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Publisher: Springer-Verlag   (Total: 2355 journals)

 Arabian Journal for Science and Engineering   [SJR: 0.345]   [H-I: 20]   [5 followers]  Follow         Hybrid journal (It can contain Open Access articles)    ISSN (Print) 1319-8025    Published by Springer-Verlag  [2355 journals]
• Modeling of Wireless Sensor Networks with Minimum Energy Consumption
• Authors: Abdelhay Ali; Mohammed Abo-Zahhad; Mohammed Farrag
Pages: 2631 - 2639
Abstract: Energy saving is one of the most important issues of wireless sensor networks that are gaining a lot of attention. In other words, energy modeling plays a greater role in energy optimization that helps designers to produce an economical and practical design of sensor nodes. In this paper, an energy consumption model is proposed considering most of the parameters of both MAC and physical layers, unlike other related works that concern with either MAC or physical layer parameters. The proposed energy consumption model is validated with real measurements and NS-2 simulator. Results show good agreement between proposed model, experimental measurements and NS-2 simulator with mean absolute percentage error less than 6 %. The validated model is used to optimize transmitted power to achieve minimum energy consumption. Finally, a closed-form expression for optimum transmitted power is derived for different modulation schemes.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2281-5
Issue No: Vol. 42, No. 7 (2017)

• Deregulated Multiarea AGC Scheme Using BBBC-FOPID Controller
• Authors: Nagendra Kumar; Barjeev Tyagi; Vishal Kumar
Pages: 2641 - 2649
Abstract: In this paper, a fractional-order proportional–integral–derivative (FOPID) controller for automatic generation control (AGC) scheme has been designed utilizing the big bang–big crunch algorithm. An AGC scheme in a deregulated electricity market environment has been developed. The objective was to compute optimal FOPID controller parameters so that on a load perturbation generator can regulate power, to achieve the best dynamic response of frequency. FOPID controller has five parameters to be tuned and provides two more degrees of freedom in comparison with the conventional PID controller. The performance of FOPID controller has been checked on 2-area power system and 75-bus real power system. A comparative study is also carried out between the results of FOPID and PID controllers. The obtained results demonstrate the effective performance of the FOPID controller and show the success and validity of FOPID controller in terms of performance parameters, i.e., settling time and oscillations.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2293-1
Issue No: Vol. 42, No. 7 (2017)

• Optimal Phase Angle Injection for Reactive Power Compensation of

• Authors: Joseph Sanam; A. K. Panda; Sanjib Ganguly
Pages: 2663 - 2671
Abstract: In this paper, the optimal phase angle model and allocation technique of multiple distribution STATCOM (DSTATCOM) in distribution systems for the optimal reactive power compensation is presented. The objective function formulated is the minimization of the active power loss of radial distribution systems (RDS) so as to determine the optimal location(s), optimal phase angle(s), and rating(s) for DSTATCOM, to provide the optimal reactive power compensation. The new modeling of DSTATCOM is developed and is suitably integrated in the forward–backward sweep load flow algorithm so as to determine the line currents, node voltages and the power loss of RDS. Differential evolution algorithm is used as the optimal solution scheme for the optimization of the power loss. The IEEE-69 node RDS is used to validate the efficacy of the proposed approach. The results demonstrate that the proposed technique is more effective in compensating the reactive power to reduce the power loss compared to some of the previous approaches.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2296-y
Issue No: Vol. 42, No. 7 (2017)

• Energy Harvesting from Ambient Radio Frequency: Is it Worth it?
• Authors: S. Mekid; A. Qureshi; U. Baroudi
Pages: 2673 - 2683
Abstract: Ambient energy harvesting has been an attractive area of research due to its prospective applications in several modern low-power systems. The paper reports on the feasibility assessment of energy harvesting from ambient radio frequency signals radiated by different communication sources. The rectenna efficiency and leakage current of a storage capacitor are identified as major sources limiting the harvested power and hence considered as core elements in the development of a practical ambient RF energy harvester. A couple of experiments were performed to analyze the spectrogram of ambient RF energy and the effect of capacitor leakage as well as the level of harvested energy that may be needed by low consumption applications.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2308-y
Issue No: Vol. 42, No. 7 (2017)

