Browsing by Author "İzmir, Tolga Tugay"

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    Master Thesis
    Kaotik mutfak tipi bir mikserin gerçeklenmesi ve performans değerlendirmesi
    (2019) İzmir, Tolga Tugay; Güzeliş, Cüneyt
    In this thesis, chaotic systems, which work more efficiently than conventional methods, are considered, and it is aimed to develop a kitchen type chaotic mixer prototype and to perform efficiency analysis in cake dough mixture application. Prototype mixer has been realized with hardware and software changes to be made on a commercial kitchen type mixer, which works originally with conventional method. For the chaotic operation of the mixer, a new control card is designed. Motor speed is controlled based on a micro controller, which transmits the speed signal to the power card driving the mixer motor. Chaotic signal is generated by a simple chaotic system, namely the logistic map, implemented in microcontroller. The generated chaotic signal is fed to drive the mixer motor in order to chaotify motor speed in a feedforward control scheme. By computing the Lyapunov exponent of the motor speed signal, it is observed that such a feedforward chaotification scheme is sufficient to achieve chaotic mixer speed. A tablet with Android operating system is provided for operating the mixer with the chaotic or conventional method, adjusting the engine speed, setting the test run time, entering the Proportional Integral Derivative controller parameter values, and checking the voltage-current information. A SCADA application has been written that can be used on all devices with Android operating system. Wireless Bluetooth communication has been chosen for SCADA software and control board communication to eliminate practicality and cable clutter. The thesis demonstrates the efficiency of chaotic mixing in food engineering and, in particular, cake dough mixing. The experimental studies of the thesis include rheological, physical and sensory analyses of the cake product obtained by chaotic mixing. Consistency check is done for overall qualitative properties. The analyses shows that, as compared to the conventional one, namely the constant speed mixing, chaotic mixing provides the cake products to possess almost the same characteristics obtained with almost half of the energy and time consumption.