![]() How is reliability calculated for maxon controllers?.For a low resistance value of the LDR due to illumination, the voltage to the non-inverting input becomes 6V, thereby causing the transistor to saturates, that is turned ON and the connected relay is energised. The paper also did a review of Fault tree analysis as a reliability prediction tool. A model was developed for evaluating or assessing the failure rate of the locally developed and constructed dark detector. The aim of this paper is to develop a model for assessing the reliability of a designed and implemented dark detector switch using fault tree analysis. – In other to mitigate the short comings of mechanical switches, solid state switches such as the dark detectors are preferred. MATLAB Programming is developed for overall system reliability analysis. Customer-and Load-Oriented indices of overall Power Distribution System are predicted from load details, failure rate and Unavailability under each feeder line. Mean Time To Failure (MTTF), Mean Time To Repair (MTTR), Mean Time Between Failure (MTBF) of the overall system are calculated from failure rate and repair rate of each component. ![]() In this work Reliability Analysis is conducted for each component like Miniature Circuit Breaker (MCB), Moulded Case Circuit Breaker (MCCB) and other different components by calculating failure rate and repair rate individually on yearly basis. The Power Distribution System at SIPRA Labs (BALANAGAR FACILITY) consists of three phase and single phase loads. The important goals of reliability and maintainability of distribution systems are availability of continuous power and meeting the load requirements. The consequences of failure include high cost of maintenance, undesirable effects and risks which affect the power consumers. The reliability analysis is carried out using ITEMSOFT Tool.įrequent occurrence of failures is common in Electrical Power Distribution Systems. To control these failures proper methods are considered to improve the reliability of system. The procedure for performing a failure mode effects and criticality analysis developed by MIL-STD-1629. FMECA used to obtain the failure modes of the components, their effect on system, identifies the criticality and corresponding changes are made in the design to reduce the failure modes. Reliability Block Diagram (RBD) used to know the parts reliability how it contributes to success or failure of a system using logical operations of the system. Reliability Prediction obtained in accordance with MIL-HDBK-217F2. Reliability Analysis gives the Prediction of the failure Rate and Mean Time Between Failures (MTBF). In order to obtain the reliability of ECU and RU of DLDS, in this paper developed the Reliability Prediction, Reliability Block Diagram (RBD) and Failure Mode Effect and Criticality Analysis (FMECA). It is necessary to improve the reliability of the control units. RU is controlled by directors through remotely (infrared signals). ECU is manually controlled and it acts as a master controller for the launcher. They are Electronic Control Unit (ECU) and Remote Unit (RU). For controlling the Decoy Launcher, two control units are there. Controlling of decoy launcher plays a crucial role in launching and firing of Decoys. The DLDS shall enable timely defence against incoming Decoys at sufficient range from the submarine to guarantee safety and survivability of own platform. The system offers a complete solution to detect and locate an incoming Decoy and provides highly effective defence for the system. Decoy Launcher Defence System (DLDS) designed to detect, to track and to localize the incoming Decoy from the enemies and it is a countermeasure system. With the development of technology, effective countermeasures of decoy launcher are developed. Further work can be done by evaluating the reliability of the device using part stress analysis this will enable the determination of the reliability under actual operating conditions to be carried out. It is observed that the reliability of the Clap Activated Switch constructed locally have an estimated reliability that ranges between 0.99706 for the first year of operation to 0.94299 around the twentieth year of operation. The part count method which assumes typical operating conditions of part or components complexity, ambient temperature, various electrical stresses, operation mode and environment (called reference conditions) was used for the estimation of the reliability of the Clap Activation Switch. The amplified output from the transistor is then fed to the Bistable Multivibrator circuit. The microphone transduces the sound wave to electrical waves which is further amplified by transistor connected in the common emitter configuration. The sound of clap is detected by a small condenser microphone. In this research work, the reliability of a locally designed and constructed clap activated switch was determined.
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