5 citations · 9 across the 14 of their papers we have counts for
15 papers
Mission-Centric Requirements Analysis of Model Predictive Control in Spacecraft Rendezvous and Proximity Operations
Nils Maier, Torbjørn Cunis, Tam W. Nguyen
Rendezvous and proximity operations (RPO) missions are commonly designed as a sequence of distinct phases each governed by its own sample time, constraint set, and cost structure,…
Taylor-Informed Predictive Cost Adaptive Control for Quadrotors with Online Gravity-Trim Adaptation
Tam W. Nguyen
This paper develops Taylor-informed predictive cost adaptive control (PCAC) for quadrotors with online gravity-trim adaptation. First-, second-, and third-order expansions of the n…
Taylor-Informed Indirect Adaptive Predictive Control Using Jacobian-Frozen Affine Predictors
Tam W. Nguyen
This paper develops a Taylor-informed indirect adaptive predictive control framework for nonlinear sampled-data systems using Jacobian-frozen affine predictors. A finite Taylor exp…
A Numerical Investigation of Indirect Adaptive Predictive Control with Structure-Informed Nonlinear Regressors
Tam W. Nguyen
This paper numerically investigates nonlinear model construction from supplied structural information within predictive cost adaptive control. The study varies the retained nonline…
General formulation of an analytic, Lipschitz continuous control allocation for thrust-vectored controlled rigid-bodies
Frank Mukwege, Tam Willy Nguyen, Emanuele Garone
This paper presents a general framework for solving the control allocation problem (CAP) in thrust-vector controlled rigid-bodies with an arbitrary number of thrusters. Two novel s…
A Predictive Framework for Adversarial Energy Depletion in Inbound Threat Scenarios
Tam W. Nguyen
This paper presents a predictive framework for adversarial energy-depletion defense against a maneuverable inbound threat (IT). The IT solves a receding-horizon problem to minimize…
Fast RLS Identification Leveraging the Linearized System Sparsity: Predictive Cost Adaptive Control for Quadrotors
Tam W. Nguyen
This paper presents a centralized predictive cost adaptive control (PCAC) strategy for the position and attitude control of quadrotors. PCAC is an optimal, prediction-based control…
KPCA for Thrust Vectoring Systems Exhibiting Singular Points
Tam W. Nguyen, Kyoungseok Han, Kenji Hirata
This paper considers a class of thrust vectoring systems, which are nonlinear, overactuated, and time-invariant. We assume that the system is composed of two subsystems and there e…
Data-Driven Retrospective Cost Adaptive Control for Flight Control Application
Syed Aseem Ul Islam, Tam W. Nguyen, Ilya V. Kolmanovsky +1
Unlike fixed-gain robust control, which trades off performance with modeling uncertainty, direct adaptive control uses partial modeling information for online tuning. The present p…
Output-Feedback Model Predictive Control with Online Identification
Tam W. Nguyen, Syed Aseem Ul Islam, Dennis S. Bernstein +1
Model predictive control (MPC) is a widely used modern control technique with numerous successful application in diverse areas. Much of this success is due to the ability of MPC to…
Technical Note for "A Geodesic Approach for the Control of Tethered Quadrotors"
Tam W. Nguyen, Marco M. Nicotra, Emanuele Garone
This technical note focuses on the control of a quadrotor unmanned aerial vehicle (UAV) tethered to the ground. The control objective is to stabilize the UAV to the desired positio…
Proofs of Control of a Quadrotor and a Ground Vehicle Manipulating an Object
Tam W. Nguyen, Laurent Catoire, Emanuele Garone
This paper focuses on the control of a cooperative system composed of an Unmanned Aerial Vehicle (UAV) and an Unmanned Ground Vehicle (UGV) manipulating an object. The two units ar…
Explicit Reference Governor for the Constrained Control of Time-Delayed Linear Systems
Marco M. Nicotra, Tam Nguyen, Emanuele Garone +1
This paper introduces an explicit reference governor approach for controlling time delay linear systems subject to state and input constraints. The proposed framework relies on sui…
A Passivity-Based Distributed Reference Governor for Constrained Robotic Networks
Tam Nguyen, Takeshi Hatanaka, Mamoru Doi +2
This paper focuses on a passivity-based distributed reference governor (RG) applied to a pre-stabilized mobile robotic network. The novelty of this paper lies in the method used to…
Proof of Control of a UAV and a UGV Cooperating to Manipulate an Object
Tam Nguyen, Emanuele Garone
This paper focuses on the control of a system composed of an Unmanned Aerial Vehicle (UAV) and an Unmanned Ground Vehicle (UGV) which cooperate to manipulate an object. The two uni…