摘要
为解决垂直冲击试验台负载质量大,且易产生二次冲击的问题,针对试验台液压控制系统的关键技术要求,设计了一种双液压缸位置同步控制系统和快速反弹制动系统。首先,根据试验台的关键技术指标,综合考虑了实际工况与经济性等因素,设计出了液压控制系统原理图;然后,针对同步控制系统,利用Simulink软件设计了模糊控制器及同步控制算法模型,同时利用AMESim软件搭建了液压系统仿真模型,并对两个模型进行了联合仿真,针对反弹制动系统,利用AMESim软件进行了建模和仿真;最后,对比了模糊PID控制与常规PID控制的仿真结果;设计制造了大型垂直冲击试验台,进行了实际测试,验证了仿真结果的正确性。研究结果表明:针对实际工况下模糊PID控制方式的同步误差最大为0.09 mm,满足0.2 mm的同步精度要求,采用模糊PID控制方式对比常规PID控制方式,其有较高的同步控制精度与较强的鲁棒性;采用比例伺服阀加插装阀驱动制动器,使工作台进入快速制动的工作模式,整体响应时间为63 ms,满足100 ms的制动生效时间要求;实际同步控制系统最大同步误差为0.11 mm,满足性能指标,验证了控制方案与仿真的正确性。
To solve the problem of large load and easy secondary impact on the vertical impact test bench,a dual hydraulic cylinder position synchronization control system and a fast rebound braking system was designed to meet the key technical requirements of the hydraulic control system of the test bench.Firstly,based on the key technical indicators of the test bench,taking into account factors such as actual working conditions and economy,a schematic diagram of the hydraulic control system was designed.Then,for the synchronous control system,a fuzzy controller and synchronization control algorithm model was designed using Simulink software.At the same time,a hydraulic system simulation model was built using AMESim software,and the two models were jointly simulated.The rebound braking systems were modeled and simulated using AMESim software.Finally,the simulation results of fuzzy PID control and conventional PID control were compared.A large vertical impact test-bed was designed and manufactured,and the actual test was carried out,which verified the correctness of the simulation results.The research results show that the maximum synchronization error of the fuzzy PID control method under actual working conditions is 0.09 mm,meeting the synchronization accuracy requirement of 0.2 mm.The use of the fuzzy PID control method has higher synchronization control accuracy and stronger robustness than the conventional PID control method.The working mode of using proportional servo valve and plug-in valve to drive the brake for quick braking of the workbench,with an overall response time of 63 ms,meets the requirement of 100 ms of braking effective time.The maximum synchronization error of the actual synchronous control system is 0.11 mm,which meets the performance indicators and verifies the correctness of the control scheme and simulation.
作者
梁志鑫
王野牧
王能发
王展鹏
LIANG Zhixin;WANG Yemu;WANG Nengfa;WANG Zhanpeng(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China)
出处
《机电工程》
CAS
北大核心
2024年第11期2087-2097,共11页
Journal of Mechanical & Electrical Engineering
基金
辽宁省自然科学基金联合基金资助项目(面上项目)(2023-MSLH-241)。
