高速冲击试验台液压系统仿真分析

Simulation Analysis of Hydraulic System of High-speed Impact Test-bed

设计了高速冲击试验台液压控制系统;建立了系统模型并仿真分析了冲击试验台闭环位置控制系统的稳定性和动态特性。研究结果表明,高速冲击试验台液压系统采用液压泵和蓄能器组合动力源,具有高响应、大流量的特点,前馈补偿及加速度反馈的PID复合控制提高了系统的控制精度,液压控制系统冲击速度在250ms内达到4.137m/s,冲击加速度达到1200g,达到了试验台的控制要求。可以模拟大推力液压泥炮快速堵铁口而产生的冲击或其它各种高速冲击,检验铁口区域耐材和设备的抗冲击能力,降低铁口设备的损坏风险。

The hydraulic control system of high-speed impact test-bed is designed. The system model is established and the stability and dynamic characteristics of the closed-loop position control system are simulated and analyzed of the impact test-bed. The hydraulic system is composed of a combined power source of hydraulic pump and accumulator. The research results show that the system has the characteristics of high response and large flow. The PID compound control of feedforward compensation and acceleration feedback improves the control accuracy of the system. The impact speed reaches 4.137 m/s within 250 ms, and the impact acceleration reaches 1200 g. These meets the control requirements of the test-bed. The test-bed can simulate various high-speed impacts, including the impact caused by the rapid blockage of the taphole of the high thrust hydraulic clay gun. It can test the impact resistance of the refractory materials and equipment in the taphole area, and reduce the damage risk of the iron tap equipment.