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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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