US 10,889,944 B2
Control system for controlling operation of compaction systems of a paving machine
Jacob Ryan Ellwein, Oak Grove, MN (US)
Assigned to Caterpillar Paving Products Inc., Brooklyn Park, MN (US)
Filed by Caterpillar Paving Products Inc., Brooklyn Park, MN (US)
Filed on Aug. 28, 2018, as Appl. No. 16/114,297.
Prior Publication US 2020/0071892 A1, Mar. 5, 2020
Int. Cl. E01C 19/48 (2006.01); E01C 19/38 (2006.01)
CPC E01C 19/4853 (2013.01) [E01C 19/38 (2013.01); E01C 19/4833 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control system for controlling operation of a vibratory system and a tamper system of a paving machine, the control system comprising:
a first input device operable to provide a first operating signal for operating the vibratory system according to a desired first operating speed;
a second input device operable to provide a second operating signal for operating the tamper system according to a desired second operation speed; and
a controller coupled in communication independently with each of the first and second input devices and the vibratory and tamper systems, the controller configured to:
receive the first operating signal and the second operating signal from corresponding ones of the first and second input devices,
compare the desired first operating speed and the desired second operating speed associated with the first operating signal and the second operating signal, respectively,
determine, based on the comparison, whether the desired first and second operating speeds lie within a pre-defined range from each other, and
modulate, when it is determined that the desired first and second operating speeds lie within the pre-defined range from each other, at least one of the first and second operating signals to operate the vibratory system according to a first operating speed and to operate the tamper system according to a second operating speed separated from one another by at least the pre-defined range such that undesirable harmonic oscillations are prevented in at least a screed of the vibratory system.