Continental Teves, Ag and Company Ohg

Gerold Schneider

Roland Caspari

Ralph Gronau

Burkhard Sappok

Disclosed is a traction control system and method for a vehicle having at least one driven wheel (R, L) with an associated wheel brake, an engine, and an electronic controller encompassing at least two linear sub-controllers designed for different coefficient of friction situations. Each of the at least two linear sub-controllers (C, C; C, C, C, C) determines a function of a control deviation (e) of at least one wheel specific characteristic, a control variable suggestion (u, u; u, u, u, u) that includes a control variable suggestion for the wheel brake and a control variable suggestion for the drive engine, and an output control variable (u) including an output control variable for the wheel brake and an output control variable for the drive engine, is determined from the control variable suggestions (u, u; u, u, u, u) by weighted addition (1).

Method for traction control of a motor vehicle and traction control system

A method of improving the control performance of a traction slip control system so that faulty control activations of the TCS control system are prevented in critical situations such as driving downhill. The invention concerns a method wherein a vehicle reference speed and a vehicle deceleration signal are derived from the rotational behavior of the vehicle wheels and wherein a vehicle deceleration signal is obtained by way of a longitudinal deceleration sensor. The course of the two deceleration signals is compared and analyzed for detecting stable or unstable wheel rotational behavior. Preferably a difference signal is formed indicating the difference between the two deceleration signals. The difference signal is evaluated by a multistage filter arrangement.

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Ebsdorfergrund, Germany

Gerold Schneider