Download Analysis and synthesis of fault-tolerant control systems by Magdi S. Mahmoud PDF

By Magdi S. Mahmoud

In fresh years, regulate platforms became extra refined so that it will meet elevated functionality and security requisites for contemporary technological platforms. Engineers have gotten extra conscious that traditional suggestions keep an eye on layout for a fancy method may end up in unsatisfactory functionality, or maybe instability, within the occasion of malfunctions in actuators, sensors or different procedure elements. with the intention to stay away from such weaknesses, new methods to manage process layout have emerged which could tolerate part malfunctions whereas protecting appropriate balance and function. a majority of these keep an eye on platforms are frequently referred to as fault-tolerant keep watch over platforms (FTCS). extra accurately, FTCS are keep an eye on platforms which own the facility to deal with part failure automatically.

Analysis and Synthesis of Fault-Tolerant keep an eye on Systems comprehensively covers the research and synthesis equipment of fault tolerant keep an eye on structures. It unifies the equipment for constructing controllers and filters for a large category of dynamical structures and studies at the fresh technical advances in layout methodologies. MATLAB® is used in the course of the ebook, to illustrate equipment of research and design.

Key features:

• offers complex theoretical tools and ordinary functional applications
• presents entry to a spectrum of keep watch over layout equipment utilized to business systems
• contains case stories and illustrative examples
• comprises end-of-chapter problems

Analysis and Synthesis of Fault-Tolerant keep watch over Systems is a complete reference for researchers and practitioners operating during this sector, and is additionally a beneficial resource of knowledge for graduates and senior undergraduates up to speed, mechanical, aerospace, electric and mechatronics engineering departments.

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1 General nomenclature Symbol Function x¯ Px 2L + 1 QTS UB UT α κ β λ L Mean Covariance Sigma vectors in unscented Kalman filter (UKF) Quadruple tank system Utility boiler Unscented transformation Spread of the sigma points around x¯ Secondary scaling parameter Incorporate prior knowledge of the distribution of x Composite scaling parameter Dimension of the augmented state Process-noise covariance Measurement-noise covariance Weights Stationary process with identity state transition matrix Noise Desired output Nonlinear observation Constant diagonal matrix Forgetting factor v n Wi wk rk dk wk e λRL S has likely occurred [12].

This results in n residuals, rn , summed with hypothesis testing probabilities, which gives the fault (or drift) detection of the system. These drift detections and output of the unscented filters are added to give us the parameter estimation of the system, thus resulting in efficient updating of observation noise and covariance. 29) n p q is the state, u(k) is the control input, y(k) are the measurement outwhere x(k) nd nf and f(k) ∈ are the disturbance and fault vectors, respectively. put vectors, and d(k) ∈ Here, B f (k) ∈ n×n f and D f (k) ∈ q×n f are the component and uninterested fault distribution matrices, respectively, while Bd (k) ∈ n×n d , and Dd (k) ∈ q×n d are the corresponding disturbance distribution matrices.

Unscented filters are employed in n states of the dynamic system. The residual compares the output of the unscented filters and the output of n states of a healthy model of the plant that contains no faults. This results in n residuals, rn , summed with hypothesis testing probabilities, which gives the fault (or drift) detection of the system. These drift detections and output of the unscented filters are added to give us the parameter estimation of the system, thus resulting in efficient updating of observation noise and covariance.

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