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Markus.S. Haschka, Volker Krebs

Observing the Torque of a Powertrain with Backlash

Keywords: nonlinear observer, Popov-criterion, powertrain

The driving comfort of automobiles can be improved, if the torque transmission in the powertrain is controlled. Practically, not all system states are available by measurements to cope with this control task. Therefore, the design of a new nonlinear observer based on a simplified nonlinear powertrain model of the system order three is introduced in this contribution. This observer uses the measured rotation speed of the engine and of the drive wheels to estimate the torque angle of the powertrain. The stability of the presented observer is shown by the application of the Popov-criterion and Aiserman´s assumption. Finally, the performance of the observer will be demonstrated using simulation data of a complex powertrain model.

at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag

Print ISSN: 0178-2312
Volume: 55, 03/2007
Pages: 127 - 135

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