**Commenced**in January 2007

**Frequency:**Monthly

**Edition:**International

**Paper Count:**780

# Search results for: smart beam

##### 780 Enhancement of Performance Utilizing Low Complexity Switched Beam Antenna

**Authors:**
P. Chaipanya,
R. Keawchai,
W. Sombatsanongkhun,
S. Jantaramporn

**Abstract:**

To manage the demand of wireless communication that has been dramatically increased, switched beam antenna in smart antenna system is focused. Implementation of switched beam antennas at mobile terminals such as notebook or mobile handset is a preferable choice to increase the performance of the wireless communication systems. This paper proposes the low complexity switched beam antenna using single element of antenna which is suitable to implement at mobile terminal. Main beam direction is switched by changing the positions of short circuit on the radiating patch. There are four cases of switching that provide four different directions of main beam. Moreover, the performance in terms of Signal to Interference Ratio when utilizing the proposed antenna is compared with the one using omni-directional antenna to confirm the performance improvable.

**Keywords:**
Switched beam,
shorted circuit,
single element,
signal to interference ratio.

##### 779 Control of Vibrations in Flexible Smart Structures using Fast Output Sampling Feedback Technique

**Authors:**
T.C. Manjunath,
B. Bandyopadhyay

**Abstract:**

**Keywords:**
Smart structure,
Finite element method,
State spacemodel,
Euler-Bernoulli theory,
SISO model,
Fast output sampling,
Vibration control,
LMI

##### 778 Multivariable Control of Smart Timoshenko Beam Structures Using POF Technique

**Authors:**
T.C. Manjunath,
B. Bandyopadhyay

**Abstract:**

**Keywords:**
Smart structure,
Timoshenko theory,
Euler-Bernoulli
theory,
Periodic output feedback control,
Finite Element Method,
State space model,
Vibration control,
Multivariable system,
Linear
Matrix Inequality

##### 777 Vibration Control of a Cantilever Beam Using a Tunable Vibration Absorber Embedded with ER Fluids

**Authors:**
Chih-Jer Lin,
Chun-Ying Lee,
Chiang-Ho Cheng,
Geng-Fung Chen

**Abstract:**

This paper investigates experimental studies on vibration suppression for a cantilever beam using an Electro-Rheological (ER) sandwich shock absorber. ER fluid (ERF) is a class of smart materials that can undergo significant reversible changes immediately in its rheological and mechanical properties under the influence of an applied electric field. Firstly, an ER sandwich beam is fabricated by inserting a starch-based ERF into a hollow composite beam. At the same time, experimental investigations are focused on the frequency response of the ERF sandwich beam. Second, the ERF sandwich beam is attached to a cantilever beam to become as a shock absorber. Finally, a fuzzy semi-active vibration control is designed to suppress the vibration of the cantilever beam via the ERF sandwich shock absorber. To check the consistency of the proposed fuzzy controller, the real-time implementation validated the performance of the controller.

**Keywords:**
Electro-Rheological Fluid,
Semi-active vibration
control,
shock absorber,
fuzzy control,
Real-time control.

##### 776 Active Control Improvement of Smart Cantilever Beam by Piezoelectric Materials and On-Line Differential Artificial Neural Networks

**Authors:**
P. Karimi,
A. H. Khedmati Bazkiaei

**Abstract:**

**Keywords:**
Smart material,
on-line differential artificial neural
network,
active control,
finite element method.

##### 775 Fractional Order Controller Design for Vibration Attenuation in an Airplane Wing

**Authors:**
Birs Isabela,
Muresan Cristina,
Folea Silviu,
Prodan Ovidiu

**Abstract:**

The wing is one of the most important parts of an airplane because it ensures stability, sustenance and maneuverability of the airplane. Because of its shape, the airplane wing can be simplified to a smart beam. Active vibration suppression is realized using piezoelectric actuators that are mounted on the surface of the beam. This work presents a tuning procedure of fractional order controllers based on a graphical approach of the frequency domain representation. The efficacy of the method is proven by practically testing the controller on a laboratory scale experimental stand.

**Keywords:**
Fractional order controller,
piezoelectric actuators,
smart beam,
vibration suppression.

##### 774 Development of Rotational Smart Lighting Control System for Plant Factory

**Authors:**
Won-Sub Lee,
Sung-Gaun Kim

**Abstract:**

**Keywords:**
Plant Factory,
Lighting Control System,
Rotational
Lighting System,
Lighting Equipment

##### 773 Controller Design for Euler-Bernoulli Smart Structures Using Robust Decentralized FOS via Reduced Order Modeling

**Authors:**
T.C. Manjunath,
B. Bandyopadhyay

**Abstract:**

**Keywords:**
Smart structure,
Euler-Bernoulli beam theory,
Fastoutput sampling feedback control,
Finite Element Method,
Statespace model,
Vibration control,
LMI,
Model order Reduction.