• Visual Recurrence Analysis of Chaotic and Regular Motion of a Multiple
Pendulum System
• Authors: Mukul Kumar Gupta; Paawan Sharma; Amit Mondal; Adesh Kumar
Pages: 2711 - 2716
Abstract: In this article, nonlinear dynamics of pendulum systems is studied. The system of governing differential equations is derived using the Euler–Lagrangian approach. The recurrence plot method has been used for the nonlinear dynamics analysis. The natural frequency of a lumped pendulum system is smaller than the natural frequency corresponding to the distributed system. It is also observed that the bottom pendulum is the most chaotic than the middle and the top pendulums. It is also shown that a triple pendulum system with distributed mass is more chaotic than corresponding to the lumped system.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2342-9
Issue No: Vol. 42, No. 7 (2017)

• Modelling of Acoustic Impedance Transfer Function for Liquids Subjected to
a Centrifugation Process
• Authors: M. S. Salim; Naseer Sabri; S. Fouad
Pages: 2717 - 2726
Abstract: During the sedimentation process, the acoustic impedance transfer function of the liquids through which the pulse propagates has variable acoustic impedance. This acoustic impedance that characterizes a liquid during centrifugation is determined by the pulse–echo configuration results in conjunction with the subsequent experimental results. The system transfer function obtained in this fashion has been shown to agree with a direct measurement of the same function in a reference set-up. Based on laboratory experiments and the derived model, determination of separation efficiency with a high accuracy range of measurements is produced. The value of having a model of this type for a complete system is that one can then examine in detail how changes in the transfer function of the medium affect the system performance; estimates of the effects of system changes can also be made without performing costly experimental validation studies.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2345-6
Issue No: Vol. 42, No. 7 (2017)

• Stability Comparison of Fault Location Techniques Against Faulty GPS Time
Tagging for Three-Terminal Lines
• Authors: M. R. Mosavi; A. Tabatabaei; P. Farajiparvar
Pages: 2739 - 2749
Abstract: Fault location techniques based on the arrival times of Traveling Wave (TW) need precise time tagging and synchronization for multi-terminal transmission lines. Although this need can be satisfied by using Global Positioning System, extracting the correct arrival time of the main TW is a troubling task, especially for multi-terminal lines with large number of wave reflections in different directions after fault incident. So, stability of the proposed techniques should be studied when the time tagging has also faced faults. In this paper, three fault location techniques based on TW, Genetic Algorithm (GA) and Artificial Neural Network (ANN) are discussed and then their stabilities against the faulty time tagging are compared. Simulation results show that three discussed methods have relatively close error averages. However, the proposed ANN-based method is twice much more stable than TW- and GA-based methods in about 22.95% of samples.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2394-x
Issue No: Vol. 42, No. 7 (2017)

• New Delay-Dependent Stability Criteria for Singular Systems with
Time-Varying Delay in a Range
• Authors: RamaKoteswara Rao Alla; J. S. Lather; G. L. Pahuja
Pages: 2751 - 2757
Abstract: This paper proposes new delay-dependent stability criteria for a class of singular systems with time-varying delay using Jensen’s and Wirtinger’s inequalities. The proposed delay-dependent stability criteria have been derived in terms of linear matrix inequalities by use of a common augmented Lyapunov–Krasovskii functional. The conservativeness of the proposed stability criteria have been studied and validated on standard example problem. The results prove efficacy of the proposed criteria in terms of conservatism in delay bounds. The stability condition based on Wirtinger’s inequality is shown to be less conservative as compared to one based on Jensen’s inequality.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2395-9
Issue No: Vol. 42, No. 7 (2017)

