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首页> 外文期刊>Canadian Wood Products >Getting ahead of the curve: Working with four-position valves has become more common to control the speed and position of linear positioners
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Getting ahead of the curve: Working with four-position valves has become more common to control the speed and position of linear positioners

机译：领先一步：使用四位阀来控制线性定位器的速度和位置已变得越来越普遍

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摘要

The four-position proportional valve has become more common recently to control the speed and position of linear positioners. These valves have replaced the standard servo valves in many applications The primary operational difference is that a proportional valve uses an electrical feedback to position the spool, whereas the traditional servo valve has an internal mechanical feedback. The four-position valve is used in two applications. The first is to direct oil to and from a linear positioner (cylinder) or a hydraulic motor. The valve is also used to control the position of a larger valve. In this case, it is used only as a pilot valve to direct oil for shifting the main spool This "two stage" valve is used to handle larger flow rates, usually 15GPM and above.
机译：四位置比例阀最近变得越来越普遍，以控制线性定位器的速度和位置。这些阀已在许多应用中取代了标准的伺服阀。主要的操作区别是比例阀使用电反馈来定位滑阀，而传统的伺服阀具有内部机械反馈。四位阀用于两种应用。第一种是将油引导至线性定位器（气缸）或液压马达，或将其引导至该位置。该阀还用于控制较大阀的位置。在这种情况下，它仅用作引导油来引导主阀芯移位的先导阀。“两级”阀用于处理较大的流量，通常为15GPM或更高。

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