2D数字阀流量规划补偿死区研究

中国机械工程 ›› 2014, Vol. 25 ›› Issue (17): 2369-2374.

2D数字阀流量规划补偿死区研究

左强;李胜;阮健

浙江工业大学特种装备制造与先进加工技术教育部重点实验室，杭州，310014

出版日期:2014-09-10 发布日期:2014-09-22
基金资助:
国家自然科学基金资助项目(50975258);浙江省科技厅重大专项(2011C11059);浙江省大学生科技创新活动计划（新苗人才计划）资助项目(2012R403073）

Study on Flow Program Compensation Technology for Dead Zone of 2D Digital Valves

Zuo Qiang;Li Sheng;Ruan Jian

Key Laboratory of Special Purpose Equipment and Advanced Processing Technology,Ministry of Education,Zhejiang University of Technology,Hangzhou,310014

Online:2014-09-10 Published:2014-09-22
Supported by:
National Natural Science Foundation of China（No. 50975258）;Zhejiang Provincial Major Project of Ministry of Science and Technology of China( No. 2011C11059)

摘要/Abstract

摘要：

阐述了2D数字阀的结构和工作原理，分析了2D数字阀死区产生的原因，针对传统的颤振补偿死区方法的不足，提出流量规划补偿死区的新方法，并研究了流量规划同时叠加少量颤振补偿技术。实验结果表明，采用流量规划补偿后,死区基本消失,但滞环依然存在;采用流量规划同时叠加少量颤振补偿技术进行补偿,可以完全消除死区，滞环也明显减小,非线性度小于0.5%，能够达到伺服系统的要求。在死区补偿之后，该阀在25%满量程的正弦波控制下,-3dB处幅频宽可达141Hz。

关键词: 2D数字阀, 流量规划, 颤振, 死区补偿

Abstract:

The structure and working principle of a 2D digital valve were described firstly, then the causes of 2D digital valve dead zone were analyzed. In view of the problems existing in the traditional dither compensation technology, a new compensation method of flow program was proposed, and the technology of flow program superposing dither compensation was studied. The experimental results show that, after flow program compensation, the dead zone almost disappears, but hysteresis still exists; the dead zone can be completely eliminated and the hysteresis significantly reduced after applying the technology of flow program superposing dither compensation. Finally the nonlinearity is less than 0.5%, which achieves the requirements of the servo system. Its frequency response is as 141Hz at -3dB of 25% maximum spool displacement after compensating the dead.

Key words: 2D digital valve, flow program, dither, dead zone compensation

中图分类号:

TH137

左强, 李胜, 阮健. 2D数字阀流量规划补偿死区研究[J]. 中国机械工程, 2014, 25(17): 2369-2374.

Zuo Qiang, Li Sheng, Ruan Jian. Study on Flow Program Compensation Technology for Dead Zone of 2D Digital Valves[J]. China Mechanical Engineering, 2014, 25(17): 2369-2374.

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