A5066730411- Adaptive Control of Nonlinear Systems
- Space Satellite Systems and Control
- Fault Detection and Control Systems
- Stability and Control of Uncertain Systems
- Guidance and Control Systems
- Advanced Control Systems Optimization
- Inertial Sensor and Navigation
- Dynamics and Control of Mechanical Systems
- Distributed and Parallel Computing Systems
- Control Systems in Engineering
- Distributed Control Multi-Agent Systems
- Control and Dynamics of Mobile Robots
- Magnetic Bearings and Levitation Dynamics
- Astro and Planetary Science
- Geophysics and Sensor Technology
- Aerospace Engineering and Control Systems
- Iterative Learning Control Systems
- Target Tracking and Data Fusion in Sensor Networks
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Cloud Computing and Resource Management
- Image Processing Techniques and Applications
- Underwater Vehicles and Communication Systems
- Advanced Data Storage Technologies
- Advanced Vision and Imaging
Beihang University
2016-2025
Peng Cheng Laboratory
2021-2024
Northeastern University
2015-2024
Tianjin Municipal Engineering Design and Research Institute
2024
Beijing Advanced Sciences and Innovation Center
2021
Universidad del Noreste
2021
Northeastern University
2006-2020
Exascale (United Kingdom)
2018
Molecular Sciences Software Institute
2018
Shenyang Aerospace University
2014
The requirements for the control performances of space manipulators, especially stability and accuracy attitude systems base spacecrafts, are ever increasing during target capturing tasks. However, system uncertainties caused by parameter variations will degrade severely. This paper investigates precise fast trajectory tracking problem free-flying manipulator, after a with uncertain mass. To compensate uncertainty complex dynamics, novel adaptive sliding mode disturbance observer (ASMDO) is...
This paper is devoted to attitude tracking control of fractionated spacecraft with wireless communication. We consider the practical case that suffers from uncertain inertia parameters, external disturbances, and even unknown time-varying actuator faults. Within framework backstepping method, a novel event-triggered adaptive fault-tolerant scheme proposed. In our design, an event-triggering mechanism introduced determine time instants for communication, which successfully avoids continuous...
In this article, a novel spacecraft composite attitude stabilization scheme based on dual disturbances observers (DDOs) and high-precision nonsingular terminal sliding mode control is presented, with explicit consideration of reaction wheel dynamics multiple disturbances. First, coupling model constructed covering These include matched caused by motor counter electromotive force equivalent mismatched disturbance friction environment DDOs are designed to estimate both disturbances,...
In this paper, we present a robust fault-tolerant control scheme to achieve attitude of flexible spacecraft with disturbances and actuator failures. It is shown that the algorithms are not only attenuate exogenous bounded attenuation level, but also able tolerate partial loss effectiveness. The proposed controller design simple can guarantee faulty closed-loop system be quadratically stable prescribed upper bound cost function. obtained by combining free weighting matrices method linear...
Multiple disturbances are the main constraints that hinder high-performance velocity tracking of gimbal servo system in control moment gyro. This article presents a non-cascade structured velocity-tracking controller based on refined disturbance observer for handling multiple and improve performance. Specifically, is designed to estimate imbalance disturbance, which can be represented by an exogenous system. The cannot modeled <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Abstract Remote sensing technology, which conventionally employs spectrometers to capture hyperspectral images, allowing for the classification and unmixing based on reflectance spectrum, has been extensively applied in diverse fields, including environmental monitoring, land resource management, agriculture. However, miniaturization of remote systems remains a challenge due complicated dispersive optical components spectrometers. Here, m‐phase GaTe 0.5 Se with wide‐spectral photoresponses...
For a practical engineering system, disturbances usually have negative impact on system performance. Especially, when the physical constraints (e.g., actuator amplitude saturation and input channel constraint) are present, study for antidisturbance controllability (ADC) is of paramount importance. This article presents concepts disturbance estimability, compensability, an enhanced control (EADC). From viewpoint design, example spacecraft attitude given. The multiple explicitly analyzed sake...
High-precision and safety control in face of disturbances uncertainties is a challenging issue both theoretical practical importance. In this article, new adaptive anti-disturbance schemes are proposed for class uncertain nonlinear systems with composite disturbances, including additive multiplicative actuator faults, implicit deeply coupled system states. Both the cases known unknown control/fault directions investigated. By properly fusing techniques disturbance observers compensation, it...
High-precision and fast-response attitude control of launch vehicles plays an increasingly important role in numerous space missions, ensuring the efficiency transportation. However, disturbances caused by liquid sloshing external environments degrade performances seriously. Because complicated coupling with inputs angular acceleration, dynamics disturbance are highly uncertain. Therefore, it is urgent to develop novel estimation methods for thoroughly analyzing dynamics. In this paper,...
This brief investigates the high-precision trajectory tracking control of space manipulator after capturing an unknown target. The neutral uncertainty induced by parameter variation poses great challenges to controller design. Moreover, existence actuator deadzone nonlinearity makes situation more complicated. In order address aforementioned difficulties, a novel scheme is proposed in this brief. First, reduce conservativeness descriptions uncertainties, dynamic described uncertain system...
The rendezvous and proximity operations with respect to a tumbling non-cooperative target pose high requirement for the position attitude control accuracy of servicing spacecraft. However, multiple disturbances including parametric uncertainties, flexible vibration, unknown nonlinear dynamics degrade performance significantly. In order enhance system anti-disturbance ability, this paper proposes composite law spacecraft tracking. Firstly, relative dynamic models are established, where...
A novel composite anti‐disturbance control scheme is proposed for attitude system (ACS) of flexible spacecraft with the reaction wheel friction. The can overcome performance degradation controller under condition friction and appendage vibration. First, dynamic model modelled, including disturbance torque wheel. sliding mode observer designed to estimate feed‐forward compensation. Then, a vibration constructed compensate Finally, an adopted attenuate estimation error other bounded...
Precise attitude control of space manipulators plays an important role in advanced on-orbit assembly tasks. The vibration flexible appendage and inertial uncertainties encountered the operating process, however, may cause error or even safety threats to manipulator system. In this article, a high-precision scheme system is designed via combination disturbance observer (DO), prescribed performance-based H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...