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There is no denying the fact that demand for paper to CAD conversion services is increasing tremendously among AEC industry as CAD drawings are more beneficial to design and construction professionals when compared to manual hand drawings website:www.teslacad.com.au
The output frequency of a self excited induction generator (SEIG) driven by wind turbine and supplies static load are controlled, using MATLAB/simulink. The PID controller which employed for turbine rotor speed control and hence the frequency regulation is proposed and simulated by MATLAB software package. The modern wind turbines implement pitch control in order to tap maximum energy at wind speeds lower than rated wind speed. They are simple and rugged in construction and offer impressive efficiency under varying operating conditions. The PID controller which employed for turbine rotor speed control and hence the frequency regulation is proposed. In this paper, a turbine blade pitch control has been assumed for this purpose.
This paper investigates the optimum dispersion mapping for 40Gbps WDM system. The paper shows the performance of five channel WDM system with the channel spacing of 100GHz (0.8nm) by using non-zero dispersion shifted fiber (NZDSF) and dispersion compensation fiber (DCF). In addition it reveals both pre-compensation and residual dispersion per span can develop the performance. The modulation format used is RZ with 33% duty cycle. The optimum dispersion mappings for different channel numbers are discussed with different residual dispersions. By applying the optimum dispersion mapping, the impairments in the system can be minimized effectively .The analysis is done with OptiSystem software.
This paper presents the design and construction of charge controller for wind energy source. The charge controller is a small prototype that is suitable to charge small battery. The maximum charging current of the charge controller is about 7 A. The charge controller is designed using PIC 16F877A microcontroller, liquid-crystal display (LCD), silicon-controlled rectifier (SCR), rectifier diodes and other electronic components. The SCR and rectifier diodes in conjunction with other components are used to charge the battery. The battery charging is controlled by the microcontroller circuit. The LCD module displays the status of the battery while it is charging. At the same time the voltage level of the battery is also displayed. The microcontroller controls the charging circuit and diverted the charging current to the diverted load if the battery is fully charged. The microcontroller also produces signal to the audible alarm circuit in the case of full charge battery.
The overall objective with this paper is to evaluate a method for designing nonlinear controllers in aircrafts with concern in robustness against modeling insecurities and also to minimize the design effort. The later objective is of great importance since there exists, in the industry, an ambition to automatize the design for as far extend as possible. The nonlinear method, State Dependent Riccati Equation (SDRE), used in this work is a nonlinear version of classic LQ design and both are evaluated and compared for a few flying conditions. Also another nonlinear control method is tested. LQ and SDRE show equal performance during both looping and more complicated maneuvers, such as high angle of attack wind-vector roll. Further it is possible to automatize the LQ design as well as it is possible for SDRE. Still SDRE is preferable since it will always be somewhat more accurate than LQ. A Monte Carlo simulation is made on LQ and SDRE showing that the model is robust against relatively lar
In this paper, we analyse two-unit cold standby system with instructions and post-repair inspection. On the failure of a unit, an expert repairman comes with his assistant and gives instructions to his assistant for repairing the unit. After getting instructions, the assistant repairman immediately starts the repair of the failed unit. When the assistant completes the repair, the inspection is carried out by the expert to see whether the unit repaired by his assistant is perfectly repaired or not. If not, the expert himself repairs it perfectly. Various measures of the system effectiveness are obtained by making use of semi-Markov processes and regenerative point technique. Study through graphs is also made.
Due to the rapid technological progress, the consumption of electric energy increases continuously. But the transmission systems are not extended to the same extent because building of new lines is difficult for environmental as well as political reasons. Hence, the systems are driven closer to their limits resulting in congestions and critical situations endangering the system security. Power Flow Control devices such as Flexible AC Transmission Systems (FACTS) provide the opportunity to influence power flows and voltages and therefore to enhance system security, e.g. by resolving congestions and improving the voltage profile. Several kinds of FACTS controllers have been commissioned in various parts of the world. This paper presents various types of FACTS devices such as: load tap changers, phase-angle regulators, static VAR compensators, thyristorcontrolled series compensators, interphase power controllers, static compensators, and unified power flow controllers.
Human capital is just one of an organization’s intangible assets. It is basically all of the competencies and commitment of the people within an organization i.e. their skills, experience, potential and capacity. Human capital management is a reciprocal relationship between supply and demand: employees, contractors and consultants invest their own human capital into business enterprises and the business enterprises need to manage the supplier. Any organization interested in its performance will naturally ask how well they are managing this asset to ensure maximum return on their investment. In the same way, all employees, contractors, consultants and providers of human capital want to ensure they are getting the appropriate return for their own human capital investing through salary, bonuses, benefits, and so on. The aim of this paper is to study of nature of human capital management and its strategic role in achieving of competitive advantage for the organization and it is a review
The paper proposes a new approach for detecting alive human beings in devastating environments using a low cost autonomous robot. The proposed alive human body detection system uses a specific set of sensors that gives information about the presence of an alive human body and a low quality camera to acquire a video of scene of the environment. Having detected an obstacle or alive human body, the set of sensors trigger the camera to show live scene. The video is then displayed on a PC or a laptop at base station and processed at MATLAB for further analysis. The alive human detection system proposed in this paper is highly reliable as it is using a set of sensors for detection. The data and information required to be acquired and processed for rescue operation are less. So, it is very cost effective and faster to be applied in real-time operating environment.
This paper studies the structure and properties of platinum complexes of dithiocarbamate derivatives. Dithiocarbamate complexes are found to be very stable and are highly water soluble due to the presences of hydrophilic moiety in their structure. Such complexes have been used as metal complexing species for several decades. They form chelates with almost all metals ions in the Periodic table and have found numerous applications on biological, agricultural, electronics and act as stabilizing agents in electroless copper plating. In this work, ethylenediamine and diethanolamine dithiocarbamates are prepared and complexed with Pt(II) salts to form stable complexes. The complexes are characterized by Rapid Elemental Analysis. The structure of the stable complexes are confirmed with Electronic and I.R Spectral Analysis.