液压软管脉冲试验机电液伺服系统的设计与研究  

The Design and Research on Electro-hydraulic Pressure Servo-control System for a High Pressure Hose Pulse Test Machine

作　　者：吴晓明[1] 张晓明[1] 

机构地区：[1]燕山大学河北省重型机械流体动力传输与控制实验室,河北秦皇岛066004

出　　处：《液压与气动》2015年第7期111-115,共5页Chinese Hydraulics & Pneumatics

摘　　要：随着我国飞机、汽车、工程机械的快速发展,对液压系统的管路及附件的耐压性、抗冲击性及其可靠性提出了更高的要求。根据对液压软管的液压脉冲实验要求设计了液压软管压力脉冲试验机电液伺服系统,并针对正弦波、水锤波的不同类型输入信号对系统进行了仿真研究,根据试验机周期性测试任务以及电液伺服系统非线性的特点,采用了重复控制和PID控制的复合控制策略,仿真结果表明此控制方法可以提高压力跟踪精度、动态特性和系统的鲁棒性。通过设计基于Lab VIEW虚拟仪器和PLC的测控系统,对系统进行实验研究。仿真结果和实验结果研究相比表明,所设计的液压伺服系统可以满足用户提出的严格测试要求。With the rapid development of China＇ s aircraft, automobiles, engineering machinery, a higher reliabili- ty, pressure resistance, impact resistance for the hydraulic pipes and accessories are raised. Based on the hydraulic hose and hydraulic impulse test requirements, the hydraulic hose pressure impulse test machine and hydraulic pres- sure servo system are designed. For the different types of the input signal such as the water hammer wave, the sine wave, the system simulation is studied. According to periodic testing tasks of the test machine and non-linear char- acteristics of electro-hydraulic servo system, the repetitive control and PID hybrid control strategy is used. The sim- ulation results show that this control method can improve the accuracy of pressure tracking robustness, dynamics and systems robustness. By the virtual instruments software LabVIEW and PLC control system, the system is exper- imented and studied. The simulation and experimental results show that the designed hydraulic servo system can meet the rigorous testing requirements of users.

关 键 词：脉冲试验机 压力伺服控制 阀控非对称缸 重复控制 测控系统 

分 类 号：TH137[机械工程—机械制造及自动化]