| 摘要 |
The invention proposes to superimpose on the reference setpoint for an electric vehicle drive an identification signal (I), an alternating torque (Mw) being superimposed on the running torque (MB) produced by a motor (9). The reaction of the mechanical system (10) to this excitation is detected, e.g. using a tachogenerator (11), at a suitable point in the mechanical driving system (10), e.g. at the motor shaft (W) or at the driving wheel (R). The tachogenerator (11) emits an alternating voltage (20), from which a measurement signal (S) is obtained by filtering. This signal is compared to the identification signal (I) fed into the driving system, e.g. with the aid of a correlation calculation. By evaluating the result of the correlation calculation, it is possible to establish whether a swerving or sliding condition is present. <IMAGE> |
