BY-10-31.5-70 比例溢流阀

（三）比例控制阀
从控制原理上讲，比例阀与伺服阀基本相同，无论是阀的基本结构或主阀的动作原理，比例阀和开发试阀都十分相同或相近。先导控制部分取自伺服阀，结构相对更简单，主阀基本采用开关式阀的操控形式，本质上略有差异，但原则上讲是以开关式阀为基础融合了比例电磁铁的特性，属中和型液压控制阀。
相比前两种阀，比例控制阀的结构相对简单，价格也较为便宜，可称之为廉价的电液伺服元件。介于电液开关控制和电液伺服控制之间的比例控制阀，可谓是将上述两种元件的特点加以结合，实际作用也介于其中，如注塑机、型材挤压机这类设备，它在这些简易自动化、简易数控以及单参数适应控制的液压系统方面为优选。但这类阀也有一定劣势，相比伺服阀，它的频率响应较低，存在一定的死区和滞环，对控制精度要求较高和响应要素较快的闭环控制系统而言，其能力也稍显不足，不过针对速度（单参数）闭环控制系统和一般开环电液控制系统，它基本可满足响应需求。
除了上述的三种液压控制阀，近两年也推出了一种新型比例伺服阀——即高性能比例方向阀， 它也采用比例电磁铁作为电-机械转换器，同时阀芯和阀套采用与伺服阀相同的加工工艺、配合精度和零遮盖的阀口等，其抗污染能力逊色于伺服阀，但控制性能与伺服阀更为接近，也能用于各种工业闭环控制中。东莞塞纳瑞液压科技有限公司是一家专注于液压元件、液压系统、机电的五金产品研究、开发、生产及销售的高科技企业，期待与您的合作！

PGP511A0030CK1Q3J6N,PGP511A0040CK1Q3J6N,PGP511A0050CK1Q3J6N,PGP511A0060CK1Q3J6N,PGP511A0070CK1Q3J6NPGP511A0080CK1Q3J6N,PGP511A0090CK1Q3J6N,
PGP511A0100CK1Q3J6N,PGP511A0110CK1Q3J6N,
PGP511A0120CK1Q3J6N,PGP511A0130CK1Q3J6N,PGP511A0020AQ1Q3J6N,
PGP511A0030AQ1Q3J6N,PGP511A0040AQ1Q3J6N,PGP511A0050AQ1Q3J6N,PGP511A0060AQ1Q3J6N,PGP511A0070AQ1Q3J6N,PGP511A0080AQ1Q3J6N,PGP511A0090AQ1Q3J6N,
PGP511A0100AQ1Q3J6N,PGP511A0110AQ1Q3J6N,
PGP511A0120AQ1Q3J6N,PGP511A0130AQ1Q3J6N,
PGP511A0020CQ1Q3J6N,PGP511A0030CQ1Q3J6N,PGP511A0040CQ1Q3J6NPGP511A0050CQ1Q3J6N,PGP511A0060CQ1Q3J6N,PGP511A0070CQ1Q3J6N,PGP511A0080CQ1Q3J6NPGP511A0090CQ1Q3J6N,PGP511A0100CQ1Q3J6N,PGP511A0110CQ1Q3J6N,
PGP511A0120CQ1Q3J6N,PGP511A0130CQ1Q3J6N,PGP511A0020AA1Q3J6N,PGP511A0030AA1Q3J6N,PGP511A0040AA1Q3J6N,PGP511A0050AA1Q3J6N,PGP511A0060AA1Q3J6N,
PGP511A0070AA1Q3J6N,PGP511A0080AA1Q3J6N,
PGP511A0090AA1Q3J6N,PGP511A0100AA1Q3J6N,PGP511A0110AA1Q3J6N,
PGP511A0120AA1Q3J6N,PGP511A0130AA1Q3J6N,PGP511A0020CA1Q3J6N,PGP511A0030CA1Q3J6N,PGP511A0040CA1Q3J6N,
PGP511A0050CA1Q3J6N,PGP511A0060CA1Q3J6N,PGP511A0070CA1Q3J6N,
PGP511A0080CA1Q3J6N,PGP511A0090CA1Q3J6N,
PGP511A0100CA1Q3J6N,PGP511A0110CA1Q3J6N,PGP511A0120CA1Q3J6N,PGP511A0130CA1Q3J6N,PGP511A0020AJ2L2J6N,PGP511A0030AJ2L2J6N,
PGP511A0040AJ2L2J6N,PGP511A0050AJ2L2J6NPGP511A0060AJ2L2J6N,
PGP511A0070AJ2L2J6N,PGP511A0080AJ2L2J6N,PGP511A0090AJ2L2J6N,PGP511A0100AJ2L2J6N,PGP511A0110AJ2L2J6N,PGP511A0120AJ2L2J6N,

http://www.wxqrf.com