This project is about analyzing the effect of vibration towards the keropok keping drying machine. The structure frame of the drying machine has been analyzed by conducting modal analysis using ANSYS software. The results of this project consist of the mode shape (pattern of vibration) with the respective natural frequency and the total deformation that occur at the component. The structure of the component is being analyzed whether they are going to resonate or not by comparing the natural frequency obtained from the analysis results and the operating speed of the drying machine. This study will benefit the small and medium-sized enterprise (SMEs), whom the machine was originally developed for, by giving a better performance and low maintenance cost thus minimize the production cost of keropok keping.
Abstract. This research is focused on the development of a control system for the keropok keping drying machine by using programmable logic controller (PLC) as the controller. The control panel and human machine interface (HMI) were developed for the machine. Experimental study was conducted to validate the HMI speed data by the control panel speed display. The evaluation of the duty cycle (%) and current flow (amp) effect to the motor and fan speed were also conducted. The results showed that around 1 -30 % and 1 -3 % differences of the speed readings were recorded by the HMI for the motor and fan respectively. The percentage difference needs to be controlled as small as possible to ensure the HMI speed readings are more accurate. The linearity of the current flow curve to all duty cycle can be observed. The flow (amp) increases when the speed of dryer motor and fan increases. The development of the control system is expected to improve the operation of the keropok keping drying machine.
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