摘要
提出并设计了阀-泵并联变模式液压调速系统,其可以在不同的调速阶段,采用不同的控制模式,而且还可以调节泵控和阀控在联合调速中的权重比,以提高系统的综合调速性能。搭建了实验系统,进行了一个调速周期的实验研究。实验结果表明,在调速过程中,不同控制模式之间切换平滑,比例阀和变量泵的变化规律符合预期,阀-泵权重比设置合理,提高了调速系统的综合调速性能。阀-泵并联变模式控制,使阀控与泵控协调工作,提高了液压调速系统的灵活性和适应性,丰富了目前液压系统的调速方式。
We propose a hydraulic speed regulation system in valve-pump parallel variable mode control,which can adopt different control modes in different speed regulation stages,and also can adjust the weight ratio between pump control and valve control in speed control process,and then can improve comprehensive performances of speed.Then,an experimental system is built,and an experimental research on one speed regulation cycle is carried out.The experimental results show that during a speed adjustment process,the switching between different control modes is smooth,and the change rule of proportional valve and variable pump is in accordance with expectation,and the setting of valve-pump weight ratio is reasonable,and the proposed system can improve the comprehensive performance of speed governing systems.The valve-pump parallel variable mode control can make full use of advantages of valve control and pump control,and will make hydraulic control systems more flexible and suitable,and will enrich the current control schemes of hydraulic speed regulation systems.
作者
丁海港
张鹤
赵继云
王振兴
史继江
蔺超文
DING Hai-gang;ZHANG He;ZHAO Ji-yun;WANG Zhen-xing;SHI Ji-jiang;LI Chao-wen(School of Mechatronic Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221106;Mining Machinery Co.,Ltd.,of XCMG,Xuzhou,Jiangsu 221004)
出处
《液压与气动》
北大核心
2018年第12期15-18,共4页
Chinese Hydraulics & Pneumatics
基金
江苏省自然科学基金(BK20150186)
徐州市科技项目(KH17013)
关键词
液压调速系统
变模式控制
阀控
泵控
阀-泵权重比
hydraulic speed regulation systems
variable mode control
valve control
pump control
valve-pump weight ratio
作者简介
丁海港(1981—),男,安徽淮北人,讲师,博士,主要从事液压传动与控制等方面教学与科研工作。
