LEAD-LAG INPUT FILTER ARRANGEMENT FOR ELECTRO-PNEUMATIC CONTROL LOOPS
摘要
A lead-lag input filter is connected ahead of a positioner feedback loop having one or more valve accessories, such as a volume booster or a QEV, to overcome slow dynamics experienced by the accessories when receiving low amplitude change control or set point signals. A user interface is connected to the lead-lag input filter and enables an operator or other control personnel to view and change the operating characteristics of the lead-lag input filter to thereby provide the control loop with any of a number of desired response characteristics.
申请公布号
WO2006045032(A2)
申请公布日期
2006.04.27
申请号
WO2005US37810
申请日期
2005.10.20
申请人
FISHER CONTROLS INTERNATIONAL LLC;JUNK, KENNETH, W.;LATWESEN, ANNETTE, L.