Contactor speed closed loop control method based on neural network

A speed closed-loop, control method technology, applied in relays, electrical components, circuits, etc., can solve the problems of contact welding, narrow working voltage range, and affecting the reliability of contactor operation, so as to avoid calculation and improve operation safety Effect

Active Publication Date: 2017-07-14
FUZHOU UNIVERSITY
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Problems solved by technology

There are many defects in the operation of traditional contactors, such as: it is difficult to realize AC and DC, and the working voltage range is narrow. If the voltage is lower than the release value for 5~10ms, the contacts will be broken, which will affect the operation reliability of the contactor in co

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  • Contactor speed closed loop control method based on neural network
  • Contactor speed closed loop control method based on neural network
  • Contactor speed closed loop control method based on neural network

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Example Embodiment

[0025] The present invention will be further described below in conjunction with the drawings and embodiments.

[0026] Such as figure 1 As shown, this embodiment provides a neural network-based contactor speed closed-loop control method, which specifically includes the following steps:

[0027] Step S1: Use the current closed loop as the basic inner loop to flexibly adjust the excitation state of the contactor;

[0028] Step S2: Collect the excitation voltage and excitation current of the contactor, and use the embedded ANN model to calculate the real-time displacement of the contactor's moving core;

[0029] Step S3: Use the real-time displacement information to calculate the real-time speed of the moving iron core to construct a closed-loop control of the contactor speed.

[0030] In addition, the real-time calculation of displacement and speed can also realize the diagnosis of common faults of the contactor, such as: rejection, rejection, misunderstanding, misconnection faults, and...

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Abstract

The invention relates to a contactor speed closed loop control method based on a neural network. The method comprises steps of firstly adopting a current closed loop as a base inner ring for flexibly adjusting the excitation state of a contactor; collecting the excitation voltage and the exciting current of the contactor, and calculating the real-time displacement of the contactor core with an embedded ANN model; and finally using real-time displacement information to calculate the real-time speed of the moving core, and constructing the contactor speed closed-loop control. The method introduces a neural network technology to establish a contactor neural network (ANN) model, does not require the contactor specific structure and material parameters, does not need to simplify the magnetic circuit and the assumption of non-saturation, completes construction of any contactor model only through a simple training process, so as to output high-precision displacement information. On this basis, the speed closed loop control scheme of the contactor is constructed to perform closed loop control over the moving speed of the moving core.

Description

technical field [0001] The invention relates to the field of electric appliance control, in particular to a neural network-based closed-loop control method for contactor speed. Background technique [0002] As a common electromagnetic switch, the contactor is widely used in various industrial control fields, and its performance index directly affects the safety and stability of the control system. There are many defects in the operation of traditional contactors, such as: it is difficult to realize AC and DC, and the working voltage range is narrow. If the voltage is lower than the release value for 5~10ms, the contacts will be broken, which will affect the operation reliability of the contactor in continuous production systems such as petroleum and chemical industry; there will be coil operation overvoltage, which will affect the operation reliability of other electrical equipment connected in parallel with the coil , the added overvoltage suppression circuit introduces ad...

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Application Information

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IPC IPC(8): H01H47/02
CPCH01H47/02
Inventor 汤龙飞许志红
Owner FUZHOU UNIVERSITY
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