Transactions of Materials and Heat Treatment

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ClassificationCode：TP18;TP273

year,vol(issue):pagenumber：2024,49(2):136-145

Abstract：

In order to solve the looper height control problem in the hot strip rolling process, a sparrow search algorithm （SSA） with an elimination mechanism and an adaptive parameter tuning method of integral time absolute error (ITAE) performance index were proposed, which introduced 2N segment Tent chaotic mapping and last elimination mechanism to enhance the global search capability and local convergence accuracy of SSA, and the traditional ITAE performance indexes were improved by calculating the error change rate into an adaptive function to comply with the requirements of fractional order PID in different stages. The method was compared with other tuning methods and applied on the simulation test of looper height control. The system response curve and other performance indexes such as rise time, adjustment time, overshoot and stability error were analyzed, proving that the improved control method could make the controlled objects obtain good dynamic characteristics.

Funds：

河北省自然科学基金资助项目（F2018209201）

周建新（1977-），男，博士，副教授

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