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Title
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Multi-objective fault-tolerant fixed-order/PID control of multivariable discrete-time linear systems with unmeasured disturbances
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Type
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JournalPaper
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Keywords
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Fixed-order controller; Bilinear matrix inequality (BMI); PID controller; Fault-tolerant control
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Abstract
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In this paper, a multi-objective fault-tolerant fixed-order output feedback controller design technique is proposed for multivariable discrete-time linear systems with unmeasured disturbances. Initially, a multi-objective fixed-order controller is designed for the system by transforming the problem of tuning the parameters of the controller into a static output feedback problem and solving a mixed H2∕H∞ optimization problem with bilinear matrix inequalities. Subsequently, the fixed-order controller is used to construct the closed-loop system and an active fault-tolerant control scheme is applied using the input/output data collected from the controlled system. Motivated by its popularity in industry, the proposed method is also used to tune the parameters of proportional-integral-derivative (PID) controllers as a special case of structured controllers with the fixed order. Two numerical simulations are provided to demonstrate the design procedure and the flexibility of the proposed technique.
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Researchers
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Mohammad Javad Khosrowjerdi (Third Researcher), Yazdan Batmani (Second Researcher), Zahra Karimi (First Researcher)
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