support of the National Natural Science Foundation of China(No.12032012);the Priority Academic Program Development of Jiangsu Higher Education Institutions,China。
To achieve high-precision trajectory following during helicopter maneuver tasks and reduce the disruptive influences of unknown variabilities,this study introduces a cascaded-loop helicopter trajectory tracking contro...
The transmission system is a critical power component of helicopters, playing an indispensable role in power transmission. Among its key elements, the planetary gear system is an essential part of the helicopter trans...
supported in part by the National Natural Science Foundation of China(No.12032012);the Key Discipline Construction Project of Colleges and Universities in Jiangsu Province.
To enhance the stability of helicopter maneuvers during task execution,a composite trajectory tracking controller design based on the implicit model(IM)and linear active disturbance rejection control(LADRC)is proposed...
supported by the Na‑tional Natural Science Foundation of China(No.52075241);the National Key Laboratory of Science and Technology on Helicopter Transmission(Nanjing University of Aeronau‑tics and Astronautics)(Nos.HTL-A-22K04 and HTL-O21G13).
The intermediate gearbox of a helicopter operates under splash lubrication.If the bearing produces metal particles due to insufficient lubrication or wear,whether it can be adsorbed by the metal particles signal at th...
The active vibration control technology has been successfully applied to several helicopter types.However,with the increasing of control scale,traditional centralized control algorithms are experiencing significant in...
As the elevator and rudder can be used actively for control,in addition to the rotors,Coaxial High-speed Helicopters(CHHs)have the problems of control redundancy and changing control authority in the transition mode.T...
supported by the National Key Research and Development Program of China(No.2021YFB3400100).
Noise reduction program design is an effective approach that relies on efficient noise prediction for reducing ground noise during flight.The existing noise prediction methods have the limitations of being computation...
co-supported by the National Natural Science Foundation of China(Nos.62022060,62073234,62073158,62373268,62373273);the Basic Research Project of Education Department of Liaoning Province,China(No.LJKZ0401).
The helicopter Trailing-Edge Flaps(TEFs)technology is one of the recent hot topics in morphing wing research.By employing controlled deflection,TEFs can effectively reduce the vibration level of helicopters.Thus,desig...
partially supported by the DEEPCOBOT project under Grant 306640/O70 funded by the Research Council of Norway.
In this paper,we consider a 2-degrees-of-freedom(DOF)helicopter system subject to long input delays and uncertain system parameters.To address the challenges including unknown system parameters and input delays in con...
Fault detection of non-linear systems is of great importance in control systems reliability.Undetected faults could lead to irreparable damage.This paper deals with fault diagnosis of helicopter system in the presence...