Routing protocols for mobile ad hoc networks have been explored extensively in the past years. Most of the work is aimed at finding a shortest path between the source and the destination, without considering the network performance influencing factors like present network traffic, movements and application requirements etc. In the present world many applications that involve Mobile Ad hoc NETworks (MANETs) contain multimedia data that require Quality of Service (QoS) support for effective transmission. Basically meeting QoS is a mesh of multiple parameters. Many research works so far concentrated QoS routing based on single constraint only. QoS routing based on multiple constraints has been proven to be NP-Complete. Hence, hardly any exact algorithms were proposed for this problem. In this paper a new approach for QoS routing is given based on multiple constraints. In MANETs routing based on Ad hoc On Demand Distance Vector (AODV) protocol provides efficient route establishment between nodes with minimal control overhead and reduced route acquisition latency. In this paper the normal AODV is extended to perform QoS routing based on bandwidth requirement and link stability constraints. Simulation results show that QoS performance of extended AODV is improved in the considerable manner.
In this study, a fuzzy gain scheduled proportional and integral (FGPI) controller was developed to regulate the power flow regulation of Static Synchronous Series Compensator (SSSC) in a multi-area power system. Also, this FGPI was developed for the SSSC without and with Superconducting Magnetic Energy Storage (SMES) system. Two performance criteria were utulized for the comparison. First, settling times and overshoots of the real and reactive power flow were compared. Later, the THD of the Voltage Source Inverter (VSI) output voltage were compared. All the models were simulated by Matlab 7.0-Simulink software. The simulation results show that the FGPI controller developed in this study performs better for the SSSC system with SMES than the other without SMES.
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