参数扰动广义混沌同步化线谱控制技术研究

摘要

Line spectra are the most visible signs of marine vessel radiate noise spectra,they can be detected, tracked and identified with passive sonar.Since the features of line spectra can not be changed with a traditional isolation system,and hence they are harmful to the acoustic stealth of marine vessels.According to the principle of the line spectra chaotification method and the characteristics of a vibration isolation system,a new method of generalized chaos synchronization based on parameter perturbing was introduced.The numerical simulation results showed that this method can make a system vibration change into a chaotic state under the condition of tiny energy;furthermore,its line spectra intensity is weakened and its line spectra structure is changed;the effectiveness of the proposed method is verified.%舰船辐射水声线谱是被动声纳进行目标参数估计和类型识别的主要依据，传统的隔振系统无法改变系统线谱特征，对舰船的隐身性能构成了严重危害。根据线谱混沌化原理和舰船隔振系统的特点，提出了参数扰动广义混沌同步化线谱控制方法，能够使系统在小能量条件下转变为混沌运动状态，达到削弱线谱强度和改变频谱结构的目的，数值仿真验证了该方法的有效性。