Output stage control in the event of a fault
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United States of America Patent
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Jan 17, 2017
Grant Date -
Oct 16, 2014
app pub date -
Mar 24, 2014
filing date -
Apr 12, 2013
priority date (Note) -
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Abstract
A method for implementing a transition from a functioning steering assistance system to a deactivated steering assistance system when a fault occurs, comprising the following steps: establishing the fault of the steering assistance system; establishing that all high-side power switches are functional (first case), or establishing that all low-side power switches are functional (second case); and in the first case: opening all high-side power switches and performing PWM-like control of the low-side power switches; or in the second case: opening all low-side power switches and performing PWM-like control of the high-side power switches.
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