Research On High-precision Control Of Shipborne Rocket Launcher Based On Internal Model Anti-disturbanc

With the rapid evolution of contemporary war modes,the accuracy requirements of shipborne rockets are also improving.In this paper,the attitude disturbance isolation design of the AC servo system of shipborne rocket is carried out,and the position velocity double loop control strategy is studied to improve the accuracy of shipborne rocket.The main work of this paper is as follows:(1)The principle and architecture of shipborne rocket AC servo system are studied.Based on SPMSM model,the mathematical model of servo system is constructed,and the nonlinear and uncertain factors are studied.(2)For the attitude disturbance of servo system,the active compensation technology based on servo system platform is used.The basic model of disturbance angle and angular velocity is constructed by using Euler angle solution model and coordinate system projection law.The simulation results verify the correctness and feasibility of attitude disturbance model.(3)Aiming at other nonlinear and uncertain factors of servo system,an internal model control strategy based on new RBF neural network is designed in the speed loop.The DBSCAN algorithm and the improved gray wolf optimization algorithm are used to adjust the initial parameters and train the new RBF neural network online.In order to further improve the control performance of the system,the ADRC strategy is introduced into the position loop,and the new RBF neural network is used to adjust its parameters on-line;At the same time,a chaotic particle swarm optimization algorithm with improved inertia weight is introduced to optimize the new RBF neural network.The simulation results show that the strategy is helpful to improve the control accuracy and anti-interference performance of the system.(4)With the help of hardware in the loop simulation platform,targeted experimental work is carried out on the control strategy proposed in this paper.The experimental results show that the control strategy constructed in this paper meets the performance index and can meet the needs of high-precision control of shipborne rocket launcher.