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Mobile phones are commonly used by web servers to validate user's identification and authentication. It enhances user's trust in online transactions and empowers him to use his mobile phone network as an additional layer of security. This mechanism is known as Mobile Transaction Authentication Number System (mTAN) which is used by e-banks and social media sites. This system has some weakness and users...
In this paper a robust Model Predictive Controller (MPC) is designed for direct drive electro-hydraulic position servo system in presence of unknown dynamics and uncertain nonlinearities. While considering the nonlinearity of dead zone and also the saturation in direct drive electro-hydraulic servo system, the PID controller suffers from problem of poor robustness and also adaptability. In MPC control...
In this paper we use Ziegler-Nichols tuning method for tuning of a Proportional-Integral (P-I) and Integral-Proportional (I-P) controller for a DC motor to control its speed. P-I controller is the most common controller used for speed control of D.C motor. However P-I controller has some disadvantages like high overshoots and sensitivity to controller gains. Therefore to overcome these disadvantages,...
The term “Internet of Things” (IoT) refers to the expansion of Internet technologies to include smart objects by extensive deployment of exclusively identifiable distributed communication devices. The management of configuration in these devices, in particular, is a challenge due to the high heterogeneity in different communication protocols, communication sequences, and processing capabilities. We...
In these days, three degree of freedom (3DOF) cranes are considered as backbone in most of industries. It is mostly used for picking and placing of heavy objects from one place to another place. The common part in mostly cranes is jib system. Two main tasks of jib system are movement of the trolley and loading/unloading of the payload. The safety of crane mostly depends upon these sub tasks. In most...
This paper presents the design of multi and wide band frequency reconfigurable monopole antenna, using FR4 as a substrate with thickness of 1.6mm. The radiating element is printed on a truncated metallic ground plane. The antenna works in a single-band and two dual-band modes using two switches. The single-band (WiMAX at 3.45GHz) mode is obtained when both switches (SW1 and SW2) are in OFF state....
Optimization is a mathematical technique that concerns the finding of maxima or minima of functions in some feasible region. There is no business or industry which is not involved in solving optimization problems. A variety of optimization techniques compete for the best solution. Economic Dispatch (ED) is also one of the optimization problem. ED is the process of determining optimal output of available...
In this paper, least mean square (LMS) adaptive filter and its several variants are used to remove the noise in degraded electrocardiographic (ECG) signals. One of the main interference sources in measurement of ECG signal includes 50 Hz power line that produces distortion in the original signal while measuring. Recently, adaptive filtering is supposed to be one of the most popular and effective methods...
Design patterns and their variants detection from source code using different techniques and tools are keys to understand complex architecture of different applications. Design patterns are key to develop quality applications and well know solutions to well know problems. The discussion is on accuracy of existing techniques and tools is debatable because of multiple advanced technologies and a lot...
This paper is about designing Microstrip Patch Antenna with wearable Substrate with additional EBG structure for better gain to be operated in ISM band (2.4 GHz). A Wearable substrate is used in textile garments so this antenna structure is designed specifically for wearing garments, that's why SAR (Specific Absorption Rate) has been measured in this paper. For designing EBG structure help in improving...
In the modern era of automotive industry, Active Front Steering (AFS) control is in hot pursuit due to its increased inbuilt vehicle maneuverability, reduced risk of instability and thereby significant reduction in number of accident occurrences. In this paper, a novel control strategy of Model Predictive Controller (MPC) with robust Optimal Guaranteed Cost Controller (OGCC) is introduced for AFS...
With the increased popularity of touch screen mobile phones, touch gesture behavior is becoming more and more important. Due to increasing demand for safer access in touch screen mobile phones, old strategies like pins, tokens, or passwords have failed to stay abreast of the challenges. However, we study user authentication scheme based on these touch dynamics features for accurate user authentication...
Orthogonal frequency division multiplexing (OFDM), because of its different advantages, has been proposed as the enabling modulation technology for cognitive radios. However, the high sidelobes of the subcarriers are a major disadvantage that result in out-of-band radiation (OOB) causing interference to adjacent licensed users. Subcarrier weighting is an efficient technique for suppressing these sidelobes...
As most of the electronic appliances use DC power so improvement in AC-DC converter is always at large by the researchers. The factors of improvement of power quality are reduction in total harmonic distortion and improvement in power factor at input ac, and tight output dc regulation. In such context, the AC-DC boost converters have gained significant importance, especially when they are used in...
A hovercraft can move on any rough surface or water, it uses propulsion force of air and is supported by cushion that has high compressed air in it. Hovercraft is suitable for many military and ordinary purposes. In this paper a LQR controller is designed for hovercraft. The performance of LQR depends upon selection of Q and R matrix the optimal value of Q and R is found using genetic algorithm with...
This paper presents a novel electromagnetic-based bridge energy harvester (EBEH) utilizing bridge vibrations and ambient wind to harvest energy for wireless sensor nodes (WSNs) used for monitoring the health of bridges. The architecture, working principle, fabrication and characterization of the harvester is discussed. The harvester consists of a fixed wound coil, a permanent magnet, an airfoil, a...
In this work, a self-generated power capacitance measurement circuit for wireless health monitoring system is proposed. Hybrid energy from thermal and solar energy is expected to be used to supply the energy harvester. The present results has shown using low cost, off-the-shelf components, the capacitance measurement circuit is able to sense a linear capacitance range of 9.8 – 10.35 pF over 1.478...
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