| 摘要 |
A method is provided for controlling power supply of an electrically powered steering system on-board an automotive land vehicle equipped with a high voltage source and a low voltage source. A first and a second steering motor operate at a nominal operating voltage which is higher than the voltage of the low voltage source, are fed by the high voltage source and may absorb respectively a first and a second nominal operating power. A step-up circuit is connected to the low voltage source, and is adapted to deliver a back-up electrical power in case of failure of the high voltage source. In the method, in case of failure of the high voltage source, back-up electrical power absorbed by each of the two motors is limited on the basis of a priority rule. |
