Process for driving an electric machine and driver system therefor
First Claim
1. A method for operating an electric machine in a motor vehicle with a driver system that includes a control unit, in which an operating variable of the electric machine or of the driver system is monitored, comprising:
- checking, by the control unit, the validity of input variables of the driver system in two independent input validity checking function blocks, in parallel; and
producing a fault reaction by the control unit, if at least one of the two function blocks determines that at least one of the input variables is invalid,wherein an operating mode of the electric machine is provided as an input variable of the driver system, wherein at least one moment mode, one charging mode, and one rotary speed mode are provided as operating modes of the electric machine.
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Accused Products
Abstract
A method for operating an electric machine with a driver system is provided, in which an operating variable of the electric machine and/or of the driver system is monitored. The validity of the input variables is checked with regard to their checksum and whether the input variables are up-to-date, and the permissibility of an actual moment (Mist2) of the electric machine depending on the operating state of the electric machine is checked. In case of invalid input variables or invalidity of the actual moment (Mist2), a fault reaction is initiated. In addition, the implementability of the planned change of rotary speed is checked and, in case of non-implementability, changed over into a more favorable mode of operation of the electric machine. An electric machine used as a starter/generator in a motor vehicle can be monitored.
30 Citations
15 Claims
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1. A method for operating an electric machine in a motor vehicle with a driver system that includes a control unit, in which an operating variable of the electric machine or of the driver system is monitored, comprising:
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checking, by the control unit, the validity of input variables of the driver system in two independent input validity checking function blocks, in parallel; and producing a fault reaction by the control unit, if at least one of the two function blocks determines that at least one of the input variables is invalid, wherein an operating mode of the electric machine is provided as an input variable of the driver system, wherein at least one moment mode, one charging mode, and one rotary speed mode are provided as operating modes of the electric machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification