The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Model reference adaptive system (MRAS) is one of the popular methods to observe the speed and the angle information of the Permanent magnet synchronous motor (PMSM). This paper proposes a new adaptation scheme for MRAS to replace the conventional PI controller based on Popov Hyperstability theorem. In this project, the speed of PMSM is controlled by using field oriented control (FOC) method and the...
This paper describes the importance of having a backchannel communication link between a microstimulator ASIC and an external control unit for complete safety closure and closed-loop power management. An example of the overall microstimulation system with backchannel communication link for an epiretinal implant is provided. Additionally, the backchannel operation and protocol between the implant chip...
Retinal images are obtained using a fundus camera in order to evaluate many important diseases such as Diabetic Retinopathy and Glaucoma. Sometimes, the images appear as uniformly illuminated, have luminosity and contrast variability. This problem can be severely compromised the diagnostic process and the results, especially if automated computer-based procedure is used to derive the parameters of...
Mobile Ad hoc Networks are being adopted in more and more applications in our daily life. Mobile computing and mobile ad hoc networks in particular have become a daily need. As mobile ad hoc networks have been target for many attacks, the security of these networks has become an essential part of their existence. This paper provides a review of the current threats and how these threats are mitigated...
This paper aims at explaining the architecture of the AEMB and optimizing its threading model. AEMB is a soft core, open source processor designed for FPGA implementation. AEMB uses a fine grained model that interleaves threads one instruction at a time with separate register sets for each thread. The chosen optimization is to change the current threading model to a Coarse-grained that switches threads...
Vegetation encroachment under overhead high voltage power line and its monitoring is a challenging problem for electricity distribution companies. Blackout can occurs if proper monitoring of vegetation is not done. The uninterrupted electric power supply is vital for industries, businesses, and daily life. Therefore, it is mandatory for electricity companies to monitor the vegetation/trees near power...
Damping ratio is usually needed for structure dynamics analysis. To improve the accuracy of damping ratio estimation and make it benefit for engineering application has been a difficult problem. A new method for the estimation of damping ratio which is necessary for structure dynamics analysis is presented. Under-damped free vibration response and damped exponential signals have the same expression...
In this paper, broadband inverted suspended linear polarized antennas with operating frequency at 2.4GHz for Wireless Local Area Network (WLAN) application are designed. Various shapes of slot are added on the inverted suspended rectangular patch to investigate the effect of the antenna performance. The antennas are designed by using L-probe amendment with inverted suspended rectangular patch, where...
This paper proposes a post-stroke rehabilitation system for hemiparetic-arm based on the application of tilt sensors. The study focuses on designing, developing and simulating the results. The result is documented for the purpose of post-processing and progressive status tracking. The subject needs to wear a set of sensors over the palm while performing a few basics arm movement. The data will be...
This paper discusses about an ongoing project that serves the needs of people with physical disabilities at home. It uses the Bluetooth technology to establish communication between user's Smartphone and controller board. The prototype support manual controlling and microcontroller controlling to lock and unlock home door. By connecting the circuit with a relay board and connection to the Arduino...
Existing tilt sensors used in slope movement monitoring are capable of detecting tilt along a single plane. Multiple sensors are required to detect tilt along two or more plane. In this work, a preliminary design of a novel tilt sensor based on the moiré concept has been designed and developed for sensing tilt movement in any arbitrary plane. The sensor comprises two circular gratings mounted inside...
In segmentation process, non-uniform illumination problem can affect the segmentation result. In this paper, a new method is proposed to solve the problem based on double mean filtering. By applying a combination between mean and threshold value, the varying background is normalized. This proposed method had been experimented with a few badly illuminated images and the result is evaluated by using...
Magnetic Resonance Image is one of the technologies used for diagnosing brain cancer. Radiographers use the information obtained from MRI images to diagnose the disease and plan further treatment for the patient. MRI images are always corrupted with noise. Removing noise from images is crucial but it is not an easy task. Filtering algorithm is the most common method used to remove noise. A segmentation...
Efficient data dissemination is a key of successful Vehicular Ad Hoc Networks (VANETs) applications. In VANETs, one of the main challenges is how to overcome the intermittent vehicle-to-vehicle connectivity problem. Secondly, how to increase the connecting possibility in the sparse environment (during off peak hour, highway etc.). Placing Road Side Units (RSUs) along roadside acting as a buffer point,...
Studies of medical image segmentation have long been done as a mean to distinguish object region from one to another for further image analysis. The segmentation of lung region in chest X-ray (CXR) based on object edge detection is one of the popular method applied. Early edge detection algorithms like Sobel, Prewitt and Laplacian have been used to segment the lung however, none of them can successfully...
The design of the code is an important issue in an OCDMA systems, in which it can be constructed in one dimension or multi-dimensions. The two dimensional (2-D) code provides high spectral density and large number of subscribers. In this paper a literature review on noncoherent 2-D code families of OCDMA system is presented. The 2-D code is constructed by spreading the optical pulses in two dimensions...
This paper presents the implementation of Just-in-Time (JIT) approach in production systems, which plays a significant role in minimising costs and performances of products and services supplied to the global marketplace. However, there are many potential risks that cause significant disruptions to all supply chain members. In this paper, a genetic algorithm model is developed for simultaneously reducing...
The Advanced On-Chip Variation (AOCV) model is used to systematically correct Liberty timing file for on-chip variation (OCV) based on the logic depth and distance of a path. The AOCV analysis solutions can be categorized into graph-based (GBA) and path-based analysis (PBA), which are refinement strategies over traditional OCV in static timing analysis. PBA AOCV performs recalculation on critical...
In this paper, an affordable low specification 16-bit photon counting system has been prototyped. This is to overcome the high cost equipments which are design for broad applications., This system is developed specifically for the measurement of spectral delayed luminescence of saliva and is able to communicate with PC through USB port. Schematics of the systems are described in detail followed by...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.