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Robust control synthesis using coefficient diagram method and µ-analysis: an aerospace example

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Abstract

This paper develops a structured controller synthesis method which satisfies robust stability and robust performance. In the proposed method (µ-CDM), coefficient diagram method (CDM) is employed to synthesize a structured controller and µ-analysis is used to evaluate the robustness of the controller. A supervisory particle swarm optimization utilizes the CDM and µ-analysis in an iterative manner in order to reach an optimal robustness bound. To evaluate the performance of the proposed method, it has been used to synthesize a robust autopilot for an aerospace system. Numerical simulations confirm the feasibility of µ-CDM and show the acceptable closed-loop performance in presence of various model uncertainties. The performance of the proposed controller is compared with that of a conventional CDM controller and a D–K iterations controller.

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Authors and Affiliations

  1. School of Mechanical Engineering, Shiraz University, Shiraz, Iran

    Seid Farhad Abtahi & Ehsan Azadi Yazdi

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  1. Seid Farhad Abtahi
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  2. Ehsan Azadi Yazdi
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Correspondence to Ehsan Azadi Yazdi.

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Abtahi, S.F., Azadi Yazdi, E. Robust control synthesis using coefficient diagram method and µ-analysis: an aerospace example. Int. J. Dynam. Control 7, 595–606 (2019). https://doi.org/10.1007/s40435-018-0462-7

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  • DOI: https://doi.org/10.1007/s40435-018-0462-7

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