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转载——MOOG电液执行器Electrohydrostatic Actuation System[0]

Posted on 2023年11月14日 by

动力源驱动技术的发展:恒速电机驱动定量→恒速电机驱动变量泵→调速电机(变频器)驱动定量泵→伺服电机驱动定量泵。

EHA发展的基本理念:首先把电能转化液压能,然后转化为机械能。通过调速电机驱动液压泵,其可工作在4象限,控制液压执行器。

为了实现精密运动控制,如实现位置、速度和力的控制,需要考虑采用高性能伺服电机+位移传感器+压力传感器等措施,通过闭环控制来实现。

可构建两种不同类型的系统:独立的(闭式预加载)和非独立的(开式预加载,需要辅助泵)

详细的原理构思图。

神经中枢大脑:EPU部分,包括驱动器、伺服电机、径向柱塞泵

增加一些躯体(阀块和油缸),一个完整的EAS就诞生了。

泵与电机直接安装,无需管道,可工作在4象限。

运行泵内冷:零流量,连续高压。

双排量设计(大/小排量):快速运动大流量,精密控制小流量。

应用广泛。

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