Design and Implementation of Non Linear System Using Gain Scheduled PI Controller

AbstractThis paper presents modeling and control of highly non linear system using gain scheduled PI controller. Interacting spherical two tank system (ISTTS) is considered as non linear system, where the aim is to control the liquid level of tank. Control of liquid level in interacting spherical two tank system is highly challenging due to variation in the area of cross section of ISTTS with change in shape. Transfer function for ISTTS is derived and with the relationship between ISTTS parameters and PI parameters, gain scheduled PI controller is implemented. Performance is highlighted by calculating performance indice