Active disturbance-rejection methods are effective in estimating and rejecting disturbances
in both transient and steady-state responses. This paper presents a deep observation on …

In this paper, we review the development of a phase theory for systems and networks in its
first five years, represented by a trilogy: Matrix phases and their properties; The MIMO LTI …

This brief addresses the problem of instability occurring in the voltage control mode of a non-
minimum phase (NMP) DC-DC boost converter. To solve this instability issue in the …

This paper presents a model-free solution to the robust stabilization problem of discrete-time
linear dynamical systems with bounded and mismatched uncertainty. An optimal controller …

In contrast to the well-developed gain analysis for multi-input-multi-output (MIMO) linear time-
invariant (LTI) systems, the research on the phase analysis does not share the same status …

This article presents a modified equivalent-input-disturbance (MEID) approach that actively
rejects exogenous disturbances. A dynamic compensator is newly introduced in a …

In the realm of ultraprecision motion control, achieving high tracking accuracy, great
trajectory generalization, and robust disturbance rejection simultaneously remains a …

In this paper, a new distributed consensus tracking protocol incorporating local disturbance
rejection is devised for a multi-agent system with heterogeneous dynamic uncertainties and …

Exogenous disturbances largely affect the control performance of systems with time delays.
This study considers a control problem of rejecting a disturbance in a PI control system for a …

In this paper, we define the phase response for a class of multi-input multi-output (MIMO)
linear time-invariant (LTI) systems whose frequency responses are (semi-) sectorial at all …