Performance Optimization Based Spectrum Analysis on Optical Fiber Raman Amplifier with Backward Pumping

2012 ◽  
Vol 263-266 ◽  
pp. 1004-1007 ◽  
Author(s):  
Li Ying Liu ◽  
Yan Huang ◽  
Chun Yu Liu ◽  
Xin Ming Zhang ◽  
Jiu Ru Yang
Keyword(s):  
Optical Fiber ◽  
Spectrum Analysis ◽  
Performance Optimization ◽  
Low Cost ◽  
Low Complexity ◽  
Gain Bandwidth ◽  
Raman Amplifier ◽  
Fiber Raman Amplifier ◽  
Output Performance ◽  
Output Characteristics

Optical fiber Raman amplifier (OFRA) with wide and flat gain bandwidth has been widely applied in the fields of optical communication, sensing and measurement. However, the performance optimization is always one of the hot topics in the study of OFRA, because its output characteristics are hardly dependent to some key designing parameters. In this paper, to overcome the problems above, we adopt a spectrum analysis based method to study the output performance of an OFRA system with backward pumping. By simulating the operation of the OFRA system, its output characteristics are first showed easily, with the advantages of real time, low cost, and low complexity. Further, according to the numerical results obtained, the optimal parameters of an OFRA system are determinate, and the performance in terms of output power, signal noise ratio, and the level of gain flatness is improved and optimized obviously.

scholarly journals Monitoring and controlling the speed and direction of a DC motor through FPGA and comparison of FPGA for speed and performance optimization

2021 ◽  
Vol 11 (5) ◽  
pp. 3903
Author(s):  
Huda M. Abdul Abbas ◽  
Raad Farhood Chisab ◽  
Mohannad Jabbar Mnati
Keyword(s):  
Real Time ◽  
Performance Optimization ◽  
Pulse Width Modulation ◽  
Electronic Device ◽  
Low Cost ◽  
Dc Motor ◽  
Know How ◽  
Field Programmable ◽  
Programmable Gate Arrays ◽  
And Performance

<span lang="EN-US">We are living in the 21<sup>st</sup> century, an era of acquiring necessity in one click. As we, all know that technology is continuously reviving to stay ahead of advancements taking place in this world of making things easier for mankind. Technology has been putting his part in introducing different projects as we have used the field programmable gate arrays (FPGAs) development board of low cost and programmable logic done by the new evolvable cyclone software is optimized for specific energy based on Altera Cyclone II (EP2C5T144) through which we can control the speed of any electronic device or any Motor Control IP product targeted for the fan and pump. Altera Cyclone FPGAs’ is a board through which we can monitor the speed and direction of the DC motor. As we know how to make understand, dynamic analog input using an A-to-D convertor and we know how to create pulse width modulation (PWM) output with FPGA. Therefore, by combining these two functions we can create an FPGA DC motor controller. Our paper is divided into three parts: First, all of us will attempt to imitate the issue and can try to look for its answer. Secondly, we will try to verify the solution for real-time. In addition, in the last step, we will verify the solution on the real-time measurements.</span>

Nest-like V3O7 self-assembled by porous nanowires as an anode supercapacitor material and its performance optimization through bonding with N-doped carbon

2018 ◽  
Vol 6 (34) ◽  
pp. 16475-16484 ◽  
Author(s):  
Danyang Zhao ◽  
Qiancheng Zhu ◽  
Dejian Chen ◽  
Xi Li ◽  
Ying Yu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Performance Optimization ◽  
Electrode Materials ◽  
Low Cost ◽  
Vanadium Oxides ◽  
Electrochemical Activity ◽  
Great Promise ◽  
Self Assembled

Vanadium oxides (such as V2O5, V2O3 and VO2) hold great promise as electrode materials for energy storage due to their high electrochemical activity, low cost and environmental benignity.

