Online Optimal Controller Design using Evolutionary Algorithm with Convergence Properties

سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 64

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شناسه ملی سند علمی:

JR_MJEE-8-2_002

تاریخ نمایه سازی: 13 شهریور 1402

چکیده مقاله:

Many real-world applications require minimization of a cost function. This function is the criterion that figures out optimality. In control engineering, this criterion is used in the design of optimal controllers. Cost function optimization has difficulties including calculating gradient function and lack of information about the system and the control loop. In this article, gradient memetic evolutionary programming is proposed for minimization of non-convex cost functions that have been defined in control engineering for the first time. Moreover, stability and convergence of the proposed algorithm are proved. Besides, it is modified to be used in online optimization. To achieve this, the sign of the gradient function is utilized. For calculating the sign of gradient, there is no need to know the cost function shape. The gradient function is estimated by the algorithm. The proposed algorithm is used to design a PI controller for nonlinear benchmark system CSTR (Continuous Stirred Tank Reactor) by online and off-line approaches.

کلیدواژه ها:

Nonlinear Optimal Controller ، en ، GMEP (Gradient Memetic Evolutionary Programming) ، Sign of Gradient Function ، Online Optimization ، Nonlinear Benchmark CSTR

نویسندگان

Yousef Alipouri

Departmen of Electrical Engineering, University of Science and Technology, Tehran, Iran

Javad Poshtan

Departmen of Electrical Engineering, University of Science and Technology, Tehran, Iran

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