##### 772 Controller Design for Euler-Bernoulli Smart Structures Using Robust Decentralized POF via Reduced Order Modeling

**Authors:**
T.C. Manjunath,
B. Bandyopadhyay

**Abstract:**

**Keywords:**
Smart structure,
Euler-Bernoulli beam theory,
Periodic output feedback control,
Finite Element Method,
State space
model,
SISO,
Embedded sensors and actuators,
Vibration control,
Reduced order model

##### 771 Stability of Homogeneous Smart Beams based on the First Order Shear Deformation Theory Located on a Continuous Elastic Foundation

**Authors:**
A. R. Nezamabadi,
M. Karami Khorramabadi

**Abstract:**

**Keywords:**
Stability,
Homogeneous beam- Piezoelectric layer

##### 770 Modeling and FOS Feedback Based Control of SISO Intelligent Structures with Embedded Shear Sensors and Actuators

**Authors:**
T. C. Manjunath,
B. Bandyopadhyay

**Abstract:**

**Keywords:**
Smart structure,
Timoshenko beam theory,
Fast output sampling feedback control,
Finite Element Method,
State space model,
SISO,
Vibration control,
LMI

##### 769 Vibration Suppression of Timoshenko Beams with Embedded Piezoelectrics Using POF

**Authors:**
T. C. Manjunath,
B. Bandyopadhyay

**Abstract:**

**Keywords:**
Smart structure,
Timoshenko beam theory,
Periodic
output feedback control,
Finite Element Method,
State space model,
SISO,
Embedded sensors and actuators,
Vibration control.

##### 768 A Multiple Beam LTE Base Station Antenna with Simultaneous Vertical and Horizontal Sectorization

**Authors:**
Mohamed Sanad,
Noha Hassan

**Abstract:**

A low wind-load light-weight broad-band multi-beam base station antenna has been developed. It can generate any required number of beams with the required beamwidths. It can have horizontal and vertical sectorization at the same time. Vertical sectorization doubles the overall number of beams. It will be very valuable in LTE-A and 5G. It can be used to serve vertically split inner and outer cells, which improves system performance. The intersection between the beams of the proposed multi-beam antenna can be controlled by optimizing the design parameters of the antenna. The gain at the points of intersection between the beams, the null filling and the overlap between the beams can all be modified. The proposed multi-beam base station antenna can cover an unlimited number of wireless applications, regardless of their frequency bands. It can simultaneously cover all, current and future, wireless technology generations such as 2G, 3G, 4G (LTE), --- etc. For example, in LTE, it covers the bands 450-470 MHz, 690-960 MHz, 1.4-2.7 GHz and 3.3-3.8 GHz. It has at least 2 ports for each band in each beam for ±45° polarizations. It can include up to 72 ports or even more, which could facilitate any further needed capacity expansions.

**Keywords:**
Base station antenna,
multi-beam antenna,
smart antenna,
vertical sectorization.

##### 767 Nonlinear Simulation of Harmonically Coupled Two-Beam Free-Electron Laser

**Authors:**
M. Zahedian,
B. Maraghechi,
M. H. Rouhani

**Abstract:**

**Keywords:**
Free-electron laser,
Higher energy beam,
Lowerenergy beam,
Two-beam

##### 766 Vibration Control of a Functionally Graded Carbon Nanotube-Reinforced Composites Beam Resting on Elastic Foundation

**Authors:**
Gholamhosein Khosravi,
Mohammad Azadi,
Hamidreza Ghezavati

**Abstract:**

**Keywords:**
Carbon nanotubes,
vibration control,
piezoelectric layers,
elastic foundation.

##### 765 Smart Spoiler for Race Car

**Authors:**
M.H. Djavareshkian,
A. Esmaeli

**Abstract:**

**Keywords:**
Smart spoiler,
Ground Effect,
Flap,
Aerodynamic
coefficients,
Race car.

##### 764 Investigation on an Innovative Way to Connect RC Beam and Steel Column

**Authors:**
Ahmed H. El-Masry,
Mohamed A. Dabaon,
Tarek F. El-Shafiey,
Abd El-Hakim A. Khalil

**Abstract:**

An experimental study was performed to investigate the behavior and strength of proposed technique to connect reinforced concrete (RC) beam to steel or composite columns. This approach can practically be used in several types of building construction. In this technique, the main beam of the frame consists of a transfer part (part of beam; Tr.P) and a common reinforcement concrete beam. The transfer part of the beam is connected to the column, whereas the rest of the beam is connected to the transfer part from each side. Four full-scale beam-column connections were tested under static loading. The test parameters were the length of the transfer part and the column properties. The test results show that using of the transfer part technique leads to modify the deformation capabilities for the RC beam and hence it increases its resistance against failure. Increase in length of the transfer part did not necessarily indicate an enhanced behavior. The test results contribute to the characterization of the connection behavior between RC beam - steel column and can be used to calibrate numerical models for the simulation of this type of connection.

