自适应颤振式电液转换器的研究  

Study on the Adaptive Dither Electro-hydraulic Servo

作　　者：朱彩虹 于达仁[2] 徐基豫[2] 

机构地区：[1]锦州东港电力有限公司,辽宁锦州121006 [2]哈尔滨工业大学,哈尔滨150001

出　　处：《汽轮机技术》2003年第2期94-95,98,共3页Turbine Technology

摘　　要：分析了颤振功能对于防止电液转换器卡涩的作用,指出了目前通用的固定振幅式电液转换器的不足,解剖了停振及卡涩的原因,提出了一种能够使颤振信号幅值自动随电液转换器死区变化的自适应颤振原理,给出相应的电路,通过仿真表明这种电液转换器具有良好的防止卡涩功能。We analyze the effect of dither signal on preventing Electro-Hydraulic Servo from jamming. The defects on the fixed swing of current ElectroHydraulic Servo valve are pointed out and the reasons of dither stopping and jamming are anatomized. Moreover we propose a kind of adaptive dither principle that makes dither signals followed with the dead zone changes of ElectroHydraulic Servo and give the corresponding circuits. By means of simulation the results show that this kind of Electro-Hydraulic Servo has the high performance on preventing jamming.

关 键 词：DEH系统 电液转换器 颤振信号 卡涩故障 

分 类 号：TH113.1[机械工程—机械设计及理论]