Design And Simulation Of A High Thrust Linear Oscillatory Actuator

An actuator is widely used in many applications either in automation, transportation, productions, robotics, logistics, etc. There are many types of actuator available in the market. An actuator is a device that converts energy into limited mechanical motion. The form of energy could be electric, hydraulic or pneumatic. Electric actuator is much superior compare to other energy form. It gives efficiency, controllability, cost and environmental safety. This thesis is a study on designing a linear oscillatory actuator based on electromagnetic theory. The aim of this study is to develop a linear oscillatory actuator for mechanical cutter with high thrust. Linear oscillatory actuator (LOA) is a type of linear actuator whereby its motion is in single axis and moves continuously. In this research, the design starts from magnetic analysis using Finite Element Method (FEM). This software can simulate the flux density, flux flow, thrust, cogging force, normal force on the element and material in the motor including electromagnet element. The LOA was designed to have a view of its structure before simulate the design by Microcal Origin software. Then, simulation was done to obtain the best thrust, cogging force and normal force value. Few modifications on the structure are done during this simulation to identify the highest thrust, lowest cogging force and normal force. Simulations of all designed modelling are compared. Future recommendation has been provided to help other researcher for further development of this LOA

Tuning Factor the Single Input Fuzzy Logic Controller to Improve the Performances of Depth Control for Underwater Remotely Operated Vehicle

This paper investigates the factor of tuning variable parameter for Single Input Fuzzy Logic Controller (SIFLC) to improve the performances of depth control for the underwater Remotely Operated Vehicle (ROV). This study and investigates will focus on the number of rules in SIFLC, lookup table, slope of a linear equation, and also model reference to give optimum performances of depth control without overshoot in system response and faster rise time and settling time. The variable parameter for SIFLC is tuned by Particle Swarm Optimization (PSO) algorithm. The investigation focused on the number of rules will be reduced, SIFLC parameter reduced, represented lookup table as a linear control surface method to represent the inference engine of FLC. The investigation on model reference also covered in this paper. The current of model reference will give the best system response for depth control. The slope of linear equation either in positive and negative values and come up from conventional FLC then will simplify into SIFLC. The results obtained the number of rules, the slope of linear equations and model reference will be affecting the results of system performances

Individual student key performance using mobile web apps based on knowledge profile and cumulative grade point average

This study investigated the performance of individual students toward the knowledge profile and cumulative grade point average or known as CGPA. The proposal of this paper involves two major components. The first component is investigating the individual student performance based on the knowledge profile and CGPA. The performance of students from cohort 2017 for the program Bachelor of Electrical Engineering (BEKG) courses in the Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka (UTeM) was used as the dataset. The case study separates into various groups (excellent, honors and pass). Secondly, the study proposed a responsive web application leveraging a Google Visualization Feature to self-check individual academic performance. The goal of this app is to assist users in evaluating individual student performance and assist management in planning for continual quality improvement using the web and mobile apps. The marketing segments include students, academics, university, and school administration for analysis and evaluate the individual student’s performance

Modelling and Simulation of a Single Phase Grid Connected Using Photovoltaic and Battery Based Power Generation

Microgrid is a part of the power distribution system which uses renewable energy based of power generation connected to the grid system. Multi energy power generation is composed of renewable energy systems including photovoltaic, wind turbine, energy storage and local loads. Testbed of a microgrid system is the technique to ensure stable operation during faults and various network disturbances in grid and islanding connected mode. In this paper the microgrid using renewable energy consist of a 3 kW photovoltaic, with 30 pieces of 12V for 100Ah battery bank, DC/DC converter, charge controller for battery, single phase DC/AC inverter and various loads (resistor, capacitor, inductor) are develop. The AC buses 240V voltage include with isolation transformer to simulate the grid voltage level by Matlab/Simulink software

Development of mini scale compressed air energy storage system

Nowadays, we know about the problem of decreasing the source of natural gas fuel, makes the higher fuel cost for Gas Turbine power plant usage. Because of that, the new technology called the Compressed Air Energy Storage system is created. The main concept of this system is use otT-peak power to pressurize air into an underground reservoir, which is then released during peak daytime hour to power Gas Turbine for power production. This project is to design in small scale system where it can use otT-peak electricity to switch on the air compressor to compressed air. Then the compressed air produced will store in high pressure cylinder tank replace the airtight underground caverns. When the air is released from the high pressure tank, the air expands through a micro-turbine which connected single shaft with generator rotor. Then the micro turbine run and rotate generator rotor that convert mechanical energy to electrical energy. Output voltage then will convert from dc to ac voltag

