Abstract: This paper deals with the control of level in a conical tank which has nonlinear behaviour and the real time system design are analysed. The implementation in SIMULINK is explained. In many industries, control of non linear process is a challenging task and hence controlling the level in a Conical tank is a complex issue. For each stable operating point, a First Order Process model has been identified using process reaction curve method and the Control is done. The appropriate method is identified by comparing various controllers.

Keywords: Conical tank, Non-linear process.