Due to the harsh working environment, Near-Space Hypersonic Vehicles (NSHVs) have characteristics of frequent faults, which seriously affect flight safety. However, most researches focus on active fault-tolerant control for actuator faults. In order fill gap sensor this paper presents an Active Fault-Tolerant Control (AFTC) strategy NSHVs based Disturbance Rejection (ADRC) combined with fault d...

With the rapid deployments of the active disturbance rejection control (ADRC) as a bonafide industrial technology in the background, this paper summarizes some recent results in the analysis of linear ADRC and offers explanations in the frequency response language with which practicing engineers are familiar. Critical to this endeavor is the concept of bandwidth, which has been used in a more g...

Flywheel energy storage has distinct advantages over conventional energy storage methods such as electrochemical batteries. Because the energy density of a flywheel rotor increases quadratically with its speed, the foremost goal in flywheel design is to achieve sustainable high speeds of the rotor. Many issues exist with the flywheel rotor operation at high and varying speeds. A prominent probl...

This paper addresses the fault tolerant control problem of a quadrotor unmanned aerial vehicle (UAV) with actuator loss-of-effectiveness and measurement noise. To this end, cascade active disturbance rejection (ADRC) strategy two-stage Kalman filter (TSKF) is proposed. The TSKF can estimate factor state UAV in noisy environment. Considering that unknown will influence estimation accuracy TSKF, ...

This article presents a deep theoretical analysis of the Active Disturbance Rejection Control (ADRC) regulator for control first-order systems, directly compared to “traditional” Proportional Integral (PI) regulator. To complete study, ADRC and PI are implemented into model single-phase Dual Bridge (DAB) converter regulate voltage Direct Current (DC) network. Facing different types disturbances...

In this paper, a rehabilitation robot driven by multifilament muscles is designed based on the motion model and system elbow joint model. The passive training mode of robots were researched, active disturbance rejection control (ADRC) leveraged to improve tracking angle joints. no-load simulation robots, disturbances are added variables complete ADRC Proportional Integral Differential (PID) pos...

Abstract In this paper, we study the stabilization problem of a disk beam structure with disturbance. Specifically, consists clamped at one end to center rotating rigid disk, while other is attached tip mass subject non-uniform bounded We start investigation by designing controller via Active disturbance rejection control (ADRC) approach. The high gain extended state observer (ESO) first design...

In this work, a Nonlinear Higher Order Extended State Observer (NHOESO) is presented to replace the Linear (LESO) used in Conventional Active Disturbance Rejection Control (C-ADRC) solutions. NHOESO, standard LESO completed with two-term smooth nonlinear function saturation-like characteristics. The proposed novel NHOESO enables precise observation of generalized disturbances higher-order deriv...

A PV three-phase grid following inverter (GFI) with LCL filters can reduce current harmonics and deliver active power to the grid. Controlling such higher-order systems is challenging due system uncertainties, voltage variations, filter resonance. Active disturbance rejection control (ADRC) provides resilience these uncertainties a prompt response disturbances. linear extended state observer ph...

This paper presents a study on controlling the out-of-water motion of amphibious multi-rotor UAVs using cascade control method based Active Disturbance Rejection Control (ADRC) algorithm. The aim is to overcome challenges time-varying model parameters and complex external disturbances. research involves developing an underwater dynamic analyzing hydrodynamic forces calculate theoretical inertia...