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Method and device for sensorless bearing damage detection and system identification of an electrical drive system

A technology for electric transmission and detectors, which is applied in the field of electric transmission system, identification of the system and/or detection of damage and devices, and can solve problems such as increasing costs

Inactive Publication Date: 2011-01-12
BAUMULLER NURNBERG GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This means that separate components are required for carrying out these methods with rotating detectors, which increases costs on the one hand and outlay on installation and evaluation on the other hand and thus additional sources of faults can also arise

Method used

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  • Method and device for sensorless bearing damage detection and system identification of an electrical drive system
  • Method and device for sensorless bearing damage detection and system identification of an electrical drive system

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Embodiment Construction

[0028] The present invention is distinguished in the following manner, namely, according to figure 1 The small frame 1 in the frame 1 performs the recognition of the mechanical angular velocity in a detector-less manner, that is to say, no separate sensor is used. Instead, only the machine's terminal values ​​are used. Here, for example, according to box 3 the stator current is used to form the torque component and according to box 4 the estimated motor speed is used, which according to box 2 is introduced as signals to be processed by a special signal processing. The specific signal processing of the invention is based on the use of the Welch method or the correlogram method according to box 5, by means of which the frequency response of the mechanism is calculated from the measured time signal (cf. box 6).

[0029] Next to the digital signal processing, according to the small box 7, the transmission system parameters are determined. Depending on the destination, all releva...

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Abstract

A method for identification of an electric drive system to be modeled as a multimass oscillator and / or for detection of damages in bearings and / or on elements susceptible to wear in an electric drive system, whereby a mechanical angular velocity of the electric drive system is determined in a sensorless method as part of the present method, and signal processing is performed on the basis of correlograms and / or Welch's method, using the mechanical angular velocity determined without a sensor, such that the frequency response of the mechanics of the electric drive system is determined as part of the signal processing, the data thereof being used for determination of at least one parameter of the electric drive system.

Description

technical field [0001] The invention relates to a method for identifying an electric drive system to be modeled as a multi-inertia vibrator and / or for detecting damage in bearings and / or on worn components in an electric drive system, as well as associated devices and corresponding Electric drivetrain. Background technique [0002] The mechanical complex of electrical drives can often be modeled in practice as a multi-inertia vibrator. The drive system is identified in the sense of modeling in order to then parameterize the controller or other components of the drive system on the basis of the identified model. Modeling is critical to the start-up process of a powertrain. In addition, condition monitoring is carried out according to the purpose in the electric drive system. Within the framework of this condition monitoring, in particular damage to drive train bearings or damage to wear-prone components is to be detected. [0003] In previous methods for modeling or for d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02G01M13/04
CPCG01M13/045
Inventor 塞巴斯蒂安·维尔沃克乔斯马里奥·帕卡斯
Owner BAUMULLER NURNBERG GMBH
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