Research On Stability And Control Of Carrier-borne Aircraft Traction System

The carrier-borne aircraft traction system is one of the most basic and important systems in the aircraft carrier systems.As the engine of the carrier-based aircraft is unsuitable for low-speed operation,the tractor is required to assist in the movement process.Affected by the marine environment,the carrier-borne aircraft traction system is prone to unstable phenomena such as tail flicking,sideslip,and folding during towing operations,which directly affects the transport efficiency and safety of carrier-based aircrafts.This paper talks about the driving characteristics of the carrier-borne aircraft traction system,which have been put on a the 6-DOF motion platform to simulate sea conditions.In order to solve the unstable working condition of dynamic base traction system,the stability control method is proposed.Firstly,the motion state of the sea and the motion of ships are described,and then according to the right-hand Cartesian rule,the carrier-borne aircraft traction system have be described by use the coordinate transformation method;secondly,considering the impact of ship motion on the tires,the traction system tire model is established.Newton-Euler method is used to analyze the cornering force of the front and rear tires of the tractor and the tires at the rear landing gear of the carrier aircraft;lastly,due to the time-varying motion of the ship hull,it is necessary to analyze the variation of gravity component of the carrier-borne aircraft traction system in three coordinate axes,the driving force and the resistance of the system,and considering the force on the hinge point of this system,the nonlinear dynamic equation of the system model is established according to the Lagrangian method.At the same time,the virtual prototype model of the carrier-borne aircraft traction system is established in Adams to provide a basis for the subsequent analysis and research of the driving characteristics of the traction system.The driving characteristics of the traction system are analyzed,including the causes of the system’s yaw movement and the possible influencing factors are analyzed and the evaluation indexes of the traction motion driving characteristics;In order to establish different sea conditions operating environments,the road model and the virtual prototype model of the carrier-borne aircraft traction system are established and have been placed on the 6-DOF motion platform in Adams,and the simulation have been carried out;simulating the linear and steering traction motion of the tractor under various working conditions,and then according to the evaluation index,the driving law of carrier aircraft traction system under different working conditions is obtained.In view of the uncertainty of the structural parameters of the carrier aircraft and the marine environment,based on the steering mechanism and articulated structure of the tractor,determine the desired yaw rate and waist angle as the control target.Taking the integrated control strategy of tractor front wheel active steering and direct yaw moment control as the control mode,design the stability controller of the carrier-borne aircraft traction system.Through the use of the virtual test platform established in Adams,combined with the MATLAB/Simulink module for debugging and verification of the manufacturing method,and the motion state of The Carrier-borne aircraft traction system is analyzed to verify the rationality of the designed control method according to the output variable curve of the control.Based on the 6-DOF motion platform,this paper analyzes the traveling characteristics of the carrier-borne aircraft traction system.Through Adams simulation analysis,the traveling characteristic curves of the carrier-borne aircraft traction system under various working conditions are obtained,and the simulation is performed with MATLAB/Simulink,to verify the effectiveness of the designed controller,which provides a scientific reference for the related research on the stability of carrier-borne aircraft traction system.