Method and electronic device for improving the availability of an electromechanical actuator

摘要

A method for improving the availability of an electromechanical actuator of an electromechanical or electrohydraulic brake system in a motor vehicle, including electronic motor regulation functioning in a non-restricted operating mode (normal operation) for a field-commutated electric motor actuated by pulse width modulation. An electronic device having a setpoint value interface (1) for presetting setpoint variables and parameters, a module for calculating pulse width modulation switching times (4), a module for dead time compensation (5), a power electronics module (6) for actuating an electric motor (7) actuated on three phases, including a module for setpoint current determination (2) which is electrically connected to the field-oriented current controller (3) and receives, via this connection, setpoint current values (Id_set, Iq_set) calculated using various state and/or estimated variables and stored parameters from the module for setpoint current determination.

主权项

1. A method for improving the availability of an electromechanical actuator of an electromechanical or electrohydraulic brake system in a motor vehicle, comprising the steps of:
providing electronic motor regulation functioning in a non-restricted operating mode for a field-commutated electric motor actuated by pulse width modulation and having at least one further operating mode defined for the motor regulation, which further operating mode functions with restricted access to state variables of the electric motor and the actuation electronics thereof, and implementing a change in the regulation sequence or a switching-off of individual functions of the motor regulation depending on operating in the further operating mode.