##### KMap

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Dynamics and control in nonlinear, time-periodic, time-delayed, stochastic, and fractional order systems; chaos identification and control; multi-agent consensus control and estimation; spacecraft guidance, navigation and control; estimation and control of spacecraft attitude and relative motion dynamics; coupled orbit/attitude dynamics; Coulomb formation flying; interplanetary, interstellar and libration point transfers; nonlinear vibrations; order reduction; regenerative chatter in machining; vibration-based damage detection in structural and rotordynamic systems.Show Less

#### VOSviewer

##### Courses

- OMSFOrbital Mechanics and Space Flight
- DMDynamics of Machines
- AVAdvanced Vibration
- IACTIntroduction to Advanced Control Theory
- IMDInterplanetary Mission Design
- MVMechanical Vibrations
- ICEInternal Combustion Engines
- AAAdvanced Astrodynamics
- SADCSpacecraft Attitude Dynamics and Control
- SOESpacecraft Optimal Estimation

##### Grants

- SBIR Phase I: Assured Autonomous Spacecraft GN&C via Hybrid Control
Principal Investigator (PI)

2017

###### $18.9K

- Collaborative Research: Resilient Decentralized Estimation and Control for Cooperative Rigid Body Multivehicle Systems
Principal Investigator (PI)

2016

###### $250.0K

- Characterization Of Non-linearized Spacecraft Relative Motion Using Nonlinear Normal Modes
Principal Investigator (PI)

2014

###### $46.5K

##### News

- UArizona Ranks Third Among Top Producers of Fulbright US Scholars
2021

##### Publications (123)

Recent

- Rigid Body Attitude Control, Synchronization, and Bipartite Consensus using Feedback Reshaping
2023

- Calibrated Kalman Filtering in Relative Orbit Estimation
2022

- PID Pose Consensus Control of a Multi-Agent Rigid Body System using Exponential Coordinates
2022

- Consensus SE(3)-Constrained Extended Kalman Filter and Sensor Fusion for Close Proximity Orbital Relative Pose Estimation
2022

- Consensus Control of Rigid Body Spacecraft in Orbital Relative Motion using TSE(3) and Exponential Coordinates
2022

- SE(3)-Constrained Extended Kalman Filtering for Rigid Body Pose Estimation
2022

- Full N-Body Problem in the Geometric Mechanics Framework and its Reduction to Circular Restricted Three-Body Problem
2022

- Design Considerations for Attitude Consensus Control of Two Flexible Spacecraft
2022

- Consensus and Balanced Configurations on the Circle with Ring Topology and Heterogeneous Input Delays
2022

- Equivalence and Calibration of Euler Angles with Less Nonlinear Attitude Parameterizations
2022

- Pose Consensus Control of Multi-Agent Rigid Body Systems with Homogeneous and Heterogeneous Communication Delays
2022

- Prescribed-Time Consensus Control of Rigid Body Pose
2022

- Fuel Efficiency of Fully- and Under-Constrained Coulomb Formations in Slightly Elliptic Reference Orbits,
2021

- Modified Nonlinear Morse-Lyapunov Attitude Control
2021

- 6-DOF Consensus Control of Multi-Agent Rigid Body Systems using Rotation Matrices
2021

- Equivalence of Linearized Approximations for Overparameterized Representations of Dynamic Systems
2021

- Robust Hybrid Supervisory Control for Spacecraft Close Proximity Missions
2021

- Consensus Stability in Multi-Agent Systems with Periodically Switched Communication Topology using Floquet Theory
2021

- Lyapunov-Based Control of Kinematically Coupled Close-Proximity Spacecraft Feature Point Dynamics,
2021

- Attitude Consensus Control of a Rigid Body Multi-Vehicle System with Heterogeneous Communication Delays
2021

- Decentralized 6-DOF Consensus Control in Orbital Relative Motion with Heterogeneous Communication Delays using Rotation Matrices
2020

- Finite-Time Attitude Consensus Control of a Multi-Agent Rigid Body System
2020

- Adaptive Consensus Control of Rigid Body Attitude Motion using Rotation Matrices
2020

- Rigid Body Pose Hybrid Control Using Dual Quaternions: Global Asymptotic Stabilization and Robustness
2020

- Calibrated Approximations of Error Kinematics for Attitude Parameterizations
2020

- Distributed Adaptive Control and Stability Verification for Linear Multiagent Systems with Heterogeneous Actuator Dynamics and System Uncertainties
2019

- Ambiguous Orbits in Elliptic Chief Spacecraft Relative Orbit Estimation with Range-Only Measurements
2019

- Consensus Control of a Multi-Agent Rigid Body System on TSO(3)^N and TSE(3)^N
2019

- Coordinate-Invariant Linear Quadratic Control
2019

- Consensus Estimation of Rigid Body Motion using Lie Algebra se(3) and the Consensus Extended Kalman Filter
2019

- Morse-Lyapunov-Based Decentralized Consensus Control of Rigid Body Spacecraft in Orbital Relative Motion
2019

