Self compensation for duty cycle control

Details Self compensation for duty cycle control Self compensation for duty cycle control

1990-01-23

1990-12-04

Michalsky, Gerald A.

Fluid handling

Processes

25112905, 25112915, F16K 3106

Patent

active

049746227

ABSTRACT:
A valve control assembly (10) controls the flow rate of a liquid through a solenoid valve (11) by repeatedly opening the valve (11) for a predetermined time. The control assembly (10) includes a timer (30) for providing a pulsed signal having a pulse width proportional to flow rate to energize and deenergize the operating coil (24) to open and close a valve sealing element (20). A nominal delay time is provided between the start time of the pulse and actual movement of the valve element (12). With each pulsed signal, the actual movement time of the valve element (12) is compared to the nominal delay time providing a deviation time. The deviation time is added to the original pulse width to obtain an adjusted pulse width, which when supplied to the operating coil (24), will effectively maintain the valve element (12) consistently open for the predetermined time.

REFERENCES:
patent: 4766921 (1988-08-01), Williams

Affiliated with

Also associated with

Rating

Self compensation for duty cycle control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self compensation for duty cycle control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self compensation for duty cycle control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-877775