1 Nonlinear Observers for Unicycle Robots with Range (2009)
Abstract — For nonlinear mobile systems equipped with exteroceptive sensors, the observability does not only depend on the initial conditions, but also on the control and the environment. This...
Input Tracking and Output Fusion for Linear Systems (2009)
Xiaoming Hu, Ulf T. Jönsson, Clyde F. Martin, Dedicated Prof, Anders Lindquist
In this paper, the input-output behavior of a linear stable system is studied from a geometric point of view. Based on these results, it is discussed how to choose an output and how to fuse a number...
Cooperative Surveillance Missions with Multiple Unmanned Ground Vehicles (UGVs) (2009)
David A. Anisi, Petter Ögren, Xiaoming Hu, Therese Lindskog
Abstract — This paper proposes an optimization based approach to multi-UGV surveillance. In particular, we formulate both the minimum time- and connectivity constrained surveillance problems, show...
Connectivity Constrained (2009)
Multi-ugv Surveillance, David A. Anisi, Xiaoming Hu, Petter Ögren
Abstract: This paper addresses the problem of connectivity constrained surveillance of a given polyhedral area with obstacles using a group of Unmanned Ground Vehicles (UGVs). The considered...
Active Nonlinear Observers for Mobile Systems (2009)
Abstract — For nonlinear systems in general, the observability does not only depend on the initial conditions, but also on the control. This presents an interesting issue: how to design an observer...
A hybrid peer-to-peer solution for context distribution in mobile and ubiquitous environments (2008)
Hu, Xiaoming, Ding, Yun, Paspallis, Nearchos, Papadopoulos, George, Bratskas, Pyrros, ...
With the proliferation of mobile devices such as PDAs and smartphones, users get accustomed to using them in their daily life. This raises the expectations for user-customized and environment-aware...
Context grouping mechanism for context distribution in ubiquitous environments (2008)
Valla, Massimo, Fra, Cristina, ...
Context distribution is a key aspect for successful applications within mobile and ubiquitous computing environments. In such environments, context information is acquired by several and multiple...
Context grouping mechanism for context distribution in ubiquitous environments (2008)
Valla, Massimo, Frà, Cristina, ...
Context distribution is a key aspect for successful applications within mobile and ubiquitous computing environments. In such environments, context information is acquired by several and multiple...
Abstract Path Planning and Navigation of Mobile Robots in Unknown Environments (2008)
For a robot trying to reach places in at least partially unknown environments there is often a need to replan paths online based on information extracted from the surroundings. In this paper is is...
ON THE SMALLEST ENCLOSING BALLS ∗ (2008)
Daizhan Cheng, Xiaoming Hu, Clyde Martin
Abstract. In the paper a theoretical analysis is given for the smallest ball that covers a finite number of points p1, p2, · · · , pN ∈ R n. Several fundamental properties of the smallest...
Zhang, Dan, Hu, Xiaoming, Wei, Sung-Jen, Liu, Jie, Gao, Huiming, Qian, Li, ...
Abstract Background Inflammation plays an important role in the pathogenesis of Parkinson's disease (PD) through over-activation of microglia, which consequently causes the excessive production of...
1 Drift-free Attitude Estimation Using Quasi-linear Observers (2008)
Summary. In this paper we study the attitude estimation problem for an accelerated rigid body using gyros and accelerometers. The application in mind is that of a walking robot and particular...
Multi-Robot Tracking of a Moving Object Using Directional Sensors (2008)
Xiaoming Hu, Karl H. Johansson, Manuel Mazo, Alberto Speranzon
Abstract — The problem of estimating and tracking the motion of a moving target by a team of mobile robots is studied in this paper. Each robot is assumed to have a directional sensor with limited...
Autocalibration of an Electronic Compass for Augmented Reality (2008)
Xiaoming Hu, Yue Liu, Yongtian Wang, Yanling Hu, Dayuan Yan
Electronic compass is often used to provide the absolute heading reference for tracking the user’s head and hands in Virtual Reality (VR) and Augmented Reality (AR), especially for outdoor AR...
Xiaoming Hu, Yun Ding, Nearchos Paspallis, George A. Papadopoulos, Paolo Barone, Ro Mamelli, ...
Abstract. The increasing proliferation of mobile devices has raised the expectations for user-customized and environment-aware services. However, mobile context-aware systems inherently feature...
