84 citations · 152 across the 16 of their papers we have counts for
17 papers
Parallel Feedforward Compensation for Output Synchronization: Fully Distributed Control and Indefinite Laplacian
Mengmou Li, Ioannis Lestas, Li Qiu
This work is associated with the use of parallel feedforward compensators (PFCs) for the problem of output synchronization over heterogeneous agents and the benefits this approach…
The Singular Angle of Nonlinear Systems
Chao Chen, Di Zhao, Sei Zhen Khong
In this paper, we introduce an angle notion called the singular angle for nonlinear systems from an input-output perspective. The proposed system singular angle, based on the angle…
Phase of Nonlinear Systems
Chao Chen, Di Zhao, Wei Chen +2
In this paper, we propose a definition of phase for a class of stable nonlinear systems called semi-sectorial systems, from an input-output perspective. The definition involves the…
Low Phase-Rank Approximation
Di Zhao, Axel Ringh, Li Qiu +1
In this paper, we propose and solve a low phase-rank approximation problem, which serves as a counterpart to the well-known low-rank approximation problem and the Schmidt-Mirsky th…
On Spectral Properties of Signed Laplacians with Connections to Eventual Positivity
Wei Chen, Dan Wang, Ji Liu +5
Signed graphs have appeared in a broad variety of applications, ranging from social networks to biological networks, from distributed control and computation to power systems. In t…
Stabilization of Cascaded Two-Port Networked Systems with Simultaneous Nonlinear Uncertainties
Di Zhao, Sei Zhen Khong, Li Qiu
We introduce a versatile framework to model and study networked control systems (NCSs). An NCS is described as a feedback interconnection of a plant and a controller communicating…
Controlling a Networked SIS Model via a Single Input over Undirected Graphs
Dan Wang, Ji Liu, Philip E. Paré +4
This paper formulates and studies the problem of controlling a networked SIS model using a single input in which the network structure is described by a connected undirected graph.…
Bird Flocking Inspired Control Strategy for Multi-UAV Collective Motion
Xiyuan Liu, Li Qiu
UAV collective motion has become a hot research topic in recent years. The realization of UAV collective motion, however, relied heavily on centralized control method and suffered…
A Convex Approach to Frisch-Kalman Problem
Di Zhao, Anders Rantzer, Li Qiu
This paper proposes a convex approach to the Frisch-Kalman problem that identifies the linear relations among variables from noisy observations. The problem was proposed by Ragnar…
Market Implementation of Multiple-Arrival Multiple-Deadline Differentiated Energy Services
Yanfang Mo, Wei Chen, Li Qiu +1
An increasing concern in power systems is how to elicit flexibilities in demand, which leads to nontraditional electricity products for accommodating loads of different flexibility…
A Structure-Tensor Approach to Integer Matrix Completion with Applications to Differentiated Energy Services
Yanfang Mo, Wei Chen, Sei Zhen Khong +1
Efficient resource allocation is one of the main driving forces of human civilizations. Of the many existing approaches to resource allocation, matrix completion is one that is fre…
Phase Analysis of MIMO LTI Systems
Wei Chen, Dan Wang, Sei Zhen Khong +1
In this paper, we introduce a definition of phase response for a class of multi-input multi-output (MIMO) linear time-invariant (LTI) systems, the frequency responses of which are…
On the Phases of a Complex Matrix
Dan Wang, Wei Chen, Sei Zhen Khong +1
In this paper, we define the phases of a complex sectorial matrix to be its canonical angles, which are uniquely determined from a sectorial decomposition of the matrix. Various pr…
Stabilization of Cascaded Two-Port Networked Systems Against Nonlinear Perturbations
Di Zhao, Sei Zhen Khong, Li Qiu
A networked control system (NCS) consisting of cascaded two-port communication channels between the plant and controller is modeled and analyzed. Towards this end, the robust stabi…
Distributed Algorithms for Computation of Centrality Measures in Complex Networks
Keyou You, Roberto Tempo, Li Qiu
This paper is concerned with distributed computation of several commonly used centrality measures in complex networks. In particular, we propose deterministic algorithms, which con…
When MIMO Control Meets MIMO Communication: A Majorization Condition for Networked Stabilizability
Wei Chen, Songbai Wang, Li Qiu
In this paper, we initiate the study of networked stabilization via a MIMO communication scheme between the controller and the plant. Specifically, the communication system is mode…
Complex Laplacians and Applications in Multi-Agent Systems
Jiu-Gang Dong, Li Qiu
Complex-valued Laplacians have been shown to be powerful tools in the study of distributed coordination of multi-agent systems in the plane including formation shape control proble…