高功率密度船舶舵机动态特性优化分析

Dynamic characteristic analysis and optimization of high power-density steering gear

舵机是船舶重要的装置,其性能的好坏对船舶的影响很大。针对由螺旋作动器和电液比例系统构成的高功率密度舵机,推导了高功率密度舵机的数学模型,采用最优控制理论,对系统进行了优化设计,采用MATLAB软件对优化前后的系统进行了动态仿真,分析了其动态特性。分析结果表明,经优化后的舵机能满足实际工况要求。

Steering gear is an important device on a ship,whose performance quality affects ship greatly. Aiming at high power-density steering gear which is composed of electro-hydraulic system and ball rotary-oscillating actuator,a mathematics model of the steering gear system is deduced. The system optimization design is carried out using optimization theory. Dynamic simulations of the pre and post optimized systems are made by MATLAB software to analyze dynamic characteristics. The analysis results show that the optimized steering gear can meet practical needs.