摘要
运载火箭姿态控制采用的PD控制存在控制精度不高、适应性差的问题,以俯仰通道为例,对现有的变论域模糊控制方法进行简化,通过对一般控制系统响应曲线的分析,制定了完善、简单、客观且具有解释性的模糊规则。考虑到模糊控制对弹性振动的鲁棒性较差,利用粒子群优化算法设计校正网络,实现对贮箱晃动和弹性振动的抑制。对PD控制、传统变论域模糊控制和简易型变论域模糊控制进行额定状态下的仿真,仿真结果表明,简易型变论域控制精度和对外扰动的鲁棒性明显优于PD控制和传统变论域模糊控制。
PD control used in attitude control of launch vehicle has the problems of low control accuracy and poor adaptability.Taking pitch channel as an example,considering the subjectivity of traditional variable universe fuzzy rules,the existing variable universe fuzzy control method is simplified.Through the analysis of response curve of general control system,perfect,simple,objective and interpretive fuzzy rules are formulated.Considering the poor robustness of the fuzzy control to the elastic vibration,the particle swarm optimization algorithm is used to design the correction network to achieve the suppression of the tank sloshing and the elastic vibration.The simulation results of PD control,traditional variable universe fuzzy control and simple variable universe fuzzy control under rated state show that the accuracy and robustness of simple variable universe control are better than PD control and traditional variable universe fuzzy control.
作者
陈亚军
Chen Yajun(University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《农业装备与车辆工程》
2021年第12期61-65,共5页
Agricultural Equipment & Vehicle Engineering
关键词
姿态控制
变论域
粒子群
attitude control
variable universe
particle swarm