- Space-Based Relative Orbit Estimation using Information Sharing and the Consensus Kalman Filter
2019

- Optimal Observer-Based Feedback Control for Linear Fractional-Order Systems with Constant or Periodic Coefficients
2019

- Dynamics and Control of Spacecraft with a Large Misaligned Rotational Component
2019

- Robust Stochastic Stabilization of Attitude Motion
2019

- Accurate Electrostatic Force and Moment Approximations for Coulomb Charged Spacecraft Based on Center of Charge
2019

- Distributed Control of Rigid Body Reduced Attitude: Synchronization and Balancing
2019

- Fractional PID Consensus Protocols for Second-Order Multi-Agent Systems
2019

- Fractional Control of Relative Orbit Trajectories
2019

- Decentralized Consensus Control of Rigid Bodies using Exponential Coordinates
2019

- Numerical Solution of Multi-Order Fractional Differential Equations with Multiple Delays via Spectral Collocation Methods
2018

- Hybrid Control for Autonomous Spacecraft Rendezvous Proximity Operations and Docking
2018

- Fractional Control of Rigid Body Attitude Dynamics using Exponential Coordinates
2018

- Linearized Relative Orbital Motion Model about an Oblate Body Without Averaging
2018

- Adaptive Control of a Rigid Body Vehicle on Exponential Coordinates with Guaranteed Performance
2018

- Ambiguous Relative Orbits in Sequential Relative Orbit Estimation with Range-Only Measurements
2018

- Phase-Variable Canonical State-Space Realizations and Initializations for Linear Time-Invariant Multi-Term Fractional Differential Equations
2018

- Time-Varying Communication Topology in Consensus Estimation of Spacecraft Relative Orbital Motion
2018

- Periodically Switched Communication Topology in Multi-Agent Consensus Control: Stability and Floquet Theory
2018

- Decentralized Estimation of Spacecraft Relative Motion Using Consensus Extended Kalman Filter
2018

- Integration of Divide-and Conquer Algorithm with Fractional Order Controllers for the Efficient Dynamic Modeling and Control of Multibody Systems
2018

- Robust Global Asymptotic Stabilization of Rigid Body Dynamics using Dual Quaternion Feedback
2018

- Stable Distributed Adaptive Systems for Control of Linear Multiagent Systems in the Presence of Heterogeneous Actuator Dynamics and Unknown Parameters
2018

- Optimal Periodic-Gain Fractional Delayed State Feedback Control for Linear Fractional Periodic Time-Delayed Systems
2018

- Extended Kalman filter and Observability Analysis for Consensus Estimation of Spacecraft Relative Motion
2018

- Morse-Lyapunov-Based Control of Rigid Body Motion on TSE(3) via Backstepping
2018

- Probabilistic-Robust Optimal Control for Uncertain Linear Time-delay Systems by State Feedback Controllers with Memory
2018

- Robust Hybrid Supervisory Control for a 3-DOF Spacecraft in Close-Proximity Operations
2018

- Spacecraft Attitude Fractional Feedback Control using Rotation Matrices and Exponential Coordinates
2018

- The FCC Stability Criterion for Fractional-Order Linear Time-Invariant Systems with Commensurate or Incommensurate Orders
2018

- Linearized Relative Orbital Motion Dynamics in a Rotating Second Degree and Order Gravity Field
2018

- Robust Hybrid Kalman Filter for a Class of Nonlinear Systems
2018

- Nonlinear Normal Modes of Relative Orbital Motion for Unperturbed Two-Body Reference Orbits
2017

- Efficient Modified Chebyshev Differentiation Matrices for Fractional Differential Equations
2017

- Design of Optimal Fractional Luenberger Observers for Linear Fractional-Order Systems
2017

- A New Time-Explicit J2-Perturbed Nonlinear Relative Orbit Model with Perturbation Solutions
2017

- Coefficient of Restitution in Fractional Viscoelastic Compliant Impacts using Fractional Chebyshev Collocation
2017

- Stabilization of Rigid Body Attitude Motion with Time-Delayed Feedback
2017

- Earth-Moon L1 Libration Point Orbit Continuous Stationkeeping Control using Time-Varying LQR and Backstepping
2017

- On Kalman Filtering and Observability in Nonlinear Sequential Relative Orbit Estimation
2017

- Distributed Adaptive Control of Networked Multiagent Systems with Heterogeneous Actuator Dynamics
2017

- Stable Fractional Chebyshev Differentiation Matrix for the Numerical Solution of Multi-Order Fractional Differential Equations
2017

- Adaptive Neural-Fuzzy Inference System to Control Dynamical Systems with Fractional Order Dampers
2017

- Fractional Chebyshev Collocation Method for Solving Linear Fractional-Order Delay-Differential Equations
2017

- Comparison of Relative Orbital Motion Perturbation Solutions in Cartesian and Spherical Coordinates
2017

- Fractional Delayed Control Design for Linear Periodic Systems
2016

- Chaos Analysis and Control in Fractional Order Systems using Fractional Chebyshev Collocation Method
2016