• Modelling and Genetic Algorithm Based-PID Control of H -Shaped Racing
• Authors: Ahmed Alkamachi; Ergun Erçelebi
Pages: 2777 - 2786
Abstract: This work presents a detailed mathematical modelling of H-shaped racing quadcopter. The complete nonlinear dynamic model is obtained by exploiting Newton–Euler method as a common technique used in quadcopter modelling. A trajectory tracking controller is proposed, in which four PID controllers are designed to stabilize the quadcopter and to achieve the required altitude and orientation. However, a nested loop PID controllers are designed to track the desired x and y position of the quadcopter. The PID coefficients for the aforementioned proposed controllers are tuned using genetic algorithm (GA). The objective function for the GA was set so as to minimize the absolute tracking error, peak overshoot, and settling time for a step inputs. A MATLAB/Simulink environment is used to conduct the system model and the designed controller. The closed loop system performance is depicted for individual step inputs and for a predefined trajectory. Simulation results show a perfect step response performance and excellent trajectory tracking capability with a very low error budget. Finally, the controller robustness is examined and it is shown that the designed controller is robust against sensor noise, external disturbances, and model parameters uncertainties.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2433-2
Issue No: Vol. 42, No. 7 (2017)

• Feedback Stabilization of Nonholonomic Drift-Free Systems Using Adaptive
Integral Sliding Mode Control
• Authors: Muhammad Sarfraz; Fazal-ur Rehman
Pages: 2787 - 2797
Abstract: This article presents a novel stabilizing control algorithm for nonholonomic drift-free systems. The control algorithm is based on adaptive integral sliding mode control technique. In order to utilize the benefit of integral sliding mode control, extended Lie bracket system is used as a nominal system which can easily be asymptotically stabilized. Firstly the original nonholonomic drift-free system is augmented by adding its missing Lie brackets and some unknown adaptive parameters. Secondly the controller and the adaptive laws are designed in such a way that the behaviour of the augmented system is similar to that of the nominal system on the sliding surface and the addition of missing Lie brackets in the original system can be compensated adaptively. The proposed method is applied on two nonholonomic drift-free systems including the Brockett’s system and the hopping robot in flight phase. The controllability Lie Algebra of the Brockett’s system has Lie brackets of depth one, whereas the hopping robot model in flight phase contains Lie brackets of depth one and two. The effectiveness of the proposed technique is verified through simulation studies.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2436-z
Issue No: Vol. 42, No. 7 (2017)

• LMS-Based Variable Step-Size Algorithms: A Unified Analysis Approach
• Authors: Muhammad Omer Bin Saeed
Pages: 2809 - 2816
Abstract: Several variable step-size strategies have been suggested in the literature to improve the performance of the least-mean-square (LMS) algorithm. Although they enhance performance, a major drawback is the complexity in the theoretical analysis of these algorithms. Researchers use several assumptions to find closed-form analytical solutions. This work presents a unified approach for the analysis of variable step-size LMS algorithms. The approach is then applied to several variable step-size strategies, and theoretical and simulation results are compared.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2453-y
Issue No: Vol. 42, No. 7 (2017)

• Estimations of the Domains of Attraction for Classes of Nonlinear
Continuous Polynomial Systems
• Authors: Houssem Jerbi
Pages: 2829 - 2837
Abstract: The present study tackles the problem of assessing asymptotically stable regions for nonlinear, continuous, analytic, and autonomous systems of a particular category. The second section provides a polynomial explanation of each system under study using the Kronecker tensorial product and the generalised Taylor-series expansions. The third section is reserved for determinations of regions of assured stability. The last section provides a derivation of algebraic methods for enlarging initially stable regions that are assured to be exponentially stable. Numerical instances are described to demonstrate the validity of the method evolved for the well-known Hahn and Van der Pol modelling equations.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2513-3
Issue No: Vol. 42, No. 7 (2017)

