Zahurin Samad

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This paper investigates the usage of Arduino microcontroller to control closed loop of Ionic Polymer Metal Composite (IPMC) actuator response designed for compact underwater application. We demonstrate control of single IPMC actuator by PID controller using MATLAB/Simulink Arduino Input Output (ArduinoIO) support package. Experimental results show that the(More)
The purpose of this paper was to find an effective method for measuring electromagnetic torque produced by a brushless DC motor with single-phase current sensing in real-time. A torque equation is derived from the theory of brushless DC motor. This equation is then validated experimentally with a motor dynamometer. A computer algorithm is also proposed to(More)
This paper proposed a novel design prototype of micro autonomous underwater vehicle (uAUV) which utilizes contractile water jet thruster instead of motor driven rotary blade propeller as the propulsion system to ensure it's stealthily characteristic. However, the nett thrust force could not be achieved if drag force have not been determined yet. In this(More)
In this paper three-dimensional FEM analysis and experimental flashless cold forging and temperature distribution of aluminum front and back hubs of Autonomous Underwater Vehicle (AUV) propeller is presented. The rigidplastic finite element simulation is performed using DEFORM F-3V6.0, to estimate the optimum load required for the flashless cold forging.(More)
Geometrical and dimensional accuracies are two major concerns in precision forging and they become more critical with increasing part complexity. In this study, the geometrical error of an autonomous underwater vehicle (AUV) propeller blade is quantified by comparing the blade and punch profiles. The nominal geometry of the blade is compared to the blade(More)
In this research, three methods for the detection of crack defects on integrated circuit (IC) packages are proposed. These methods use blob analysis technique in image processing stage, and use multi-layered perceptron (MLP) neural network to classify the IC package. This paper presents the various filters and operations employed in blob analysis. The(More)
Auto-focusing in imaging systems depends on the determination of the correct image focus criterion. In this research, the image captured by a liquid-filled diaphragm (LFD) fluid lens was analyzed to determine a focus measure criterion that can be used to establish the correct focus and thus quantify the image quality. The LFD lens was actuated using a(More)
This paper discussed the thrust characterization of the contractile water jet thruster using Ionic Polymer Metal Composite (IPMC) actuators. In this research, the effects of current input variation on the generated thrust at different nozzle size had been studied. By adjusting input power to the actuators, the optimization of the system which influenced by(More)
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