发明名称 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 US7593802(B2) 申请公布日期 2009.09.22
申请号 US20050595116 申请日期 2005.10.20
申请人 FISHER CONTROLS INTERNATIONAL LLC 发明人 JUNK KENNETH W.;LATWESEN ANNETTE L.
分类号 G05B15/00 主分类号 G05B15/00
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