1998 Volume 60 Issue 3 Pages 79-86
This paper describes the method to control seeding rate proportional to the changes of the traveling speed using computer control system. The control algorithm is based on Proportional+Integral control method and the result of the laboratory test shows that the control system did respond immediately (about 1 second) after the traveling speed was changed from low to high or high to low however, the time required for the actual metering roll speed to be stabilized was about 3 to 4 seconds when the traveling speed changes from low to high and about 2 seconds when traveling speed changes from high to low. The desired metering roll speed was achieved within a reasonable number of sampling of the control program.
