Fractional IMC design for fractional order gas turbine model

The gas turbine is an extremely important component for the automotive and aviation industry. It works by converting the energy obtained by fuel combustion into some form of mechanical power. Therefore, controlling the input fuel going to the turbine is an important aspect of the gas turbine system. Therefore, an efficient controller design is required which can control the rate of the fuel being fed to the turbine. It is observed that the Internal Model Control (EVIC) based controller design scheme is quite popular due to its robust performance and mathematical simplicity. This type of controllers are very successfully being used in integer order systems. However, it is seen that the system behavior represented by the fractional order mathematical model is more close to the real life dynamics, especially for large complicated systems. Therefore, in this paper a fractional order model of the gas turbine plant is considered and a fractional order EVIC controller is designed. It is observed that the controller designed using the proposed technique gives better results than the other fractional EVIC controllers available in the literature. The performance of the proposed controller is compared to the existing fractional order EVIC techniques using the integral error criterion.