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Method and device for sensorless determination of volumetric flow and pressure

A volume flow, sensor technology, applied in the field of determining volume flow and pressure, can solve the problem of not knowing the exact influence of volume flow or pressure

Pending Publication Date: 2021-09-10
EBM PAPST MULFINGEN GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the temperature increases, the speed of the fan increases, but the exact effect on volume flow or pressure is not known

Method used

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  • Method and device for sensorless determination of volumetric flow and pressure
  • Method and device for sensorless determination of volumetric flow and pressure
  • Method and device for sensorless determination of volumetric flow and pressure

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Embodiment Construction

[0045] The following basis refers to Figure 1 to Figure 3 The two exemplary embodiments shown describe the invention in more detail, wherein the same reference numerals in the figures designate the same structural and / or functional features.

[0046] figure 1 A schematic conceptual diagram of an implementation of an artificial neural network designed as a feed-forward network is shown. The artificial neural network has an input layer Pi, an activation function f z The middle layer Z and has activation function f o output layer A.

[0047] Furthermore, the weighting parameter W is shown in the network topology jk , namely w 11 、w 12 、w 21 、w 22 ..., respectively represent the weighting of the kth input neuron on the jth neuron of the intermediate layer. Bias neuron with b, b 1 , b 2 ...bn means that b j Indicates the jth bias neuron of the middle layer.

[0048] A in the output layer represents the output of the output neuron. This corresponds to the detected vol...

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PUM

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Abstract

The invention relates to a method for determining a volumetric flow rate or pressure for adjusting a fan of a specific ventilation device, preferably driven by an EC motor, to a specific operating point, in order to achieve and maintain a predetermined target volume flow rate or target pressure of the ventilation device without using a pressure sensor or a volume flow rate sensor, the volume flow rate is determined by means of an artificial neural network on the basis of a sequential learning method consisting of a plurality of learning steps, wherein a connection of n artificial neurons is provided in one or more layers, and at least one input layer Pi is provided in order to process a number i of input parameters having a direct or indirect influence on the volume flow in the ventilation device.

Description

technical field [0001] The invention relates to a method and a device for determining volume flow and pressure without sensors for regulating an EC motor-driven fan of a ventilation system. Background technique [0002] For the ventilation of buildings and facilities with ventilation systems, it is usually necessary to use ventilation equipment with ventilation ducts and ventilation shafts to control the air flow. Inducted or exhausted air is conveyed in ducts and moved by one or more fans of the ventilation system to achieve the required and as constant as possible volumetric flow intensity. [0003] Pipe lengths, pipe diameters, pipe materials and the shape of other parts of the ventilation system, such as the shape of the air outlets, are determined individually by the manufacturer of the ventilation system. Manufacturers of fans used in ventilation equipment are often unaware of the design features and influencing factors for these applications. [0004] The design of ...

Claims

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Application Information

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IPC IPC(8): F04D27/00G05B13/02
CPCF04D27/001F04D27/004G05B13/027G05B2219/2614F05D2270/709F24F11/0001F24F11/62Y02B30/70F24F11/77G06N3/08
Inventor W·埃伯勒
Owner EBM PAPST MULFINGEN GMBH & CO KG
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