A New Slip Controller to Reduce Braking Distance by Means of Active Shock Absorbers Technische Universität Darmstadt, GERMANY

Format:

Conference/Event

Author/Creator:

Niemz, Tobias, author.

Conference Name:

Asia Pacific Automotive Engineering Conference (2007-08-05 : Hollywood, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2007

Summary:

This paper presents a control algorithm for semi-active suspensions to reduce the braking distance of passenger cars. Active shock absorbers are controlled and used to influence the vertical dynamics during ABS-controlled full braking.The core of the approach presented in this paper is based on a switching control logic which sets the car's body damping to one of the two extrema hard and soft. The control algorithm is implemented in a compact class passenger car. Test drives on a real road, using a braking machine for reproducibility reasons, have been executed.It could be shown that it is possible to reduce the braking distance by affecting on the vertical dynamics of a passenger car in general. This is the first published experimental result of its kind. The amount of reduction depends on the height profile of the testing track. On a road with an unevenness comparable to the one on a typical German Autobahn a reduction of typically 1.3 %, compared to the best passive damping, was achieved. On a very rough road, the average braking distance was reduced by 3.5 %, compared to the best passive damping

Notes:

Vendor supplied data

Publisher Number:

2007-01-3664

Access Restriction:

Restricted for use by site license