressed. The control strategy has been verified successfully with experimental tests confirming the high dynamic response of the drive.

Computer scienceMagnetic reluctance05 social sciences020207 software engineering02 engineering and technologyActive disturbance rejection controlSettore ING-INF/04 - AutomaticaControl theoryActive disturbance rejection control synchronous reluctance motors feedback linearization.0202 electrical engineering electronic engineering information engineering0501 psychology and cognitive sciencesFeedback linearizationSynchronous reluctance motorNonlinear transformation050107 human factors
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Direct Derivation of Corrective Terms in SDE Through Nonlinear Transformation on Fokker–Planck Equation

2004

This paper examines the problem of probabilistic characterization of nonlinear systems driven by normal and Poissonian white noise. By means of classical nonlinear transformation the stochastic differential equation driven by external input is transformed into a parametric-type stochastic differential equation. Such equations are commonly handled with Ito-type stochastic differential equations and Ito's rule is used to find the response statistics. Here a different approach is proposed, which mainly consists in transforming the Fokker–Planck equation for the original system driven by external input, in the transformed probability density function of the new state variable. It will be shown …

Kushner equationDifferential equationApplied MathematicsMechanical EngineeringNonlinear transformationMathematical analysisFirst-order partial differential equationFokker-Planck equationAerospace EngineeringOcean EngineeringPoisson inputItô's calculuIntegrating factorStochastic partial differential equationStochastic differential equationQuantum stochastic calculusControl and Systems EngineeringApplied mathematicsFokker–Planck equationStochastic differential calculusElectrical and Electronic EngineeringMathematicsNonlinear Dynamics
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Active disturbance rejection control of linear induction motor

2017

This paper proposes the theoretical framework and the experimental application of the active disturbance rejection control to linear induction motors. Such a nonlinear control (ADRC) technique can be viewed as a particular kind of input-output linearization control, where the nonlinear transformation of the state is not computed by means of the model, but it is estimated online. Such an approach permits to cope with unmodelling dynamics, as well as uncertainty in the knowledge of the model parameters and exogenous disturbances. The effectiveness of the proposed ADRC control law has been verified both by numerical simulations and experimentally on a suitably developed test setup. Moreover, t…

rejection of disturbanceEngineering0209 industrial biotechnologyExtended state observer (ESO)rejection of disturbancesComputer scienceLinear induction motor02 engineering and technologyNonlinear controlInductorActive disturbance rejection controlIndustrial and Manufacturing Engineeringextended state observer020901 industrial engineering & automationSettore ING-INF/04 - AutomaticaControl theoryLinearizationstate feedback control0202 electrical engineering electronic engineering information engineeringlinear induction motor (LIM)Feedback linearizationElectrical and Electronic EngineeringTest setupbusiness.industry020208 electrical & electronic engineeringControl engineeringTransformation (function)Control and Systems EngineeringLinear induction motorA priori and a posterioriState (computer science)Robust controlbusinessNonlinear transformationInduction motor
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