A - Human Necessities – 01 – G
Patent
A - Human Necessities
01
G
A01G 25/09 (2006.01) A01G 25/16 (2006.01)
Patent
CA 2297537
The method of controlling the speed of the last regular drive unit of a center pivot irrigation system having a corner irrigation system pivotally connected thereto is disclosed comprising the steps of: placing a pressure transducer at the downstream side of the main water line for monitoring the changes in main water line pressure as the sprinklers on the extension water line are sequenced; driving the last regular drive unit at a predetermined speed; recording the output of the pressure transducer at predetermined intervals; comparing the recorded output at the predetermined intervals to the pressure recorded when all the sprinklers on the extension line are turned off; and varying the speed of the last regular drive unit according to the formula NEW SPEED = (END PRESSURE/RETRACTED END PRESSURE)1/2 x L.R.D.U. SPEED SETTING.
Gerdes Jerry D.
Ridout & Maybee Llp
Valmont Industries Inc.
LandOfFree
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