Full Load Performance Optimization Based on Turbocharger Speed Evaluation via Acoustic Sensing

2014 ◽  
Author(s):  
Nicolò Cavina ◽  
Matteo De Cesare ◽  
Vittorio Ravaglioli ◽  
Fabrizio Ponti ◽  
Federico Covassin
Keyword(s):  
Performance Optimization ◽  
High Performance ◽  
Low Cost ◽  
Control Architecture ◽  
Passenger Cars ◽  
Turbocharged Diesel Engine ◽  
Passenger Car ◽  
Full Load ◽  
Speed Sensor ◽  
Speed Measurement

Turbocharger performance optimization on passenger car engines is particularly challenging, especially in case of severe engine downsizing and downspeeding. On high performance engines (e.g., heavy duty truck applications) turbocharger speed measurement is usually performed with the aim of maximizing engine power and torque, limiting turbocharger over-speed, which is harmful for its durability and reliability. This solution is too expensive for passenger cars, and the turbocharger speed sensor is typically not available. In this work, an innovative and low cost sensing chain for the rotational speed evaluation of the turbocharger is applied. With this information, obtained via an acoustic sensor, a new turbocharger control architecture has been developed to optimize turbocharger performance, in order to improve engine output torque under full load conditions. After a brief description of the new sensing chain and of the electronic components developed to manage this kind of information, the paper shows the new control architecture that takes advantage of the turbocharger speed information. Moreover, experimental results on a small turbocharged Diesel engine for passenger car applications are presented, demonstrating the achieved benefits.

Design, Modeling, and Performance Optimization of a Reversible Heat Pump/Organic Rankine Cycle System for Domestic Application

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Sylvain Quoilin ◽  
Olivier Dumont ◽  
Kristian Harley Hansen ◽  
Vincent Lemort
Keyword(s):  
Heat Pump ◽  
Performance Optimization ◽  
Low Cost ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Operating Conditions ◽  
Working Fluid ◽  
Thermal Source ◽  
Cycle System ◽  
And Performance

In this paper, an innovative system combining a heat pump (HP) and an organic Rankine cycle (ORC) process is proposed. This system is integrated with a solar roof, which is used as a thermal source to provide heat in winter months (HP mode) and electricity in summer months (ORC mode) when an excess irradiation is available on the solar roof. The main advantage of the proposed unit is its similarity with a traditional HP: the HP/ORC unit only requires the addition of a pump and four-way valves compared to a simple HP, which can be achieved at a low cost. A methodology for the optimal sizing and design of the system is proposed, based on the optimization of both continuous parameters such as heat exchanger size or discrete variables such as working fluid. The methodology is based on yearly simulations, aimed at optimizing the system performance (the net yearly power generation) over its whole operating range instead of just nominal sizing operating conditions. The simulations allow evaluating the amount of thermal energy and electricity generated throughout the year, yielding a net electric power output of 3496 kWh throughout the year.

Performance Evaluation of ZigBee Routing Algorithms in Smart Grid

2013 ◽  
Vol 336-338 ◽  
pp. 2428-2432
Author(s):  
Qing Qi Zhao ◽  
Hong Hao Zhao ◽  
Fan Bo Meng ◽  
Zhen Jiang Lei
Keyword(s):  
Smart Grid ◽  
Low Power ◽  
Performance Optimization ◽  
Low Cost ◽  
Routing Algorithm ◽  
Cluster Tree ◽  
Hybrid Routing ◽  
Stability Robustness ◽  
Transmission Reliability ◽  
Tree Routing

In order to meet the requirements of Smart Grid in data acquisition, transmission reliability, stability, robustness and low power consumption of devices, ZigBee with its significant advantages of low power, low cost, low rate and easy to use, can play an important role in Smart Grid. As one of the key technologies of ZigBee, routing technology plays an important role in the performance optimization of network. Thus, in this paper, we focus on cluster-tree routing algorithm and hybrid routing algorithm in ZigBee network. Simulation and results show that, hybrid routing algorithm has better performance than cluster-tree routing algorithm in network throughput, average traffic received, average number of hops, network delay and network load.

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