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This paper presents the empirical relationships between various types of noises and the audio performances of various types of dithering systems based on extensive computer numerical simulations. There are two types of dithering systems. They are the subtractive dithering systems and the nonsubtractive dithering systems. For the subtractive dithering systems, artificial noises are added before and...
Wireless Sensor Network is an emerging technology that is nowadays adopted in a wide range of applications. In this context, with the recent advancement in the microelectronics, communication and computation, smart and wearable wireless sensors are increasingly getting popular due to the low-cost and easy deployment. In this paper, a review of the main applications of the smart and wearable sensors...
In Smart Wearable Systems (SWS), the wearable devices are powered by batteries with very limited energy available. These emergent systems have strong Quality of Service (QoS) requirements, with focus on reliable communication and low power consumption. This is the scope of the Baby Night Watch, a project developed in the context of the European Texas Instruments Innovation Challenge (TIIC) 2015. This...
This paper investigates terminal sliding mode control of the continuous Markovian jumping manipulator systems. The proposed sliding manifold is a nonsingular sliding mode. The time taken to reach the equilibrium from any initial state is finite. The control scheme can ensure the manipulator to track the desire trajectory. A numerical example is given to show the feasibility of the theoretical results.
It is important to evaluate gait motion on a walk in rehabilitation using the simple method. We have proposed two kinds of evaluation methods. One is the Gravity Center Fluctuation (GCF) obtained by the developed special shoes. The other is five element score method using the high speed camera, and is reliable to evaluate the functional recovery. In this paper, the score that the physical therapist...
This paper investigates the robust fault diagnosis problem for vehicle lateral dynamics, which play a key role in vehicle stability and driving safety. The proposed fault diagnosis system consists of two sub-systems: fault diagnosis observer and robust threshold. By treating faults as disturbances, Disturbance/Uncertainty Estimation technique is used as fault diagnosis observer to generate residuals...
The purposes of this study were to develop a high-speed milling system combined with an ablation path of the parallel lines and to investigate the cut quality on the glass substrates conducted by a nanosecond pulsed Nd:YVO4 laser (λ:355 nm). Experimental specimens were commercial Corning Gorilla glass with a thickness of 800 μm. Laser milling parameters including the laser fluence, number of milling...
A novel disturbance estimation approach is presented for a class of single-input-single-output (SISO) systems subjected to sinusoidal disturbance with unknown frequency, a new methodology is provided to estimate and reject the unknown sinusoidal disturbance via construction of virtual disturbance observer. At first, the disturbance in system input channel is decomposed into tow virtue sinusoidal signals...
The objective of this study was to obtain the optimal parameters for laser electrode patterning of indium-tinoxide (ITO) films coated on soda lime glass substrates; the parameters were determined through grey relational analysis. The electrode patterning parameters affecting the sheet resistance and optical transmittance of the film include the laser power, pulse repetition frequency, pulse duration,...
In most of the engineering disciplines, new systems are designed by reusing existing components that have been used in other systems. Software engineering has been more focused on original development but it is now recognized that to achieve better software, more quickly and at lower cost, we need to adopt a design process that is based on systematic software reuse. Development of different cloud...
Many kinds of open source software (OSS) are used to develop software or systems. In order to develop software using existing forms of OSS, developers have to understand them. However some OSS lacks adequate documentation for its source code. Program diagrams, many of which have been recently proposed, can enhance the understanding of software or systems but developers cannot properly understand these...
Service oriented architecture (SOA) is an architectural paradigm for building enterprise service applications that use services available in a cloud computing environment. In recent days, with the advancement of cloud computing the usage of Web Services has increased rapidly. Therefore, service discovery has become one of the essential challenging factors nowadays for the service consumers. This paper...
Data Warehouse is one of the powerful tools for analytical processing. XML on the other hand is widely used to handle data in web environment. XML to data warehouse integration is a subject of interest for the business organization to use the semi-structured XML for analytical processing. However, in this research work we approached the problem in reverse direction. Here we generate equivalent XML...
An embedded system often consists of two or more processors for efficient control of various devices in parallel. However, it is difficult to correctly design parallel software for such an embedded system because of unexpected interference among processors. It is using a formal method for the development of that system. Further more, power saving called Green IT is also an important issue in high...
In this paper, a mechanical model for a half-tracked vehicle with eight degrees of freedom is established. A scheme of active disturbance rejection control (ADRC) is first presented to control the vertical motion and pitching angle of the tracked vehicle. The inner parameters uncertainty and the external disturbances are estimated as the total disturbances by using extended state observer (ESO) and...
Simulation models have been used successfully to understand processes and to assist the formulation and evaluation of several systems. The general case is that the models are not well specified and documented. This peculiarity produces interoperability problems, such as: replicating tasks, wasting the potential of the simulation models and those systems that use them. Considering the above mentioned...
In order to improve image quality, unsharp masking (USM) is a great solution for image enhancement. To detect USM sharpening, we propose an improved method called edge perpendicular Gray coding (EPGC). With EPGC, the number of feature points generated from binary encoding can be reduced to half and thus the execution of calculating histogram can be accelerated. In addition, we use Otsu thresholding...
In this paper, we applied CSMA (Carrier Sense Multiple Access) with infrared communication on leader-follower robot system via hierarchical communication. We define a simple protocol for communication between robots in the system. A home security system with many security modules installed in a house and a group of leader-follower mobile robots in charge of patrolling and monitoring was simulated...
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