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.
The ever-increasing variety of services built on top of the Controller Area Network (CAN), along with the recent discovery of vulnerabilities in CAN-based automotive systems (some of them demonstrated in practice), stimulated a renewed attention to security-oriented enhancements of the CAN protocol. The issue is further compounded nowadays because, unlike in the past, security can no longer be enforced...
This paper introduces new functionalities for industrial safety applications using the wireless infrastructure of the IEEE 802.11 standard. The new amendments (n/ac/ad) for the 2.4, 5, and 60-GHz-band support additional high data rate modes, for e.g. video applications and device-to-device (D2D) communication. The huge bandwidth in the 60-GHz-band enables precise localization. However, Listen-Before-Talk...
Augmented Reality (AR) introduces vast opportunities to the industry in terms of time and therefore cost reduction when utilized in various tasks. The biggest obstacle for a comprehensive deployment of mobile AR is that current devices still leave much to be desired concerning computational and graphical performance. To improve this situation in this paper we introduce an AR Edge Computing architecture...
Many applications for machine-to-machine (M2M) communications are characterized by large numbers of devices with sporadic transmissions and subjected to low energy budgets. This work addresses the importance of energy consumption by proposing a new Medium Access Control (MAC) mechanism for improving the energy efficiency of IEEE 802.11ah, a standard targeting M2M communication. We propose to use the...
A technique of switched stator is employed in a radial Flux BLDC motor to improve the energy efficiency of an electric vehicle. Electric vehicle (EV) certainly, shall be a replacement to the gasoline engine vehicles in near future considering environment protection inadequacy of fuels. This concept is arrived for in wheel direct drive for a two wheeler which doesn't have any transmission mechanism...
In this paper, a new cyber-attack is proposed for distributed systems, while detection of such an attack is recommended based on H-infinity filtering. In particular, we study the effect of a specific attack on the communication links between local control centers. Today's cyber-physical systems are complex and large scale, so that they are distributed over a large area. Using distributed control and...
This paper proposes a new observer gain tuning methodology to achieve a robust position control. The state observer is often used to estimate the state of the system. Generally, the observer gain is tuned by an evaluation function and the operator needs to arbitrarily select a weight function to obtain an optimal observer gain. This paper introduces a methodology for observer gain tuning using the...
In this paper, we present a theoretical and experimental study about the carrying capacity of flight dielectric elastomer (DE) balloon in electromechanical performance. This paper deals with some structures which are consist of helium balloons or air balloons based on theoretical analysis. We compared the two kinds of gas balloons at the same initial pressure, air and helium, there was no great difference...
This paper studies a motor synchronization problem under input saturations. We propose the PI consensus-based synchronization algorithm. Then, applying the integral-type Lyapunov function, we drive that the multiple motors are synchronized in the presence of input saturations. Moreover, the anti-windup technique is applied to improve the performance, and the asymptotic convergence of speed errors...
This paper proposes a contact force control system for a dual-rotor helicopter. Force control of a helicopter allows for achieving aerial tasks that include contact motions with objects. Although one-degree-of-freedom force control systems have been already developed, multi-degree-of-freedom systems have not been achieved yet. Therefore, in this paper, a force control system for a dual-rotor helicopter...
Banknote recognition system is the focus of different image processing and pattern recognition research. With the improvement in modern-day banking operations, automated systems for banknote recognition have become pertinent. Recognition of banknotes is a challenging task as banknotes can suffer from defects and images get distorted during acquisition, which raises the need for a robust recognition...
In the fields of remote sensing image processing, hyperspectral image (HSI) classification is a hot topic, which involves computer graphics, statistics, matrix theory and other disciplines. In this study, we prefer to use machine learning classification algorithm (supervised learning or unsupervised learning) to predict under the context of HSI classification. Recently, sparse representation based...
This paper proposes a novel learning-based image super-resolution via a weighted random forest model (SWRF). The proposed method uses the LR-HR training data to train a random forest model. The underlying idea of this approach is to use several decision trees to classify the training data based on a simple splitting threshold value at each class. A linear regression model is learnt to map the relationship...
This paper presents two practical simulators of a traveling mobile robot that is equipped with optical mice and the optimal setting of their controllable parameters. It is assumed that three optical mice are installed at the bottom of a mobile robot, from which the traveling velocity of a mobile robot can be estimated. First, taking structural simplicity and user convenience into account, two practical...
The visual servoing based pickup of stationary objects (or regulation, etc.) has attracted many academic researchers and industrial engineers over the past two decades, and numerous control strategies are proposed for this challenging problem. The controller proposed in this paper follows the Position Based Visual Servoing (PBVS) paradigm. Most of the PBVS controllers, if not all, are designed assuming...
An interactive graphical method of design is proposed in order to design a system which is robust and ultrafast. The aim will be to design a compensator with specific sensitivity bound ε on a given bandwidth while not exceeding a global sensitivity value M at all frequencies. The Geogebra program allows to adjust the compensator so that the open loop Nyquist plot is tangential to the M sensitivity...
This paper is concerned with the problem of designing a robust adaptive control strategy for flexible joint robots (FJR). Under the assumption of weak joint elasticity, FJR is firstly modeled and converted into singular perturbation form. The control law consists of a FAT-based adaptive control strategy and a simple correction term are then used to stability of the slow dynamics, and damp out the...
In this paper, we consider the event triggered control of the singularly perturbed linear system, where the communication between sensor and the controller/actuator is through a digital communication network and the transmission is based on some state dependent criterion. The models of slow and fast subsystems of the plant are added at the controller and are used for the estimation of states between...
This paper deals with coefficient of performance (COP) maximization of automotive R744 heat pump using Nelder-Mead simplex method. The COP maximum is searched using high-side pressure adjustment, what is possible and necessary during transcritical operation. Selected approach allows efficient heat pump operation, fast COP maximum localization, minimum number of needed actuator changes and resistance...
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.