Apparatus for controlling a system, such as a vehicle screen wipingsystem, based upon modification of a command signal, and a method of controlling same
US5757155A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Apr 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S318/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method of governing a system such as a vehicle screen wiping system. It also relates to a governing apparatus for performing the method of the invention, and to a governed system of the simultaneous or synchronized type, for wiping a glass surface of a vehicle. The governing apparatus according to the invention includes a low level control module which effects, in the system, a reversion to a stable state. The command signal from the low level control module is generated by an intermediate level control module which operates as an open loop. Finally perturbations are compensated for by a high level control module which produces a modification of the command signals in such a way as to render the governing action convergent. The modification of the command signals consists in reducing the rate of propagation of the command signals when the load increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.