固体火箭技术2025，Vol.48Issue(5)：723-732,10.DOI:10.7673/j.issn.1006-2793.2025.05.010
压实动程与保压时间可调控的软硬混编预制体压实控制策略
A compacting control strategy for soft-hard mixed perform with adjustable movements and holding time
摘要
Abstract
In response to the problem that the"applying-holding-releasing"load cannot be accurately controlled during the com-paction process of a soft-hard mixed preform,based on the working principle of the soft-hard mixed preform compaction device,a control strategy was proposed with adjustable the compaction movements and holding time.An electromechanical transmission system that satisfied the"stop-rise-stop"motion law was construct,and the modified cycloid function was used to transform the uniform rota-tion of the control shaft into periodic variable speed motion of the bottom microporous plate.Based on the speed ratio coefficient kc,a parametric model of variable-speed motion for servo motors was established,which systematically revealed the influence laws of dif-ferent kc on the displacement,velocity and acceleration of the bottom microporous plate.Considering both the compaction efficiency and mechanical properties,different speed ratio coefficients should be selected at different compaction stages.At the initial stage of compaction,a smaller kc should be chosen,while at the final stage,kc should not exceed 0.6.The model parameter control method was further determined,and different movement laws of the microporous plate was obtained by adjusting the coefficients,achieving accu-rate output of mechanical parameters and meeting the full-cycle compaction requirements.The compaction experiment shows that in the process of preform,the compaction based on the dynamic control strategy of compaction movements and holding time can achieve basically the same effect as that under artificially ideal compaction data,and the maximum deviation between the two is 8.15%,which meets the actual process requirements.关键词
压实动程/保压时间/可调控/修正摆线函数/软硬混编预制体/压实控制策略Key words
compaction movements/holding time/adjustable/corrected cycloidal function/soft-hard mixed preform/compacting control strategy分类
航空航天引用本文复制引用
梅宝龙,董九志,邢力鹏,蒋秀明..压实动程与保压时间可调控的软硬混编预制体压实控制策略[J].固体火箭技术,2025,48(5):723-732,10.基金项目
省部级项目(15ZSZDGX00840 （）
18JCYBJC20200). （）
