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基于一种直动式海水液压溢流阀的结构以及数学模型展开了相关的数值分析.首先,采用现代控制方法获得该阀的状态方程,并结合经典工程控制理论获得溢流阀的传递函数模型;其次,采用Routh稳定性判据对阀的稳定性做出了判定,并做了相对稳定性分析;最后,通过仿真分析获得了该阀的动态特性曲线以及上升时间等动态特性参数,同时对阀在脉动流量输入条件下的动态性能进行了仿真.仿真分析结果表明,该海水溢流阀稳定性能满足要求,且有比较强的环境适应性.
Based on the structure and mathematical model of a direct acting sea hydraulic relief valve, the numerical analysis is carried out.First, the state equation of the valve is obtained by the modern control method, and the transfer function model of the relief valve is obtained according to the classical engineering control theory Secondly, the stability of the valve is judged by the Routh stability criterion and the relative stability analysis is made. Finally, the dynamic characteristics of the valve and the ascending time are obtained by simulation analysis. At the same time, The dynamic performance of the valve under pulsating flow is simulated.The simulation results show that the stability of the seawater relief valve meets the requirements and has strong environmental adaptability.