The Possibilities For Design And Implementation Of Multivariable Control For a Level Control In a Double Tank Process

The article is focused on a control design of multivariable process and its subsequent implementation of control possibilities for real laboratory tasks. For this purpose, it seems appropriate to use a B&R Target for Simulink. This tool allows you to convert Simulink models into an automatically generated code in C/C++ and its direct implementation on PLCs. According to the producer, this way of a design and an implementation should be time-efficient and it is designed to allow an easy implementation for sophisticated simulation models and control structures. The article validates the use of this tool on the designed regulatory models for the decentralized control of the multivariable process. First, we used a simple control method, the action of loop-interactions neglecting, based on the division of two loops with SISO PID controllers. Other control methods are slightly more advanced and are based on a regulatory control strategy known as Decoupling. These methods consist of the design of appropriate decouplers eliminate loop-interactions such as Ideal decoupling, Simplified decoupling etc. All designed controllers were successfully tested on the physical model - Level Control in Tank double Process, which was controlled by a PLC and MATLAB Real Time Toolbox. In conclusion, we have evaluated the use of the B&R Target tool for Simulink and we compared the regulation using this tool with regulation using MATLAB Real Time Toolbox.