Device and method for controlling the position of a...

Details Device and method for controlling the position of a... Device and method for controlling the position of a...

2006-09-23

2008-08-05

Lazo, Thomas E (Department: 3745)

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

C060S407000

Reexamination Certificate

active

07406910

ABSTRACT:
The invention pertains to a device for the controlling the position of a pneumatic actuator comprising:a pneumatically adjustable actuating element (5);a pneumatic actuating drive (6) for adjusting the actuating element (5);an electro-pneumatic position controller (1) for pneumatically driving the actuating drive (6) as a function of a position controller set point and a controlled variable; andat least one main pneumatic power amplifier (10) with bypass throttle for amplifying the power output of the position controller (1) and for pneumatically driving the actuating drive (6).In addition, a pilot control pneumatic power amplifier (9) with a bypass throttle for preamplifying the pneumatic power output of the position controller (1) is installed between the position controller (1) and the main power amplifier (10).

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