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Improving Fuzzy Logic System (FLS) design is of main interest. Linguistic rules of a FLS can be converted into Fuzzy Basis Functions (FBFs). Moreover, numerical rules and their FBFs can be extracted from numerical training data. This combination of both linguistic and numerical information simultaneously makes the FBFs very useful. Since a specific FLS can be expressed as a linear combination of FBFs,...
In this paper, a model-based robust observer is designed for the estimation of oxidizer mass flow rate of fuel cell system (FCS). The mass flow rates of reactant gases play a pivotal role in the reliable and efficient operation of FCS. Their precise and exact estimation is necessary and important for control and diagnostics of FCS. In the particular sense of inlet manifold of fuel cell system, appropriate...
Three tank system can be adapted to emulate many systems in process and aerospace industry. This paper presents synthesis of LMI based H∞ controller for uncertain three tank system. Uncertainties in parameters can arise due to imperfect knowledge of physical parametric values or from variations of these parameters during operation. A linearized affine dynamical model is derived with uncertain flow...
A new sliding surface has been proposed to handle cross-coupling affects in a twin rotor system. This cross-coupling leads to degraded performance during precise maneuvering and it can be suppressed implicitly either by declaring it as disturbance or explicitly by introducing decoupling techniques. Sliding mode control offers robustness against cross-coupling as well as performance along with the...
Robust Control of Stewart Platform has been successfully demonstrated by various authors [8-12]. The work done so far is based on the assumption that the bounds on uncertainty are known and the chosen reachability gains are greater than these bounds. This assumption can only be justified if those bounds could be quantified, which is not the case in the existing approaches. The problem gets severe...
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