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Modelling and control of gas turbines (GTs) have always been a controversial issue because of the complex dynamics of these kinds of equipment. Considerable research activities have been carried out so far in this field in order to disclose the secrets behind the nonlinear behaviour of these systems. Although the results of the research in this area have been satisfactory so far, it seems that there...
An important target for car manufacturers when developing new cars is to reduce fuel consumption. One approach to this problem is to use a downsized turbocharged engine. To fully utilize the benefits of the new hardware introduced, good control systems are needed. This paper presents a nonlinear controller for controlling the exhaust pressure in a SI engine equipped with VGT. A mapping from the states,...
This paper proposes an active disturbance rejection controller (ADRC) to control a boiler-turbine unit as a multivariable, nonlinear and strongly coupled system. Main part of the ADRC is an extended state observer (ESO) which is capable of identifying unknown dynamics and also nonlinear part of the system as a disturbance term. By rejecting the defined disturbance, the system can be simplified and...
Electric power companies pay attention to the load following capability and economical operation of a thermal power plant. However, conventional PID controllers embedded in DCSs cannot always provide the optimum solution for such subjects. To cope with these problems, we discuss a model predictive control (MPC) system to tune PID controller parameters. Prior to study of the advanced control system,...
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