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REDUNDANT HARDWARE ARCHITECTURE FOR THE LOW-VOLTAGE POWER SUPPLY STAGE OF THE BRAKING SYSTEM OF A VEHICLE IN WHICH EACH OF THE WHEELS ARE CONNECTED TO AT LEAST ONE ROTARY ELECTRICAL MACHINE

  • US 20090256415A1
  • Filed: 06/15/2007
  • Published: 10/15/2009
  • Est. Priority Date: 06/26/2006
  • Status: Active Grant
First Claim
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1. An electric braking system for a road vehicle that includes:

  • at least two wheels (1) each connected for rotation to at least one rotary electric machine (2), and one electronic wheel control module (23) controlling an electric machine of a corresponding wheel, with each electronic control module enabling a control torque of determined amplitude and sign to be imparted selectively to a corresponding wheel, wherein the electric braking system comprises at least two sub-systems (A and B), each of the at least two sub-systems comprising;

    at least one of the electronic wheel control modules (23);

    a central electric line (40);

    a low-voltage electrical supply stage for supplying electronics for controlling and driving power elements, wherein the low-voltage electrical supply stage includes a first low-voltage electrical supply and at least one second low-voltage electrical supply, wherein the first supply and the second supply are interconnected by a low-voltage electric line (43) with a first section (43A) and a second section (43B), the first and second sections being connected by a device (430) that electrically separates the first and second sections and being configured to interrupt an interconnection of the first and second sections on demand in an event of one of the first and second sections experiencing an undervoltage or an overcurrent, and wherein each electronic wheel control module (23) of one (A) of the at least two sub-systems is supplied by the first section and each electronic wheel control module (23) of the other (B) of the at least two sub-systems is supplied by the second section.

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