Patent ID: 9221492
Filing Date: 2015-12-29
Classification: B62D,G06F

Abstract:
1. A power-assisted steering system, comprising: a dual core microcontroller unit that receives input signals including a measured torsion bar torque input and generates output signals for controlling steering assistance; wherein the dual core microcontroller unit comprises: wherein the first module and the second module are executed synchronously in parallel to each other; wherein arithmetic differences that occur within the control path or the monitoring path are detected by a first comparator circuit of the microcontroller unit; wherein results of individual computing steps of the first program module and the second program module are detected at the granular level by a core comparator, and as a result of a detected difference of the first comparator circuit, a transition is made into an emergency operating mode in the event that the core comparator has not diagnosed an arithmetic error, so as to ensure further availability of at least some steering assistance over at least a certain time period.