20.500.12556/DKUM-73979 Testiranje vibracijskih naprav na mikrofluidnem motorju diplomsko delo The Testing of Vibration Devices on a Microfluidic Motor V diplomskem delu obravnavamo vpliv vibracijske naprave na delovanje mikrofluidnih motorčkov. Mehanizem vibracijske naprave je mehanski ojačevalnik, ki ojača pomike piezoelektričnih aktuatorjev. Pri tem smo testirali vpliv oblike in lastnosti materiala mehanizma vibracijske naprave na hitrost vrtenja vode v lončku in pa vpliv sklopljenosti ter pritrditve mehanizmov na amplitudo pomikov, ki jih generira mehanizem vibracijske naprave. Prav tako smo raziskali popačenje pomikov zaradi ojačenj pomikov ob resonančnih frekvencah mehanizmov vibracijske naprave in pa zaradi popačenja krmilnega signala. Nadalje je predstavljen razvoj mikrofluidnega motorčka na osnovi lončka z osjo. Pri tem smo izdelali rotor motorčka iz sploščene četrtine kroglice stiropora, os iz bakrene žičke premera 200 μm ter ležaj iz optičnega vlakna notranjega premera 240 μm. Pri tem smo uspeli krmiliti hitrost vrtenja mikrofluidnega motorja s spreminjanjem amplitude napetosti krmilnega signala. Prav tako smo uspeli doseči spremembo smeri vrtenja mikrofluidnega motorja, vendar z majhno ponovljivostjo. In the diploma thesis, we deal with the influence of the vibration device on the microfluidic motor. The mechanism of a vibration device is a mechanical amplifier that reinforces the movements of piezoelectric actuators. We tested the influence of the shape and material of the vibration device on the rotation speed of the water in a pot and the effect of the coupling and the attachment of the mechanisms on the amplitude of the movements generated by the mechanism of the vibration device. Furthermore, we investigated the distortion of displacements that were the result of the resonance frequencies of the mechanisms of the vibration device and the distortion of the control signal. The development of a microfluidic motor in a pot with an axis is also presented. For this purpose, we constructed a rotor from a quarter of a flattened Styrofoam ball, an axis made of a copper wire with a diameter of 200 μm, and a bearing made of an optical fibre with an inner diameter of 240 μm. In doing so, we managed to control the rotational speed of the microfluidic motor by changing the amplitude of the voltage of the control signal. We also succeeded in changing the direction of rotation of the microfluidic motor, but with a low repeatability. testiranje vibracijska naprava mehanski ojačevalnik piezoelektrični aktuator mikrofluidni motor testing vibration devices mechanical amplifier piezoelectric actuator microfluidic motor true true false [M. Malok] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-07-11 13:05:06 2019-09-03 11:03:59 2022-08-09 07:56:04 2020-03-01 03:09:31 2019 0 Maribor 0 Maribor XIV, 62 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 681.587.3.08(043.2) 23027734 URN:SI:UM:DK:NDRST5GZ UN_Malok_Matjaz_2019.pdf UN_Malok_Matjaz_2019.pdf 1 6E2E7D23FEBF4B3F08CC5FA5804FB6F6 71b0683e7acbf9d1e7d9651e9b57da8500a8eb9cdfea201a8aa2fb611e89c69e d0761f32-7c10-11eb-bb7a-00155d0001ca 20.500.12556/dkum/d14b4375-2790-41c8-a82d-83bad6fba2a3 https://dk.um.si/Dokument.php?lang=slv&id=135704 Fakulteta za strojništvo 0 0 0