COMPUTER ARCHITECTURE AND FUNCTIONAL ARCHITECTURE FOR INCREASING THE FAILSAFETY OF AUXILIARY POWER STEERING

摘要

The invention relates to a computer architecture and functional architecture for the operation of electrical auxiliary power steering, to a controller and to auxiliary power steering having a first group of modules with a high likelihood of failure and a second group of modules having a low likelihood of failure. In this case, the modules of the first group have a higher likelihood of failure than the modules of the second group. The first group of modules is kept redundantly in this case and, as a result, divided into main modules and into the redundant implementation of what are known as secondary modules. The main modules are arranged on a main control path and the secondary modules are respectively arranged on a secondary control path. Each of these control paths ultimately produces a control signal, i.e. a main control signal and a secondary control signal. A multiplexer is used to decide which of these two control signals is forwarded to modules from the second group. This second group of modules is implemented only once and not present in redundant form.