**Keywords:**
Composite column,
reinforced concrete beam,
Steel
Column,
Transfer Part.

##### 763 Propagation of Cos-Gaussian Beam in Photorefractive Crystal

**Authors:**
A. Keshavarz

**Abstract:**

**Keywords:**
Beam propagation,
cos-Gaussian beam,
Numerical
simulation,
Photorefractive crystal.

##### 762 Mathematical Modeling of SISO based Timoshenko Structures – A Case Study

**Authors:**
T.C. Manjunath,
Student Member,
B. Bandyopadhyay

**Abstract:**

This paper features the mathematical modeling of a single input single output based Timoshenko smart beam. Further, this mathematical model is used to design a multirate output feedback based discrete sliding mode controller using Bartoszewicz law to suppress the flexural vibrations. The first 2 dominant vibratory modes is retained. Here, an application of the discrete sliding mode control in smart systems is presented. The algorithm uses a fast output sampling based sliding mode control strategy that would avoid the use of switching in the control input and hence avoids chattering. This method does not need the measurement of the system states for feedback as it makes use of only the output samples for designing the controller. Thus, this methodology is more practical and easy to implement.

**Keywords:**
Smart structure,
Timoshenko beam theory,
Discretesliding mode control,
Bartoszewicz law,
Finite Element Method,
State space model,
Vibration control,
Mathematical model,
SISO.

##### 761 Effect of Impact Location upon Sub-Impacts between Beam and Block

**Authors:**
T. F. Jin,
X. C. Yin,
P. B. Qian

**Abstract:**

**Keywords:**
Beam,
sub-impact,
substructure,
elastic-plasticity.

##### 760 Effect of Damping on Performance of Magnetostrictive Vibration Energy Harvester

**Authors:**
Mojtaba Ghodsi,
Hamidreza Ziaifar,
Morteza Mohammadzaheri,
Payam Soltani

**Abstract:**

This article presents an analytical model to estimate the harvested power from a Magnetostrictive cantilevered beam with tip excitation. Furthermore, the effects of internal and external damping on harvested power are investigated. The magnetostrictive material in this harvester is Galfenol. In comparison to other popular smart materials like Terfenol-D, Galfenol has higher strength and machinability. In this article, first, a mechanical model of the Euler-Bernoulli beam is employed to calculate the deflection of the harvester. Then, the magneto-mechanical equation of Galfenol is combined with Faraday's law to calculate the generated voltage of the Magnetostrictive cantilevered beam harvester. Finally, the beam model is incorporated in the aforementioned combination. The results show that a 30×8.5×1 mm Galfenol cantilever beam harvester with 80 turn pickup coil can generate up to 3.7 mV and 9 mW. Furthermore, sensitivity analysis made by Response Surface Method (RSM) shows that the harvested power is only sensitive to the internal damping coefficient.

**Keywords:**
Internal damping coefficient,
external damping coefficient,
Euler-Bernoulli,
energy harvester,
Galfenol,
magnetostrictive,
response surface method.

##### 759 2-D Ablated Plasma Production Process for Pulsed Ion Beam-Solid Target Interaction

**Authors:**
Thanat Rungsirathana,
Vorathit Rungsetthaphat,
Shogo Azuma,
Nobuhiro Harada

**Abstract:**

This paper presents a 2-D hydrodynamic model of the ablated plasma when irradiating a 50 μm Al solid target with a single pulsed ion beam. The Lagrange method is used to solve the moving fluid for the ablated plasma production and formation mechanism. In the calculations, a 10-ns-single-pulsed of ion beam with a total energy density of 120 J/cm2, is used. The results show that the ablated plasma was formed after 2 ns of ion beam irradiation and it started to expand right after 4-6 ns. In addition, the 2-D model give a better understanding of pulsed ion beam-solid target ablated plasma production and expansion process clearer.

