Patent · US Expired

Method for regulating a clutch or a brake in a transmission

US6594573B1 · kind B1 · utility

18Cited by

5References

13Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Thomas Rossmann · Laichingen, DE
Friedrich Tenbrock · Tettnang, DE
Dieter Neumann · Tettnang, DE

Key dates

Filing date	Feb 28, 2002
Grant date	Jul 15, 2003
Priority date	—
Expiry date	Feb 28, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/143
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for regulating an electrohydraulically controlled clutch or a brake of a transmission. According to the invention, the clutch or brake is regulated using a model-based compensation pressure regulator with the help of an observation unit, whereby the compensation-pressure control circuit contains a non-linear compensation element which corresponds to the inverse model of the control system of the coupling or brake. The observation unit estimates interference levels of the clutch regulation from a drive chain model, according to a condition-estimation procedure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.