• Decentralized Single-Neuron-Based Distributed Controller for Vibration
Equalization in an Elastic Coupled Multi-motor System
• Authors: Essam A. G. El-Araby; Mohammad A. El-Bardini; Nabila M. El-Rabaie
Pages: 2885 - 2897
Abstract: Multi-motor system (MMS) is a one of the highly nonlinear complicated MIMO systems used in industry. The elastic coupled MMS forms a mechanical resonator as a result of the stiffness of elastic shafts, which are mechanically coupled to each other. The resulted mechanical resonance frequencies have back effects on the MMS. Some of such effects are: short-term wearing of the system motors, faulty operation of the entire system, and partially or entirely defective product out of the system. The work presented in this paper manipulates the problem resulted in MMS. The main contribution of this paper is to propose a stable control algorithm of single-layer, simple structure neuro-controller. The proposed algorithm is based on Lyapunov theory in applying adaptive learning factor to guarantee bounded control of MMS. The main target of the proposed algorithm is to attenuate the effect of mechanical oscillations resulted in the MMS effectively. An experimental setup of MMS is used to assess the performance of the proposed control technique in the real time and provide the experimental data. Moreover, stability analysis of the employed technique based on Lyapunov stability theory is presented in the paper.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2312-2
Issue No: Vol. 42, No. 7 (2017)

• Bi-index Constraints-Based Output Feedback Fault-Tolerant Control for
Aero-Engine Distributed Control Systems
• Authors: Ledi Zhang; Litong Ren; Shousheng Xie; Yu Zhang; Lei Wang; Xianyu Zhang
Pages: 2937 - 2946
Abstract: With a focus on the aero-engine distributed control system (DCS) with parameter perturbation, Markov time delay, data packet dropout and external disturbance, a research has been carried out on DCS fault-tolerant control on condition of partial failure of actuator. First, a quantitative description of the system parameters is given, and the augmented model of the entire closed-loop system is established. Then the stability of the closed-loop system constrained by $$H_\infty$$ and cost performance index is analyzed, and the method of designing optimal guaranteed cost fault-tolerant controller is proposed based on dynamic output feedback. Finally, the consistency theory of bi-index constraints is introduced, based on which the fault-tolerant controller is designed. The simulation results show that the designed controller can effectively reduce the controlling cost of the system while guaranteeing its $$H_\infty$$ performance.
PubDate: 2017-07-01
DOI: 10.1007/s13369-016-2384-z
Issue No: Vol. 42, No. 7 (2017)

• Predictive Control of a Production System that Uses Advertising
• Authors: Messaoud Bounkhel; Lotfi Tadj; Ozen Asik-Dizdar
Pages: 2961 - 2969
Abstract: We consider in this paper a firm that produces a single product. It aims at determining the optimal production and advertising rates. Units of the product are subject to deteriorate while on the shelves. Advertising is modeled using the Nerlove–Arrow model. The system is of the tracking type as the firm has set targets for its state and control variable. Explicit expressions are obtained for the optimal control and state variables using a model predictive control approach.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2460-z
Issue No: Vol. 42, No. 7 (2017)

• Speed Control of an Uncertain Heavy-Duty Vehicle Using Improved IMC
Technique
• Authors: Anil Kumar Yadav; Prerna Gaur
Pages: 2981 - 2991
Abstract: An improved internal model control (IMC) for speed control and disturbance rejection of the heavy-duty vehicle (HDV) is proposed. The limitation of conventional IMC is the steady-state error in accelerating and decelerating mode of the vehicle. In this work, the conventional low-pass filter is modified and replaced by a filter named as robust filter and its parameters are determined using simple designed formula as proposed in this work. The clustering and Hankel approximation approaches are used for order reduction, and $${H}_\infty$$ control technique is employed for the design of improved IMC structure. The proposed control techniques are developed to achieve the better speed regulation and disturbance rejection performances of HDV system in the influence of road grade disturbance.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2481-7
Issue No: Vol. 42, No. 7 (2017)

