Peker, FuatKaya, Ibrahim2025-02-222025-02-2220240020-77211464-5319https://doi.org/10.1080/00207721.2024.2376729https://hdl.handle.net/11468/29733A common type of nonlinear system in the field of process industry is asymmetrical heating and cooling processes. These systems have two operating modes, heating and cooling, each with a particular dynamic feature. This study deals with identifying and controlling such processes. The relay feedback identification method based on the state-space approach, which results in exact estimates, is used in the identification procedure to achieve two first-order plus dead time (FOPDT) process models. Following process identification, two sets of PI-PD controller parameters are acquired in line with the user-defined gain and phase margin specifications, and the system is controlled using a gain-scheduled PI-PD control method. Some simulation examples are provided to demonstrate the use and profitability of the suggested identification and control approaches. Comparisons with a similar study are provided for both identification and control approaches to clearly demonstrate the benefits of the suggested procedures.eninfo:eu-repo/semantics/closedAccessAsymmetrical heating and cooling processesRelay feedback identificationProportional-Integral Proportional-Derivative (PI-PD) controllerArticle551634853513WOS:0012702778000012-s2.0-8519837998410.1080/00207721.2024.2376729Q1Q1