2D电液压力伺服阀的实验研究
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摘要
为了满足飞行器的舵机控制和刹车控制等领域的需要,特推出2D电液压力伺服阀。目前,压力伺服阀种类很少,而且多采用压力传感器作为输出进行闭环,这类伺服阀受环境温度变化影响,温漂较大。2D电液压力伺服阀采用两级结构。以LVDT传感器检测先导级阀芯位移作为反馈量,对先导级阀芯进行闭环控制,可以有效避免压力传感器温漂大的问题。实验结果表明,滞环大小为2.82%,线性度大小为3.4%,经试验研究,2D电液压力伺服阀的频宽可以达到70Hz。
In order to meet the needs of the aircraft steering gear control and brake control, the 2 D electro-hydraulic pressure servo valve is introduced. At present, there are few types of pressure servo valves, and the pressure sensors are used as the output for the closed-loop,which is affected by the temperature change of the environment. 2 D electric hydraulic pressure servo valve adopts two levels of structure.Using the LVDT sensor to detect the displacement of the pilot valve core as the feedback, the closed-loop control of the pilot valve core can effectively avoid the problem of temperature drift of the pressure sensor. The experimental results show that the dilatation size is 2.82%, the linearity is 3.4%, and the frequency width of the 2 D electro-hydraulic pressure servo valve can reach 70 Hz.
In order to meet the needs of the aircraft steering gear control and brake control, the 2 D electro-hydraulic pressure servo valve is introduced. At present, there are few types of pressure servo valves, and the pressure sensors are used as the output for the closed-loop,which is affected by the temperature change of the environment. 2 D electric hydraulic pressure servo valve adopts two levels of structure.Using the LVDT sensor to detect the displacement of the pilot valve core as the feedback, the closed-loop control of the pilot valve core can effectively avoid the problem of temperature drift of the pressure sensor. The experimental results show that the dilatation size is 2.82%, the linearity is 3.4%, and the frequency width of the 2 D electro-hydraulic pressure servo valve can reach 70 Hz.
引文
[1]李胜.2D伺服阀数字控制的关键技术的研究[D].杭州:浙江工业大学,2011.
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[4]孟彬.新型2D阀用电-机械转换器与应用研究[D].杭州:浙江工业大学,2013.
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[6]郑舒.PWM驱动电机的电流环设计[J].华东地质学院学报,2002,25(2):571-572.
[7]杨爱民,宋仲康.基于LVDT传感器的圆柱体直径测量仪的设计[J].仪表技术,2005,(5):52-54.
[2]韩俊伟.电液伺服系统的发展与应用[J].机床与液压,2012,(2):7-10.
[3]阮健.电液(气)直接数字控制技术[M].杭州:浙江大学出版社,2000.
[4]孟彬.新型2D阀用电-机械转换器与应用研究[D].杭州:浙江工业大学,2013.
[5]路甬祥,周洪.电液、电气比例控制技术的新进展[J].机床与液压,1988,(3):16-24.
[6]郑舒.PWM驱动电机的电流环设计[J].华东地质学院学报,2002,25(2):571-572.
[7]杨爱民,宋仲康.基于LVDT传感器的圆柱体直径测量仪的设计[J].仪表技术,2005,(5):52-54.