Investigating the Impact of Photovoltaic Connection to the Malaysian Distribution System

This paper investigates the grid-connected photovoltaic (GCPV) effects to the Malaysian distribution systems. Increased in distributed generation installations into electricity distribution network co uld have a better impact on the planning and operation of a power system. The scenario discussed in this paper is the solar irradiance level effects on grid-connected photovoltaic (GCPV) system which located in Universiti Teknikal Malaysia Melaka. The research consists of analysis in current and total harmonic distortion performance due to sun irradiance which may give an impact on photovoltaic systems to generate output power. PV generation depends directly to the sun’s radiation. Hence, the intermittent fluctuations may potentially cause problems to the network operation, especially in high penetration levels. In addition, a larger number of distributed GCPV is added into the grid, the effect or impact may become more significant. There are several previous researched regarding the impacts of PV that have been done in North America, China and Japan. However, the country like Malaysia generally follows the European standard distribution system layout. Besides, Malaysia located near the equator and ideally receives sunshine continuously throughout the year. The different suggest that each system handles unbalanced networks differently and thus require a personalized analysis. The results of data irradiance (W/m 2 ) and harmonic distortion (THD%) of this study fi nally were analyzed and compared in graphical results. At the end of this study, a few suggestions were provided to overcome this problem

Development of a PC-Based Mini-Aerial Helicopter Controller for Surveillance Applications

This paper describles a dsign and development of a PC-based controller of a mini aerial helicopter for surveillance propose applications. The mini-aerial helicopter comes with a build-in intergrated camera that linked to a controller that manipulated by a Graphical User Interface (GUI) program from a Personal Computer (PC)

Linearization - Advantages and Shortcomings Toward Control System Design

This brief manuscript discusses the necessity to linearize nonlinear systems. Thorough review on nonlinear phenomena in dynamical and numerical system is presented. The methodology to linearize nonlinear system in Jacobian approach is shown in didactic manner. Numerical and dynamical example of nonlinear system is provided to enhance understanding. Afterward, the comparison between both linearized and non-linearized system is literally discussed. The outcomes concluded that linearization process is a linear approximation of a nonlinear system that is only valid in a small region around an operating point.

Comparison on thrust characteristic of linear oscillatory actuators

This paper is aimed to analyze the thrust characteristics for two types of Linear Oscillatory Actuator using 3D-Finite Element Method (FEM). The coil currents are analyzed according to the variation displacement of moving yoke of the first one of the LOA. The thrust, normal force and cogging force are analyzed according to the variation of the airgap length, thickness taper and high taper of second LOA. The size of both model of LOA is same but comparison refers to the characteristic of voltage, coil current, number of winding and force. The result of this project can be see from the graph of characteristic both model. Finally, the best characteristics of LOA can be constructed from the result

Control Strategy for Distributed Integration of Photovoltaic and Battery Energy Storage System in Micro-Grids

The micro-grid deployments are growing with independently, power system designers, manufacturers and researchers for the applications where the loads are more efficient association with extra output sources such as Battery Energy Storage System (BESS), and Photovoltaic (PV) systems. Using renewable source as main sources for micro-grid system also can avoid from the pollution to occur. Energy storage when combined with PV system can provide a stronger economic performance, as well as an added benefit of backup power for critical loads. This project proposed control strategies for integration of BESS and PV in a micro-grid. The operation enables the maximum PV and BESS utilization during different operating condition of the micro-grid, grid connected, islanded mode or a process between these two operations. The project will focus on analyzing the performance between photovoltaic system and battery in the simulations of micro-grids system and validate the simulation result using MATLAB/SIMULINK software. After the simulation was analyzed, the understanding of benefit in using renewable energy source as main power supply with support from battery energy storage to supply the power to the loads and power managements is realized in the different modes on micro-grid which is grid connected or islanded states. When the power generation from PV system was not enough to accommodate electric loads, the BESS or from secondary side of transformer will supply the insufficient power