差分方程在船舶电液比例阀控缸机构建模方法
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摘要
为了克服海洋环境中巨型波浪的恶劣环境,需要为船舶配备升沉运动补偿系统。当前船舶通用的补偿系统是基于一定的控制算法控制液压系统进行广义补偿,使得平台的广义升沉运动大幅度下降,并消除或减弱由波浪引起的船舶横向摇动和纵向摇动。本文主要使用电液比例原理建立电液比例阀控缸机构模型以及升沉补偿系统的数学模型,并用系统识别技术建立了差分方程模型。通过各机构相互的位移及受力模型,解决了船舶升沉补偿系统滞后大、惯性大的问题。
In order to resist harsh environment of great waves in in oceans, the ships need to be equipped with heave motion compensation system. Currently, universal compensation systems onboard are generalized compensations based on certain control algorithms, which bring the platform's generalized heave motion down by a large margin, and remove or weaken the side shake and vertical shake caused by the waves. This paper first builds an electro-hydraulic proportional valvecontrolled cylinder model based on electro-hydraulic theory and builds a difference equation model through system identification system. The model solves the problems of long delay and huge inertia via shift and force model between modules.
In order to resist harsh environment of great waves in in oceans, the ships need to be equipped with heave motion compensation system. Currently, universal compensation systems onboard are generalized compensations based on certain control algorithms, which bring the platform's generalized heave motion down by a large margin, and remove or weaken the side shake and vertical shake caused by the waves. This paper first builds an electro-hydraulic proportional valvecontrolled cylinder model based on electro-hydraulic theory and builds a difference equation model through system identification system. The model solves the problems of long delay and huge inertia via shift and force model between modules.
引文
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[4]余祖耀,陈壮.基于S7-300的比例阀控液压缸的PID静态补偿控制[J].机械与电子,2016(4):43-46+50.
[5]刘佳晨,麦云飞,顾凯凯.转向器综合试验台加载系统多余力抑制研究[J].机械科学与技术,2013(5):683-687.
[6]黄卉,程顺.电液比例阀控位置系统的计算机仿真[J].现代机械,2000(4):12-14.
[2]赵静一,程斐,郭锐,等.自行式载重车悬架升降电液同步驱动控制研究[J].中国机械工程,2014(9):1-11.
[3]姜继海,刘乔,侯珍秀.直驱式转叶舵机的特点及关键技术[J]液压与气动,2014(9):1-11.
[4]余祖耀,陈壮.基于S7-300的比例阀控液压缸的PID静态补偿控制[J].机械与电子,2016(4):43-46+50.
[5]刘佳晨,麦云飞,顾凯凯.转向器综合试验台加载系统多余力抑制研究[J].机械科学与技术,2013(5):683-687.
[6]黄卉,程顺.电液比例阀控位置系统的计算机仿真[J].现代机械,2000(4):12-14.