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Download Fault-tolerant control systems: design and practical by Hassan Noura, Didier Theilliol, Jean-Christophe Ponsart, PDF

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By Hassan Noura, Didier Theilliol, Jean-Christophe Ponsart, Abbas Chamseddine

Fault-tolerant regulate Systems studies the improvement of fault prognosis and fault-tolerant regulate (FTC) equipment with their program to genuine crops. After an creation to fault prognosis and FTC, a bankruptcy on actuators and sensors in structures with various levels of nonlinearity ends up in 3 chapters within which the layout of FTC platforms is given thorough insurance for genuine applications:

• a winding computer typifying a subsystem in a variety of sheet and movie processes;

• a hydraulic three-tank process consultant of these used greatly in chemical vegetation; and

• an energetic suspension procedure demonstrating program in complete large-scale structures via splitting into subsystems.

Actuator and sensor faults are accommodated in the control-law layout and the combination of fault prognosis versions within the FTC platforms defined. remark is given at the contemporary effects provided. severe disasters – the lack of method observability from overall lack of a sensor and of controllability from whole lack of an actuator – are thought of. Linearized structures round an working aspect and nonlinear platforms are mentioned and illustrated. an entire simulation platform of the three-tank process, in closed-loop, without or with actuator and sensor faults, is equipped for using the reader through obtain from

With its emphasis on actual program, Fault-tolerant keep watch over Systems makes a big contribution to the literature on FTC and should be of vital information to practising keep an eye on engineers with difficulties of this nature to unravel. The ebook may also be of use to educational researchers and graduate scholars attracted to FTC, bringing to their awareness the necessity to adapt their tools for implementation and suggesting ways that this is done.

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32), K = After defining the augmented matrices A¯ and B K1 K2 is computed using the LQ technique such that the following cost function is minimized: J= 1 2 ∞ X T (k)QX(k) + uT (k)Ru(k) . 1I3 . Using MATLAB , the feedback gain matrix for the augmented system can be calculated as follows. 3 Linear Case 51 A bar = [A zeros ( 3 ) ; −Ts∗C eye ( 3 ) ] ; B bar = [ B ; zeros ( 3 ) ] ; Q = 0 . 0 5 ∗ eye ( 6 ) ; R = 0 . 1 ∗ eye ( 3 ) ; [K, s , e ] = d l q r ( A bar , B bar ,Q,R ) ; K1 = K ( : , 1 : 3 ) ; K2 = K ( : , 4 : 6 ) ; The application of this control law to the winding machine for a given reference vector close to the operating point leads to the following results illustrated by Figs.

84) presented in Chap. 25) where F = B(R). For the winding machine, the fault detectability indexes are equal to one for all faults and regardless of the value of radius R. 25). In order to facilitate the parametrization of the FDI module, a bank of detection filters is considered. Each filter is dedicated to detect and to isolate a unique actuator fault. 26) where Fi is the ith column of matrix B(R). Let us define the matrices for each detection filter in the case of the considered application. 84) are defined as 80 3 Application to a Winding Machine ⎧ ωi = ωi (R) = A(R)Fi ⎪ ⎪ ⎨ + Ξi = Ξi (R) = (CFi ) .

16) is obtained after considering 240 operating zones (as represented in Fig. 32), where each operating zone can be modeled with an LTI model. 1 s. The second step, dedicated to the open-loop identification of each operating zone, following the same methodology as presented in the linear case, allows to obtain 240 analytical models using a classical ARX structure [90,99]. 15 (the system inputs and outputs are given in the interval −1 +1 corresponding to −10 V +10 V ). The measured outputs vary with the radius R of the strip roll over the whole operating range as shown in Fig.

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