An Invariant Manifold Approach to Nonlinear Feedback Stabilization on Compacta (2007)
In this paper, some results of feedback stabilization on compacta for a nonlinear control system are obtained by using an invariant manifold approach. In particular, a class of globally nonminimum...
Multirobot formation control and terrain servoing with limited sensor information (2005)
Tove Gustavi, Xiaoming Hu, Maja Karasalo
Abstract: In this paper mobile multi-agent systems with limited sensor information are studied. Two control algorithms are proposed that do not require global information, and are easy to implement....
Multi-Robot Tracking of a Moving Object Using Directional Sensors (2004)
Manuel Mazo, Alberto Speranzon, Karl H. Johansson, Xiaoming Hu
The problem of estimating and tracking the motion of a moving target by a team of mobile robots is studied in this paper. Each robot is assumed to have a directional sensor with limited range, thus...
Nearly Time-Optimal Paths For A Ground Vehicle (2004)
David Anisi Johan, Johan Hamberg, Xiaoming Hu
It is well known that the sufficient family of time-optimal paths for both Dubins' as well as Reeds-Shepp's car models consist of the concatenation of circular arcs with maximum curvature...
Sensor-based navigation coordination for mobile robots (2003)
Xiaoming Hu, David Fuentes Alarcón, Tove Gustavi
Abstract — In this paper, the problem of navigation coordination is studied. New results are given for robustly integrating behavior based control systems. In the studied problem formulation, one...
Xiaoming Hu, Jodi A. Flaws, I. Glenn Sipes, Patricia B. Hoyer
Previous studies have demonstrated that ovotoxicity induced in small preantral (primordial and primary) ovarian follicles by 4-vinylcyclohexene diepoxide (VCD) in rats is likely via acceleration of...
Feedback stabilization and tracking for nonlinear systems /--by Xiaoming Hu. (1989)
Thesis (Ph. D.)--Arizona State University, 1989.
Beamforming with arrays of varying geometries /--by Xiaoming Hu. (1988)
Includes abstract.
Accelerated Ovarian Failure Induced by 4-Vinyl Cyclohexene Diepoxide in Nrf2 Null Mice
Hu, Xiaoming, Roberts, Jenny R., Apopa, Patrick L., Kan, Yuet Wai, Ma, Qiang
Genetic and biochemical analyses have uncovered an essential role for nuclear factor erythroid 2-related factor 2 (Nrf2) in regulating phase II xenobiotic metabolism and antioxidant response. Here we...
Accelerated Ovarian Failure Induced by 4-Vinyl Cyclohexene Diepoxide in Nrf2 Null Mice
Hu, Xiaoming, Roberts, Jenny R., Apopa, Patrick L., Kan, Yuet Wai, Ma, Qiang
Genetic and biochemical analyses have uncovered an essential role for nuclear factor erythroid 2-related factor 2 (Nrf2) in regulating phase II xenobiotic metabolism and antioxidant response. Here we...
Gao, Xi, Hu, Xiaoming, Qian, Li, Yang, Sufen, Zhang, Wei, Zhang, Dan, ...
Robust Formation Control using Switching Range Sensors
Karasalo, Maja, Hu, Xiaoming, Gustavi, Tove
In this paper, control algorithms are presented for formation keeping and path followingfor non-holonomic platforms. The controls are based on feedback from onboard directional range sensors, and a...
An Optimization Approach to Adaptive Kalman Filtering
In this paper, an optimization-based adaptive Kalman filtering method is proposed. The method produces an estimate of the process noise covariance matrix Q by solving an optimization problem over a...
Periodic and Recursive Control Theoretic Smoothing Splines
Karasalo, Maja, Hu, Xiaoming, Martin, Cylde
In this paper, a recursive control theoretic smoothing spline approach is proposed forreconstructing a closed contour.Periodic splines are generated by minimizing a cost function subjectto...
Contour Reconstruction using Recursive Smoothing Splines - Algorithms and Experimental Validation
Karasalo, Maja, Piccolo, Giacomo, Kragic, Danica, Hu, Xiaoming
In this paper, a recursive smoothing splineapproach for contour reconstruction is studied and evaluated. Periodic smoothing splines areused by a robot to approximate the contour of encountered...
An Estimated GCV Functionfor Periodic Control Theoretic Smoothing Splines
Karasalo, Maja, Hu, Xiaoming, Martin, Clyde
In this paper, a method is developed for estimating the optimal smoothing parameter for periodic control theoretic smoothing splines.The procedure is based on general cross validation (GCV) and...