Patent ID: 8827593

Claim:
A vibratory compactor comprising: a frame; a first cylindrical drum having a modifiable first compaction effort, wherein the first cylindrical drum is coupled to the frame; a second cylindrical drum having a modifiable second compaction effort, wherein the second cylindrical drum is coupled to the frame and disposed behind the first cylindrical drum; a fluid reservoir; a sensor measuring a first data parameter, wherein the first data parameter is the amount of a fluid in the fluid reservoir; and a control system configured to: receive the first data parameter; determine a first target compaction effort for the first cylindrical drum based on the first data parameter; determine a second target compaction effort for the second cylindrical drum based on the first data parameter; modify the first compaction effort to the first target compaction effort; and modify the second compaction effort to the second target compaction effort whereby changes in mass of the vibratory compactor are compensated.