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US 2004/0200663 A1Published application
Electric motor-driven power steering apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTakayuki Kifuku, Yasuhiro Hosaka
Life of this patent
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Abstract
In an electric motor-driven power steering apparatus which comprises a bridge circuit for connecting a power source between input terminals and also connecting an electric motor between output terminals and energizes the electric motor by this bridge circuit and operates electric motor power to a steering system, the bridge circuit includes a predetermined number of arms constructed by connecting circuits for connecting switching elements in parallel with diodes in series so that the diodes mutually become reverse polarity.
Claims6
An electric motor-driven power steering apparatus comprising:
- a steering system;
- a bridge circuit;
- a power source for connecting between input terminals of the bridge circuit;
- and
- an electric motor for connecting between output terminals of the bridge circuit, wherein:
- the bridge circuit energizes the electric motor and operates electric motor power to the steering system;
- and
- the bridge circuit includes predetermined number of arms having connecting circuits for connecting switching elements in parallel with diodes in series so that the diodes mutually become reverse polarity.
5 more elements
Dependencies are inferred from the claim text.