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Articles by Shahrizal Saat
Total Records ( 4 ) for Shahrizal Saat
  N.A. Ab Hadi , K.A.M. Annuar , G. Nathan , W.N. Abd Rashid , A.F. Kadmin , M.Y. Ali , Shahrizal Saat and N.R. Mohamad
  Now a days, in industrial, commercial and domestic world, automation assumes an essential part. It is really a planning of various components so as to control, sense, regulate and instruct itself to accomplish a wanted result. This study purposely designed to develop a smart multiple sensor based firefighting robot in our everyday life. So, a smart autonomous fire detector which deflects obstacle on pathway will be created with an extinguisher and some other important elements which controlled by a microcontroller. The system is cost effective has an extensive use. It can present effectively and good outcome during execution. It can be utilized purposely in commercial, domestic sectors and industrial uses which the condition of automatic job needed. If any fire detected, it will extinguish the fire using a water pump that gives to it. This system also able to avoid obstacles on its pathway by changing its direction of movement. This method is possible with the use of ultrasonic sensors. After extinguishing the fire it will move back to find another any presence of fire. It voluntarily senses and extinguishes fire without human guidance. This is mean to simulate the actual world process of robot executing a fire extinguishing task.
  Shahrizal Saat , Nur Shahirah Zakaria , Mohd Zaidi Mohd Tumari , Mohamed Saiful Firdaus Hussin , Ahmad Nizamuddin Muhammad Mustafa and Mohd Anuar Adip
  The term crosswinds are mean the horizontal winds blowing at 90° from the direction of travels with the speed of 12.5 miles/sec. Crosswind could make a trouble when traveling on wet or slippery roads, especially, during heavy rain and thunderstorms. It can make the vehicle overturning when crosswind blows through it. Windsock invisible at night can cause danger to highway users. This problem can increase the risk of being involved in the accident. To overcome this problem, the crosswind detection for direction and speed monitoring system at highway is being introduced. The signal from speed and direction sensor will be processed by controller and transmitted to the cloud. The outputs from the controller will be transmitted to the LCD screen to display the current information of crosswind and give the warning to the road users. LED light will indicate the status of the crosswind. Controller will update the data to the cloud through WiFi module. Data stored in the cloud can be accessed by user using Blynk App. It could help to reduce potential of accident occur, especially, at night for highway user.
  Shahrizal Saat , AN.MF. Airini , Muhammad Salihin Saealal , A.R. Wan Norhisyam and M.S. Farees Ezwan
  This study presents an application of LiDAR sensor for 2D mapping construction in an unkwown environments and capability to localize its own location based on landmark detected. Previously, there are various research actively conducted by others researchers for SLAM application. In general, it can be categorized based on three different type of sensor measurement and technique such as vision based SLAM, RGB-D based SLAM and also laser based SLAM. The main focus in this project is to present an experiment result conducted of a Simultaneous Localization and Mapping (SLAM) application based on laser sensor which is LiDAR in term of capability of mapping construction and localization it self. LiDAR sensor is put on the vehicle that will operate in real-world environments and computational processing done by using Robotic Operating System (ROS). This project is tested and verified in a curtain room with several parameter by using Robot Operating System (ROS). SLAM was implemented to provide localization estimates in environments where there are static landmarks that are only rarely recognized by the vehicle or robot. This project also, consider the features that enter and leave the environment as temporary landmarks that can be used in combination with the rarely seen static landmarks. As conclusion, performance of SLAM by using LiDAR sensor can be apply for several robotic system such as flight control, obstacle avoidance, navigation and other function in the future application.
  Mohd Zaidi Mohd Tumari , Muhamad Azidi Mohd Nasir , Shahrizal Saat , A. Shamsul Rahimi A. Subki , Wan Norhisyam Abd Rashid , Mohd Helmi Suid and Mohd Riduwan Ghazali
  Recently, the Vehicle Steer-By-Wire (VSBW) system has improved significantly in terms of vehicle dynamics, comfort, safety, maneuverability and stability. VSBW eliminates the mechanical linkage between steering wheel and the front wheels which caused the practical problems for vehicle steering control. This study presents investigations into the development of PID and fuzzy logic control schemes for steering wheel returnability, directional control and wheel synchronization of a VSBW system. For PID control scheme, PD controller is used to control the returnability of steering wheel while PID controller is used to control the angle of front wheel. The Ziegler Nichols method is used for tuning the PID parameters. The fuzzy logic controller is used to control the returnability of steering wheel. The implementation environment is developed within LabView Software for comparison of performance for both control schemes. Implementation results of the response of the VSBW system with the PID and fuzzy logic controller are presented in time domains. The performances of control schemes are examined in terms of steering wheel returnability, directional control and wheel synchronization.
 
 
 
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