静力试验中水载荷控制过程建模与仿真  

Modeling and Simulation of Water Load Control Process in Static Test

作　　者：牧彬[1,2] MU Bin(The Sixteenth Research of Aircraft Strength Research Institute of China,Shanghai 201323,China;National Key Laboratory of Strength and Structural Integrity,Xi′an 710065,Shaanxi,China)

机构地区：[1]中国飞机强度研究所十六室,上海201323 [2]强度与结构完整性全国重点实验室,陕西西安710065

出　　处：《工程与试验》2024年第3期35-37,共3页Engineering and Test

摘　　要：针对结构静力试验中极小载荷多点协调程控加载的需求,提出了以慢速比例阀为执行结构、水箱内液体重力为控制目标的试验方法,建立了水载荷控制模型。为提高试验控制系统的响应速度,设计了直接数字量控制算法并与经典PID控制算法进行了对比。仿真结果表明,该试验方法能够实现静力试验中极小载荷闭环控制,直接数字量控制算法优于经典PID控制算法。Aiming at the requirement of multi-point coordinated program-controlled loading under minimal load in structural static tests,a test method with slow proportional valve as execution structure and liquid gravity in water tank as control target is proposed,and a water load control model is established.In order to improve the response speed of the test control system,a direct digital control algorithm is designed and compared with the classical PID control algorithm.The simulation results show that the test method can realize the closed-loop control of minimal load in static tests,and the direct digital control algorithm is superior to the classical PID control algorithm.

关 键 词：静力试验 水载荷 控制 建模 仿真 

分 类 号：V216.1[航空宇航科学与技术—航空宇航推进理论与工程]