Mohd Ruddin Ab Ghani

Aedes aegypti mosquitoes are a small slender fly insect that spreads the arbovirus from flavivirus vector through its sucking blood. An early detection of this species is very important because once these species turn into adult mosquitoes a population control becomes more complicated. Things become worse when difficult access places like water storage tank becomes one of the breeding favorite places for Aedes aegypti mosquitoes. Therefore, there is a need to help the field operator during the routine inspection for an automated identification and detection of Aedes aegypti larvae, especially at difficult access places. This paper reviews different methodologies that have been used by various researchers in identifying and counting Aedes aegypti. The objective of the review was to analyze the techniques and methods in identifying and counting the Aedes Aegypti larvae of various fields of study from 2008 and above by taking account their performance and accuracy. From the review, thresholding method was the most widely used with high accuracy in image segmentation followed by hidden Markov model, histogram correction and morphology operation region growing.

This paper introduces a new control mechanism for the 6/4 switched Reluctance Motor (SRM) which is the Field Oriented Control (FOC). The switched reluctance motor usually controlled with power converters, inverters or other power electronics circuit. This paper aims to build a 6/4 SRM under the control of FOC driver circuit and compare the results obtained with other driver circuit to show the contribution of FOC in minimization the ripple in the output torque of the SRM motor. All the simulation results will be presented and modeled using MATLAB/Simulink software to verify the theoretical analysis.

Switched reluctance motor is an electric motor which possesses advantageous features that qualifies it to be used in electric vehicle and aerospace application. There are various drivers have been previously and actively being used to drive the switched reluctance motor. In this paper, the switched reluctance motor is controlled utilizing vector control using fuzzy logic controller and ANN controller in order to minimize the torque ripple by regulating torque within specified hysteresis band. Both fuzzy logic and ANN Control of Switched Reluctance Motor fed through an asymmetrical converter. Both of controllers are simulated in MATLAB/Simulink for fixed SRM parameters. According to the obtained results the switched reluctance motor is performing very well when driven by fuzzy logic controller in comparison to the ANN controller.

Dish-Stirling concentrating solar power systems is an efficient and reliable source of renewable energy. In this paper, the proposed model showed the idea of Parabolic Dish (PD) systems with control system model which vary the amount of working gas in the Stirling engine. The control systems were designed using Matlab /Simulink 2012a. Based on the developed linearized model, an improved temperature controller with transient droop characteristic and Mean Pressure Control (MPC) has been proposed. This temperature controller was effective in reducing the temperature and improving performance of the PD system. The overall performance of the system improved more than 78% in output power and energy. Besides, the system improved in term of sensitivity compared with the PD system without compensated. In addition, thermal losses decreased to 97.6% which is directly have significant improvement for the output efficiency to the system. The analysis shows that the PD system is feasible in term of technical but not economically feasible in the Malaysia environment.

Particle Swarm Optimization Performance: Comparison of Dynamic Economic Dispatch with Dantzig-Wolfe Decomposition

Nowadays, even though many researchers continue to investigate and study about Parabolic Dish based on Concentration Solar Power (CSP), the findings are not conclusive and do not provide accurate evidence and proof on the potential of CSP development in Malaysia. The missing link in the Parabolic Dish (PD) Stirling Engine system modelled is the control systems, which vary the amount of working gas in the Stirling engine. The temperature of the heater in PD system which has been modelled is overheated and causes damage to the heater material, low output efficiency, high thermal losses and effect to the lifespan of the PD system. Therefore, the primary aim of this paper was to design a control system to maximize output efficiency during a normal operation by maintaining the heater/absorber temperature at the highest safe operating point and preventing excessive range of threshold to prevent damage to the heater material.

A Review of Parabolic Dish-Stirling Engine System Based on Concentrating Solar Power

The Influence of Concentrator Size, Reflective Material and Solar Irradiance on the Parabolic Dish Heat Transfer