{"title":"An air traffic prediction model based on kernel density estimation","authors":"Yi Cao, Lingsong Zhang, Dengfeng Sun","doi":"10.1109/ACC.2013.6580831","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580831","url":null,"abstract":"This paper revisits a link transmission model that is designed for nationwide air traffic prediction. The prediction accuracy relies on the estimate of traversal time of each link, which is obtained through statistical analysis of historical trajectories. As the most straightforward approach, the average traversal time is often used in the model implementation. But the outliers inherent in the data samples can easily distort the estimate. To address this issue, this paper proposes to use the mode of the traversal times which corresponds to the value reaching the peak of the probability density function of data samples. The continuous probability density function is estimated using a non-parametric approach, kernel density estimation. As the mode is resistant to the outliers, using the mode to parameterize the link transmission model is a more robust approach. Simulations based on historical traffic data of three months show that, in comparison with the conventional mean approach, use of the kernel density estimation in the sector count prediction leads to a 6% reduction in modeling errors.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114205600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gökhan M. Atinç, D. Stipanović, P. Voulgaris, M. Karkoub
{"title":"Collision-free trajectory tracking while preserving connectivity in unicycle multi-agent systems","authors":"Gökhan M. Atinç, D. Stipanović, P. Voulgaris, M. Karkoub","doi":"10.1109/ACC.2013.6580680","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580680","url":null,"abstract":"In this paper we address a multi-objective control problem for a group of kinematic unicycle agents. Namely, we consider three objectives; trajectory tracking, collision avoidance, and connectivity maintenance. By integrating the gradients of the avoidance and connectivity functions into the desired orientations of agents, using Lyapunov-type analysis, we prove that agents track reference trajectories with bounded errors, while avoiding collisions and maintaining connectivity.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114231504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Open source autopilot for academic research - The Paparazzi system","authors":"B. Gati","doi":"10.1109/ACC.2013.6580045","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580045","url":null,"abstract":"Paparazzi is a free and open-source hardware and software project intended to create a flexible autopilot system for fixed-wing aircraft as well as multicopters by allowing and encouraging input from the community. In addition to the airborne hardware and software (from voltage regulators, IMU boards and GPS receivers to Kalman filtering code), the project includes an ever-expanding array of ground hardware and software including modems, antennas and a user-friendly ground control software interface with a simulation environment. The airborne software supports several microprocessor architectures and various hardware configurations. All hardware and software is open-source and freely available to anyone under the GNU licensing agreement. Currently, the Paparazzi project is developed mainly at ENAC University (Ecole Nationale de l'Aviation Civile) and the TU-Delft, but significant amount of work done by various open-source enthusiasts. The system has been used on dozens of airframes and implemented by several teams around the world. Thousands of hours of autonomous flight have been successfully achieved with the Paparazzi system on all continents including the Antarctic.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114343012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Control for large scale demand response of thermostatic loads*","authors":"L. Totu, J. Leth, R. Wisniewski","doi":"10.1109/ACC.2013.6580618","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580618","url":null,"abstract":"Demand response is an important Smart Grid concept that aims at facilitating the integration of volatile energy resources into the electricity grid. This paper considers a residential demand response scenario and specifically looks into the problem of managing a large number thermostat-based appliances with on/off operation. The objective is to reduce the consumption peak of a group of loads composed of both flexible and inflexible units. The power flexible units are the thermostat-based appliances. We discuss a centralized, model predictive approach and a distributed structure with a randomized dispatch strategy.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114364788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hybrid observer design for online battery state-of-charge estimation","authors":"J. LeSage, R. Longoria","doi":"10.1109/ACC.2013.6580128","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580128","url":null,"abstract":"This paper presents a method for estimating battery state-of-charge based on linear hybrid estimation theory. Contrasting with existing battery estimation techniques, hybrid linear models permit systematic introduction of additional dynamics online, which can capture cell aging or temperature effects. Piecewise regression with free-knots was employed to segment the nonlinear model into linear regions, enabling a decoupled hybrid observer scheme to independently identify the continuous and discrete hybrid states. Simulation and experimental studies demonstrate the observer efficacy.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114529356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synchronization of limit cycle oscillations in diffusively-coupled systems","authors":"S. Y. Shafi, M. Arcak, M. Jovanović","doi":"10.1109/ACC.2013.6580592","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580592","url":null,"abstract":"We present analytical and numerical conditions to verify whether limit cycle oscillations synchronize in diffusively coupled systems. We consider both compartmental ODE models, where each compartment represents a spatial domain of components interconnected through diffusion terms with like components in different compartments, and reaction-diffusion PDEs with Neumann boundary conditions. In both the discrete and continuous spatial domains, we assume the uncoupled dynamics are determined by a nonlinear system which admits an asymptotically stable limit cycle. The main contribution of the paper is a method to certify when the stable oscillatory trajectories of a diffusively coupled system are robust to diffusion, and to highlight cases where diffusion in fact leads to loss of spatial synchrony. We illustrate our results with a relaxation oscillator example.