Simulation And Control Research Of Flight Simulator With 6-DOF Motion Platform Based On FLIGHTLAB

Nowadays, the use of flight simulation in both civil aviation and military training is commonplace and widely accepted. These simulators allow flight crews to practice potentially life-threatening manoeuvre in the relative comfort of a training centre and simulation of real aircraft behaviors. Flight simulator not only plays an important role in pilot training, designers can also use the simulator to assembly, integration, and evaluation of the aircraft. Compared with flight test on real aircraft, the flight test on simulator is controllability, non-destructive, economy, etc. The 6-dof motion platform plays an important role in flight simulator, which focused on replication of the actual aircraft to provide high fidelity of flight simulator for the pilots.According to the design requirements of flight simulator, kinematical analysis,structural design and movement simulation of 6-dof motion platform have completed. A6-dof motion platform 3D model based on Stewart platform was developed by Pro/E. A pilot is an aircraft experiences linear motion along the three body axes of the aircraft and angular motion about these three axes. A synergistic motion platform provides three linear accelerations: heave(vertically), sway(laterally) and surge(longitudinally) and three angular accelerations: pitch, roll and yaw, giving rise to the expression ‘six degrees of freedom’ or 6-DOF, in describing the motion platform dynamics. Completed kinematical analysis includes position inverse kinematics and positive kinematics, velocity and acceleration analysis and Jacobian etc. All the work has made a good foundation for structural design and developing 3D model of 6-dof motion platform.3D parts of 6-dof motion platform have been defined in Assembly,so that the model can motion by the way of rotation or translation. And then kinematical analysis was completed by Pro/Mechanism. The simulation results proved the designed 6-dof motion platform is feasible.Analysis of human motion sensors have shown the limits of the brain to detect motion.Building human motion model to reduce or simplify the motion applied to a simulator platform. Filters was designed to match the combined response of the motion platform and pilot to the response of the aircraft and pilot. So with the motion washout algorithm can replicate airborne motion cues in a flight simulator.Design and simulation analysis of 6-dof motion platform have completed by Pro/E.And 3D modeling and kinematics simulation were carried out related modules based on Pro/E and Pro/Mechanism. FLIGHTLAB software is used to build dynamic model of fixed wing aircraft, because of its big advantages in flight simulation. So we can simulate the attitude of aircraft. After a flare maneuver was done, generate the aircraft attitude curves plan. And then compared to the curves result from MATLAB. The design of the 6-dof motion platform is verified reasonably and correctly.The research about the flight simulator with 6-dof motion platform, which includes kinematical analysis, physical design, motion simulation by Pro/Mechanism etc., provides useful reference for dimension synthesis of the other parallel kinematic mechanism similar to it. The methods in this paper can be applied to design and simulate the motion systems of simulators, such as automotive driving simulator, ship handling simulator, parallel robots and so on.