Screed slope controller for a paver
US4925340A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | May 12, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C19/42
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A controller for controlling the slope of a screed supported by support arms wherein the screed is moved over a distance includes a first slope sensor which develops a first sensor signal representing the slope of the screed, a second slope sensor which develops a second sensor signal representing the slope of the support arms and a first summer which sums the first sensor signal and command signal indicative of a particular screed slope to develop a first error signal. An integrator integrates the error signal over distance to develop an integrated first error signal. A second summer sums the integrated first error signal with the second sensor signal to develop a second error signal which is utilized to control actuators which adjust the slope of the support arms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.