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Fractional Order Controller Designing with Firefly Algorithm and Parameter Optimization for Hydroturbine Governing System

机译：水轮机调节系统的萤火虫分数阶控制器设计和参数优化

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摘要

A fractional order PID (FOPID) controller, which is suitable for control system designing for being insensitive to the variation in system parameter, is proposed for hydroturbine governing system in the paper. The simultaneous optimization for several parameters of controller, that is K-i, K-d, K-p, lambda, and mu, is done by a recently developed metaheuristic nature-inspired algorithm, namely, the firefly algorithm (FA), for the first time, where the selecting, moving, attractiveness behavior between fireflies and updating of brightness, and decision range are studied in detail to simulate the optimization process. Investigation clearly reveals the advantages of the FOPID controller over the integer controllers in terms of reduced oscillations and settling time. The present work also explores the superiority of FA based optimization technique in finding optimal parameters of the controller. Further, convergence characteristics of the FA are compared with optimum integer order PID (IOPID) controller to justify its efficiency. What is more, analysis confirms the robustness of FOPID controller under isolated load operation conditions.
机译：针对水轮机调节系统，提出了一种分数阶PID（FOPID）控制器，该控制器适合于对系统参数的变化不敏感的控制系统设计。控制器的几个参数（即Ki，Kd，Kp，lambda和mu）的同时优化是通过最近开发的启发式自然启发算法首次实现的，即萤火虫算法（FA），其中详细研究了萤火虫之间的选择，移动，吸引行为和亮度更新，以及决策范围，以模拟优化过程。研究清楚地表明，就减少振荡和建立时间而言，FOPID控制器优于整数控制器的优势。本工作还探索了基于FA的优化技术在寻找控制器最佳参数方面的优势。此外，将FA的收敛特性与最佳整数阶PID（IOPID）控制器进行比较，以证明其效率合理。此外，分析证实了FOPID控制器在隔离负载运行条件下的鲁棒性。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第18期|825608.1-825608.11|共11页
  • 作者

    Li Junyi; Chen Qijuan;

  • 作者单位

    Wuhan Univ, Power & Mech Engn, Wuhan 430072, Hubei, Peoples R China.;

    Wuhan Univ, Power & Mech Engn, Wuhan 430072, Hubei, Peoples R China.;

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