摘要
传统的大型油压机的传动系统效率和控制精度较低。在节能降耗、低碳环保的理念下,高精度泵控技术与高性能油压机控制系统的融合问题,目前已经得到了业界的广泛关注。为了提高开式径向变量柱塞泵控油压机系统的位置控制精度,设计了自适应模糊PID控制策略,并对不同工况下的快锻系统特性进行了研究。首先,建立了数字控制增强型径向柱塞泵、开式泵控非对称缸的数学模型,推导了开式径向变量柱塞泵控油压机系统的数学模型,并设计了自适应模糊PID控制器;然后,通过AMESim-Simulink联合仿真,对不同工况下带载快锻系统的控制特性展开了仿真研究;最后,依托0.6 MN泵控油压机实验测试平台,验证了自适应模糊PID的有效性以及快锻系统的控制特性。研究结果表明:在快锻频率为1 Hz、行程为20 mm、负载为1.2×10^(5)N和快锻频率为0.5 Hz、行程为40 mm、负载为2.0×10^(5)N的2种工况下,开式径向变量柱塞泵控油压机引入自适应模糊PID控制系统后,其具有运行平稳、响应迅速的特点,且位置精度误差均小于0.5 mm。上述结果验证了开式径向变量柱塞泵控油压机联合仿真模型的正确性和控制器的有效性。
The transmission system efficiency and control accuracy of traditional large hydraulic press are low.Under the concept of energy saving,low carbon and environmental protection,the integration of high-precision pump control technology and high-performance hydraulic press control system has been widely concerned by the industry.In order to solve the problem of insufficient position control accuracy of open radial variable piston pump-controlled hydraulic press system,an adaptive fuzzy PID control system was designed,and the characteristics of fast forging system under different working conditions were studied.Firstly,the mathematical models of the digital control enhanced radial piston pump and the open pump controlled asymmetric cylinder were established,the mathematical model of the open radial variable piston pump controlled hydraulic press system was derived,and the adaptive fuzzy PID controller was designed.Then,the simulation study of the fast-forging control characteristics under different working conditions was carried out by AMESim-Simulink simulation.Finally,based on 0.6 MN pump-controlled hydraulic press platform,the effectiveness of adaptive fuzzy PID and the control characteristics of the fast-forging system were verified.The results show that under the two working conditions of fast forging frequency of 1 Hz,stroke of 20 mm and load of 1.2×10^(5)N,and fast forging frequency of 0.5 Hz,stroke of 40 mm and load of 2.0×10^(5)N,the open radial variable piston pump-controlled hydraulic press system with adaptive fuzzy PID control operates stably,responds quickly,and the position accuracy error is less than 0.5 mm.The validity of the simulation model and the effectiveness of the controller of open radial variable piston pump-controlled hydraulic press are verified.
作者
侯雪坤
褚泽斐
刘岩
陈文婷
巴凯先
HOU Xuekun;CHU Zefei;LIU Yan;CHEN Wenting;BA Kaixian(College of Integrated Traditional Chinese and Western Medicine,Hebei University of Chinese Medicine,Shijiazhuang 050100,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China)
出处
《机电工程》
CAS
北大核心
2023年第10期1535-1542,共8页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金青年科学基金资助项目(52205071)
河北省自然科学基金资助项目(E2022203002)。
