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.
This paper describes the approach taken by the team from the Robotic Intelligence Laboratory at Jaume I University to the Amazon Robotics Challenge 2017. The goal of the challenge is to automate pick and place operations in unstructured environments, specifically the shelves in an Amazon warehouse. RobInLab's approach is based on a Baxter Research robot and a customized storage system. The system's...
This paper proposes an analytical method to quantify the effects of current and position sensor errors on torque ripple of a switched reluctance machine (SRM). First, an instantaneous torque equation for SRM is derived using the Fourier series representation. Then, analytical models are developed to describe the non-idealities of current and position sensors in the drive system. The electromagnetic...
Sediment microbial fuel cells(SMFCs) are considered an alternative renewable power source for remote environmental monitoring. Maximum power point tracking is very important in MFC energy harvesting system. A novel maximum power point tracking method with a zoned approach is proposed to achieve the goal of fast tracking maximum power point. Simulation results by Matlab/Simulink software show that...
The scalable and massively parallel computing systems composed of many processors, which are connected on chips that will become more and more complex and unreliable. This paper presents a bio-inspired error tolerance framework and three design principles based on the Autonomous Error Tolerant (AET) architecture. A nearby error perception mechanism is carefully designed to detect faults and an initiative...
Formal methods help in coping with the growing functionality and complexity, time-to-market and costs in cyber-physical systems (CPSs). Supervisory control synthesis (SCS) is such a method. It can be used to synthesize a controller for a CPS from the uncontrolled system model (plant) and the specification model (requirements). While SCS is an active research topic, reports on industrial applications...
This paper considers Terahertz (THz) sensing of contents on a single-layer object with time-domain spectroscopy (TDS) in a reflection mode. With an extremely small pulse width, the THz-TDS sensing is highly sensitive to non-ideal configurations such as a tilted or uneven sample, depth variation due to mechanical scanning operations, and intra-layer reflections. One consequence is sweep distortion...
As a new method of the Internet of Things (IoT), the mobile crowdsensing provides a novel way to realize the ubiquitous social perception. From the point of the game theory, this paper addresses the reputation incentive mechanism and discusses the prisoner's dilemma in the mobile crowdsensing. Firstly, we give a formal definition of the sensing user's contribution based on the accuracy in data analysis,...
In recent years, the science of hyperspectral remote sensing has huge development in virtue of the integration of low-cost lightweight hyperspectral sensors and unmanned aerial vehicles (UAVs). As an alternative of manned aircraft, UAV has some unique advantages enabling the researchers acquire the hyperspectral images of their interest area flexibly and promptly. This review focuses on the recent...
To facilitate understanding of the relationship between the most significant greenhouse gas carbon dioxide and human activities, we have developed a differential absorption lidar (DIAL) detection system at 1.57 μm. The goal of this lidar system is to detect the temporal and spatial distribution of atmospheric carbon dioxide gas from 0.3 km to 3 km in the atmosphere. Beginning in 2009, the system was...
In this study, a spectrum allocation algorithm is proposed to reduce the cost and the packets loss rate in the communications between the utility company and the consumers. We establish a cost model based on spectrum allocation in smart grid. Specifically, the subbands are allocated to different data aggregator units (DAUs) according to the confidence level and the maximum cost requirements. The maximum...
This paper investigates the event-triggered and self-triggered state feedback control problem of networked control systems(NCSs) with short network-induced delays. The proposed switched system modeling method is able to describe the uncertainty and the time-varying characteristics of the network-induced delays well. In this paper, for NCSs with short network-induced delays, we co-design the event-triggered...
The wireless sensors deployed at the highway can ensure the safety of the traveling vehicles. However, the ribbon deployed wireless sensor network in the roadside infrastructure can easily to generate energy hole. Cooperative communication between sensors and vehicles is an effective way to improve this situation and reduce the energy consumption of the sensors. A cooperative relay selection algorithm...
The lifetime of Wireless Sensor Networks (WSNs) is significantly shortened by the energy hole problem that is caused by the many-to-one communication pattern adopted by most WSNs. Various approaches have been designed to solve the energy hole problem, and this paper considers improving the energy efficiency by deploying additional relays, which is called the Lifetime Constrained Relay Node Placement...
To optimize the classic design trade-off between EMI noise and power efficiency in GaN power drivers at 10MHz and beyond, a closed-loop adaptive Miller Plateau sensing (AMPS) technique is proposed. In order to mitigate long delays and low accuracy issues in conventional Miller Plateau (MP) sensing approaches, an emulated MP tracking (EMPT) technique is adopted to achieve instant MP start point sensing...
Each year, millions of motor vehicle traffic accidents all over the world cause a large number of fatalities, injuries and significant material loss. Automated Driving (AD) has potential to drastically reduce such accidents. In this work, we focus on the technical challenges that arise from AD in urban environments. We present the overall architecture of an AD system and describe in detail the perception...
To optimize the classic design trade-off between EMI noise and power efficiency in GaN power drivers at 10MHz and beyond, a closed-loop adaptive Miller Plateau sensing (AMPS) technique is proposed. In order to mitigate long delays and low accuracy issues in conventional Miller Plateau (MP) sensing approaches, an emulated MP tracking (EMPT) technique is adopted to achieve instant MP start point sensing...
Recently, there have been a large number of proposals for IoT middleware solutions. In addition, a few recent studies have surveyed and qualitatively evaluated these IoT middleware proposals against functional and non-functional features. A quantitative evaluation is also needed to complement these existing qualitative studies and provide a more in-depth perspective of the state of the art. This paper...
Nowadays, wideband spectrum sensing, as one of the vital technologies of cognitive radio (CR), has the potential to find more temporarily available frequency bands to meet the growing demands of wireless services. As the vast number of samples are required to be collected and processed, traditional wideband spectrum sensing methods become inefficient and cause large energy consumption. Therefore,...
We report a laser-ablation aided, direct-write fabrication technique that could convert non-conductive paper rinsed with metal ions and polymer solution into conductive metal carbide and graphene with a typical sheet resistance of 45.3 Ω/□. As fabricated paper electronics inherit the microfiber network from paper and have nanoscale pores and 2D metal carbide flakes due to the laser ablation process...
In this paper, a novel technology is presented in which organic substrate manufacturing is used to create sensors and actuators directly in the CPU package. The dielectric material surrounding some interconnect traces in the substrate is removed, allowing those traces to act as sensors and actuators, while the CPU itself is used for signal processing and conditioning. To demonstrate proof of concept,...
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.