A5101401761- Adaptive Control of Nonlinear Systems
- Aerospace and Aviation Technology
- Aeroelasticity and Vibration Control
- Computational Fluid Dynamics and Aerodynamics
- Advanced Sensor and Control Systems
- Underwater Vehicles and Communication Systems
- Aerospace Engineering and Control Systems
- Advanced Algorithms and Applications
- Advanced Control Systems Optimization
- Hydraulic and Pneumatic Systems
- Iterative Learning Control Systems
- Wind and Air Flow Studies
- Aerospace Engineering and Energy Systems
- Aerodynamics and Fluid Dynamics Research
- Mechanical Engineering and Vibrations Research
- Atmospheric chemistry and aerosols
- Plasma and Flow Control in Aerodynamics
- Industrial Technology and Control Systems
- Stability and Control of Uncertain Systems
- Control and Dynamics of Mobile Robots
- Industrial Automation and Control Systems
- Robotic Mechanisms and Dynamics
- Biomimetic flight and propulsion mechanisms
- Distributed Control Multi-Agent Systems
- VLSI and FPGA Design Techniques
Jiaxing University
2020-2025
Harbin Engineering University
2017-2025
China Academy of Engineering Physics
2020-2024
China Huadian Corporation (China)
2020
Beijing Aerospace Flight Control Center
2016
Beihang University
2003-2015
Northwest Normal University
2014
Guizhou University
2010
Abstract Establishing a microelastic deformation (micro-deformation) model of end-point parallel manipulators (PMs) in the gravity field is great significance for improving calibration accuracy. Gravity affects limb constraint wrenches space and micro-deformation PMs, which leads to decrease precision end effector. A modeling method was proposed analysis PMs with consideration flexibility rods actuators based on screw theory fix this issue. First, mechanism considered an open-loop by cutting...
Abstract In the present paper, we study well-posedness of solution to initial boundary value problem for damped Kirchhoff-type wave equation with fractional Laplacian. First, existence and uniqueness local are established by Banach fixed point theorem. Then, global finite time blowup derived at subcritical critical energy levels. Finally, upper bound lower estimate given arbitrarily positive level.
Due to the growing interest using model predictive control (MPC), there are more and researches about applications of MPC on autonomous underwater vehicle (AUV), these mainly focused simulation simple application AUV. This paper focuses improvement based state space an Unlike previous approaches a fixed weighting matrix, in this paper, coefficient, varied with error, is introduced adjust increment vector matrix reduce settling time. Then, analysis effect adjustment stability given. In...
The trajectory tracking control problem is addressed for autonomous underwater vehicle (AUV) in marine environment, with presence of the influence uncertain factors including ocean current disturbance, dynamic modeling uncertainty, and thrust model errors. To improve accuracy AUV, an adaptive backstepping terminal sliding mode based on recurrent neural networks (RNN) proposed. Firstly, considering inaccurate thruster, a Taylor's polynomial used to obtain And then, uncertainty errors are...
The joint control problem of the underwater manipulator is addressed in this paper, under influence uncertainty factors such as model uncertainty, external disturbance, and lag. In general, for factors, it usually approximated online, but difficult to select a reasonable value approximation error boundary, too conservative estimated values would cause chattering easily. And lag on should be considered actual work. Unlike most previous method, function technique (FAT), which uses Legendre...
For long-term missions in complex seas, the onboard energy resources of autonomous underwater vehicles (AUVs) are limited. Thus, consumption reduction is an important aspect study AUVs. This paper addresses using model predictive control (MPC) based on state space AUVs for trajectory tracking control. Unlike previous approaches, which use a cost function that consists quadratic deviations predicted controlled output from reference and input changes, term (i.e., input) introduced into this...
A novel underwater long-arm manipulator (ULAM) and its improved small-flow hydraulic driving system (SHDS) are presented in this article for small autonomous vehicle (AUV). In the process of design, a joint device consisting linear cylinder, three-bar linkage, four-bar linkage mechanism is developed to allow be folded. Since much long, angle deviation would result large end-effector's position deviation. To solve problem, with circulation closed loop proposed. And manipulator,...
This paper investigates the finite-time tracking problem for autonomous underwater vehicles (AUVs) in presence of external disturbance and modelling uncertainty. A control scheme is proposed based on an improved non-singular terminal sliding mode manifold. Firstly, order to achieve stability avoid singular problem, a continuous smooth manifold designed piecewise function. And then law by indirectly estimating bound general uncertainty, compensate Based Lyapunov analysis, it verified that...
An optimization design method in the preliminary stage using aeroelastic performance indexes as constraints is proposed to wing stiffness and build primary model. A beam-frame structure model with a high aspect ratio an example built. Stiffness distribution of main beam designed by engineering estimation obtain Because comparative precise, three-dimensional introduced reference for comparison two methods. Static responses are calculated, advantage our verified through comparing analyzing....
<p indent="0mm">As dynamic growth engine of the economy China, Yangtze River Delta (YRD) region is one most densely populated regions around globe with advanced industrial cluster and developed transportation network, which has brought problem high intensity air pollutant emissions including nitrogen oxides (NO<sub><italic>x</italic></sub>), volatile organic compounds (VOCs), etc. Although PM<sub>2.5</sub> quality tremendously improved in recent years, ozone concentration showed an...
In this paper, an adaptive multiple-model controller is developed for nonlinear systems in parametric-strict-feedback form.Unlike the previous results, a switching scheme not required here to switch most appropriate model into design.The new reduces number of identification models and uses information provided by all more efficiently than results using convex combination estimates parameters.The method guarantees parameter convergence global asymptotic stability closed-loop system.The...
Digital PID control is one of the most widely used methods in manufacturing process. Based on analysis algorithm, system has designed and simulated incremental controller using LPM macro module built-in FPGA,and also PWM module. The combination two modules can be for a variety applications. results show that design feasible correct.
Multi-body aircraft is a new concept consisting of multiple small unmanned aerial vehicles hinged-connected by wing tips. This can integrate the performance and advantages two types flying platforms: high-altitude long endurance vehicles. It has great development potential. Based on Newton-Euler equation lifting line method, it establishes multi-body flight dynamics model, analyzes trim stability characteristics system that allowing relative degree freedom rolling motion with dual-aircraft...