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116185744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SLUGS UAV: A flexible and versatile hardware/software platform for guidance navigation and control research","authors":"Mariano I. Lizárraga, G. Elkaim, R. Curry","doi":"10.1109/ACC.2013.6579913","DOIUrl":"https://doi.org/10.1109/ACC.2013.6579913","url":null,"abstract":"This paper presents the Santa Cruz Low-Cost UAV GNC Subsystem (SLUGS) developed at the University of California Santa Cruz. It is a versatile and flexible autopilot capable of controlling a small unmanned system. It is tightly integrated with MATLAB/Simulink, and allows for a simple and easy transition from pure simulation to HIL simulation to flight code. The hardware's main processing units are two low-cost dsPIC33F DSCs, one handling sensor input and the other managing the navigation and control loops. The sensor DSC implements a complementary attitude and position filter. An interprocessor communication protocol delivers fused attitude and position estimates to the control DSC. The control DSC implements low-level platform stabilization using PID loops, and higher level waypoint following based on a line-of-sight guidance law. Data is logged and available for replay post flight on both the ground station software, and also within MATLAB/Simulink. The hardware was installed on a low-cost single engine electric RC aircraft, and has been demonstrated to be capable of sustained autonomous flight. Several estimation topologies have been tested and developed using the system. The SLUGS is general, and can be adapted to multiple autonomous platforms such as helicopters, quadrotors, twin engine aircraft, ground, and marine surface vehicles.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121648435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A two-phase approach to stability of networks given in iISS framework: Utilization of a matrix-like criterion","authors":"H. Ito, Björn S. Rüffer","doi":"10.1109/ACC.2013.6580587","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580587","url":null,"abstract":"This article is concerned with global asymptotic stability (GAS) of dynamical networks. The case when subsystems are integral input-to-state stable (iISS) has been recognized as notoriously difficult to deal with in the literature. In fact, the lack of energy dissipation for large input denies direct application of the small-gain argument for input-to-state stable (ISS) subsystems. Here for networks consisting of iISS subsystems it is demonstrated that a two-phase approach allows us to make use of the ISS small-gain argument by separating a trajectory into a transient and a subsequent ISS-like phase. In contrast to the previous iISS results, the two-phase approach immediately leads to a sufficiency criterion for GAS of general nonlinear networks, which is given in a matrix-like form (order condition).","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121665778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recursive subspace identification approach of a closed-loop model","authors":"Jia Wang, Hong Gu, Hongwei Wang","doi":"10.1109/ACC.2013.6580076","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580076","url":null,"abstract":"A subspace model identification algorithm under closed-loop experimental condition is presented in this paper that can be implemented to recursively identify and update system model. A new updating scheme is developed to obtain the projected data matrix recursively through sliding window technique and linear equation. Based on the propagator type method in array signal processing, the subspace spanned by the column vectors of the extended observability matrix is estimated without singular values decomposition. The proposed method is feasible for the closed-loop system contaminated with colored noises. The numerical example shows the effectiveness of the proposed algorithm.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121766548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Jia, Anahita Mirtabatabaei, N. Friedkin, F. Bullo
{"title":"On the dynamics of influence networks via reflected appraisal","authors":"P. Jia, Anahita Mirtabatabaei, N. Friedkin, F. Bullo","doi":"10.1109/ACC.2013.6580007","DOIUrl":"https://doi.org/10.1109/ACC.2013.6580007","url":null,"abstract":"In any modern society, individuals interact to form opinions on various topics, including economic, political, and social aspects. Opinions evolve as the result of the continuous exchange of information among individuals where interpersonal influences play the key role. The study of influence network evolution has wide applications in the field of social organization and social psychology. A compelling model is Friedkin's reflected appraisal model where each individual's self-appraisal is set equal to the relative control and power that the agent exerted over prior issue outcomes. Motivated by this empirical framework, we (i) present a rigorous mathematical formulation of the reflected appraisal influence network dynamics, (ii) study the equilibria and the convergence properties of the dynamical influence systems, and (iii) construct the social conditions leading to the emergence of single opinion leaders, clusters of leaders, or diffuse and democratic power structures. In particular, an appropriately-defined eigenvector centrality of the influence network is proved to determine each individual's social power and self-appraisal evolution, and then determine the opinion formulation of the whole network.","PeriodicalId":145065,"journal":{"name":"2013 American Control Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124501393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}