Air-driven, turbine tow reel machine controlled according to towline velocity and vent door position
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United States of America Patent
Stats
-
Jan 28, 1992
Grant Date -
N/A
app pub date -
Dec 14, 1990
filing date -
Dec 14, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reeling control system and an air driven tow reel machine incorporating such a control system are disclosed. In the disclosed control system and reeling machine of the present invention, towline velocity is monitored and reel-in and reel-out operations are regulated according to a programmed towline velocity profile. A position sensor senses the position of the turbine vent doors and a velocity sensor device provides the instantaneous towline velocity. A velocity comparator compares the instantaneous towline velocity with a desired velocity value from a desired velocity profile. Based upon the difference between actual and desired towline velocities, a door control device generates a driving signal for controlling the vent door position accordingly.
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