- Transition Curve Analysis of Linear Fractional Periodic Time-Delayed Systems Via Explicit Harmonic Balance Method
2016

- Optimal Fractional State Feedback Control for Linear Fractional Periodic Time-Delayed Systems
2016

- Robust Hybrid Supervisory Control for Rendezvous and Docking of a Spacecraft
2016

- One-Dimensional Impact Problem in Fractional Viscoelastic Models
2016

- Analysis of Ambiguous Orbits in Sequential Relative Orbit Estimation with Range-Only Measurements
2016

- Fuel Efficient Periodic Gain Control Strategies for Spacecraft Relative Motion in Elliptic Chief Orbits
2016

- Third Order Cartesian Relative Motion Perturbation Solutions for Slightly Eccentric Chief Orbits
2016

- Linguistic Fuzzy Logic Control of a Double Inverted Pendulum with Destabilizing Fractional Dampers
2016

- Fractional PID Control of Spacecraft Attitude Dynamics Using Rotation Matrices
2016

- A real-time approach for damage identification using hyperchaotic probe and stochastic estimation
2016

- Analysis of Ambiguous Orbits for Elliptic Chief Relative Orbit Estimation with Range-Only Measurements
2016

- Almost Global Stochastic Stabilization of Attitude Motion with an Unknown Diffusion Coefficient
2016

- Decentralized Consensus Control of a Rigid-Body Spacecraft Formation with Communication Delay
2016

- A New Approach to Space Domain Awareness at the University of Arizona
2016

- The Spectral Parameter Estimation Method for Parameter Identification of Linear Fractional Order Systems
2016

- Unscented State Estimation for Rigid Body Attitude Motion with a Finite-Time Stable Observer
2016

- Spherical Coordinate Perturbation Solutions to Relative Motion Equations: Application to Double Transformation Spherical Solution
2016

- Delayed Feedback Asymptotic Stabilization of Rigid Body Attitude Motion for Large Rotations
2015

- Attitude Stabilization of Rigid Spacecraft with Minimal Attitude Coordinates and Unknown Time-Varying Delay
2015

- Transfers from Earth to Earth-Moon L3 Halo Orbits using Accelerated Manifolds
2015

- Robust Stabilization of Rigid Body Attitude Motion in the Presence of a Stochastic Input Torque
2015

- Fractional Delayed Damped Mathieu Equation
2015

- Finite-Time Control for Spacecraft Body-Fixed Hovering over an Asteroid
2015

- Determining Position Around an Asteroid Using Communication Relays and Trilateration
2015

- Asymptotic Stabilization of Rigid Body Attitude Motion in the Presence of Unknown Time Delay in Feedback
2015

- USE OF NONLINEARITIES FOR INCREASED OBSERVABILITY IN RELATIVE ORBIT ESTIMATION
2015

- NONLINEAR REDUCED ORDER DYNAMICS OF SPACECRAFT RELATIVE MOTION FOR A CIRCULAR CHIEF ORBIT
2015

- Asymptotic Tracking Control for Spacecraft Formation Flying with Decentralized Collision Avoidance
2015

- Explicit Harmonic Balance Method for Transition Curve Analysis of Linear Fractional Periodic Time-Delayed Systems
2015

- Decentralized Relative Position and Attitude Consensus Control of a Spacecraft Formation with Communication Delay
2015

- Continuous Thrust Stationkeeping in Earth-Moon L1 Halo Orbits Based on LQR Control and Floquet Theory
2014

- Optimal Control of Spacecraft Motion in Time-periodic Astrodynamic Systmes
2014

- Finite-time Control for Body-fixed Hovering of Rigid Spacecraft Over an Asteroid
2014

- Kinematically Coupled Relative Spacecraft Motion Control Using State-dependent Riccati Equation Method
2014

- Nonlinear Output Tracking and Disturbance Rejection for Autonomous Close Range Rendezvous and Docking of Spacecraft
2014

- Determination of Relative Motion of a Space Object from Simultaneous Measurements of Range and Range Rate
2014

- Observed-based Body-frame Hovering Control Over a Tumbling Asteroid
2014

- Almost Global Asymptotic Tracking Control for Spacecraft Body-fixed Hovering Over an Asteroid
2014

- Optimal Feedback Control Strategies for Periodic Delayed Systems
2014

- Finite-time Observer for Rigid Spacecraft Motion Over an Asteroid
2014

- Three-dimensional Vibration Analysis of Rectangular Plates with Undamaged and Damaged Boundaries by the Spectral Collation Method
2014

- Numerical Stability of Linear Stochastic Delay Differential Equations Using Chebyshev Spectral Continuous Time Approximation
2014

- Approximate Transition Boundaries in the Fractional Delayed Damped Mathieu Equation
2014

- Statistical Fuel Budgets for Impulsive Guidance to Earth-Moon L1 Halo Orbits
2014

- Improved Transfers to Earth-Moon L3 Halo Orbits
2014

- Optimal Interior Earth-Moon Lagrange Point Transfer Trajectories Using Mixed Impulsive and Continuous Thrust
2014

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