METHOD AND ELECTRONIC DEVICE FOR IMPROVING THE AVAILABILITY OF AN ELECTROMECHANICAL ACTUATOR

摘要

The invention relates to a method for improving the availability of an electromechanical actuator of an electromechanical or electrohydraulic brake system in a motor vehicle, comprising a motor controller for an electric motor, said motor controller operating in a non-restricted operating mode. Additional operating modes for the motor controller are defined in addition to the non-restricted operating mode, said additional operating modes operating with restricted access to state variables of the electric motor and the electronic control system of the electric motor, and a change of the control process and/or a deactivation of individual functions of the motor controller are carried out in said additional operating modes dependent on the restricted access. The invention further relates to an electronic device for use with an electromechanical or electrohydraulic brake system. The electronic device comprises multiple modules for controlling an electric motor, wherein a module for ascertaining (2) the target current is provided, said module being electrically connected to a field-oriented current regulator (3) and obtaining calculated target current values via said connection using different state variables and/or estimated variables as well as stored parameters.