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Counter electro-motoric force based functional status detection of an electro-motor

A functional state, electric motor technology, applied in the field of electric motors, to achieve the effect of saving weight

Active Publication Date: 2011-09-21
AIRBUS OPERATIONS GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These additional sensors imply additional weight which may be a disadvantage in the case of aircraft

Method used

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  • Counter electro-motoric force based functional status detection of an electro-motor
  • Counter electro-motoric force based functional status detection of an electro-motor
  • Counter electro-motoric force based functional status detection of an electro-motor

Examples

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Embodiment Construction

[0042] figure 1 A symbolic block diagram of an exemplary embodiment of the invention is shown. A box indicated by numeral 2 represents a driver for the stepping motor 48 . The driver 2 is responsible for defining the direction of rotation of the stepper motor and the rotational speed of the stepper motor 48 . Accordingly, the driver 2 sends a control signal to the stepper motor 48 . Stepper motors 48 may be used to move mechanical systems like valves 49 . Incorporated in the stepper motor 48 is a sensor 50 capable of recognizing the functional state of the motor 48 . The sensor 50 can be a coil of the stepper motor 48 , which has the advantage that no additional means need to be added to the stepper motor 48 for determining the actual state of the stepper motor 48 .

[0043] The signal determined by the sensor 50 is received by a functional state detection unit 52 . The functional status detection unit 52 is an electronic circuit capable of delivering discrete signals dep...

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PUM

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Abstract

The present invention relates to a circuit for detecting a functional status of an electro-motor. Typical electro-motors need additional components to identify the functional status of the motor. This means additional weight for such motors determining the functional status. According to the present invention a circuit is provided using a part of a motor as a sensor for detecting the functional status of the electro-motor.

Description

technical field [0001] The invention relates to the field of electric motors. The invention relates in particular to a circuit for detecting the functional state of an electric motor and a corresponding method, and also to a valve and an aircraft comprising such a circuit. Background technique [0002] Today, electric motors are widely used electromechanical converters for converting electrical current into mechanical force. They are usually based on the physical phenomenon of electromagnetism. A current generates a magnetic field that can affect another magnetic field close to the current. Thus, electric current can be used to turn the magnetic rotor of the electric motor and the shaft connected to this rotor. [0003] On the other hand, a changing magnetic field close to the wire generates a voltage in the wire. This voltage is called back EMF. In this document, the term back EMF is used for such EMF. [0004] A stepper motor is a special kind of motor. Typically, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/18
CPCH02P6/182
Inventor 于尔根·克尔恩霍费尔托马斯·舍雷尔斯特芬·卡尔索阿尔维·比库姆约翰·马连尼安大卫·利恩霍茨瓦尔特·S·霍伊诺夫斯基
Owner AIRBUS OPERATIONS GMBH