Rexroth比例伺服阀供货源头，力士乐比例伺服阀介绍：
电液比例伺服阀（也称伺服比例阀，伺服比例阀叫的比较多）是伺服比例阀是比例技术与伺服技术结合的产物。它是将比例阀中的比例电磁铁和伺服阀中的阀芯和阀套加工技术有机结合获得的。与比例阀相比，它zui重要的特征就是当阀芯处于中位时，阀口是零开口的（阀口的遮盖量几乎为零），这意味着伺服比例阀的控制特性具有死区为零的特点，特别适用于作为闭环系统的控制元件。它可以按给定的输入电压或电流信号连续地按比例地远距离地控制流体的方向、压力和流量。
采用电液比例控制阀可以提高系统的自动化程度和精度，又简化了系统。比例阀的工作虽用伺服阀可完成，但后者精度高、价格贵，对油液清洁度要求更高。比例阀主要结构与普通阀差别不大，只是比例阀均由比例电磁铁驱动（一种电—机械转换器）。要注意到比例阀，伺服阀和伺服比例阀是三种不同类型的阀。
比例阀分为：比例压力阀、比例流量阀和比例方向阀
电液比例伺服阀又叫电液伺服比例阀，来源于比例技术与伺服技术的结合，一种是采用比例电磁铁作为电-机转换器，将传统电液比例阀的功率滑阀改进成伺服阀的阀芯、阀套结构；一种是将电液伺服阀的滑阀的阀套结构去掉，机械反馈改为电反馈。
Rexroth比例伺服阀供货源头，询价注意事项：   
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Rexroth比例伺服阀供货源头，力士乐比例伺服阀常用型号：
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