系统仿真学报 ›› 2016, Vol. 28 ›› Issue (5): 1045-1053.

• 仿真建模理论与方法 • 上一篇    下一篇

求解分数阶混沌系统参数估计问题的和声引力搜索算法

黄宇, 王佳荣, 梁伟平   

  1. 华北电力大学 河北省发电过程仿真与优化控制工程技术研究中心,保定 071003
  • 收稿日期:2014-12-30 修回日期:2015-04-23 发布日期:2020-07-03
  • 作者简介:黄宇(1982-),男,江苏沭阳,博士,讲师,研究方向为热工系统辨识与控制;王佳荣(1988-),女,河北保定,硕士生,研究方向为热工控制系统结构及参数优化。
  • 基金资助:
    中央高校基本科研业务费专项资金(2015MS66)

Harmony Gravitational Search Algorithm for Solving the Problem of Parameter Estimation for Fractional-order Chaotic Systems

Huang Yu, Wang Jiarong, Liang Weiping   

  1. Hebei Engineering Research Center of Simulation Optimized Control for Power Generation, North China Electric Power University, Baoding 071003, China
  • Received:2014-12-30 Revised:2015-04-23 Published:2020-07-03

摘要: 针对分数阶混沌系统的参数估计问题,提出了一种和声引力搜索算法。通过和声搜索算法中的记忆选择与概率搜索对引力搜索算法更新后的粒子进行再创作与调整。为解决粒子接近最优解时出现速度变化过快的问题,提出将和声搜索算法中的局部调整概率值设置为随算法迭代次数增加而非线性减小。采用标准测试函数对该算法进行了测试,测试结果表明本文算法具有良好的稳定性和全局搜索能力。将该算法应用于分数阶Rӧssler混沌系统与分数阶Lorenz混沌系统的参数估计,计算结果表明了本算法的有效性和鲁棒性。

关键词: 分数阶混沌系统, 参数估计, 引力搜索算法, 和声搜索

Abstract: Aiming at parameter estimation for fractional-order chaotic systems, a harmony gravitational search algorithm was proposed. The particles, which were updated by gravitational search algorithm, were recreated and searched through memory selections and probability search in harmony search algorithm. At the same times, in order to solve the problem that the speed changed too fast when the particles closed to the optimal solution, the partial adjustment probability was set to non-linearly decrease with the adsorption capacity increasing. Standard test functions were used to test the algorithm, and the test results show that the algorithm has good stability and global search capability. At last, the harmony gravitational search algorithm is applied in the parameter estimation for fractional-order Rӧssler system and fractional-order Lorenz system, and the estimation results show that the algorithm is effective and robust.

Key words: fractional-order chaotic systems, parameter estimation, gravitational search algorithm, harmony search

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