By Jacek Kabziński
This contributed quantity is written via key experts operating in multidisciplinary fields in electric engineering, linking keep an eye on conception, energy electronics, man made neural networks, embedded controllers and sign processing. The authors of every bankruptcy record the cutting-edge of some of the subject matters addressed and current result of their very own examine, laboratory experiments and profitable functions. The awarded ideas be aware of 3 major parts of interest:
· movement keep an eye on in complicated electromechanical structures, together with sensorless control;
· fault analysis and fault tolerant keep an eye on of electrical drives;
· new regulate algorithms for strength electronics converters.
The chapters and the entire e-book own robust monograph attributes. very important useful and theoretical difficulties are deeply and properly provided at the heritage of an exhaustive state-of the paintings assessment. Many effects are thoroughly new and have been by no means released ahead of. recognized regulate equipment like box orientated regulate (FOC) or direct torque regulate (DTC) are referred as a place to begin for differences or are used for comparability. between a number of keep watch over theories used to resolve specific difficulties are: nonlinear keep an eye on, powerful keep an eye on, adaptive regulate, Lyapunov innovations, observer layout, version predictive keep watch over, neural keep an eye on, sliding mode keep watch over, sign filtration and processing, fault analysis, and fault tolerant control.
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Additional resources for Advanced Control of Electrical Drives and Power Electronic Converters
2) is transferred into: l d v ¼ i À ATo nðx; vÞ; dt ð5Þ where: l¼ m ; u Ao ¼ 1 A: u ð6Þ The control objective is that the motor position has to follow a smooth, bounded reference xd ðtÞ: 30 J. Kabziński et al. jxd ðtÞj xmax : ð7Þ It is assumed that the derivatives of the reference are bounded as well. It is required that the tracking error denoted by: ex ¼ xd À x ð8Þ is constrained for any t by a pre-deﬁned, rigorous inequality: jex ðtÞj\Dex ; ð9Þ for any initial conditions that assure jex ð0Þj\Dex .
The case where the mutual inductance is calculated on the basis of estimated variables requires a mention. The main flux or magnetizing current vector is very convenient for calculating the main inductance in such a case. The other method is based on using the virtual flux vector with the same direction as the main flux and arbitrary vectors may be selected as state variables for the machine. The rotor angular velocity may be estimated in the ﬁrst plane but situations can arise where the rotor flux is equal to zero in this plane.
It is assumed that the actuator works against the load described by: Fo ðx; vÞ ¼ Av2 signðvÞ þ Bjvj sinð2pxÞ ½N: ð61Þ with unknown coefﬁcients A and B, hence, according to (21): 1 ½m; A; B u Â Ã nT1 ¼ v_ d ; v2 signðvÞ; jvj sinð2pxÞ : AT1 ¼ ð62Þ If it is assumed that none of the motor or load parameters are known, the initial values of adaptive parameters are selected as: b T ¼ 1 ½0:5 m; 0; 0; A 1 u b T ¼ 1 ½m; A; B ¼ 1 ½8; 10; 6. while the real values are A 1 u 39 ð63Þ Adaptive Position Tracking with Hard Constraints … 41 Fig.
Advanced Control of Electrical Drives and Power Electronic Converters by Jacek Kabziński