新型高速数字开关阀为导阀的多路换向阀  

Multi-way directional valve with new fast digital on-off pilot valve

作　　者：郜立焕[1] 生凯章[1] 周刚 王佃武[1] 薛长英 

机构地区：[1]兰州理工大学流体动力与控制学院,甘肃兰州730050 [2]深圳市大族激光科技股份有限公司,广东深圳518057 [3]青海桥头发电厂,青海西宁810000

出　　处：《兰州理工大学学报》2006年第3期56-58,共3页Journal of Lanzhou University of Technology

摘　　要：为了改善工程机械工作装置的操纵性,对传统的电液比例多路换向阀进行了数字化改造.采用高速数字开关阀取代传统电磁比例减压阀作为压力先导控制部分,研究分析了对高速数字开关阀直接进行控制的脉宽调制(PWM)控制方式,验证了该改造原理的可行性,提高了工程机械工作装置液压系统的可靠性,增加了系统的抗干扰能力.In order to improve the maneuverability of operational devices on off-highway vehicles, the traditional multi-way directional valve with electro-hydraulic proportional control was remodeled digitally. A digital high-speed on-off valve was substituted for the traditional electro-hydraulic proportional reducing valve as pressure-pilot control part. The pulse width modulation （PWM） control strategy for directly controlling this fast digital on-off valve was investigated and analyzed. The validity and feasibility of the remodeling principle was verified, the reliability of the hydraulic system of the operational devices on offhighway vehicles improved, and the anti-interference capability of the system increased.

关 键 词：数字武多路换向阀 高速数字开关阀 PWM 

分 类 号：TH137.9[机械工程—机械制造及自动化]