Lead-lag filter arrangement for electro-pneumatic control loops

Details Lead-lag filter arrangement for electro-pneumatic control loops Lead-lag filter arrangement for electro-pneumatic control loops

2011-03-29

2011-03-29

Bahta, Kidest (Department: 2123)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

C700S065000

Reexamination Certificate

active

07917233

ABSTRACT:
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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