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This paper describes the target detection and tracking architecture used by the Georgia Tech Aerial Robotics team for the American Helicopter Society (AHS) Micro Aerial Vehicle (MAV) challenge. The vision system described enables vision-aided navigation with additional abilities such as target detection and tracking all performed onboard the vehicles computer. The author suggests a robust target tracking...
In this work, we evaluate the performance ofthree routing protocols epidemic, sprayandwait and maxpropin Vehicular Delay Tolerant Networks (VDTNs). We study theimpact of vehicles density and ttl on the network performance. The simulations are conducted with the Opportunistic NetworkEnvironment (ONE) simulator. The performance is analyzedusing delivery probability, overhead ratio, average latencyand...
In this paper, we present a distributive target-centric formation controller with saturated control action for multiple unmanned aerial vehicles (UAVs). The desired target-centric formation is maintained using consensus protocol. We show that if there exists at least one vehicle in the group of agents who has the complete target information and corresponding communication graph is connected, then...
Competitive advantage of a firm is usually reflected through its superiority in production resources and performance outcomes. In order to achieve high performance (e.g., productivity) and significantly improve product quality, major US industries have promoted and implemented Robust Design (RD) techniques during the last decade. RD is a cost-effective procedure for determining the optimal settings...
Coreless substrate was popularized to develop for Enhanced Package on Package (ePoP) series package to effectively shrink package thickness and provide higher electrical performance. Therefore, in order to achieve those targets, Embedded Trace Substrate (ETS) coreless substrate was approached on bottom FCCSP package of ePoP structure. However, the warpage performance is the critical challenge for...
To analyze and predict a behavior of large-scale traffics with what-if simulation, it needs to repeat many times with various patterns of what-if scenarios. In this paper, we propose new techniques to efficiently repeat what-if simulation tasks with exact-differential simulation. The paper consists of two main efforts: what-if scenario filtering and exact-differential cloning. The what-if scenario...
Vehicular networks reflect user mobility behavior and present complex microscopic and macroscopic mobility patterns. Microscopic mobility is often simplified in macroscopic systems and we argue that its impact is too largely neglected. Notwithstanding improvements in realistically modeling and predicting mobility, few vehicular traces - especially complex microscopic ones - are available to validate...
There are many topologies of solar charging station for electric vehicles, using DC or AC current to charge, which increases the uses of DC-DC and DC-AC converters. The main idea of this article is to reduce the number of DC-DC converters in an AC charging station. In the light of this vision, this work proposes a topology with their managing unit. To this end, the operating characteristics and performance...
In recent years, substantial research efforts have been invested by industry and academia into the development of narrow tilting three wheeled vehicle technology as a viable alternative to four and two wheel vehicles for personal mobility. But there are challenges in order to make such vehicles safe, comfortable and acceptable to consumers. In this paper, a mathematical model of an electric narrow...
A toll plaza consists of several parallel counters and an incoming driver selects a lane that minimizes waiting time. This lane selection decision is often based on intelligent on-the-spot analysis of the physical length and the number of vehicles in each counter. Capturing such a lane selection behavior is important while designing a toll plaza as conventional queue selection rules do not mimic the...
Traffic congestion on multi-lane roadway has been a global issue recently. Numerous control strategies have been proposed to mitigate the traffic congestion. This paper introduced an improved control model that integrated both ramp and mainstream on multi-lane roadways. The basic model proposed by Papa Georgiou was firstly introduced, and then the improved control model taking both ramp and mainstream...
Aggregators in smart grid are business operators providing services to aggregate and visualize electricity information, balance demand and supply, reduce energy consumption, and do the other activities with Energy Management Systems (EMSs). An aggregator for Apartment Building Energy Management Systems (Apartment-BEMSs) balances demand and supply considering all households in its building. The buildings...
Hovering autonomous underwater vehicle (HAUV) play an important role in short distance underwater inspection mission. There are a lot of disturbances and uncertainties underwater, a robust control is needed to minimize the effects of external influences on HAUV's system behaviour, subjects to the constraint of not having a complete representation of the HAUV system. This paper describes the development...
Emotions and stress play a significant role in the genesis of car accidents and it is believed that the immediate history of an accident is characterized by conditions such as anxiety, nervousness, distraction or similar emotions. This paper briefly describes how the Transportation Informatics Research Group at the University of Klagenfurt uses biometric devices to measure physiological signals, which...
In view of the precise trajectory tracking control problem for unmanned aerial vehicle (UAV), a control method combined nonlinear path-following guidance law with active disturbance rejection control (ADRC) is proposed in this paper. The method consists of outer trajectory control loop and inner attitude control loop. An improved nonlinear path-following guidance method is used in designing the trajectory...
In this paper, analyses on the design of the underwater track vehicle (UTV) with ladder trencher for cutting underwater soils are conducted. For this, with the mechanics of the underwater ladder trencher are analyzed. Also, the forces of single cutting tools of ladder trencher in relation with force interaction to. Tractive thrust and normal reaction are analyzed and used to assess the traction, weight...
In this paper, the mathematical model of an electric vehicle, as well as the control system for avoiding pedestrians in urban traffic is described. The vehicle is modeled as a continuous system consisting of several subsystems. The discrete model of several sensors and actuators, a decision system, and low-level controllers for acceleration/braking and steering systems are added. Based on this model,...
We present results from a simulation study, which was designed for investigating the potential positive impacts, i.e., The invoicing and processing time, and financial savings, when using an electronic waybill instead of paper waybills for road-based freight transportation. The simulation model is implemented in an experiment for three different scenarios, where the processing time for waybills at...
Cooperative driving systems are a possible solution to improve traffic efficiency, road safety and even reduce the emission of pollutants, but there are several problems relating to aspects of safety, cost, duration and feasibility that slow down the development and experiments. In this context, simulation tools are essential to help researchers on this development. The goal of this paper is to present...
This paper presents a model of battery powered electric vehicle with computer algorithm for calculation of optimal energy components. The goal of the research was to create a system which can optimize the vehicle battery and motor for the given driving cycle thus minimizing equipment expenses. Furthermore, paper describes tested vehicle, vehicle components modelling, measurement acquisition process,...
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