• Subway Traffic Regulation Using Model-Based Predictive Control by
Considering the Passengers Dynamic Effect
• Authors: B. Moaveni; M. Karimi
Pages: 3021 - 3031
Abstract: This paper presents a regulation technique based on the model-based predictive control (MPC) for a subway traffic system. The role of passengers in the traffic system has been modeled analytically by considering passenger flow arriving at platforms, passenger demand and the number of passengers at the platforms and in the trains. Three major reasons for passenger discomfort are introduced (waiting and traveling, congestion and jitter discomfort) to develop an appropriate objective function. The MPC approach is used to develop control actions to minimize the objective function by conforming to safety and operational constraints. A simulation was carried out using the specifications of Tehran Metro Line 2, the results of which demonstrate the effectiveness of the proposed method.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2508-0
Issue No: Vol. 42, No. 7 (2017)

• Delay-Derivative-Dependent Stability for Neutral Systems with Time-Varying
Delay and Nonlinearity
• Authors: Ting Wang; Tao Li; Guobao Zhang; Shumin Fei
Pages: 3033 - 3042
Abstract: The asymptotical stability for a class of neutral systems with time-varying delay and restricted nonlinearity is investigated. Firstly, during choosing the Lyapunov–Krasovskii functional (LKF), two adjusting scalars $$\alpha ,\beta \in (0,1]$$ will be introduced and they can effectively reduce the conservatism once the upper bound of delay derivative is very large. Then by utilizing some integral inequalities, the much tighter bound on LKF derivative is presented and some previously ignored information can be fully utilized by employing an extended convex combination technique. Furthermore, two stability criteria are presented in terms of LMIs and they can be easily checked. Finally, some numerical examples with comparing results can illustrate the superiorities of the derived results.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2462-x
Issue No: Vol. 42, No. 7 (2017)

• Stochastic Behavior of a Two-Unit Cold Standby Redundant System Under
Poisson Shocks
• Authors: Mohamed Salah El-Sherbeny
Pages: 3043 - 3053
Abstract: This article investigates the influence of some system parameters on a system consisting of a 2-unit cold standby system with a single repair person. The system failure is due to an external factor like Poisson shocks that occur in different times. The shocks arrive according to a Poisson process, in addition to the fact that its magnitudes are independent random variable that follows a known distribution. The measures of reliability are determined by using a supplementary variable technique and Laplace transform. The sensitivity and relative sensitivity analysis of the reliability characteristics in terms of the system parameters are calculated. There is also a comparison between two-stage Erlang and exponential distribution as a special case.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2515-1
Issue No: Vol. 42, No. 7 (2017)

• Robust Fault-Tolerant Control of Wind Turbine Systems Against Actuator and
Sensor Faults
Pages: 3055 - 3063
Abstract: This paper develops a novel observer-based fault-tolerant control (FTC) for wind turbine blade pitch system subjected to simultaneous actuator and sensor faults. The main contribution of this paper is the proposal of new architecture based on a combination of sliding mode control (SMC) and a proportional–proportional–integral-observer (PPIO) to provide tight reference blade pitch angle tracking regardless of the effects of actuator and sensor faults. Within this architecture, an integral sliding surface-based SMC (ISMC) has been developed to stabilize tracking error dynamics during sliding phase while the system is subjected to actuator faults. The robust PPIO-based sensor fault estimation is utilized to compensate sensor fault from the input of ISMC and thereby guarantee closed-loop system robustness against actuator and sensor faults. Stability analysis has clearly demonstrated using linear matrix inequality and Lyapunov approach. The proposed method is applied to 4.8 MW wind turbine FTC benchmark model.
PubDate: 2017-07-01
DOI: 10.1007/s13369-017-2525-z
Issue No: Vol. 42, No. 7 (2017)

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