A hydraulic system based on the servo valve with dual input of machine and electricity. (30th November 2020)

• Record Type: Journal Article
• Authors: Yan, Hao; Jiang, Bowen; Zuo, Zheqing
• Is Part Of: International journal of modelling, identification and control. Volume 34:Number 3(2020)
• Page Start: 187
• Page End: 196
• Publication Date: 2020-11-30
• Subjects: servo valve -- dual input -- mechanical feedback -- dynamic and static characteristics -- error analysis; Engineering -- Methodology -- Periodicals; Science -- Methodology -- Periodicals; 001.42
• Languages: English
• ISSNs: 1746-6172

Abstract

The hydraulic system based on the servo valve with dual input of machine and electricity consists of the valve control system and the mechanical feedback device, which has a higher reliability. When the power of the system is cut off, the system can continue working until the actuator returns to the original position. This system is widely used in some situations with higher reliability requirements. In this paper, the mathematical model of the system is established, where a certain transmission ratio between the actuator and the mechanical feedback is considered. Meanwhile, the key system parameters are analysed in order to reflect their influences on the system performance. It is obtained that the uncertainties of key parameters of the hydraulic amplifier have a certain impact on the dynamic and static characteristics of the system.