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A sensorless tension identification method for a two-motor speed control system

A technology of motor speed regulation and identification method, which is applied in the direction of multiple motor speed regulation, can solve the problems of expensive high-precision tension sensor, difficult installation, many material and environmental constraints, and achieve enhanced approach and anti-interference capabilities, The effect of wide application range and high application value

Active Publication Date: 2018-02-27
JIANGSU UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a sensorless tension identification method for a two-motor speed control system, which is used to overcome the disadvantages of high-precision tension sensors, which are expensive, difficult to install, and have many material and environmental constraints, and realize the tension of the two-motor speed control system. sensorless high-precision identification

Method used

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  • A sensorless tension identification method for a two-motor speed control system
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  • A sensorless tension identification method for a two-motor speed control system

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0042] The present invention is as figure 1 The two-motor speed control system platform shown is implemented on the basis. The system includes two frequency converters and two induction motors. The induction motor is connected to the driving roller through a reducer. The two driving rollers are connected by a belt. The belt is equipped ...

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Abstract

The invention discloses a sensorless tension identification method for a two-motor speed control system, which includes the following steps: deriving the left inverse model of the tension subsystem according to the mathematical model of the speed control system in which two frequency converters drive two induction motors; The approximation and anti-interference ability of the neural network, on the basis of the original left inverse system, two inputs of tension given Fs and tension error eF are added to form a six-input left inverse system; wavelet analysis is used to extract the feature quantity of the neural network input in advance; The function trains the neural network and constrains the weight of the neural network; implements a complete set of neural network algorithms in the PLC, and realizes the soft measurement of the platform tension of the two-motor speed control system. The invention saves expensive high-precision tension sensors, does not add other additional hardware, and can save system costs; in addition, the invention has a wide application range, is not limited by materials and environmental factors, and has high application value.

Description

technical field [0001] The invention relates to a sensorless tension identification method for a two-motor speed control system, specifically using a neural network left inverse method to realize tension identification, which is suitable for tension detection in a speed control system driven by two frequency converters and two induction motors, and belongs to soft measurement and The technical field of soft instrument construction. Background technique [0002] Multi-motor speed control systems are widely used in metallurgy, papermaking, textile, printing and other modern industrial fields. This type of system requires multiple motors to convey and grab materials. The stability of tension is an important factor to ensure the efficiency of conveying and grabbing. Stable tension can not only ensure that the material will not be broken due to excessive tension, but also can ensure that the material will not accumulate due to slack. The traditional method is to realize the dete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/56
Inventor 赵文祥陈杰刘国海周华伟张多袁俊
Owner JIANGSU UNIV
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