Apparatus and method for two loop control of vibratory material

Details Apparatus and method for two loop control of vibratory material Apparatus and method for two loop control of vibratory material

1989-05-08

1991-12-24

Valenza, Joseph E.

Conveyors: power-driven

Conveyor section

Reciprocating conveying surface

198769, B65G 2500

Patent

active

050744038

ABSTRACT:
Control apparatus for a vibratory feeder has two control loops, one for controlling displacement amplitude and one for controlling displacement frequency. The two loops operate independently of each other, and use different feedback signals. The displacement amplitude control loop updates the amplitude of a continuous feeder actuator drive signal at a first predetermined rate, and the displacement frequency control loop updates the frequency of the drive signal at a second predetermined rate substantially slower than the first rate.

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patent: 4811835 (1989-03-01), Bullivant et al.

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