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Acta Armamentarii ›› 2025, Vol. 46 ›› Issue (7): 240651-.doi: 10.12382/bgxb.2024.0651

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Research on the Correction Capability of High-spin and Tail-controlled Correction Projectile Based on HBBO-LSTM Network

ZHOU Jie, WANG Liangming*(), FU Jian, WANG Yanqin, GUO Shouyu   

  1. School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
  • Received:2024-07-30 Online:2025-08-12
  • Contact: WANG Liangming

Abstract:

To rapidly and accurately calculate the correction command of high-spin and tail-controlled correction projectiles,a correction capability prediction model based on hyperband algorithm-Bayesian optimization-long short-term memory (HBBO-LSTM) network is proposed for the prediction problem of correction capability.A 7DOF ballistic model of the high-spin and tail-controlled correction projectile is established.It is numerically simulated using the Runge-Kutta method to generate a large amount of sample data.By analyzing the dataset,a preprocessing method based on Ramanujan’s approximation formula is proposed to preprocess the original dataset for obtaining the sample data with uniform spatial distribution.A HBBO-LSTM network prediction model is constructed,and the optimal structural parameters are obtained through training.A learning rate decay strategy combining cosine annealing with restart mechanism and exponential decay is proposed to ensure the speed and stability of training process.The proposed model is compared with the long short-term memory network,gated recurrent unit network and back propagation network models on the same test set through simulation.It is also evaluated against the numerical integration method for 4DOF correction projectile ballistic equation.The results show that the prediction accuracy of the HBBO-LSTM network model is superior to those of other models with an overall mean squared error of 0.17m2 and an overall mean absolute error of 0.33m.Additionally,the HBBO-LSTM model outperforms the numerical integration method in both computation time and prediction accuracy.This demonstrates that the HBBO-LSTM network model has high feasibility and reference value.

Key words: correction capability, ballistic correction projectile, tail-controlled projectile, long short-term memory network, hyperband algorithm, Bayesian optimization

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