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Method and electronic device for improving the availability of electromechanical actuator

An electronic device, a technology for controlling electronic devices, applied in the direction of current controller, brake transmission, model/simulation for control purposes, etc.

Active Publication Date: 2014-08-13
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This application does not describe how the functional capability of the brake system can be maintained in the event of an inherent fault in the regulation of the electric motor of the actuator

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 The signal flow of the variables to be considered is shown in the block diagram of the motor regulation of the field-commutated permanent magnet synchronous motor (PMSM) of the actuator of the electromechanically driven external force braking system (CFB) for the purpose of describing the electronic Apparatus and methods are reduced to the necessary parameters. This type of electric machine is particularly suitable for use in motor vehicles since, for example, the omission of a commutator reduces the maintenance effort compared to a synchronous machine with a commutator. The rotor speed and motor position of the PMSM are assumed to be confirmed and thus not described.

[0034] In normal operation, the setpoint current value idsoll and the setpoint current value iqsoll are based on the setpoint and other measured and estimated parameters entered through the setpoint interface 1 and the stored parameter formation. In this explanatory example, the temperature, ...

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PUM

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Abstract

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.

Description

technical field [0001] The invention relates to a method for improving the availability of an electromechanical actuator of an electromechanical brake system (EMB) in a motor vehicle according to the preamble of claim 1 and to an electronic arrangement according to the preamble of claim 12 . Background technique [0002] In motor vehicle technology, "brake-by-wire" braking devices are becoming more and more popular. Such braking systems usually include electromechanical actuators which are each assigned to a wheel and which are controlled by electronic signals which can be triggered by a braking request of the vehicle driver or, for example, by an electronic stability program. The braking effect is achieved in particular by means of a friction brake. In an electromechanical brake system, the actuator includes at least an electric motor, a transmission and a friction brake, wherein the desired clamping force is applied to the brake disc by the electric motor. In electrohydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/88B60T13/74
CPCB60T8/885B60T2270/402B60T13/741B60T2270/82B60T2270/404H02P6/28H02P6/34
Inventor T·考夫曼P·斯陶德J·博姆
Owner CONTINENTAL AUTOMOTIVE TECH GMBH