摘要
由于舰船转动惯量较高,使得舵效响应与航向调整存在显著时间延迟,难以将突变的航向指令转化为加速度受限的平滑指令,导致舵角变化范围较大。为此,设计高速巡逻大惯性舰船航向自适应调节方法。将不确定因子引入舰船舵角的期望运动方程中,引入平滑期望航向角度,将突变的航向指令转化为加速度受限的平滑指令。为抑制惯性系统对突变指令的过激响应,引入平滑期望航向角度并采用二阶滤波算法。通过扩张状态观测器分离漂角并修正,利用漂角估计设计滑膜调节规律,减少系统收敛误差,基于李亚普诺夫稳定性进行参数自适应,确保航向误差收敛,定义饱和函数给出航向稳定性调节规律,实现高效稳定的航向调节。测试结果显示:所提方法降低了艏摇波动的幅度与频率,调节后实际航向角与期望航向角之间的偏差值均极小,舵角变化范围最小。
Due to the high moment of inertia of the ship,there is a significant time delay in the rudder effect response and heading adjustment.It is difficult to convert the sudden heading instructions into smoothing instructions with limited acceleration,resulting in a large range of rudder Angle variation.Therefore,a course adaptive adjustment method for highspeed patrol large-inertia ships is designed.Introduce the uncertainty factor into the expected motion equation of the ship's rudder Angle,introduce the smoothed expected heading Angle,and transform the sudden heading command into an acceleration-constrained smoothed command.To suppress the excessive response of the inertial system to sudden instructions,a smoothed expected heading Angle is introduced and a second-order filtering algorithm is adopted.The drift Angle is separated and corrected by expanding the state observer.The sliding film adjustment law is designed by using the drift Angle estimation to reduce the system convergence error.Parameter adaptation is carried out based on Lyapnov stability to ensure the convergence of heading error.The saturation function is defined to give the heading stability adjustment law to achieve efficient and stable heading adjustment.The test results show that the proposed method reduces the amplitude and frequency of the bow swing.After adjustment,the deviation values between the actual heading Angle and the expected heading Angle are extremely small,and the variation range of the rudder Angle is the smallest.
作者
武雪峥
许强
姜秀玲
李雪颖
WU Xuezheng;XU Qiang;JIANG Xiuling;LI Xueying(Huanghe Jiaotong University,Jiaozuo 454950,China;North China University of Water Resources and Electric Power,Zhengzhou 450045,China)
出处
《舰船科学技术》
北大核心
2025年第21期32-36,共5页
Ship Science and Technology