**Keywords:**
Ablated plasma,
pulse ion beam,
thin foil solid target,
two-dimensional model

##### 758 Investigation on Adjustable Mirror Bender Using Light Beam Size

**Authors:**
A. Oonsivilai,
A. Suthummapiwat,
P.Songsiritthigul

**Abstract:**

In this research, the use of light beam size to design the adjustable mirror bender is presented. The focused beam line characterized by its size towards the synchrotron light beam line is investigated. The COSMOSWorks is used in all simulation components of curvature adjustment system to analyze in finite element method. The results based on simulation covers the use of applied forces during adjustment of the mirror radius are presented.

**Keywords:**
Light beam-line,
mirror bender,
synchrotron light machine.

##### 757 Modeling and Control of Two Manipulators Handling a Flexible Beam

**Authors:**
Amer S. Al-Yahmadi,
T.C. Hsia

**Abstract:**

**Keywords:**
Sliding mode control,
cooperative
manipulators.

##### 756 Comparative Finite Element Simulation of Nonlinear Vibrations and Sensor Output Voltage of Smart Piezolaminated Structures

**Authors:**
Ruediger Schmidt,
Thang Duy Vu

**Abstract:**

Two geometrically nonlinear plate theories, based either on first- or third-order transverse shear deformation theory are used for finite element modeling and simulation of the transient response of smart structures incorporating piezoelectric layers. In particular the time histories of nonlinear vibrations and sensor voltage output of a thin beam with a piezoelectric patch bonded to the surface due to an applied step force are studied.

**Keywords:**
Nonlinear vibrations,
piezoelectric patches,
sensor voltage output,
smart structures.

##### 755 Study on Distortion of Bi-Steel Concrete Beam

**Authors:**
G. W. Ni,
Y. M. Zhang,
D. L. Jiang,
J. N. Chen,
X. G. Wang

**Abstract:**

**Keywords:**
Bi-steel,
concrete beam,
crack,
rigidity.

##### 754 Simulation of Propagation of Cos-Gaussian Beam in Strongly Nonlocal Nonlinear Media Using Paraxial Group Transformation

**Authors:**
A. Keshavarz,
Z. Roosta

**Abstract:**

In this paper, propagation of cos-Gaussian beam in strongly nonlocal nonlinear media has been stimulated by using paraxial group transformation. At first, cos-Gaussian beam, nonlocal nonlinear media, critical power, transfer matrix, and paraxial group transformation are introduced. Then, the propagation of the cos-Gaussian beam in strongly nonlocal nonlinear media is simulated. Results show that beam propagation has periodic structure during self-focusing effect in this case. However, this simple method can be used for investigation of propagation of kinds of beams in ABCD optical media.

**Keywords:**
Paraxial group transformation,
nonlocal nonlinear media,
Cos-Gaussian beam,
ABCD law.

##### 753 Experimental Investigation on the Efficiency of Expanded Polystyrene Geofoam Post and Beam System in Protecting Lifelines

**Authors:**
Masood Abdollahi,
Seyed Naser Moghaddas Tafreshi

**Abstract:**

**Keywords:**
Beam deformation,
EPS block,
laboratory test,
post-beam system,
soil surface settlement.

##### 752 Probing Anomalous WW γ and WWZ Couplings with Polarized Electron Beam at the LHeC and FCC-Ep Collider

**Authors:**
I. Turk Cakir,
A. Senol,
A. T. Tasci,
O. Cakir

**Abstract:**

We study the anomalous WW*γ *and WWZ couplings by
calculating total cross sections of two processes at the LHeC with
electron beam energy Ee=140 GeV and the proton beam energy Ep=7
TeV, and at the FCC-ep collider with the polarized electron beam
energy Ee=80 GeV and the proton beam energy Ep=50 TeV. At the
LHeC with electron beam polarization, we obtain the results for the
difference of upper and lower bounds as (0.975, 0.118) and (0.285,
0.009) for the anomalous (*Δκγ*, *λγ*) and (*Δκ*z, *λ*z) couplings,
respectively. As for FCC-ep collider, these bounds are obtained as
(1.101, 0.065) and (0.320, 0.002) at an integrated luminosity of
Lint=100 fb^-1.

**Keywords:**
Anomalous Couplings,
Future Circular Collider,
Large Hadron electron Collider,
W-boson and Z-boson.

##### 751 Thermal Cracking Respone of Reinforced Concrete Beam to Gradient Temperature

**Authors:**
L. Dahmani,
M.Kouane

**Abstract:**

**Keywords:**
Cracking,
Gradient Temperature,
Reinforced Concrete beam,
Thermo-mechanical analysis.