초록 ▼

In a motor vehicle driving system comprising several asynchronous electric machines (11, 12) each coupled to a driving wheel (13, 14), a polyphase supply device (2) and a regulating device (6) using a reference signal (SR) representative of a speed of one of the driving wheels, the invention provide

In a motor vehicle driving system comprising several asynchronous electric machines (11, 12) each coupled to a driving wheel (13, 14), a polyphase supply device (2) and a regulating device (6) using a reference signal (SR) representative of a speed of one of the driving wheels, the invention provides a method and a device allowing an optimum electric supply to be assured when one or more of the driving wheels skid in drive mode or locks in the event of braking. For each driving wheel, a measured speed signal (NM1, NM2) is processed in a detection unit (23, 24) which detects skidding or locking and delivers binary skid (P1, P2) and locking (B1, B2) signals and a corrected speed signal (NC1, NC2) representing, as required, the speed prior to skidding or locking. A selection unit (25) selects one of the corrected speed signals as reference signal. Applications to electric or hybrid-powered vehicles.

대표청구항 ▼

[ What is claimed is:] [1.] A method for regulating the common electric supply of several electric machines each capable of driving a respective driving wheel of a motor vehicle in a drive mode, wherein a polyphase AC supply current, whose voltage and/or frequency are regulated as a function of at l

[ What is claimed is:] [1.] A method for regulating the common electric supply of several electric machines each capable of driving a respective driving wheel of a motor vehicle in a drive mode, wherein a polyphase AC supply current, whose voltage and/or frequency are regulated as a function of at least one set-value signal and one reference signal, is produced for supplying said electric machines together, a set of speed signals, each representing the speed of rotation of a respective one of said driving wheels is continually produced, said method comprising the step of selecting either one of said speed signals from said set or a substitution signal in order to deliver said reference signal,wherein, in said drive mode, skid detection is continually being effected for each driving wheel and, in said selection step, if at least one driving wheel is skidding and at least one driving wheel is not skidding in said drive mode, the speed signal corresponding to the fastest rotating non-skidding driving wheel is selected or, if all the driving wheels are skidding in said drive mode, a first substitution signal is produced and used in order to deliver said reference signal.