基于PID参数优化控制的伞钻液压系统仿真分析  

Simulation analysis of hydraulic system of parachute drillbased on PID parameter optimization control

作　　者：张磊 ZHANG Lei(School of Mechanical and Electrical Engineering,Henan Universityof Science and Technology,Zhoukou 466000,China)

机构地区：[1]河南科技职业大学机电工程学院,河南周口466000

出　　处：《机电工程》2020年第12期1530-1534,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51875385);河南省社科联资助项目(SKL-2018-1956)。

摘　　要：针对传统液压伞钻的钻孔定位中,人为因素对定位精度影响大、调整时间长、自动化程度低、工作效率不高的问题,以YSJZ4.8全液压四臂伞钻为研究对象,采用PID算法,对液压伞钻的液压系统进行了优化。对液压缸采用了闭环控制,基于遗传算法对PID参数进行了优化,并通过阶跃信号对参数优化后系统进行了仿真分析;建立了虚拟样机动力学仿真模型,获得了位姿改变过程中活塞杆位移与液压缸负载的变化情况,对优化系统施加了变负载,分析、比较了活塞杆真实位移与理论值之间的差异。研究结果表明:经优化设计后的液压系统具有较高的稳定性及快速响应性,对变负载具有较高的位置控制精度,可满足伞钻的实际工作要求。Aiming at the problem that at the traditional drilling positioning of hydraulic parachute drill,human factors had great influence on positioning accuracy,adjustment time,level of automation and efficiency,taking YSJZ4.8 full hydraulic four arm umbrella drill as the research object,PID algorithm was used to optimize the hydraulic system of the hydraulic parachute drill.The closed-loop control was adopted in the hydraulic cylinder.PID parameters were optimized based on genetic algorithm,and the system was simulated and analyzed by step signal.The dynamic simulation model of virtual prototype was established to obtain the change of piston rod displacement and hydraulic cylinder load during the change of position and orientation.The variable load was applied to the optimization system to compare and analyze the difference between the real displacement of piston rod and the theoretical value.The results indicate that the optimization system has high stability and fast response,and has high position control accuracy for variable load,which meets the requirements of umbrella drilling.

关 键 词：液压伞钻 液压系统 活塞杆位移 ADAMS 仿真分析 

分 类 号：TH137[机械工程—机械制造及自动化] TH134