Motion Control Performance Analysis of Nose Cone of Variant Aircraft
Currently,a diverse array of design schemes for morphing nosecone mechanism exists;however,re-search on control strategies for variant head cones is lacking.A 2(3RSH/3RRR)morphing nosecone mecha-nism is proposed to improve the motion performance of the head-cone of the variant aircraft under external load conditions,and the position analysis and kinematic characteristic analysis are carried out.The block diagram of the morphing nosecone mechanism is constructed using the Simulink/SimMechanics toolbox,and the fuzzy PID control system and BP neural network PID control system are established.The control performance of conven-tional PID,fuzzy PID and neural network PID is compared under two distinct external environments:no-load and random variable load.The simulation is configured with two expected trajectory types—step and sine to as-sess performance.The experimental results show that the adaptability and robustness of intelligent control are far better than that of conventional PID.Among them,fuzzy PID control has the best control performance for morphing nosecone mechanism and can meet the control requirements under different working conditions.
NETL
NSTL
万方数据
维普
