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This paper deals with the speed control of asymmetrical dual three-phase induction machines by using an inner loop of Predictive Current Control based on the Model (MBPC). The MBPC is obtained from the mathematical model of the drive, using a state-space representation, where the two states variables are the stator and rotor currents, respectively. In electrical drive applications, the rotor current...
The Kalman Filter (KF) is a very powerful tool when it comes to controlling noisy systems, because it provides optimal filtering of the noise in measurement and inside the system if the covariance matrices of these noises are known. This paper addresses the study of the KF application to improve the estimation of states through an optimal estimation of the rotor current and proposes a speed control...
The structural and conformational requirements of a carrier responsible for the saturable component of the uptake of the plant hormone (+)-abscisic acid in barley suspension culture cells have been probed through the use of a defined series of optically pure ABA analogues. Two analogues showed a tenfold increase over (+)-ABA in inhibiting the uptake of radiolabelled (+)-ABA. Results from different...
Abscisic acid (ABA) was functionalized at the 3 -position by reaction of its α-2 ,3 -epoxide with 1,4-butanedithiol to afford the corresponding derivative having a six-atom linker arm containing a terminal sulphhydryl group. This derivative was coupled with epoxy activated Sepharose 6B affording a gel containing ca 1.4 mg of (+)-ABA ml -1 . This gel was shown to bind specifically...
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