ISSN(Online) : 2319-8753 ISSN (Print) : 2347-6710 International Journal of Innovative Research in Science, Engineering and Technology (An ISO 3297: 2007 Certified Organization) Vol. 4, Issue 10, October 2015 Copyright to IJIRSET DOI:10.15680/IJIRSET.2015.0410011 9565 Performance and Reliability Analysis of a Mobile Robot Using Cara Fault Tree Manjish Adhikari [1] , Vishal Mandal [2] U.G. Student, Department of Electronics and Communication Engineering, UCEK, Jawaharlal Nehru Technological University, Kakinada, A.P, India [1] U.G. Student, Department of Mechanical Engineering, UCEK, Jawaharlal Nehru Technological University, Kakinada, A.P, India [2] ABSTRACT: This paper collects a number of considerations on problems and challenges of current reliability engineering research. This work is the expansion of Panagiotis and Fourlas’s analysis where using a simpler approach of analysis by Cara Fault Tree, reliability of wireless mobile robot is accessed. The reliability data at both component level and system level is calculated from the experiment conducted on the wireless mobile robot. Critical components of the robot with respect to failure frequency and reliability are identified. The focus on reliability engineering is with respect to its role within the current developments of system safety and risk analysis. KEYWORDS: Reliability, MTBF, MTTR, Availability I. INTRODUCTION Reliability is a broad term that focuses on the ability of a product to perform its intended function. Reliability engineering consists of the systematic application of time-honored engineering principles and techniques throughout a product lifecycle and is thus an essential component. The goal of reliability engineering is to evaluate the inherent reliability of a product or process and pinpoint potential areas for reliability improvement. Realistically, all failures cannot be eliminated from a design, so another goal of reliability engineering is to identify the most likely failures and then identify appropriate actions to mitigate the effects of those failures. Reliability engineering checks the reliability and fault analysis of any system. Reliability engineering has a wide scope and thus can be used in almost all fields. Be it, Civil engineering, computer science, electrical or mechanical, it’s found a unique place in almost all the fields. Reliability engineers check the durability and lifelong capacity of systems. It also helps engineers and business investors to think of different parameters which can lead to system failure and the ways from which those failures can be eliminated to certain extent. It’s a discipline associated with planning and coordinating to achieve a technological objective. It’s a measure of performance of many systems, subsystems and components. Reliability is a fundamental attribute for the safe operation of any modern technological system. Focusing on safety, reliability analysis aims at the quantification of the probability of failure of the system and its protective barriers. Reliability is one of the most important characteristics of an engineering system. Probabilistic formulations of reliability are useful for component selection, verification testing, and field-service management. However, at the early stages of system architecting and concept design, probabilistic formulations are not as helpful. We propose that thinking in terms of physical mechanisms of failure is much more effective and that the fundamental principle of reliability engineering is failure-mode avoidance. To this we add the principle that this should be done early and rapidly during the system development. The reliability of any system can be checked using a bunch of software, the software used for testing the reliability of systems are easy to use, but one needs to pay a special attention while analysing, because this is one thing that forms the core of performance and reliability assessment. We evaluated the reliability of a robot using CARA Fault Tree Analysis, but it is to be remembered that there are a lot of reliability software that can be used to access the reliability of components.